3 years ago

Question 1

Mathematics

1 answer:

stiv31 [10]3 years ago

3 0

B, C, and D are the correct answers

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What is the solution to the system x+y=10 3y=-3x+30<br><br> PLEASE helpppp

choli [55]

Answer:

Step-by-step explanation:

x+y=10

x=10-y

x=10-5

x=5

3y= -3x+30

3(10-y)= -3(10-y)+30

30-3y= -30+3y+30

30+30-30=6y

30=6y

y=5

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3 years ago

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5.3/8.8=x/14.3
AB is x,
x= 2.43

Hope I helped.

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3 years ago

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3225.36

Step-by-step explanation:

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4 years ago

Tina uses 50$ gift certificate to buy a pair of pajamas for 17.97, a necklace for 25.49, and 3 pairs of socks that each cost the

Gwar [14]

17.97 + 25.49 + 3x = 50.33
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(3)-2<br> Evaluate exponent

olga nikolaevna [1]

Answer:

$3^{-2} = \dfrac{1}{9}$

Step-by-step explanation:

Definition of negative exponent:

$a^{-n} = \dfrac{1}{a^n}$

In our case, a = 3 and -n = -2.

$3^{-2} = \dfrac{1}{3^2}$

Now we just evaluate the power in the denominator.

$3^{-2} = \dfrac{1}{3^2} = \dfrac{1}{9}$

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3 years ago