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zubka84 [21]
3 years ago
7

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:

0(0,2)

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4 0
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

so

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

so

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

4 0
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:

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8 0
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\\
f'(x)=x
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3 0
4 years ago
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