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telo118 [61]
3 years ago
15

I need these all written out on how they're done along with the answer please

Mathematics
1 answer:
taurus [48]3 years ago
8 0
Well, these are quite simple really, especially 1,2,3 and 4. If you read the questions carefully, you can understand it well. You don’t need to know the answer, you just need to understand
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A mechanic charged $220.28 to repair a car. The price included charges for 3 hours of labor and $126.53 for parts. How much does
jasenka [17]
Lets x is the labor charges per hour
3x + 126.53 = 220.28

3x = 220.28 - 126.53
3x = 93.75
x = 93.75  /  3
x = 31.25

answer:  $31.25 per hour charged for labor
6 0
3 years ago
Read 2 more answers
9x4 + 24x3 - 27x2 + 12x
serg [7]

Answer:

3x(3x³ + 8x² – 9x + 4)

Step-by-step explanation:

9x4 + 24x3 - 27x2 + 12x =

9x⁴ + 24x³ – 27x² + 12x =

3(3x⁴ + 24x³ – 27x² + 12x) =

3x(3x³ + 24x² – 27x + 12).

3x³ + 24x² – 27x + 12 cannot be factored

[rational numbers].

5 0
3 years ago
Describe two ways to write equivalent algebraic expressions
Zolol [24]

Answer:

See below.

Step-by-step explanation:

An example would be:

3x^2 + 6

and

3(x^2 + 2) .

The second way is found by dividing the first one by 3).

5 0
3 years ago
Tyler has 3 times as many books as Mai.
White raven [17]

Answer:

a. x divided by 3

Step-by-step explanation:

because if Tyler has 3 times more books than Mai, then Mai has 3 times fewer books than Tyler.

4 0
3 years ago
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What is 1.4% of b? What is 8% of x?
Nikolay [14]

Answer:

Step-by-step explanation:

1.4% of b = \frac{1.4}{100}*b = 0.014b

8% of x = \frac{8}{100}*x = 0.08x

4 0
3 years ago
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