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Eva8 [605]
3 years ago
14

Write an equation that you can use to find the value of x. Perimeter of square: 30 mm

Mathematics
1 answer:
xenn [34]3 years ago
8 0

Answer:

3x=30

Step-by-step explanation:

3x=30

3x/3=30/3

x=10

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I need help with this question
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Find the value of x.<br> 50
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x = 18 degrees

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A jet flies over the Air Force Base at 10:20 a.m. At 10:32 a.m., the plane passes over the Navy Base Station, 120 miles away. Ho
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So first calculate the time between the plane flied over the Air Force Bases (AFB) and Navy Base Station (NBS):
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3 0
3 years ago
2.) Bob has two weekend jobs. Last weekend he made a total of $77 after
Butoxors [25]

Answer:

Step-by-step explanation:

x= money earned per hour working as a cashier.

y=money earned per hour working delivering newspapers.

We propose the following system of equations:

5x + 4y =77

6x + 3y=78

We solve the system by reduction method:

-6*(5x+4y=77) ⇒  -30x-24y=-462

5*(6x+3y=78)⇒     30x+15y=390

                             ---------------------------

                                     -9y=-72  ⇒   y=-72 /-9=8

Now, we get the value of "x" replacing the value of "y" by "8" in any part of the equation above.

5x + 4(8)=77

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5x=77-32

5x=45

x=45/5=9

therefore;  

money earned per hour working as a cashier= $9/ hour

money earned per hour working delivering newspapers=$8/hour

7 0
3 years ago
Read 2 more answers
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