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MAVERICK [17]
3 years ago
13

Simplify: 9^-3 Please help!

Mathematics
1 answer:
dalvyx [7]3 years ago
7 0

Answer:

Fraction form:       1/729

Decimal form:      0.00137174...

Exponent form:   3^-6

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when you reverse the digits in a certain two-diget number you increase it value by 27. What is the number if the sum of its digi
Fynjy0 [20]
The number is = 10x+y
if reverse the digits, the number is: 10y+x
The sum fo its digits is =  x+y=5
I suggest this system of equations:
(10y+x)-(10x+y)=27    ⇒9y-9x=27
x+y=5
We can solve this system of equations by equaliztion method
x=5-y

9y-9(5-y)=27
9y-45+9y=27
18y=27+45
18y=72
y=72/18
y=4

x=5-y
x=5-4=1

The number is: 10x+y=10(1)+4=14

Answer: the number is 14
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2 years ago
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Answer:

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Step-by-step explanation:

8 0
3 years ago
36=2+(-12.4)<br> please helpssss
Nikolay [14]
I believe the answer is 36= -10.4!
Sorry if I'm wrong though.
8 0
3 years ago
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. The temperature fell 13°c on each of the first 2 days of the week. It rose 7°c on each of
Rina8888 [55]

Answer:

The final temperature was 9 degrees.

Step-by-step explanation:

You can first multiply 13x2, 7x2, and 9x2. Then you subtract 26 and 18 from 34. then add 14

4 0
2 years ago
A=1/2h(a+b) solve for b
vovangra [49]

Answer:

b=2A/h-a

Step-by-step explanation:

A=1/2h(a+b)

a+b=A/(1/2h)

a+b=A/(h/2)

a+b=(A/1)(2/h)

a+b=2A/h

b=2A/h-a

3 0
3 years ago
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