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asambeis [7]
3 years ago
8

A repairman charges $40.50 per hour. this can be written as $40.50x.evaluate this expression if he works for 5 hours.

Mathematics
2 answers:
sammy [17]3 years ago
7 0
I think the answers 3 if your lolking so see hkw much he earns in 5 houers
crimeas [40]3 years ago
3 0
To solve this equation, all you need to do is plug in the amount of hours the repairman works for x.  

So, when the repairman works for 5 hours, 40.50x=40.50(5).

When you multiply 40.50*5, you get 202.5.

When you convert this back to dollars and cents, your final answer is $202.50.

If the repairman works for 5 hours, then he will earn/charge $202.50.

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F almonds sell for $1.20 per pound, and walnuts sell for $.75 per pound, how many pounds of each must be used to make 45 pounds
lukranit [14]

Answer:

Option A.) 20 pounds of walnuts and 25 pounds of almonds is correct.

Step-by-step explanation:

i) let x be the the number of pounds of almonds

ii) let y be the number of pounds of walnuts

iii) therefore x + y = 45 pounds of the mixture

iv) 1.2x + 0.75y = 1.00 \times 45 = 45

v) Multipling equation in iv) by 4 we get

  4.8x + 3y = 180

vi) multiplying equation in iii) by 3 we get

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vii) subtracting equation vi) from equation v)  we get 1.8x = 45

ix) therefore we get x = 45/1.8 = 25 pounds of almonds

x) therefore 25 + y = 45  .... substituting value of x from ix) in iii) we get

   therefore y = 20 pounds of walnuts

Therefore option A.) 20 pounds of walnuts and 25 pounds of almonds is correct.

7 0
3 years ago
Kate wants to have $25,000 in 16 years. How much does she need to invest if the interest rate is 6 percent per year?
Diano4ka-milaya [45]
I'm guessing that its c
6 0
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Read 2 more answers
Seattle, wa and san francisco, ca lie on the same longitudinal line. san francisco is at 38° latitude and seattle is at 47° lati
Varvara68 [4.7K]

Step 1.

Calculate measure of angle α:

47^o-38^o=9^o

Step 2.

Calculate what fraction of the angle 360° ​​is the angle α:

\dfrac{9^o}{360^o}=\dfrac{1}{40}

Step 3.

Calculate the circumference of the Earth (circle):

C=2\pi r\to C=2\pi\cdot4000=8000\pi\ mi

Step 4.

The length of arc is equal 1/40 of the circumference:

\dfrac{1}{40}C=\dfrac{1}{40}\cdot8000\pi=200\pi\ mi

\pi\approx3.14\to\dfrac{1}{40}C\approx200\cdot3.14=628\ mi


<h3>Answer: A) 628 miles</h3>

8 0
3 years ago
Kaitlyn is walking on a treadmill at a constant pace for 28 minutes. She has programmed the treadmill for a 2-mile walk. The dis
maw [93]
Is this multiplying or what??? Anyways try calculating those numbers so basically you need to calculate 28x2 or if you have to divide them or multiply them you would get the answer is very simple
6 0
2 years ago
Mary was making $25,000 per year. Her boss gave her a $3,000 raise. What percent increase is that? PLZ HELP
Solnce55 [7]
The easiest way to find a percentage is to divide the two numbers. You're trying to find what percent 3,000 is of 25,000, so you divide 3,000 by 25,000 to find the decimal.
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12%
$3,000 is a 12% raise from $25,000.
7 0
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