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3 years ago

Factoring completely

Mathematics

1 answer:

Marianna [84]3 years ago

4 0

This is called a difference of squares which always factors according to the rule for factoring the difference of squares....

(a^2+b^2)=(a+b)(a-b) in this case:

9w^2-16 so

(3w-4)(3w+4)

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Please help I don’t know the answer :(

gogolik [260]

Answer:

When x=8, y=-6. When x=10, y=0

Step-by-step explanation:

$y=3x-30\\x^2+y^2=100$

You can plug the given y value into the second equation to get:

$x^2+(3x-30)^2=100\\x^2+9x^2-180x+900=100\\10x^2-180x+800=0\\10(x^2-18x+80)=0\\10(x-8)(x+10)=0\\x= 8, 10\\y= -6, 0$

Hope this helps!

6 0

3 years ago

Read 2 more answers

A value of a car is $24,000. You pay it off by making payments of $6200 a year. Write and equation for when the car would be pay

Damm [24]

Answer: 24,000 / 6,200 = x years

Step-by-step explanation:

The car is valued at $24,000.

Yearly payments are $6,200.

The year that it will be paid off can be dtermined by calculating how long it would take $6,200 to get to $24,000.

You can do that by dividing $24,000 by $6,200.

Assume the number of years for the car to be paid off is x:

24,000 / 6,200 = x years

When solved:

= 24,000 / 6,200

= 3.87 years

4 0

3 years ago

I WILL GIVE YOU ALL MY PIONTS PLUS BRAINLIESTTT PLEASEEEEEE

Alla [95]

Answer:

Step-by-step explanation:

Given the line of best fit

y = - 9.21x + 168.7

Substitute the weight of the pumpkin , that is x = 5, into the equation.

y = - 9.21(5) + 168.7

= - 46.05 + 168.7

= 122.65 ≈ 123 feet ( to the nearest foot )

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3 years ago

A. Find the reflection of the point (-3, 2) about the origin.

nadezda [96]

Answer:

a. (3,-2)

b. (-5,-3)

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3 years ago

X-3<9 What’s the answer to this everbody should know

Murrr4er [49]

Answer:

x<12

Step-by-step explanation:

Let's solve your inequality step-by-step.

x−3<9

Step 1: Add 3 to both sides.

x−3+3<9+3

x<12

Answer:

x<12

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2 years ago