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Andrej [43]
3 years ago
10

HELP!!!

Mathematics
1 answer:
andreev551 [17]3 years ago
8 0

Answer: 59.98

Step-by-step explanation: :)

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Two mechanics worked on a car. The first mechanic worked for 15
nevsk [136]

Answer: For the sum of 130

First: $90

Second: $40

Step-by-step explanation:

We write equations for each part of this situation.

<u>The Total Charge</u>

Together they charged 1550. This means 1550 is made up of the first mechanics rate for 15 hours and the second's rate for 5 hours. Lets call the first's rate a, so he charges 15a. The second's let's call b. He charges 5b. We add them together 15a+5b=1550.

<u>The Sum of the Rates</u>

Since the first's rate is a and the second is b, we can write a+b=130 since their sum is 130.

We solve for a and b by substituting one equation into another. Solve for the variable. Then substitute the value into the equation to find the other variable.

For a+b=130, rearrange to b=130-a and substitute into 15a+5b=1550.

15a + 5 (130-a)=1550

15a+650-5a=1550

10a+650-650=1550-650

10a=900

a=$90 was charged by the first mechanic.

We substitute to find the second mechanic's rate.

90+b=130

90-90+b=130-90

b= $40 was charged by the second mechanic

5 0
3 years ago
Simplify (x+5)(x+5)(x+5)​
Deffense [45]
3x + 15 because u add all the x and then all real numbers
5 0
2 years ago
Read 2 more answers
(04.01)
katrin [286]
The third one, 2 to the power of 5 over 6

√2  * 3√2

convert from radical form to exponent form to solve for the same root
( x^m/n = n√x^m )

2^(1/2) * 2^(1/3)  
2^{3/6} * 2^{2/6} - find common denominator (6)
6√(2^3) * 6√(2^2)  - convert back to radical form 
6√(2^3 * 2^2)- combine

6<span>√(</span>2^5)
then convert to exponential form again
~ 2^5/6 ~

5 0
3 years ago
(x7) - 3 = 4
inn [45]

Answer:

detailed one

Please mark as the BRAINLIEST

(ㆁωㆁ)

7 0
3 years ago
The diameter of a circle is 15 in. Which measure below cannot be a chord on the same circle?
diamong [38]
It's c 18, because the diameter is the longest chord so it would be greater than 15.
6 0
3 years ago
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