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Nookie1986 [14]

3 years ago

6

Jessie had a piece of cardboard that is 8.5 inches by 11 inches. She makes a picture frame with the cardboard box by cutting out

a 4 inch by 4 inch square from the center of the cardboard. What is the area of the frame?

2 answers:

Greeley [361]3 years ago

8 0

In my opinion, I think it’s in my opinion, I think it’s c

velikii [3]3 years ago

4 0

I could be very wrong, but I believe the answer is C

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Can someone please tell me what I'm doing wrong? I think I know how to do quadratic formula, and I know all the steps, but the l

Nata [24]

Okay, so first you set equal to 0:
$6-6x^{2}=3x\\-6x^{2}-3x+6=0$

Next simplify the equation so that the leading coefficient is positive:
$\frac{-6x^{2}-3x+6}{-3}=\frac{0}{3}\\2x^{2}+x-2=0$

Looking at the quadratic equation you can't easily simplify it, so plug it into the quadratic equation and simplify:
$x=\frac{-b\ -+\ \sqrt{b^{2}-4ac}}{2a}\\\\x=\frac{-(1)\ -+\ \sqrt{(1)^{2}-4(2)(-2)}}{2(2)}\\\\x=\frac{-1\ -+\ \sqrt{1+16}}{4}\\\\x=\frac{-1\ -+\ \sqrt{17}}{4}*\frac{-1}{-1}\\\\x=\frac{1\ -+\ \sqrt{17}}{-4},\ or\ B.$

I noticed a couple mistakes in your work, so if you want me to I can explain them in the comments section :)

5 0

3 years ago

Read 2 more answers

A polynomial has x-intercepts of 2, 0, and –1, and passes through the point (1, –10). Which functions could represent this graph

Kipish [7]

D or c depends if girl or boy

6 0

3 years ago

What is the simplified form of <br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%20%2B%206%7D%7B3%7D%20%20-%20%20%5Cfrac%7Bx%

solmaris [256]

Answer:

4/3

Step-by-step explanation:

x + 6 - (x + 2) / 3

= x - x + 6 - 2 / 3

= 4/3

6 0

3 years ago

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15 is 70% of what number

damaskus [11]

To find 70% percent of a number, multiply the number by 0.7. in this instance , 0.7 x 15= 10.5 .therefore, 70 percent of 15 is equal to 10.5

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3 years ago

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Aubrey, a pet store employee, wants to fit two fish tanks on one table. One fish tank is 1/6 of a foot wide and the other fish t

Anna007 [38]

Answer:

1/1

Step-by-step explanation:

1/6+5/6 simple adding with fractions its would be 1 foot

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3 years ago

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