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3 years ago

C2 + c3 + c2 +c2 , algebra

Mathematics

1 answer:

kodGreya [7K]3 years ago

8 0

Answer:

c^8

Step-by-step explanation:

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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

4. Find the surface area. Help me please

pogonyaev

Step-by-step explanation:

2πrh+2πr²=surface area

2π(3)(6)+2π(3²)

36π+18π

54π

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3 years ago

I don’t really know ratios

Leokris [45]

Answer:

Pencils to erasers: 18:12 18/12 18 to 12

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Step-by-step explanation:

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2 years ago

tinas rectangular living room floor measures 15 feet by 18 feet.how many square feet of carpet will tina need to cover the entir

Thepotemich [5.8K]

Hello from MrBillDoesMath!

Answer:

270 in^2

Discussion:

Area of rectangular floor = length * width

= 15 * 18

= 270

Thank you,

MrB

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3 years ago

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Marta_Voda [28]

Answer:

Hey if its not for a grade why do it??

Step-by-step explanation:

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3 years ago

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