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dsp73
3 years ago
14

What is the solution to the system of equations x-y=5 and 3x+7y=-5​

Mathematics
1 answer:
True [87]3 years ago
6 0

Answer:

Step-by-step explanation:

3(x-y)-3x-7y=3(5)-(-5)

3x-3y-3x-7y=15+5

-10y=20

y=-2, since x-y=5

x-(-2)=5

x+2=5

x=3

So the solution is the point (3,-2)

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A beach ball had a diameter of 10 inches what is the volume of air contained inside the beach ball use 3.14
TiliK225 [7]

Answer:

10 in=

3.14=

1,570 is the LCD

Step-by-step explanation:

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7 0
3 years ago
The ratio of children to teachers at preschool is 14:5. How many children are at the preschool if there are 30 teachers
elena55 [62]

If the ratio is 14 childen to every 5 teachers, and there are thirty teachers... there are 84 children. hope I could help!

6 0
2 years ago
Read 2 more answers
Hello please help me quick!
Ronch [10]

Answer:

Answer is A

Step-by-step explanation:

subtract 15 1/4 and 2 2/3

4 0
2 years ago
Match each of the trigonometric expressions below with the equivalent non-trigonometric function from the following list. Enter
andreev551 [17]

Answer:

Step-by-step explanation:

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It should be clear that

tan(sin^{-1} x/4) = x/\sqrt{16-x^{2} }

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6 0
3 years ago
Really need help on this!!
marin [14]

Answer:

Hey there!

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Let me know if this helps :)

4 0
3 years ago
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