2 years ago

(x) 3 5 7 (y) 7 11 15 Find x, when y = 21

Mathematics

1 answer:

solniwko [45]2 years ago

3 0

Answer:

x = 10

Step-by-step explanation:

y = 2x + 1

21 = 2x + 1

21 - 1 = 2x

2x = 20

x = 10

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The ratio of the number of hours it takes the three pipes A, B and C to fill an olympic pool is 4:9:12. Answer each of the follo

Andru [333]

Answer:

your answer is 6 hours

Step-by-step explanation:

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hope it helps ^^

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2 years ago

Read 2 more answers

What is the equation of the circle with center (-6,7) that passes through the point (4,-2). A. (x+6)^2+(y-7)^2=181 B. (x-6)^2+(y

pychu [463]

The equation of a cricle passing through (h,h) and with radius r is
$(x-h)^2+(y-k)^2=r^2$
so

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$(x-(-6))^2+(y-7)^2=r^2$
$(x+6)^2+(y-7)^2=r^2$
subsitute (4,-2) to find r^2

$(4+6)^2+(-2-7)^2=r^2$
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$100+81=r^2$
$181=r^2$

so it is

$(x+6)^2+(y-7)^2=181$
A is the answer

3 0

2 years ago

How to solve #4 and #5

MArishka [77]

If SU bisects TSV, then TSU = USV
4y + 11 = 6y + 5
6y - 4y = 11 - 5 = 6
y = 6/2 = 3

Therefore, m<TSU = 4(3) + 11 = 12 + 11 = 23

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3 years ago

What’s the answer to finding out what 5x+2y=70?

inna [77]

Answer:

x=<u>-2y+70</u>

y=<u>-5x+70 </u>