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STALIN [3.7K]
3 years ago
11

1. 2.5x + 100 = 600 2. 10 = 2x - 4 3. 2x + 5 = 30

Mathematics
1 answer:
Katarina [22]3 years ago
7 0

Answer:

1) 200 2) 7 3) 12.5

Step-by-step explanation:

For god's sake, use a calculator

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Please help me thank you.
Alona [7]

Answer:

\large\boxed{1.\ (4)^{-3x^2}=\left(\dfrac{1}{4}\right)^{3x^2}}

\large\boxed{2.\ ab^{-3x}=a\left(\dfrac{1}{b}\right)^{3x}=a\left[\left(\dfrac{1}{b}\right)^3\right]^x}

Step-by-step explanation:

Use:\ a^{-n}=\left(\dfrac{1}{a}\right)^n\\------------\\\\(4)^{-3x^2}=\left[(4)^{-1}\right]^{3x^2}=\left(\dfrac{1}{4}\right)^{3x^2}

Use:\ a^{-n}=\left(\dfrac{1}{a}\right)^n\ and\ (a^n)^m=a^{nm}\\--------------------\\\\ab^{-3x}=a\cdot b^{-3x}=a\left[(b)^{-1}\right]^{3x}=a\left(\dfrac{1}{b}\right)^{3x}\\\\ab^{-3x}=a\left(\dfrac{1}{b}\right)^{3x}=a\left[\left(\dfrac{1}{b}\right)^3\right]^x

8 0
3 years ago
Find an angle measure that is supplementary to this angle 126 degrees
guajiro [1.7K]
Supplementary angles have measures that add up to 180 degrees.

x + 126 = 180

x = 54
3 0
3 years ago
Find 48.9% of 264.Round to the nearest hundredth
Evgesh-ka [11]

Step-by-step explanation:

Simply divide the percent by 100 and multiply by the number. For example, 48.9 /100 x 264 = 129.096 or 0.489 x 264 = 129.096

Rounded to nearest hundredth

= 129.10

3 0
2 years ago
Read 2 more answers
Can i get help on 2&4 please
Elena-2011 [213]

Answer: no it did not double

(this is for 2 only)

Step-by-step explanation: if it would have doubled the population would be 10,616,966



8 0
3 years ago
Read 2 more answers
Please! It's due in 20mins!
lesantik [10]
I think it’s y = 1x + 13.
8 0
3 years ago
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