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Nezavi [6.7K]
3 years ago
15

Two mechanics worked on a car. The first mechanic worked for 10 hours, and the second mechanic worked for 5 hours. Together they

charged a total of $775
. What was the rate charged per hour by each mechanic if the sum of the two rates was $100 per hour?
Mathematics
1 answer:
almond37 [142]3 years ago
5 0

Answer:

102 an hour

Step-by-step explanation:

all you do is add all of them together

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An astronomer's infrared telescope is able to detect radiation with a wavelength of 8.35x10-5 meters. Write this number in stand
alexgriva [62]

Answer:

unknown

Step-by-step explanation:

karma

3 0
3 years ago
Fractions,decimals,percents<br> 5/8=<br> 0.625%<br> 6.25%<br> 62.5%
stepan [7]

Hello!

First of all, let's divide.

5/8=0.625

Now, to convert into a percent, you multiply by 100.

0.625(100)=62.5

Therefore, our answer is D) 62.5%

I hope this helps!

4 0
3 years ago
3/4 x3/4 an exponential form
Kobotan [32]

3/4 times 3/4 is the same as 3/4 squared or (3/4)^2

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3 years ago
Find x if f(x) = 2x + 7 and f(x) = -1.<br> A.5<br> B.-4<br> C.-4
faltersainse [42]

Answer:

x = - 4

Step-by-step explanation:

Hi there !

 if f(x) = 2x + 7 and f(x) = -1 =>

2x + 7 = - 1

2x = - 1 - 7

2x = - 8

x = - 8 ÷ 2

x = - 4

Good luck !

5 0
3 years ago
Simplify by factoring. What are the excluded values? Choose all that apply.
makvit [3.9K]

Answer:

x = -2

x = 8

Step-by-step explanation:

Excluded values are the ones which make the denominator zero

3x² + x - 10

3x² + 6x - 5x - 10

3x(x + 2) - 5(x + 2)

(x + 2)(3x - 5)

x² - 6x - 16

x² - 8x + 2x - 16

x(x - 8) + 2(x - 8)

(x - 8)(x + 2)

[(x + 2)(3x - 5)] ÷ [(x - 8)(x + 2)]

(3x - 5)/(x - 8)

So excluded values are 8, -2

6 0
3 years ago
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