The class intervals appropriate to use in creating a histogram of the data are 0 – 30, 30 – 55, 55 – 80, 80 – 105, and 105 – 130. The correct option is B.
What are the class intervals?A histogram is used to represent data graphically. the histogram is made up of rectangles whose area is equal to the frequency of the data and whose width is equal to the class interval.
The width of the intervals must be equal. This means that the difference between the lower bound and the upper bound must be equal. Also, the upper bound of the preceding interval must be the same as the lower bound of the next interval.
This means that the intervals must be overlapping. Of all the options, it is 0 – 30, 30 – 55, 55 – 80, 80 – 105, and 105 – 130 that satisfy both conditions.
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Answer:first option
Step-by-step explanation:
a. Using parallel line relationships, find the value of
x. Use the relationship between the two marked
angles to set up your equation.
Show your work to support your answer. (4 pts)
x =
b. Find the measure of each of the angles. Don’t forget to label your answers.
Answer:
a and f are 14°
Angles b, c, d, and e are all 166°
Step-by-step explanation:
Alternate interior angles are congruent
x + 9 = 4x - 6 Subtract x from both sides
9 = 3x - 6 Add 6 to both sides
15 = 3x Divide both sides by 3
5 = x
Plug this back into the equation for find the angles measurements
x + 9
5 + 9
14
or
4x _ 6
4(5) -6
20 - 6
14
angles a and f are vertical angles so they are congruent and equal to 14
B ,c , d and e are all supplements to the found angles
180-14 = 166
Sun 4 Dec
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In a class of 30 students, 13 of them are boys.
What percentage of the class are girls?
Give your answer to 1 decimal place.
Answer:56.6%
Step-by-step explanation:
30 - 13 = 17
17 /30 x 100 = 56.6 %
Multiply (-8.328)(15.99)
Answer:
-133.16472
Step-by-step explanation:
N/A
Answer:
-133.16472
Step-by-step explanation:
Solve each system by elimination: 3x-7y=6 2x+7y=4
Answer:
Your answer is [tex]x=2[/tex] and [tex]y = 0[/tex]
Step-by-step explanation:
(attached)
Answer:
(2,0)
x=2, y=0
Step-by-step explanation:
(-2)3x-7y=6(-2)
(3)2x+7y=4(3)
-6x+14y=-12
6x+21y=12
-6x+14y=-12+6x+21y=12
35y=0
y=0
sub into one of the original equations
2x+7(0)=4
2x=4
x=2
3. For babysitting, Nicole charges a flat fee of $3, plus $5 per hour. Write an equation
for the cost, C, after h hours of babysitting. What do you think the slope and the y-
intercept represent? How much money will she make if she baby-sits 5 hours? Graph
HELP MEEEEE PLEASEEEEEE
The bus is covering a distance of 42 miles in 1 hour 30 minutes then the speed of the bus will be 28 mph.
What is Average speed?
The overall distance the object covers in a given amount of time is its average speed. The scalar quantity represents the average speed. It does not have direction; it is represented by magnitude.
As per the given data provided in the question,
Total distance traveled by bus = 42 miles
Total time is taken by the bus = 1 hour 30 minutes = 1.5 hours.
Then the average speed of the bus will be,
[tex]Average\ Speed(S) = Total\ Distance/Total\ Time[/tex]
S = 42/1.5
S = 28 mph.
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please help me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
EP = GP
GP = HP
angle EFH = 45
Think these 3 are the right answers, hope it helps.
You move left 7 units. You end at (-3, -5). Where did you start?
Answer:
[tex](4 , -5)[/tex]
Step-by-step explanation:
Note that when you move left or right any amount of units, you will be making the changes to the x-variable. If you move up or down any amount of units, you will be making the changes to the y-variable.
In this case, it is given that:
(x , y) = (-3 , -5)
You will want to move right 7 units, as you are trying to find your starting position. Add 7 from the x variable:
[tex](x , y) = (-3 , -5) = (-3 (+7) , -5)\\\\= (-3 (+7) , -5)\\= ((-3 +7) , -5)\\= (4 , -5)[/tex]
[tex](4 , -5)[/tex] is your starting position.
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after 3 days a sample of radon-222 has decayed to 58% of its original amount. (a) what is the half-life of radon-222? (b) how long will it take the sample to deca
The half-life of radon-222 is 3 days, it will take an additional 3 days for the remaining 42% of the sample to decay, for a total of 6 days for the sample to decay completely.
What is half life of an element?The half-life of a radioactive is time for 50% of its particles to decay or disintegrate into a new element. The pace at which a radioactive material will decay is predicted using this indicator of an isotope's stability. An element's half-life, which differs substantially across various elements, is based on the unique characteristics of its nucleus.
For instance, the half-life of uranium-238 is 4.5 billion years whereas that of carbon-14 is 5,730 years. This indicates that half of the carbon-14 atoms in a sample will have decayed after 5,730 years, and half of the uranium-238 atoms will have decayed after 4.5 billion years.
How to solve?
(a) After 3 days, the sample has decayed to 58% of its original amount, which means that half of the original amount has already decayed. Therefore, the half-life of radon-222 is 3 days.
(b) Since the half-life of radon-222 is 3 days, it will take an additional 3 days for the remaining 42% of the sample to decay, for a total of 6 days for the sample to decay completely.
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Rex deposited $900 into an
account that earns 4% simple
interest. How many years will it
take for the value of the
account to reach $1,800?
The number of years for the value of $900 to reach $1,800 if the rate of interest is 4%, is 25 years.
What is interest?When the loan is given to you, then some amount is charged to you for the principal amount and that is called interest.
Given:
The amount after some years, A = $1800,
The rate of interest, r = 4% per annum,
The principal amount, p = $900,
Calculate the number of years as shown below,
A = P + SI
1800 = 900 + p × r × t / 100
Here, t is the time in years,
1800 - 900 = 900 × 4 × t / 100
900 = 3600t / 100
900 = 36t
t = 900 / 36
t = 25
Thus, the number of years will be 25.
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what value of k does the equation k + 4/x +3/x^2 =0. (I) two real and different roots. (Ii)coincident and real root. (iii) no roots
The value of k will be equal to 4/3 and there will be two real and different roots.
What is a quadratic equation?It is a polynomial with a degree of 2 or the maximum power of the variable is 2 in quadratic equations. It has two solutions as its maximum power is 2.
Given that the equation is k + 4/x +3/x² =0. The value of k will be calculated as,
k + 4/x +3/x² =0.
kx² + 4x + 3 = 0
b² - 4ac =0
4² = 4 x k x 3
16 = 12k
k = 4/3
Therefore, the value of k will be equal to 4/3 and there will be two real and different roots.
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The price of the shirt was $38. It was reduced by 20% and then again by 10%. What was the final price of the shirt?
Answer:
Step-by-step explanation:
$38, 20% off = $30.40
$30.40, 10% off = $27.36
$27.36 is the final price of the shirt
What is the value of cosine (startfraction x over 2 endfraction) if tangent x = one-half and x is in quadrant iii? negative startstartroot startfraction 5 minus 2 startroot 5 endroot over 10 endfraction endendroot negative startstartroot startfraction 5 + 2 startroot 5 endroot over 10 endfraction endendroot startstartroot startfraction 5 minus 2 startroot 5 endroot over 10 endfraction endendroot startstartroot startfraction 5 + 2 startroot 5 endroot over 10 endfraction endendroot.
Given that x is in quadrant 3, its value for tan x=1/2 will be 206.565°, and its value for cos(206.565°) will be -0.894.
What is trigonometry?Trigonometry is the study of angles and the angular relationships between planar and three-dimensional shapes. The cosecant, cosine, cotangent, secant, sine, and tangent are among the trigonometric functions (also known as the circle functions) that make up trigonometry. The sine, cosine, and tangent are the three fundamental trigonometric operations. The cotangent, secant, and cosecant functions are derived from these three basic functions. On these functions, all trigonometrical concepts are built.
Here,
Tan x=1/2
π<x<3π/2
x=tan⁻¹/²(1/2)
x=26.565°
As the x is in quadrant 3,
=180+26.565°
=206.565°
cos(206.565°)=-0.894
The value of x for tan x=1/2 will be 206.565° as x is in quadrant 3 and for the same value of x, cos(206.565°) will be -0.894.
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Answer:
-sqrt 5 - 2 sqrt 5/10
Step-by-step explanation:
Edge 2023
Compare the function f(x)=3x-1/2 to the function shown in the graph. Which statements are
correct?
A certain medicine is given in an amount proportional to a patient's body weight. Suppose a patient weighing 164 pounds requires 205
milligrams of medicine. What is the weight of a patient who requires 173.75 milligrams of medicine?
pounds
The amount of medicine required for a patient whose weight is 173.75 pounds will be equal to 217.18 milligrams.
What is the ratio?The ratio notion is used in mathematics when evaluating two or more numbers. It works as a comparison tool to demonstrate how big or small a particular number is. A ratio divides two quantities to compare them.
As per the data given in the question,
Weight of patient = 164 pounds
Medicine for 164 pounds weight = 205 milligrams
Weight of another patient = 173.75 pounds
Let the amount of medicine required is x.
So,
164 pounds = 205 milligrams and,
173.75 pounds = x milligrams
Perform Cross-multiplication,
164x = 205 × 173.75
x = 35618.75/164
x = 217.18 milligrams.
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Find the measure of angle f given the information below.
Answer:
53 degrees
Step-by-step explanation:
This is a transversal question (look at attached). Because the lines are parallel, g will equal to 180(a straight line is 180 degrees) - a. Then, because g + f + e = 180 (since it is a straight line), substitute the values that we know and solve. (61) + f +(66) = 180. f = 53
What is the answer I need answers now I'm going to fail pls explain to I need answers quickly.
The factorization given is not a prime factorization.
Given that,
A factorization of a number is given we have to discuss whether the factors are prime factors or not.
A number or algebraic expression that evenly divides another number or expression—i.e., leaves no remainder—is referred to as a factor.
here,
Given factorization = 2² + 3 + 5⁴ + 8 + 11².
Since the above 8 cannot be taken in prime factor,
So the given factorization is not the prime factorization of the number.
Thus, the factorization given is not a prime factorization.
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A blueberry pie is made of 10 inch diameter pie pan.the pie is cut into 8 equal slides.what is the area of 1 slice
Cutting perfect slices of pie can be tricky. Crusts can crumble, bottoms can buckle and fillings can spill over, but there are a lot of tricks for a good slice.
What is diameter?In a circle, diameter is a line that passes through the center and meets the circumference at opposite ends. It is twice as long as that of the radius of the circle. In other words, the diameter of a circle is the line that passes through the center and divides the circle into two equal parts. Let us learn more about diameter definition and properties in this article.The diameter of a circle is any straight line segment that passes through the center of the circle and whose endpoints lie on the circumference of the circle. The diameter is also known as the longest chord of the circle.To learn more about diameter refer to:
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U
44°
T
V
R
25°
S
mTQ= type your answer...
type your answer.
mTQ=
mQR =
mTS =
mSQR
mRQT =
=
mTS=
mQR=
Answer:
Step-by-step explanation:
TQ = 44 + 25 = 69°
QR = 180 - 25 = 155°
TS = 180 -(44 + 25) = 180 - 69 = 111°
SQR = 180 + 155 = 335°
RQT = 180 + 44 = 224°
Shaun won 6 out of the 10 video games he played. What percent of the video games did Shaun win?
Answer:
60%
Step-by-step explanation:
Shaun won 60% percent of the games.
Answer:
Shaun won 60% out of the 10 video games he played.
Step-by-step explanation:
If Shaun played 10 video games and only won six out of all of them, he won 60% since we can count 10 as 100% and 6 as 60%.
I NEED HELP ASAP
FIRST TI ANSWER GET BRAINLEST
Answer:
4.
y = -1/6 * x - 7/3
Step-by-step explanation:
We can just check:
1.
y = -1/6 * x
this doesn't work for x = -2 and y = -2 (first point) because we get
-2 = -1/6 * -2 = 1/3
this is nonsense
2.
y = -6x - 3/7
this doesn't work for x = -2 and y = -2 (first point) because we get
-2 = -6 * -2 - 3/7 = 12 - 3/7 = 11 + 4/7
this is nonsense
3.
y = -6x
this doesn't work for x = -2 and y = -2 (first point) because we get
-2 = -6 * -2 = 12
this is nonsense
4.
y = -1/6 * x - 7/3
this works for x = -2 and y = -2 because
-2 = -1/6 * -2 - 7/3 = 2/6 - 7/3 = 1/3 - 7/3 = -6/3 = -2
it also works for x = 4 and y = -3 because
-3 = -1/6 * 4 - 7/3 = -4/6 - 7/3 = -2/3 - 7/3 = -9/3 = -3
The perpendicular biector of ide AB of triangle ABC interect ide AB at point D and BC at point E. If angle CAB = 82 degree and angle C = 68 degree, what i angle CAE
The angle of CAE is 22
What is perpendicular bisector ?A line known as a perpendicular bisector cuts a specified line segment precisely in half, creating a 90° angle at the junction. The intersection of a line segment's midpoint with a perpendicular bisector. It can be built with a compass and a ruler. On both sides of the line segment being divided, it forms a 90° angle.
Perpendicular bisector of ABC's side AB crosses BC at point E and side AB at point D. Additionally, m CAB = 82 and m C = 68.
Adopt A E.
In ABC, the triangle's angle sum property is A+B+C=180°.
82°+∠B+68°=180°
∠B= 180°-150°
∠B=30°
AD=B DDE is a perpendicular bisector in A DE and B DE.
If ADE=BDE=90°
DE is common.
Δ A DE ≅ Δ E DB→→[S AS]
∠DEB=∠D A E→→[CPCT]----(1)
In Δ DBE
∠EDB + ∠DBE+∠BED=180°→→Angle sum property of Triangle.
90° +30°+∠BED=180°
∠BED=180°-120°
∠BED=60°
So, ∠BAE=∠BED=60°------[using (1)]
∠CAE=∠CAB - ∠BAE
= 82°-60°
= 22°
Therefore the angle CAE is 22
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A full pond containing 625 gallons of water begins losing its water at a rate of 20% per week. If the pond now contains 320 gallons of water, how many weeks has it been since the pond was at full capacity?
(Use the digits 0 – 9 to enter a number. Use a decimal point only if necessary.)
If the pond now contains 320 gallons of water, number of weeks it has been since the pond was at full capacity is 5 week.
Given that, a full pond containing 625 gallons of water begins losing its water at a rate of 20% per week.
What is percentage?Percentage is defined as a given part or amount in every hundred. It is a fraction with 100 as the denominator and is represented by the symbol "%".
Here, number of gallons water being used for x weeks is
625-320=305 gallons
Now, number of gallons of water used in a week= 20% of 305
= 20/100 ×305
= 0.2 ×305
= 61 gallons
So, number of weeks = x=305/61
= 5
Therefore, if the pond now contains 320 gallons of water, number of weeks it has been since the pond was at full capacity is 5 week.
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Answer:
5
Step-by-step explanation:
Look that guys answer is better
What is inverse of the function f(x) = 4(x - 3)?
The inverse of the function f(x) = 4(x - 3) is f⁻¹(x)=(x+12)/4.
What is meant by inverse function?A function that "undoes" another function is known as an inverse in mathematics. In other words, if f(x) generates y, then y entered into f's inverse creates x. x . Invertible refers to a function that has an inverse, which is represented by the symbol f1.
Inverse functions are functions that "reverse" one another in the broadest sense. If f, for instance, goes from a to b, then its inverse, f 1 f -1 f 1f, start superscript, minus 1, end superscript, must go from b to a.
Make f a function. Any horizontal line that crosses the f graph more than once indicates that f lacks an inverse. F has an inverse if there are no horizontal lines that cross the graph of f more than once.
Let f(x)=y
f(x)=4(x-3)
f(x)=y
y=4(x-3)
x=4(y-3)
x=4y-12
4y=x+12
y=(x+12)/4
Therefore, f⁻¹(x)=(x+12)/4
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Hector spent 40. 15 for the dvds the sales tax was 2. 55 and he didnt have a coupon? How much would each dvd cost? please help fast
The cost of each DVD as per the given data will be 20.08 without tax. and 21.35 with sales tax.
Cost of DVD,
with sales tax
(40.15 + 2.55) / 2
= 42.70/2
= 21.35 per DVD
without sales tax
40.15 / 2
= 20.08 per DVD
Sales taxes are a type of tax that is paid to a governing body when goods and services are sold. Sales tax is an indirect tax that is often assessed at the time that certain taxable products are purchased or exchanged. It is assessed as a percentage of the item's retail price.
The government in power and the specific rules it enforces determine the sales tax, which is typically easy to calculate and collect. The sales tax can be thought of simply as an additional sum of money paid while buying products or services.
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Use the original price and the markdown to find the retail price.
Original price: $110; Markdown: 30%
Answer:
Step-by-step explanation:
regergergr
A line with a lope of 1/6 pae through the point (0,-3) what i it equation in lope intercept form
An equation of line having slope 1/6 and passes through the point (0,-3) is y = 1/6x - 3
We know that the slope-point form of line is:
(y - y1) = m(x - x1)
Here, we need to find an equation of line having slope 1/6 and passes pae through the point (0,-3)
let (x1, y1) = (0, -3)
and m = 1/6
substitute values in above formula,
(y - (-3)) = 1/6 (x - 0)
y + 3 = 1/6 (x)
y = 1/6x - 3
which is slope-intercept form of line (y = mx + b)
Therefore, equation of line is y = 1/6x - 3
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The denominator of a fraction is 2 more than the numerator. If 1 is added to both, the fraction reduces to 4/5. Find the fraction
The fraction is 7/9 according to given information.
What is fraction?
A fraction, which derives from the Latin word fractus, which means "broken," is a portion of a whole or, more broadly, any number of equal parts. A fraction, such as one-half, eight-fifths, or three-quarters, indicates how many parts of a particular size there are when spoken of in everyday English. A common, vulgar, as well as simple fraction is one that has a non-zero denominator displayed below (or after) the line that separates the numerator from the denominator. Compound fractions, complex fractions, as well as mixed numeral fractions are examples of uncommon fractions that use numerators and denominators.
Main Body:
Let the fraction be a/b
In First condition
b = a + 2(1)
In Second condition
a + 1/b + 1 = 4/5
5(a + 1) = 4(b + 1)
5a + 5 = 4b + 4
5a - 4b = 4 - 5
5a - 4b = -1
Using 1
5a - 4(a + 2) = -1
5a - 4a - 8 = -1
a = 8 - 1
a = 7
Now,
Using 1
b = a + 2
b = 7 + 2
b = 9
Fraction = a/b = 7/9
hence , the fraction is 7/9.
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Please help me!! Help by finding the measure of angle 2
Answer:
Below
Step-by-step explanation:
Sum of interior angles for the uppr right triangle = 180
52 + 90 + '2' = 180
'2' =38°
Line r has an equation of y=
6/7x+1. Line s includes the point (7,–7) and is perpendicular to line r. What is the equation of line s?
The equation of line s is y + 7 = -7/6(x - 7).
What is slope of a line?
A line's steepness and direction are measured by the line's slope. A line's slope is determined by how its y coordinate changes in relation to how its x coordinate changes. y and x are the net changes in the y and x coordinates, Δy, Δx respectively. Consequently, it is possible to write the change in y coordinate with respect to the change in x coordinate as m = Δy/Δx
Given equation of line r is y = 6/7x+1.
The slope of line r is m = 6/7
The slope of the line that is perpendicular to line r is -1/m = - 7/6.
The equation of line that passes through the point (x₁, y₁) with slope m is y - y₁ = m(x - x₁).
Putting m = - 7/6, x₁ = 7 and y₁ = -7 in y - y₁ = m(x - x₁):
y - (-7) = - 7/6(x - 7)
y + 7 = - 7/6(x - 7)
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