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3 years ago

5

True or False: To factor a polynomial using the grouping method, factor out the common terms from the first two terms and then t

he last two terms in the polynomial.

1 answer:

yan [13]3 years ago

6 0

Consider the following x^4+5x^3+x^2+5x = x^3(x+5) and x(x+5) making your 2 factors (x+5) and (x^3 +x)

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miranda went to the music store to purchase some items. the sales tax was 5 percent per item. if she bought a dvd for $19, how m

posledela

$19/1.05= $18.095 rounds to $18.10
The sale tax on the item is $0.90

3 0

3 years ago

Read 2 more answers

In triangle ABC, a = 9, c = 5, and angle B = 120°. Find the measure of angle A to the nearest degree. Show your work.

slamgirl [31]

<u>Answer:</u>

Angle A = 39°

<u>Step-by-step explanation:</u>

We are given that there is a triangle ABC where a = 9, c = 5 and angle B = 120° and we are to find the measure of angle A.

But first we need to find the side b using the law of cosine:

$b^2 = a^2 + c^2- 2a*c*cos(120)$

$b^2 = 81 + 25 - 2*9*5*(-0.5)$

$b=\sqrt{151}$

Now finding angle A using law of cosine:

$cos(A) = \frac{b^2+c^2-a^2}{2b*c}$

$cos(A) = \frac{151+25-81}{2*12.29*5}$

$cos A=0.7730$

$A=39.38$

Therefore, the measure of angle A = 39°.

7 0

3 years ago

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Can someone help me?

Citrus2011 [14]

If you look at the model RM is the same length as PM. PM=10 so RM=10.

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3 years ago

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A technique that allows shoppers to compare prices?

Roman55 [17]

A) comparison shopping is the answer

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3 years ago

Mrs Thomas played a game. Her score changed the same amount each round. After 3 rounds, her score had changed by -18 points. How

lisabon 2012 [21]

Answer: -6

Step-by-step explanation: It changed -6 each round because -6x3=-18.\

Hope this helped!

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3 years ago