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3 years ago

10

3^2 is an example of

2 answers:

Lera25 [3.4K]3 years ago

7 0

Answer:

Exponents or powers.

weeeeeb [17]3 years ago

7 0

Answer:

an exponent

Step-by-step explanation:

$3 {}^{2}$

is an exponent

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Triangle Q M N is shown. The length of Q M is 18, the length of M N is 17, and the length of Q N is 20. Law of cosines: a2 = b2

kvasek [131]

Answer:

53°

Step-by-step explanation:

17² = 18² + 20² - 2(18)(20) cos Q

289 = 324 + 400 - 720 cos Q

289 = 724 - 720 cos Q

-435 = -720 cos Q

0.6042 = cos Q

$cos^{-1} (0.6042) = Q$

Q = 52.83

3 0

3 years ago

Alvin is 7 years older than Elga. The sum of their ages is 97. What is Elga's age?

LenaWriter [7]

Elga's age = x

Alvin's age = x + 7

x + x + 7 = 97.

Simplify the left side of the equation

2x + 7 = 97.

Subtract 7 from each side

2x = 90.

Divide each side by 2

x = 45

Since x is equal to Elga's age, Elga is 45 years old

4 0

3 years ago

I'm really confused about this question about Solving Systems by Elimination

velikii [3]

Answer:

x=10

y=2

Step-by-step explanation:

1)add the equations and find what x is.

x-y=8

+x+y=12

—————

2x=20

— —

2 2

x=10

3)fill in x for the second equation.

x+y=12

since x=10,replace x with 10.

10+y=12.

subtract 19 from both sides.

10+y=12

-10 -10

—————-

y=2

4 0

3 years ago

The tables show the cost for different numbers of song downloads.

iren [92.7K]

Answer:

D

Step-by-step explanation:

its the right answer bc its proportional

8 0

3 years ago

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Answer:

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1 year ago