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almond37 [142]
3 years ago
10

8.1 = 0.9a, how do you solve?

Mathematics
1 answer:
GrogVix [38]3 years ago
5 0

Answer:

a = 9

Step-by-step explanation:

Simplifying

8.1 = 0.9a

Solving

8.1 = 0.9a

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '-0.9a' to each side of the equation.

8.1 + -0.9a = 0.9a + -0.9a

Combine like terms: 0.9a + -0.9a = 0.0

8.1 + -0.9a = 0.0

Add '-8.1' to each side of the equation.

8.1 + -8.1 + -0.9a = 0.0 + -8.1

Combine like terms: 8.1 + -8.1 = 0.0

0.0 + -0.9a = 0.0 + -8.1

-0.9a = 0.0 + -8.1

Combine like terms: 0.0 + -8.1 = -8.1

-0.9a = -8.1

Divide each side by '-0.9'.

a = 9

Simplifying

a = 9

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8 0
3 years ago
Brennanhasalreadytaken17quizzesduringpastquarters,andheexpectstohave2quizzesduringeachweekofthisquarter.Howmanyweeksofschoolwill
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8 0
3 years ago
I have 14 Baseballs in 23 tennis balls and some boxes of baseballs with 12 baseball and I have the equal amount of boxes of tenn
katovenus [111]

Answer:

The answer is below

Step-by-step explanation:

I have 14 Baseballs in 23 tennis balls. I bought some boxes of baseballs with 12 baseball to a box and equal amount of boxes of tennis balls with 16 balls to a box. write an expression to represent the total number of balls

Solution:

Let n represent the number of boxes of each type.

Given, the number of boxes of tennis = number of boxes of baseball, hence:

n = number of boxes of tennis = number of boxes of baseball.

Already I have 14 baseball and I bought boxes of baseballs with 12 baseball to a box, therefore:

Number of baseballs = 14 + 12n

I have 23 tennis ball and I bought boxes of tennis balls with 16 baseball to a box, therefore:

Number of tennis balls = 23 + 16n

Total number of balls = number of baseballs + number of tennis balls

Total number of balls = (14 + 12n) + (23 + 16n) = 14 + 23 + 12n + 16n = 37 + 28n

Total number of balls = 37 + 28n

5 0
2 years ago
A photograph is 4 inches high and 5 inches wide. You need to scale it up so it is 10 inches high. How wide should it be?
IrinaK [193]

Answer: 12.5 in. high

Step-by-step explanation: to get from 4 to 10, you have to muliplty by 2.5.

if you multiply 5 by 2.5, the answer is 12.5

8 0
3 years ago
What expression is equivalent to 1/3(4-5x-1)?
Serhud [2]
1/3( 4 - 5x - 1)


= (1/3)(4 +  - 5x +   - 1)

= (1/3)( 4)  + (1/3)(- 5x)  + (1/3)( - 1)

= 4/3 +  - 5x/3 +  - 1/3

=   - 5x/3  + 1  (Decimal:   - 1.666667x + 1)





Hope that helps!!!!
3 0
2 years ago
Read 2 more answers
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