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borishaifa [10]
3 years ago
10

Shawna can swim 3 laps in the pool in 7 minutes. At this rate, how long will it take her to swim 15 laps?

Mathematics
2 answers:
vovangra [49]3 years ago
4 0

Answer:

It would take her 35 min to swim 15 laps

Georgia [21]3 years ago
3 0

Answer:

35 minutes

Step-by-step explanation:

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Please help guys!!!!!!!!!!!!!!
hram777 [196]

Answer:

a) x = -10

b) x = 7

Step-by-step explanation:

a)

2(x + 3) = x - 4

2x + 6 = x - 4

2x - x = -4 - 6

x = -10

b)

4(5x - 2) = 2(9x + 3)

20x - 8 = 18x + 6

20x - 18x = 6 + 8

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x = 7

7 0
3 years ago
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KATRIN_1 [288]

Answer:

1: CD and BC

2: CE and AC

3: AE , AB , BD, DE

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Elodia [21]
Y: x-1 that is the answer. I think so.
5 0
3 years ago
the perimeter of am equilateral triangle is 7 inches more than perimeter of a square and the side of the triangle is 5 inches mo
Dmitry [639]

Let t be the side of the triangle and s be the side of the square.

Let P_t be the perimeter of the triangle and P_s be the perimeter of the square.

We have the following relationship:

\begin{cases}P_t = P_s+7\\t=s+5\\P_t = 3t\\P_s=4s\end{cases} \implies \begin{cases}3t=4s+7\\t=s+5\end{cases} \implies 3(s+5)=4s+7 \implies s=8

Which finally implies

t=s+5=13

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