Answer:
349.42499999998
Step-by-step explanation:
$232.95 divided by 22 hours of work = amount per hour = 10.588636363636
If you get paid 10.588636363636 per hour then multiply this by 33 hours to get the answer of : $349 and 42499999998 cents
Gabe is paid semi monthly and contributes 9% of the total cost of his individual healthcare coverage he pays $48.47 per paycheck towards this contribution what is the total value of Gabes healthcare coverage for the year
Cost of the health insurance is $12925.33
What is cost?
A cost is the worth of cash that has been used up to create it or supply a function and is thus no longer accessible for use in manufacturing, research, commerce, or bookkeeping. In business, the cost might be one of procurement, in which case the money being spent to obtain it is recognized as cost. In this situation, money is the input that is used to purchase the item. This acquisition cost might be the total of the original producer's production expenses and the acquirer's direct capital costs above and beyond the amount paid to the producer. Typically, the package includes a gross margin above the cost of manufacture.
9% of x = 48.47
x = 48.47 x 100/9
= $538.55
Total cost = $538.55 x 24 months = $12925.33
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This year nelson planted 6 more than one fifth of the tomato plants he planted last year. which expression represents the number of tomato plants he planted this year?
a 1/5x-6
b 1/5x+6
c 5x+6
d 5x-6
The expression to represent the number of tomato plants he planted this year 1 / 5 x + 6.
How to represent expression?This year Nelson planted 6 more than one fifth of the tomato plants he planted last year.
The expression that can be used to represent the number of tomato plant he planted this year can calculated as follows:
Therefore,
let
x = number of tomato he planted last year.
Hence, the final expression is as follows:
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Graph the line y = kx + 1 given that point M belongs to the line.
M(1, 3)
Please help 25 points
The graph of the line y=kx+1 given that the point M(1,3) belongs to the line is shown below .
In the question ,
it is given that
the line y=kx+1 has point (1,3) on it ,
which means that the point (1,3) will satisfy the equation y=kx+1 .
So, substituting x=1 and y=3 , we get
3=k*1+1
3-1=k
k=2
Hence , the equation of the line becomes y=2x+1 .
On comparing the equation with point slope form of the the line, y=mx+c ,
we get , the slope of the line = 2 and y intercept of the line = 1 .
the graph of the line y=2x+1 is shown below .
Therefore , the graph of the line y=kx+1 given that point M(1,3) belongs to the line is shown below .
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I need help on this question please and thank you
It is proved that the line c is parallel to line d.
What is defined as the supplement angles?If two angles add up to 180 degrees, they are described as supplementary angles. When supplementary angles are combined, they establish a straight angle (180 degrees). In other words, if Angle 1 + Angle 2 = 180°, angles 1 and 2 are supplementary. Supplementary angles can be either adjacent or not. As a result, there are two kinds of supplementary angles. Every one of these kinds of supplementary angles is discussed further below.supplementary angles adjacentNon-contiguous supplementary anglesFor the given question;
Angle 2 and angle 3 are supplement;
∠2 + ∠3 = 180 ......eq 1
See from figure.
∠4 = ∠3 (vertically opposite angles)
Thus, replacing ∠3 with ∠4 in eq 1.
∠2 + ∠4 = 180 (linear pair)
As ∠2 and ∠4 form the linear pair. Thus, line c is parallel to line d.
Therefore, line c proved to be parallel to line d.
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Brandon mows the neighbor's yard to earn extra cash during the summer. He estimates that he mows 1/4 an acre every 1/2 hour. How many acres does he mow each hour?
zymiyas, this is the solution:
Brandon mows 1/4 an acre every 1/2 hour, therefore:
1/2 hour * 2 = one hour
1/4 * 2 = 2/4 or 1/2 an acre
Brandon will mow 1/2 an acre every hour
6. The following observations are arranged in ascending order. The median of the data is 25 find the value of x. 17, x, 24, x + 7, 35, 36, 46 (3 Points)
The value of x = 18.
What is median?
The median is the value that divides a data sample, a population, or a probability distribution's upper and lower halves in statistics and probability theory. It could be referred to as "the middle" value for a data set.
Median = [tex]\frac{n+1}{2} ^{th}[/tex] term
Given that,
The median of the data is 25.
The observations are 17, x, 24, x+7, 35, 36, 46.
Here, n = 7
Median = 25
Median = [tex]\frac{7+1}{2} ^{th}[/tex] term
Median = [tex]\frac{8}{2}^{th}[/tex] term
Median = 4[tex]^{th}[/tex] term
Median = x+7
25 = x+7
X = 25-7
X = 18
Here, x+7
X+7 = 18+7
X+7 = 25.
Therefore, the value of x is 18.
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Use substitution to find the solution to the system ofequation.-4x + y = 6-5x – y = 21
Let:
[tex]\begin{gathered} -4x+y=6_{\text{ }}(1) \\ -5x-y=21_{\text{ }}(2) \end{gathered}[/tex]From (1), solve for y:
[tex]y=6+4x_{\text{ }}(3)[/tex]Replace (3) into (2):
[tex]\begin{gathered} -5x-(6+4x)=21 \\ -5x-6-4x=21 \\ -9x-6=21 \\ -9x=21+6 \\ -9x=27 \\ x=\frac{27}{-9} \\ x=-3 \end{gathered}[/tex]Replace the value of x into (3):
[tex]\begin{gathered} y=6+4(-3) \\ y=6-12 \\ y=-6 \end{gathered}[/tex]Four friend must give a 7 minute presentation.each friend must speak for an equal amount of time. How long will each friend speak?
Answer:
1 minute and 75 seconds
Step-by-step explanation:
you take 4 and divide it by 7 minutes there for getting 1.75
Brian is working his way through school. He works two part-time jobs for a total of 22 hours a week. Job A pays $6.10 per hour, and Job B pays $7.30 per hour. How many hours did he work at each job the week that he made $148.60.
Let a be the number of hours that Brian works at Job A in one week and b be the number of hours that he works at Job B .in one week
Since Brian worked 22 hours per week and he made $148.60, we can set the following system of equations:
[tex]\begin{gathered} a+b=22, \\ 6.10a+7.30b=148.60. \end{gathered}[/tex]Subtracting b from the first equation we get:
[tex]\begin{gathered} a+b-b=22-b, \\ a=22-b\text{.} \end{gathered}[/tex]Substituting the above equation in the second one we get:
[tex]6.10(22-b)+7.30b=148.60.[/tex]Applying the distributive property we get:
[tex]\begin{gathered} 6.10\times22-6.10\times b+7.30b=148.60, \\ 134.20+1.20b=148.60. \end{gathered}[/tex]Subtracting 134.20 from the above equation we get:
[tex]\begin{gathered} 134.20+1.20b-134.20=148.60-134.20, \\ 1.20b=14.40. \end{gathered}[/tex]Dividing the above equation by 1.20 we get:
[tex]\begin{gathered} \frac{1.20b}{1.20}=\frac{14.40}{1.20}, \\ b=12. \end{gathered}[/tex]Substituting b=12 in a=22-b we get:
[tex]a=22-12=10.[/tex]Answer:
[tex]\sqrt{6} +2\sqrt{3} +\sqrt{12}[/tex]
[tex] = \sqrt{6} + \sqrt{12} + \sqrt{12} \\ \\ = \sqrt{6} + 2 \sqrt{12} \\ = \sqrt{6} + 2 \sqrt{4 \times 3} \\ = \sqrt{6} + 2 \times \sqrt{4} \times \sqrt{3} \\ = \sqrt{6} + 2 \times 2 \sqrt{3} \\ = \sqrt{6} + 4 \sqrt{3} [/tex]
ATTACHED IS THE SOLUTION
Let A(x) represent the area bounded by the graph, the horizontal axis, and the vertical lines at and t = x for the graph below. Evaluate A(x) for x = 1,2,3, and 4
Answer:
• A(1)=4
,• A(2)=8
,• A(3)=13
,• A(4)=17.5
Explanation:
The graph is given below:
The area, A(x) represents the area bounded by the graph, the horizontal axis, and the vertical lines at t=0 and t = x.
(a)A(1)
Area, A(1) is the area of a trapezoid in which: a=3, b=5 and h=1
[tex]\begin{gathered} \text{ Area of a trapezoid}=\frac{1}{2}(a+b)h \\ A(1)=\frac{1}{2}(3+5)(1)=\frac{1}{2}\times8=4\text{ square units} \end{gathered}[/tex](b)A(2)
.
[tex]A(2)=2\times A(1)=2\times4=8\text{ square units}[/tex](c)A(3)
.
[tex]\begin{gathered} A(3)=A(2)+(5\times1) \\ =8+5 \\ =13\text{ square units} \end{gathered}[/tex](d)A(4)
[tex]\begin{gathered} A(4)=A(3)+\text{ Area of shape 4} \\ =13+\frac{1}{2}(5+4)(1) \\ =13+\frac{9}{2} \\ =13+4.5 \\ =17.5\text{ square units} \end{gathered}[/tex]
(5-9i)-(2-6i)+(3-4i)
Hello! So...
We are given the following:
[tex](5-9i)-(2-6i)+(3-4i)[/tex]
_____________________________________________
1. Simplify the given expression.
[tex](5-9i)-(2-6i)+(3-4i)=5-9i-(2-6i)+3-4i[/tex]
_____________________________________________
2. Group the like terms.
[tex]-9i-4i(-2-6i)+5+3[/tex]
_____________________________________________
3. Add similar elements ( [tex]-9i-4i=-13i[/tex] ).
[tex]=-13i-(2-6i)+5+3[/tex]
_____________________________________________
4. Add the numbers ( [tex]5+3=8[/tex] ).
[tex]-13i-(2-6i)+8[/tex]
_____________________________________________
5. Remove the parentheses ( [tex]-(a+bi)=-a-bi[/tex] ).
[tex]-13i+-2-(-6)i+8[/tex]
_____________________________________________
6. Group the like terms.
[tex]-13i-(-6)i-2+8[/tex]
_____________________________________________
7. Add similar elements ( [tex]-13i-(-6)i=-7i[/tex] ).
[tex]-7i-2+8[/tex]
_____________________________________________
8. Add the numbers ( [tex]-2+8=6[/tex] ).
[tex]-7i+6[/tex]
_____________________________________________
9. Rewrite in standard complex form.
[tex]6-7i[/tex]
^Hence, our solution.
_______________________________________________________
Hope this helps! If so, lmk! If you need anything else, feel free to comment below and I'll see what else I can do to assist you further. But for now, thank you for your time and good luck!
how do you solve this?
According to the given values, the length of the arc is 1 cm approx.
What is an arc?An arc is, in general, any straight curve that connects two points. The term "arc length" refers to an arc's length. A graph arc is an ordered pair of adjacent vertices in a graph. An arc is specifically any section of a circle's circumference (other than the entire curve).So, the formula to find the length of the arc:
Arc Length = θ × (π/180) × rNow, substitute the values in the formula as follows:
Arc Length = θ × (π/180) × rArc Length = 8π/9 × (π/180) × 16.5Arc Length = 8π/9 × π/180 × 16.5Arc Length = 2π/9 × π/45 × 16.5Arc Length = 2π × π/45 × 1.8Arc Length = 6.28 × 3.14/45 × 1.8 (π = 3.14)Arc Length = 11.304 × 3.14/45Arc Length = 1.256 × 3.14/5Arc Length = 3.94384/5Arc Length = 0.788768Rounding off: 1.00 cmTherefore, according to the given values, the length of the arc is 1 cm approx.
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Find the slope and y-intercept for the line.
Slope=
y-intercept = (0,
slope= 1/4
y intercept= -5
assume that each of the n trails
Given,
The value of n is 8.
The value of x is 0.
The value of p is 0.6.
The binomial expression is,
[tex]P(X=x)=^nC_x\times(p)^x\times(1-p)^{n-x}[/tex]Subsituting the values then,
[tex]\begin{gathered} P(X=0)=^8C_0\times(0.6)^0\times(1-0.6)^{8-0} \\ P(X=0)=\frac{8!}{0!\times8!}\times1\times(0.4)^8 \\ P(X=0)=1\times1\times(0.4)^8 \\ P(X=0)=0.000655 \\ P(X=0)=0.0007 \end{gathered}[/tex]ence, the probability is 0.0007.
For
f(x) = 3
x
and
g(x) = x4 + 2,
find the following.
(a)
(f ∘ g)(x)
(b)
(g ∘ f)(x)
(c)
f(f(x))
(d)
f 2(x) = (f · f)(x)
Answer:
f(3) = (3)4 + 2
Step-by-step explanation:
y = (3)4 + 2
y = 12 + 2
y = 14
The product of two irrational numbers is an irrational number
a.True
b.False
False, The product of two irritational numbers is either rational or irrational numbers.
A rational number is a number expressed in the form of p/q where p and q are integers and q should not be zero. Example: 2/5, 24
Whereas an irrational number is a number that is not rational in nature means it neither be expressed in the form of p/q nor in ratio terms. Example: √12, √3
Product of two irrational numbers: √2* √2 = 4 (which is a rational number)
Product of again two irrational numbers: √2*√3= √6 ( which is an irrational number)
Therefore, the product of two irrational numbers can be rational or irrational numbers.
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The product of two irrational numbers is an irrational number is false because it is either a rational or irrational number.
What is a rational number?A rational number is defined as a numerical representation of a part of a whole that represents a fraction number.
It can be a/b of two integers, a numerator a, and a non-zero denominator b.
The product of two irrational numbers √3 ×√3 = 3
This is a rational number.
Again, the product of two irrational numbers: √5 ×√3 = √15
This is an irrational number.
As a result, the product of two irrational integers can be both rational and irrational.
Thus, the product of two irrational numbers is an irrational number is false because it is either a rational or irrational number.
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What is the mathematical model of different dimensions but same volume?
Prism is the mathematical model with different dimensions but same volume.
As given in the question,
Mathematical model represent different dimensions but same volume.
Prism is the mathematical model with different dimensions but same volume.
To prove it consider two different dimensions of prism.
Prism 1
length = 4cm
Width = 4cm
Height = 4cm
Surface area of the prism1 = 2( 4×4 + 4×4 +4×4)
= 2(48)
= 96cm²
Volume of prism1 = 4×4×4
= 64cm³
Prism 2
length = 8cm
Width = 2cm
Height = 4cm
Surface area of the prism1 = 2( 8×2 + 2×4 +4×8)
= 2(56)
= 112cm²
Volume of prism1 = 8×2×4
= 64cm³
Therefore, prism is the mathematical model with different dimensions but same volume.
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find two rational numbers lying between 1 and 1.2
Answer:
1.1 and 1.12
Step-by-step explanation:
a rational number is any number that can be written as a fraction or a decimal that does not go on forever (unless it is a repeating decimal, ex: 3.454545..)
so any decimal that can be written as a fraction that is between 1 and 1.2 works
Write in all missing angles.
Answer:
The answers are all there. 50° + 22°= 77°
180° - 77° = 103°
Step-by-step explanation:
All the rest is just mirrored.
Urgenttt!!!!!!!!!!!!!
Which of the following expressions is accurate for angle 8 that intersects the unit circle at point (-0.949, 0.314).
Cos(0) = - 0.949 this expression is accurate for the unit circle which is intersected at point by angle 8 according at point (-0.949, 0.314).
What is circle ?An elliptical plane figure is a circle. From a fixed location known as the circle's center, each point on the circle is equally distant. It has a two-dimensional (2D) shape and a radius value. The Latin word "circulus" (which means little ring) is the root of the English word "circle."A circle is a two-dimensional shape that is made up of a collection of points that are spaced out from the center of the circle (its fixed point) on the plane by a fixed or constant distance (radius). The radius of a circle is the fixed distance between points that is fixed from the fixed point, which is known as the origin or center of the circle.
The terminal side of angle 0 intersects the unit circle at point P(- 0.949, 0.314) That means, OQ = 0.949 and PQ = 0.314
Here, OP is the radius of the unit circle. So, OP = 1
In respect of angle 0, the adjacent side is OQ and the hypotenuse is OP.
We know that,
cos= [tex]\frac{adjacent}{hpotenusey}[/tex]
So,
cos(0) = - [tex]\frac{OQ}{OP}[/tex] [As the angle is in quadrant II, so cos is negative]
cos(0) = - [tex]\frac{-0.949}{1}[/tex]
cos(0) = - 0.949
Cos(0) = - 0.949 this expression is accurate for the unit circle which is intersected at point by angle 8 according at point (-0.949, 0.314).
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Mom and Dad have decided to put themselves on a strict budget so that the family can save money to go onvacation. For breakfast, the family decides to spend no more than $20.00 for the week.Each day, the family eats 1/3 of a pound of granola and drinks 2/7 of a liter of milk for breakfast.Milk costs $4,49 per liter, but different types of granola have different prices.If the family only buys one type of granola for the week, what is the price per pound of the most expensivegranola they can afford?Explain your solution using logic, tables, graphs, and/or algebraic reasoning.
For breakfast, the family decides to spend no more than $20.00 for the week.
Each day, the family drinks 2/7 of a liter of milk for breakfast.
For the entire week, the amount of milk consumed is
[tex]7\times\frac{2}{7}=2\; \text{liters}[/tex]Milk costs $4,49 per liter, so the cost of the total amount of milk consumed is
[tex]2\times\$4.49=\$8.98[/tex]So, the amount left for the granola is
[tex]\$20.00-\$8.98=\$11.02[/tex]Each day, the family eats 1/3 of a pound of granola for breakfast.
For the entire week, the amount of granola consumed is
[tex]7\times\frac{1}{3}=\frac{7}{3}\; \text{pounds}[/tex]Let x be the price per pound of the most expensive granola they can afford.
[tex]\begin{gathered} \frac{7}{3}\cdot x=\$11.02 \\ x=\$11.02\cdot\frac{3}{7} \\ x=\$4.72 \end{gathered}[/tex]Therefore, the most expensive granola they can afford is $4.72
The graph of a 3rd degree polynomial is shown below. Use the Fundamental Theorem of Algebra to determine the number of real and imaginary zeros.
[tex]\quad \huge \quad \quad \boxed{ \tt \:Answer }[/tex]
[tex]\qquad \tt \rightarrow \:\texttt{real roots : 2 }[/tex]
[tex]\qquad \tt \rightarrow \: imaginary \: \: roots = 1[/tex]
____________________________________
[tex] \large \tt Solution \: : [/tex]
The given polynomial is a 3rd degree polynomial so it has a total of three roots.
And we know, where the curve (of polynomial) cuts the x - axis is its real root. so, from the graph we can infer that the given polynomial has 2 real roots [ as it cuts the x - axis at two points, i.e x = -2 and x = 1 ]
Hence, Number of real roots = 2
Number of imaginary roots = total roots - real roots
i.e 3 - 2 = 1
So, number of imaginary roots = 1
Answered by : ❝ AǫᴜᴀWɪᴢ ❞
What is the correct evaluation of 3x - x + 2, when x is equal to -4?
Answer:
When x = -4, the equation's answer is -6.
Hope this helps!
Step-by-step explanation:
3(-4) - ( -4 ) + 2
-12 - (-4) +2 ( negative times negative is positive )
-12 + 4 + 2
-8 + 2 or -12 + 6
is -6
Miguel pays $68 biweekly for health insurance which is 14% of the total cost his employer pays the rest what is the total annual cost to the nearest dollar of Miguel's health insurance
Cost of the health insurance is $11657.14
What is cost?
A cost is the worth of money that has been used up to create something or supply a service and is thus no longer accessible for use in production, research, retail, or accounting. In business, the cost might be one of acquisition, in which case the money spent to obtain it is recognized as cost. In this situation, money is the input that is used to purchase the item. This acquisition cost might be the total of the original producer's production expenses and the acquirer's additional transaction costs over and above the amount paid to the producer. Typically, the price includes a profit margin above the cost of manufacture.
14% of x = 68
x = 68 x 100/14
= $485.71
Total cost = $485.71 x 24 months = $11657.14
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On a coordinate plane, a graph curves up through (negative 2, negative 5) to inflection point (0, 1), and then curves up through (1, 4). Consider the graph shown. Which ordered pairs are on the inverse of the function? Check all that apply.
The ordered pairs are on the inverse function are (-5, -2) and (4, 1)
What are inverse functions?Inverse functions are the opposite of an original equation. This means that for a function f(x), the inverse of the function f(x) is f-(x); it also represents the opposite function
How to determine the ordered pairs on the inverse of the function?From the question, we have the following coordinate points
Point (negative 2, negative 5)Inflection point (0, 1)Curves up through (1, 4)Rewrite the points as:
Point (-2, -5)Inflection point (0, 1)Curves up through (1, 4)Remove the inflection point.
So, we have
Point (-2, -5)Curves up through (1, 4)The next step is to switch/swap the positions of x and y in the above equation ordered pairs
So, the points become:
Inverse point (-5, -2)Another inverse point (4, 1)Hence, the ordered pairs that are on the inverse function of the function are (-5, -2) and (4, 1)
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Answer:
its
A(-5,-2),
B(0,-1),
E(1,0),
F(4,1).
Step-by-step explanation:
i took one for the team
Circle whether the point is a solution to the inequality. Show work to support the answer.y ≤ 1/3x + 4 is (-6,2) a solution?Yes/No
Answer:Explanation:
Yes
The point is a solution if it satisfies the inequality.
In this case, the inequality is y ≤ (1/3)x + 4, so replacing (x, y) = (-6, 2), we get:
y ≤ (1/3)x + 4
2 (1/3)(-6) + 4≤
2 ≤ -2 + 4
2 ≤ 2
Since 2 is equal to 2, the inequality is satisfied and (-6, 2) is a solution.
So, the answer is Yes.
Balloon
1 reached
a height of X meters.
Balloon
2 reached a height of 7 times balloon 1.
Balloon 3 reached a height of half that of balloon 1.
Balloon 4 reached a height of 30 metres more than balloon 1.
The total height reached by all the balloons was 550 metres.
(a)
Formulate an algebraic expression to model the heights reached by balloons 2, 3
(b)
Find the heights reached by balloons 1, 2, 3 and 4.
Algebraic expression for Height of Balloon 2 = 7x and Height of Balloon 3 = x/2.
Heights reached by balloons 1, 2, 3 and 4 will be 54.73, 383.11, 27.36, 84.73 respectively.
We have the following given information as per the question
Balloon 1 reaches x m.
Balloon 2 reaches a height of 7 times balloon 1
∴ Balloon 2 reaches 7x m.
Balloon 3 reaches a height of half that of balloon 1.
∴ Balloon 3 reaches [tex] \frac{x}{2} [/tex] m.
Balloon 4 reaches a height of 30 meters more than balloon 1.
∴ Balloon 4 reaches ( x + 30 ) m.
Now As given The total height reached by all the balloons was 550 meters.
∴ Height of Balloon 1 + Height of Balloon 2 + Height of Balloon 3 + Height of Balloon 4 = 550 meter
∴ x + 7x + [tex] \frac{x}{2} [/tex] + (x + 30 ) =550
∴ 9.5x + 30 = 550
∴ 9.5x = 550 - 30
∴ 9.5x = 520
∴ x = 520/9.5
∴ x = 54.73 meter
(a) Algebraic expression to model the heights reached by balloons 2, 3 will be
Height of Balloon 2 = 7x = 7(54.73) = 383.11 meter
Height of Balloon 3 = x/2 = 54.73 / 2 = 27.36 meter
(b) The heights reached by balloons 1, 2, 3 and 4 will be as follows
Height of Balloon 1 = x = 54.73 meter.
Height of Balloon 2 = 7x = 7(54.73) = 383.11 meter
Height of Balloon 3 = x/2 = 54.73 / 2 = 27.36 meter
Height of Balloon 4 = x + 30 = 54.73 + 30 = 84.73 meter
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Jessie incorrectly said the rate 1/4 1/16 can be written as the unit rate 1/64 what is the correct unit rate
Correct Unit rate is 4 pounds per gallons.
What is unit rate?An item's unit rate is its price for one of it. This is expressed as a ratio with a one as the denominator. For instance, if you covered 70 yards in 10 seconds, you covered 7 yards on average every second. Seven yards in one second and 70 yards in ten seconds are both ratios, but only one of them is a unit rate. A unit rate is a ratio between two separate units with one as the denominator. Examples include miles/hour, kilometers/hour, meters/sec, salaries/month, etc.
Given Data
[tex]\frac{1}{4}[/tex] pounds = [tex]\frac{1}{16}[/tex] gallons
Rate = [tex]\frac{1}{4}[/tex] pounds ÷ [tex]\frac{1}{16}[/tex] gallons
Rate = [tex]\frac{1}{4}[/tex] × 16
Rate = 4
Unit rate is 4 pounds per gallons.
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Use Gaussian elimination or Gauss-Jordan elimination.
Mike works a total of 58 hr per week at his two jobs. He makes $7 per hour at job A and $8 per hour at job B. If his total
pay for one week is $424 before taxes, then how many hours does he work at each job?
Mike works 40 hours at job A and 18 hours at job B.
What are simultaneous equations?Simultaneous equations are two or more algebraic equations that share the same unknown variables and have the same solution for each of them. This suggests that the equations are simultaneous and have a single solution.
Given:
Mike makes $7 per hour at job A and $8 per hour at job B.
Let x be the number of hours Mike spends working at job A and y be the number of hours he spends working at job B.
Since he works a total of 58 hours per week,
x + y = 58
His total pay for one week is $424.
7x + 8y = 424
Solving both equations simultaneously we get,
From the first equation, we have, y = 58 - x
Putting the value of y in the second equation,
7x + 8(58 - x) = 424
7x + 464 - 8x = 424
8x - 7x = 464 - 424
x = 40
So, now calculate y = 58 - 40 = 18
Therefore, Mike spends 40 hours working at job A and 18 hours working at job B.
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