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3 years ago

Multiplying Polynomials, Simplify with Work Shown.

Mathematics

1 answer:

barxatty [35]3 years ago

8 0

12x^2+14x-60x-70

12x^2-46x-70

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Please help! i was wondering how you would solve this question!

Anon25 [30]

Answer: C. 150 km²

Step-by-step explanation:

Use similar triangle proportion to find x:

$\dfrac{x}{4.5}=\dfrac{15.3+7.4}{7.4}\\\\\\x=\dfrac{4.5(22.7)}{7.4}\\\\\\x=13.8\\\\\text{Notice that x is the diameter of the circle}\implies r=\dfrac{13.8}{2}=6.9\\\\\\\text{Find the area of the circle using }A=\pi r^2\\A=\pi (6.9)^2\\\\.\ =\pi (47.6)\\\\.\ =149.6\\\\.\ \approx150$

4 0

3 years ago

What is the percentage of 0.0015

Hitman42 [59]

You have to remember that 1 equal 100% and that what you need to do is just to multiply the number by 100 and add at the end symbol % .
.0015 * 100 = 0.15%

8 0

4 years ago

Evaluate each expression for a = -4, b = 3, and c = 2. 3a-1

irakobra [83]

Answer:

the answer is -13

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

can somebody please help my friend, she has asked everyone she knows and nobody knows how to solve it. please help ty

Nady [450]

Answer:

Step-by-step explanation:

First I'm going to assume that C and A are perpendicular.

Because its perpendicular, this creates a 90 degree angle which can be used to create the following equation.

$90 = 6x - 6 + 5x + 8$

Reduce

11x = 88

x = 8

We then plug in 8 into the equation 6x - 6 in order to solve for that angle.

6(8) - 6

4 0

3 years ago

What are the coefficients in the problem: 392 + 4x - 5y + x

vovangra [49]

Answer:

the coefficients are 4 and 5 and 1

Step-by-step explanation:

the 4 and 5 have a variable in front of them. There's a ghost 1 in front of the x, because it's value is 1 times whatever the value of x is

4 0

3 years ago