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3 years ago

Please help me with this quick problem! i'll mark brainliest

Mathematics

2 answers:

yKpoI14uk [10]3 years ago

6 0

Answer:

D - 22

Step-by-step explanation:

if each mark is going up by 2, go half way between the 10 and the 12 going up the graph you can see that at 11, the graph line passes through 22. giving you the point (11,22) x = 11 y = 22

Llana [10]3 years ago

4 0

D- 22
I went in between 8 and 12 I should be before 12 and see where that line hit the 11 spot

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Write a system of equations to solve the following problem. Let c be the number of child tickets and a be the number of adult ti

Elan Coil [88]

3C + 5A = 115
C + A = 33
A = 33 - C
3C + 5(33-C) = 115
3C + 165 - 5C = 115
-2C = -50
C=25
25+A=33
A=8

C=25, A=8

6 0

3 years ago

Read 2 more answers

Which point on the y-axis lies on the line that passes through

Lelechka [254]

Answer:

0(0,2)

Step-by-step explanation:

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4 years ago

What are the dimensions of a rectangular wall that can be constructed with 400 feet of brick that will maximize the area enclose

ollegr [7]

Answer:

The dimensions of the wall are 100 ft x 100 ft

Step-by-step explanation:

we know that

The perimeter of a rectangular wall is

$P=2(x+y)$

where

x is the length

y is the width

we have

$P=400\ ft$

$400=2(x+y)$

simplify

$200=x+y$

$y=200-x$ ----> equation A

The area of a rectangular wall is equal to

$A=xy$ ----> equation B

substitute equation A in equation B

$A=x(200-x)\\A=-x^2+200x$

This is the equation of a vertical parabola open downward (because the leading coefficient is negative)

The vertex represent a maximum

Convert the quadratic equation in vertex form

$A=-x^2+200x$

Factor -1

$A=-(x^2-200x)$

Complete the square

$A=-(x^2-200x+100^2)+100^2$

$A=-(x^2-200x+10,000)+10,000$

Rewrite as perfect squares

$A=-(x-100)^2+10,000$ ----> equation in vertex form

The vertex is the point (100,10,000)

The x-coordinate of the vertex represent the length of the wall for a maximum area

$x=100\ ft$

Find the value of y

equation A

$y=200-(100)=100\ ft$

therefore

The dimensions of the wall are 100 ft x 100 ft

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3 years ago

Dylan wants to construct the midpoint M of RS which diagram shows a way Dylan can accurately construct M using only a compass an

Xelga [282]

D is correct:

because of doing the correct steps:

step1: put the point of your compass on the left endpoint of the segment, A.
Open the compass to be more than half the length of the segment. Then leave a half-circle mark.
step2: do the same thing on the other point B. and find the middle point.

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3 years ago

On what intervals is the graph of f(x)=x^3-2x^2+5x+1 increasing?

amid [387]

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$f(x)=0.5x^2-6\\
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$f(x)=\dfrac{x+1}{x-1}\qquad(x\not=1)\\
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3 0

4 years ago