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Setler [38]
3 years ago
12

7x-8y=11 8x-7y=7 solve using substitution

Mathematics
1 answer:
lord [1]3 years ago
5 0

Answer:

(x,y)=(37,31)

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A golf store purchases a set of clubs at a wholesale price of $250. Mr.Edmond learned that the clubs were marked up 200%. Is it
Luba_88 [7]

Answer: $750

Step-by-step explanation:

Hi, to answer this question, first we have to calculate the markup amount by multiplying the wholesale price of the clubs (250) by the percent increase in decimal form (divided by 100):

Mathematically speaking :

250 x (200/100) = $500 (percent increase amount)

Finally, we add the percent increase amount to the wholesale price to obtain the retail price:

250+500 =$750  

Feel free to ask for more if needed or if you did not understand something.

5 0
3 years ago
Half of circle is called a semicircle.a semicircle has a diameter of 30 inches.what is the area of the window to the nearest squ
Anna007 [38]

Answer:

A=353\ in^2

Step-by-step explanation:

<u><em>The question is</em></u>

A window is shaped like a semicircle with a diameter of 30 inches. What is the area of the window? Round to the nearest square inch

we know that

The area of semicircle is equal to

A=\frac{1}{2}\pi r^{2}

we have

r=30/2=15\ in ---> the radius is half the diameter

substitute

A=\frac{1}{2}\pi (15)^{2}

A=112.5\pi\ in^2

assume

\pi =3.14

A=112.5(3.14)=353,25\ in^2

Round to the nearest square inch

A=353\ in^2

3 0
3 years ago
Need help with questions 5 and 6
kirza4 [7]

Answer:


Step-by-step explanation:


7 0
3 years ago
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