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3 years ago

5

Which values of a and b make the following equation true (5x^7y^2) (-4x^4y^5) = -20x^a y^b

1 answer:

Nadya [2.5K]3 years ago

5 0

In x^7•x^4, how many x’s are multiplied together? (There’s 7 in the first factor and 4 in the second.)

x^7•x^4 = x^__? This is your a-value.

Similarly, y^2•y^5 = y^__? How many y’s are there in total being multiplied? This is your b-value.

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Is 100,60,50 a right triangle

zzz [600]

Answer:

I dont think so because a right triangle should have a 90 degree

7 0

3 years ago

SOMEONE PLEASE HELP!

Andrews [41]

Answer:

17.2°

Explanations

To find angle A, use the cosine rule.

a^2 = b^2 + c^2 - 2 × a × c cos A

4^2 = 7^2 + 10^2 - 2 × 7 × 10 cos A

16 = 49+ 100 - 140 × cosA

16 = 149 - 140cosA

16- 149 = - 140cosA

-133 = - 140cosA

cosA = 133/140

cosA = 0.95

A = 17.2°

7 0

1 year ago

If the area of a circle measures 25π cm2, what is the circumference of the circle in terms of π? A) 5π cm B) 10π cm C) 50π cm D)

Bad White [126]

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8 0

3 years ago

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Snezhnost [94]

I believe it's the first option. Hope this helps.

3 0

3 years ago

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An ice cream factory makes 29 quarts of ice cream in 5 hours. How many quarts could be made in 48 hours ? What was that rate per

Vadim26 [7]

We can easily get the quarts per hour rate by dividing the number of quarts by the number of hours:

$\text{29 quarts in 5 hours} \implies \dfrac{29}{5} = 5.8 \text{ quarts in 1 hour}$

Now that we have the quarts per hour rate, we can easily address the question: the factory could make

$5.8\cdot 48 = 278.4$

quarts in 48 hours, with a daily rate of

$5.8\cdot 24 = 139.2$

quarts per day

6 0

2 years ago

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