Answers
Answer:
28
Step-by-step explanation:
▪︎ ADE and ABC are similar triangles (AAA)
▪︎ DA = DB + BA = 30 + 12 = 42
▪︎ k = DA / BA = 42 / 12 = 3.5
▪︎ DE = BC * k = 8 * 3.5 = 28
Related Questions
x⁶y⁴/xy²
how would I simplify?
Answer choices:
A: x⁵y²
B:x⁶y²
C:x²y⁵
D:(xy)⁷
Answers
Step-by-step explanation:
please mark me as brainlest
Amelie wants to decorate the outside of the box but not the bottom. It is a 5 in. by 3 in. by 2 rectangular prism. If the beads that she is using cost $0.25 per square inch, how much will she pay for the beads? Her work is shown. surface area = 15 + 15 + 6 + 6 + 10 + 10 = 62 in. 2 cost = 0.25(62) = $15.50 Did she make an error? Yes, she should have only added the area of five of the six faces. Yes, she did not use the correct area formula for a rectangle. Yes, she calculated the cost incorrectly. No, she didn’t make any errors.
Answers
Answer:
Yes, she should have only added the area of five of the six faces.
Step-by-step explanation:
The formula for determining the surface area of a cuboid or box is expressed as
Surface area = 2lw + 2lh + 2wh
Where l, w and h represents length, width and height of the box respectively.
2lw represents the area of the top and the bottom of the box. Since she doesn't want to cover the bottom, it becomes lw. Therefore,
Surface area = 15 + 6 + 6 + 10 + 10 = 47 in².
The cost would be
0.25 × 47 = $11.75
Therefore,
Yes, she should have only added the area of five of the six faces.
A factory made 424 items in 4 hours at a
constant rate. Plot the points on the graph
to represent the total number of items
made each hour.
ty
400
300
200
100
X
Items
0
1
2 3
Hours
4
Answers
A graph is a way to represent a lot of data in a visual format. The graph can be drawn as using the equation y=100x+24.
What is a graph?A graph is a way to represent a lot of data in such a visual format that it is easy for the user to understand the complete information in one go. Usually, the line of the graph is a function that follows the graph.
Given a factory-made 424 items in 4 hours at a constant rate. Also, the table is given, therefore, the slope of the line can be written as,
m = (400-300)/(4-3) = 100
Therefore, the equation can be written as y=100x+C
now, substituting the point we will get,
424 = 100(4) + C
424 - 400 = C
C = 24
Therefore, the graph can be drawn as using the equation y=100x+24.
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13 = m/4 + 7 can you show work too
Answers
The correct value of this equation is m = 24
Resolution methodThis equation contains a fractional term. We note that the denominator of this equation is the term 4. Therefore, we will multiply the sides by 4:
13 = m/4 + 7
13 . 4 = 4(m/4) + 7 . 4
52 = m + 28
Now, let's isolate the variable "as negative" and after the equality - we'll be subtracting the terms:
52 = m + 28
-m = 28 - 58
-m = -24
m = 24
Therefore, the correct value of this equation will be m = 24
Find the volume of the sphere. Round your answer to the nearest tenth.
A sphere is shown with a radius of 7 feet.
The volume is about
cubic feet.
Answers
So we all know the FORMULA for a sphere is v=4/3 x π x r^3
So, now we SUBSTITUTE ,V=4/3 x π x 7^
This leaves us with the answer of 1436.76 ft ^2 maybe?
(hope this is correct!)
A trellis consists of overlapping wooden slats.
1.What is the position of the indicated angles?
2.What should the value of x be in order for the two slats to be parallel?
3. Which theorem or postulate will you use to prove the parallel slats?
4. Find the measure of the indicated angle
Answers
The position of the angles are corresponding angles.
The value of x should be 6 for the slats to be parallel.
The theorem use to prove the parallel slat is the corresponding angle theorem.
The measure of the indicated angles are 42 degrees.
How to know a corresponding angles?Corresponding angles are the angles that are formed when two parallel lines are intersected by the transversal.
Therefore, the position of the angles are corresponding angles
Since the angles are corresponding angles, they are congruent.
Therefore,
3x + 24 = 7x
24 = 7x - 3x
24 = 4x
x = 6
The theorem use to prove the postulate is the corresponding angle theorem.
The measure of the indicated angle can be calculated as follows:
7(6) = 42 degrees.
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Find CE.
Show your work!
Answers
The length of the chord CE is 24.46 in
To find the length of the chord CE, we solve the question using pythagoras' theorem
What is a chord?A chord is a line segment touching two points in a circle.
What is pythagoras' theorem?Pythagoras' theorem states that in any right angled triangle with sides a, b and c where c is the hypotenuse side, we have that
c² = a² + b²
The required triangle
Now form the diagram the radius of the circle BE forms a right angled triangle with the perpendicular to the chord, BO and the midway between the chord, OE.
BO = BD - OD
= 20 in - 5 in
= 15 in
From pythagoras,
BE² = DE² + BO²
making DE subject of the formula, we have
DE = √(BE² - BO²)
DE = √((20 in)² - (15 in)²)
DE = √(400 in² - 225 in²)
DE = √(175 in²)
DE = 13.23 cm
The length of the chord
Since the chord CE = 2DE,
So, CE = 2 × 13.23 in
= 26.46 in
So, the length of the chord CE is 24.46 in
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what are the solutions to to the equation x^2+4x+4=12
Answers
Answer:
[tex]x = -2 +2\sqrt 3\\\\x = -2 -2\sqrt 3[/tex]
Step by step explanation:
[tex]~~~~~~x^2 +4x +4 = 12\\\\\implies x^2 +2\cdot 2x + 2^2 = 12\\ \\\implies (x+2)^2 = 12\\\\\implies x +2 = \pm\sqrt{12}\\\\\implies x = -2 \pm\sqrt{12}\\\\\implies x = -2\pm\sqrt{4 \times 3}\\\\\implies x = -2 \pm2\sqrt 3[/tex]
What is the center of the circle described by the equation (x-6)² + (y + 5)² = 25?
Answers
Reason:
Rewrite the given equation into [tex](x-6)^2 + (y-(-5))^2 = 5^2[/tex]
I changed the y+5 into y-(-5), and also replaced 25 with [tex]5^2[/tex]
Then compare that to the circle template of [tex](x-h)^2 + (y-k)^2 = r^2[/tex]
We see that h = 6 and k = -5 to give a center of (h,k) = (6, -5)
Side note: the radius is r = 5 units
PLS HELP! If Cyrus knows that △ABC∼△EDC and AB¯¯¯¯¯¯¯¯∥ED¯¯¯¯¯¯¯¯, how can he prove that line m passing through AB¯¯¯¯¯¯¯¯ has the same slope as line l passing through ED¯¯¯¯¯¯¯¯?
Answers
Answer:
AB and DE are parallel because they have the same slope.
Step-by-step explanation:
Slope of the line AB :
[tex]=\frac{\text{rise} }{\text{run} } =\frac{CA}{-BC} =\frac{12}{-8} =-\frac{3}{2}[/tex]
Slope of the line DE :
[tex]=\frac{\text{rise} }{\text{run} } =\frac{CE}{-DC} =\frac{9}{-6} =-\frac{3}{2}[/tex]
Stuck on this. 60 points!
Answers
Answer:
Statement 1 and 2
Step-by-step explanation:
If you take t^2 - 16t + 55 and find some of its graphical values, you will get:
Turning point: (8,-9)
Roots: (5,0) and (11,0)
When this graph is plotted and you imagine the x axis to be time (as stated in the question), each of the roots (x - intercept) must be when the swimmer goes under and when they come back up.
This means that the swimmer dived under the water at 5 seconds and came back up at 9, making the first 2 statements correct.
Now the fourth statement is ruled out.
The fifth statement is not plausible as the graph would have to have more than 2 roots for the swimmer to enter the water twice.
That leaves the third statement. If you imagine the depth of the swimmer to be the y axis of our imaginary graph, and we know that the y axis of the turning point is -9, that means that the swimmer's deepest dive was 9 feet under the water, ruling out the third statement too.
Hope this helps :D
Answer:
[tex]h(t)= (t-5)(t-11)[/tex]
The swimmer comes back up 11 seconds after the timer is started.
The swimmer dives into the water 5 seconds after the timer is started.
Step-by-step explanation:
Given function:
[tex]h(t)=t^2-16t+55[/tex]
To factor a quadratic in the form [tex]ax^2+bx+c[/tex],
find two numbers that multiply to [tex]ac[/tex] and sum to [tex]b[/tex]:
[tex]\implies ac=55[/tex]
[tex]\implies b=-16[/tex]
Two numbers that multiply to 55 and sum to -16 are: -11 and -5
Rewrite b as the sum of these two numbers:
[tex]\implies t^2-11t-5t+55[/tex]
Factorize the first two terms and the last two terms separately:
[tex]\implies t(t-11)-5(t-11)[/tex]
Factor out the common term (t - 11):
[tex]\implies (t-5)(t-11)[/tex]
Therefore, the given formula in factored form is:
[tex]h(t)= (t-5)(t-11)[/tex]
The swimmer's depth is modeled as h(t). Therefore, when h(t) = 0 the swimmer will be at the surface of the water.
[tex]\implies h(t)=0[/tex]
[tex]\implies (t-5)(t-11)=0[/tex]
[tex]\implies t-5=0\implies t=5[/tex]
[tex]\implies t-11=0 \implies t=11[/tex]
Therefore, the swimmer will be at the surface of the water at 5 s and 11 s.
The swimmer's maximum depth is the vertex of the function. The x-value of the vertex is the midpoint of the zeros. Therefore, the x-value of the vertex is t = 8.
Substitute t = 8 into the function to find the maximum depth:
[tex]\implies h(8)=8^2-16(8)+55=-9[/tex]
So the swimmer's maximum depth is 9 ft.
True Statements
The swimmer comes back up 11 seconds after the timer is started.
The swimmer dives into the water 5 seconds after the timer is started.
Jenny spins a fair 4-sided spinner what is the probabiliity that the spinner will land on a or b
Answers
Answer:
Step-by-step explanation:
jenny spin a fair-4 spinner
The probability that the spinner will land on a or b will be 0.50.
What is probability?Its fundamental concept is that someone will nearly surely occur. The proportion of positive events in comparison to the total of occurrences.
Then the probability is given as,
P = (Favorable event) / (Total event)
Jenny spins a fair 4-sided spinner.
Let the section be marked as a, b, c, and d.
Then the total number of the event will be given as,
Total events = 4
Then the probability that the spinner will land on a or b will be given as,
P = 1/4 + 1/4
P = (1 + 1)/4
P = 2/4
P = 1/2
P = 0.50
The probability that the spinner will land on a or b will be 0.50.
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Question 9 of 10
Which pairs of angles in the figure below are vertical angles?
Check all that apply.
Answers
Answer:
B and C
Step-by-step explanation:
vertical angles are angles that are opposite of each other when two lines cross. Vertical angles are congruent = they are equally large.
the angles listed in B and C are mirrored across either an imaginary or a directly visible line. and that makes them vertical angles.
U.S. Birth Rate, 1950-2000
Year
Birth Rate
(per 1000 population)
1950
24.1
1960
23.7
1970
18.4
1980
15.9
1990
15.7
2000
14.7
Source: World Almanac 2003
Is the relation (year, birth rate) a function? Explain.
a.
No, there is a year with two birth rates paired with it.
b.
Yes, each year is paired with only one value for the birth rate.
c.
No, two years have a birth rate of over 20.
d.
No, there are no negative birth rate values.
Answers
Using it's concept, it is found that the correct option regarding whether the relation is a function is given by:
b. Yes, each year is paired with only one value for the birth rate.
When a relation represents a function?It represents a function if each value of the input is mapped to only one value of the output.
In this problem, the inputs are the decades(1950 to 2000), and each has only one rate, hence it is a function and option b is correct.
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Which of the following is the solution set of 6x + 5 = -29?
O {-4}
O {-17/3)
O (17/3)
Answers
Answer:
-[tex]\frac{17}{3}[/tex]
Step-by-step explanation:
3. Given the triangle below. Point T is the circumcenter. Point E bisects side MO. TE measures a length of 5. What is the length of MT? Round your answer to the nearest tenth.
Answers
Answer:
6.4
Step-by-step explanation:
E bisects side MO, plot it in the center of M and O
MO is 8, split into two even parts, 4 and 4
TE is 5
set up Pythagorean theorem, 5^2 + 4^2 = x^2 to find MT
25+16=x^2
41=x^2
x=6.403
Shelby mixes a 25% bleach solution with 5 cups of a 10% bleach solution, resulting in a 20% bleach solution. The table shows the amount of each solution used.
A table titled Bleach Solution showing Cups, Bleach concentration, and Total. The first row shows 10 percent Bleach with 5, 0.10, and 0.5. The second row shows, 25 percent bleach, with x, 0.25, and 0.25 x. The third row shows Mixture, with 5 plus x, 0.20, and 3.
What is the value of x?
Answers
Answer: is C
Step-by-step explanation: like i said making it easier .
1
2
X
-5
-4
-3
2
1
0
1
2
3
6
f(x)
-6
-2
0
4
4
0
-2
-6
-10
Based on the table, which best predicts the end
behavior of the graph of f(x)?
O As x, f(x)→∞, and as x→→∞, f(x)→∞.
O As x→∞, f(x)→∞, and as x→∞, f(x)→→∞
O As x, f(x)→∞, and as x→→∞, f(x)→∞
O As x→∞, f(x)→∞, and as x→∞, f(x)→
818
Answers
The statement that best describes the end behavior of the graph is given as follows:
As [tex]x \rightarrow -\infty, f(x) \rightarrow -\infty[/tex], and as [tex]x \rightarrow -\infty, f(x) \rightarrow \infty[/tex].
What is the end behavior of a function?It is given by it's limits as x goes to negative and positive infinity.
From the given table, it is found that f(x) starts with negative values, increases until it's maximum value then decays again, hence the correct statement is:
As [tex]x \rightarrow -\infty, f(x) \rightarrow -\infty[/tex], and as [tex]x \rightarrow -\infty, f(x) \rightarrow \infty[/tex].
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One day in a sporting goods store, 34 people came in and made purchases while 14 people came in but didn't buy anything. What's an unsimplified ratio, as a fraction, of the number of people who made a purchase and the number of people who came into the store
Answers
Answer:
34/48
Step-by-step explanation:
So to answer this problem, we need to know two things:
1) The number of people who made a purchase
2) The number of people who came into the store
The problem gives us 1), which is 34.
The answer for 2) is 34+14, since that's the total number of people who came into the store. This means that the ratio is 34/48.
Solve for x. Round to nearest tenth
SOMEONE PLEASE HELP ME WITH THIS ILL GIVE YOU BRAINLIST ANSWER
Image above
Answers
Answer:
x ≈ 0.5
Step-by-step explanation:
using the tangent ratio in the right triangle
tan63° = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{IJ}{JK}[/tex] = [tex]\frac{1}{x}[/tex] ( multiply both sides by x )
x × tan63° = 1 ( divide both sides by tan63° )
x = [tex]\frac{1}{tan63}[/tex] ≈ 0.5 ( to the nearest tenth )
Answer:
x = 0.5
Step-by-step explanation:
We can use tan Θ to find the value of x.
tan Θ = Opposite ÷ Adjacent
Let us solve it now
tan 63 = 1 ÷ x
1.9626 = 1 ÷ x
x = 1 ÷ 1.9626
x = 0.5095
x ≈ 0.5 ( nearest 10th )
can someone help me out?
Answers
The factor if the root is 2 is x - 2 and the factor if the root is -3 is c + 3
Factors of a polynomialAccording to the question, we are to find the factors of the polynomial expression
Given the polynomial expression
y = x² + x - 6
Factorize
y = x² + 3x - 2x - 6
y = x(x+3)-2(x+3)
y = (x-2)(x+3)
Hence the factor if the root is 2 is x - 2 and the factor if the root is -3 is c + 3
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Please help! Giving brainlist!
Answers
What is the area of a polygon with vertices of (-2,-4), (4,-4), (4, 4), and (-5, 4)?
216 square units
30 square units
120 square units
60 square units
Answers
Answer: 60 square units
Step-by-step explanation: i hope that helps buddy :)
Evaluate.
10! over
6!(12-8)!
Answers
Answer: 210
Step-by-step explanation:
! means, for example, 6! = 6 * 5* 4 * 3 * 2 * 1
Given:
[tex]\displaystyle \frac{10!}{6!(12-8)!}[/tex]
Subtract:
[tex]\displaystyle \frac{10!}{6!(4)!}[/tex]
Distribute:
[tex]\displaystyle \frac{10!}{6!*4!}[/tex]
Expand:
[tex]\displaystyle \frac{10 * 9 * 8 * 7 * 6 * 5* 4 * 3 * 2 * 1}{(6 * 5* 4 * 3 * 2 * 1)*(4 * 3 * 2 * 1)}[/tex]
Cancel out (6*5*4*3*2*1) in both the top and bottom as they equal 1:
[tex]\displaystyle \frac{10 * 9 * 8 * 7 }{4 * 3 * 2 * 1}[/tex]
Multiply:
[tex]\displaystyle \frac{5,040 }{24}[/tex]
Divide:
210
Simon easily defeats the kidnapper in
hand-to-hand combat outside the water tower,
but to get inside the tower he must figure out the
last digit to the combination lock on the door.
A riddle was left for Simon to solve, giving him the
number he needs... if he can solve it in time!
The riddle reads:
2
"A rectangle has an area given by x² + 2x - 24.
The number you seek is the sum of its length
and width when x = 5."
9) Find the last digit to the password by solving
the riddle! (A /4) hint factor to get the dimensions of the rectangle
Answers
The dimensions of the rectangle will be 4 and 6.
How to solve the value?From the information given, we are told that the area is given by x² + 2x - 24. We will expand this as follows:
x² + 2x - 24
x² + 6x - 4x - 24
x(x + 6) + 6(x - 4)
x - 4 = 0
x = 0 + 4
Therefore, the other dimension will be:
= 24/4
= 6
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can you solve the question but tell me how to do it I'm trying to study but don't know how to solve it?
Answers
Answer:
8x+19=9x+9
Step-by-step explanation:
Simplifying
(8x + 19) = (9x + 9)
Reorder the terms:
(19 + 8x) = (9x + 9)
Remove parenthesis around (19 + 8x)
19 + 8x = (9x + 9)
Reorder the terms:
19 + 8x = (9 + 9x)
Remove parenthesis around (9 + 9x)
19 + 8x = 9 + 9x
Solving
19 + 8x = 9 + 9x
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-9x' to each side of the equation.
19 + 8x + -9x = 9 + 9x + -9x
Combine like terms: 8x + -9x = -1x
19 + -1x = 9 + 9x + -9x
Combine like terms: 9x + -9x = 0
19 + -1x = 9 + 0
19 + -1x = 9
Add '-19' to each side of the equation.
19 + -19 + -1x = 9 + -19
Combine like terms: 19 + -19 = 0
0 + -1x = 9 + -19
-1x = 9 + -19
Combine like terms: 9 + -19 = -10
-1x = -10
Divide each side by '-1'.
x = 10
Simplifying
x = 10
Answer:
x = 10Step-by-step explanation:
they are opposite angles, therefore congruentwe solve with an equation8x + 19 = 9x +9
19 - 9 = 9x - 8x
10 = 1x
x = 10
check
-------------------
8 * 10 + 19 = 9 * 10 + 9
80 + 19 = 90 + 9
99 = 99
the answer is good
Explain how the expression 32 relates to the diver's depth
Answers
Answer:
See below
Step-by-step explanation:
Each 32 feet of depth is 1 more atmosphere of pressure on the diver
Question 4
1 pts
in 2013, the number of rabbits in a local park is 120, but this number is decreasing
each year by a constant percent. the number of rabbits in the park t years after 2013
can be found using the given formula. about how many rabbits will be left in the park
after 10 years?
r=120(0.99)
1,188
247
1
108
Answers
After 10 years, there will be 108 rabbits left in the park.
What is Exponential Equation?An exponential function is a function of form f (x) = aˣ, where “x” is a variable and “a” is a constant which is called the base of the function and it should be greater than 0.
Here, the given equation;
R = 120 (0.99)ⁿ
where, n is the number of years
n = 10 years (given)
R = 120 (0.99)¹⁰
R = 120 X 0.904
R = 108.52
Thus, After 10 years, there will be 108 rabbits left in the park.
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Enter the number that belongs in the green box.
Answers
Answer:
the green box is 0
Step-by-step explanation:
we are asked to find the x-intercept, which means y = 0
(x, y)
Another way to test this is plug it in 1 for x! (1, y) where x = 1
[tex]y = \frac{2x^{2} -3x+1}{2x^{2} +8x+6} \\\\[/tex]
[tex]y = \frac{2(1)^{2} -3(1)+1}{2(1)^{2} +8(1)+6}[/tex]
[tex]y = \frac{2(1) -3(1)+1}{2(1) +8+6}[/tex]
[tex]y = \frac{2 - 3 + 1}{2 + 8 + 6}[/tex]
[tex]y = \frac{-1+1}{10 + 6}[/tex]
[tex]y = \frac{0}{16}[/tex]
y = 0
Solve for d given -4d+6>10
Answers
Answer:
Scientific notation: 4 ⋅ 10 -4
expanded form: 0.0004