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lys-0071 [83]
3 years ago
5

Aiutami con la mia matematica

Mathematics
1 answer:
KiRa [710]3 years ago
6 0
The first one is 37.5
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Marco earns $36.50 per hour show that the relationship between the amount he earns and the number of hours he works is proportio
Korolek [52]

To establish this equation we first need to assign some variables.

Let us assign x as the number of hours he has worked

and assign y as the total amount of money that he has earned

Therefore the equation y=36.50x is the equation that correctly represents how much money he makes regardless of how many hours he works.  Just plug in how many hours you want for x and then solve the equation and you will get how much money he makes in x amount of hours.  This is also proportional because for every hour that he works he gets the same salary of 36.50.  It is proportional because no matter how many hours he works the salary will go up the same amount for each extra hour he works.  The proportion is 36.50 dollars per hour worked.

3 0
3 years ago
A rectangle has length represented as (R +5) and width represented as (R + 2).
svetlana [45]

Answer:

4(R + 5 + R + 2) [Option B]

Step-by-step explanation:

<u>GIVEN :-</u>

  • Length = R + 5
  • Width = R + 2

<u>TO FIND :-</u>

  • Perimeter of the rectangle

<u>FORMULAE TO BE USED :-</u>

For a rectangle with length 'l' and width 'w' , its perimeter = 4(l + w)

<u>SOLUTION :-</u>

Perimeter = 4(R + 5 + R+2)

                 = 4(2R + 7)

                 = 8R + 14

7 0
2 years ago
Select the correct answer. What is the value of this expression when g= -3.5? 8-[2g-5]
Aleks [24]

Answer:

20

Step-by-step explanation:

2g =  -3.5x2 = -7

-7 - 5= -12

8 - -12=20

6 0
3 years ago
In 1989 a postage stamp cost $.25. In 1999 a postage stamp cost $.33. Find the average rate of
zalisa [80]

Answer:

0.33-0.25= 0.08

then 1999-1989= 10

lastly 0.008

Step-by-step explanation: so the  average rate of

change in postage in<em><u> cents</u></em> per year. is 0.8 of a cent. or 0.008 of a dollar.

7 0
2 years ago
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This is for my friend so if you could solve this asap that would be great
Yuliya22 [10]

Answer:

1. 5x^2 − 3x − 2

2. 4s^2 −28s + 49

3. 4y^2 + 9y + 8

8 0
3 years ago
Read 2 more answers
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