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3 years ago

GIVNING BRAINLIST

Mathematics

2 answers:

podryga [215]3 years ago

4 0

Answer:

I think it might be C

Step-by-step explanation:

tatyana61 [14]3 years ago

4 0

Answer:

I think C. please give other person brainliest though!!!!

Step-by-step explanation:

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What is the average of 11, 13, 18 and 22?

kirill [66]

Answer:

Step-by-step explanation:

To find the average, add up all the number and divide by the number of terms

(11+ 13+ 18 + 22)/4

64/4

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3 years ago

Read 2 more answers

Whats 2+2

Colt1911 [192]

2+2=4 because if you have 2 and you add another 2 you will have 4

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3 years ago

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Ilya [14]

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3 years ago

What is the slope of a line that passes through<br> the points (-6, -3) and (6, -7)?

saw5 [17]

Answer: -1/3 is the slope

Step-by-step explanation:

y=-1/3x-5 is what the equation looks like when you put it on a graph.

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4 years ago

Annie is framing a photo with a length of 6 inches and a width of 4 inches. The distance from the edge of the photo to the edge

Ede4ka [16]

Answer:

Part a) The quadratic function is $4x^{2} +20x-39=0$

Part b) The value of x is $1.5\ in$

Part c) The photo and frame together are $7\ in$ wide

Step-by-step explanation:

Part a) Write a quadratic function to find the distance from the edge of the photo to the edge of the frame

Let

x----> the distance from the edge of the photo to the edge of the frame

we know that

$(6+2x)(4+2x)=63\\24+12x+8x+4x^{2}=63\\ 4x^{2} +20x+24-63=0\\4x^{2} +20x-39=0$

Part b) What is the value of x?

Solve the quadratic equation $4x^{2} +20x-39=0$

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem

we have

$4x^{2} +20x-39=0$

$a=4\\b=20\\c=-39$

substitute in the formula

$x=\frac{-20(+/-)\sqrt{20^{2}-4(4)(-39)}} {2(4)}$

$x=\frac{-20(+/-)\sqrt{1,024}} {8}$

$x=\frac{-20(+/-)32} {8}$

$x=\frac{-20(+)32} {8}=1.5\ in$ -----> the solution

$x=\frac{-20(-)32} {8}=-6.5\ in$

Part c) How wide are the photo and frame together?

$(4+2x)=4+2(1.5)=7\ in$

5 0

3 years ago