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bearhunter [10]
3 years ago
6

Why is it unimportant to have the same powers of 10 we multiplying and dividing in Scientific Notation

Mathematics
2 answers:
nikdorinn [45]3 years ago
6 0
We only need to worry about the exponents
Darina [25.2K]3 years ago
3 0
You only to worry about the exponents and that’s it
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A water tank is leaking such that for each of the next 5 hours, the amount of water in the tank will be 2 gallons less than at t
andre [41]

Answer:

C.  Linear decrease

Step-by-step explanation:

I can't really show a graph but I will try to explain

The water is leaking at a constant rate, meaning its not regaining it water (its only leaking). So if u were to graph this it would be a linear decrease

( That was a Terrible explanation but the answer is right lol)

7 0
3 years ago
1 substitute p=5, q=7, r = -2
lora16 [44]

1.

a.) 2q + 5r

2(7) + 5(-2)

14 - 10 = 4


b.) 3(p + 6) + q + r     Plug in the numbers

3(5 + 6) + 7 - 2   Solve inside the parentheses first

3(11) + 7 - 2

33 + 5 = 38


2.

a.) m(3m + 4n)

2(3(2) + 4(3))

2(6 + 12)

2(18) = 36


b.) n²(m + p²)

(3)²(2 + (-5)²)

9(2 + 25)

9(27) = 243


c.) 3m(8 + n) + n²

3(2) (8 + 3) + 3²

6(11) + 9

66 + 9 = 75

3 0
3 years ago
50% of a certain number is 39. What is the number?
Allushta [10]
Let that certain number be 'n'

50% (n) = 39

50% ⇒ 0.5

0.5 (n) = 39

Divide both sides by 0.5

0.5n = 39
 /0.5    /0.5

n = 78.

So that certain number is actually <em><u>78! :)</u></em>

CROSS CHECK:

50% of 78

0.5 × 78

= 39

Hope this helps! :)
 
8 0
3 years ago
Cost of a Shirt increased from $10 to $30.What is the percent change?
Alexeev081 [22]
200% bc it went up 2x as much as it cost before
4 0
3 years ago
Read 2 more answers
Ms. Turner drove 825 miles in March. She drove 3 times as many miles in March as she did in January. She drove 4 times as many m
navik [9.2K]
825/3 = 275 which is how many miles she drove in January.

275*4= 1100 which is how many miles she drove in February. 

Ms. Turner drove 1100 miles in February. 
4 0
3 years ago
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