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Simora [160]
3 years ago
6

Molly spent 1 hour and 30 minutes swimming 5 laps in the river. If it took her the same time to swim each lap, how long would it

take her to swim 7 laps?
Mathematics
1 answer:
-Dominant- [34]3 years ago
3 0

Answer:

126 minutes or 2 hours and 6 minutes

Step-by-step explanation:

Find how long it took her to swim one lap

1 hour and 30 minutes = 90 minutes

90/5 = 18

This means it took her 18 mins to swim each lap

18 · 7 = 126

It took her 126 minutes/2 hours and 6 minutes to swim 7 laps

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Find an equivalent expression for the missing side length of the rectangle. Then find the missing side when x=3.Round to the nea
SashulF [63]

Answer:

Base of rectangle = 23.25 units (Approx.)

Step-by-step explanation:

Given:

Diagonal of rectangle (Hypotenuse) = 8x

Height of rectangle (Perpendicular) = 2x

Find:

Base of rectangle

Computation:

Base = √Hypotenuse² - Perpendicular²

Base of rectangle = √(8x)² - (2x)²

Base of rectangle = √64x² - 4x²

Base of rectangle = √60x²

Base of rectangle = 7.75x units (Approx.)

If x = 3

Base of rectangle = 7.75x

Base of rectangle = 7.75(3)

Base of rectangle = 23.25 units (Approx.)

5 0
3 years ago
Read 2 more answers
If I buy a sweatshirt for $30, and the sales tax is 7% in my state, how much will I pay for the sweatshirt, including the sales
algol13

Answer:

$32.10

Step-by-step explanation:

If you have sales tax, you would first convert the percentage to decimal, or 0.07. Then you would take this number, and add it to one before you multiply it by the price of the sweatshirt. This makes sure that you're not just calculating the sales tax, but the overall price of the shirt. So if you multiply:

30 x 1.07 = 32.1

Add the units, and you get $32.10

Hope this helps!

6 0
3 years ago
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Find the length of each arc. Round to the nearest tenth.
allochka39001 [22]

Answer:

  5.5 units

Step-by-step explanation:

Arc length is given by ...

  s = rθ

  s = (3.5)(π/2) ≈ 5.5 . . . units

6 0
3 years ago
A 24-f0ot ladder rests against a house near a second story window 20 feet from the ground. Assume that the ladder
Marianna [84]

Answer:

c

Step-by-step explanation:

3 0
3 years ago
Simplify 9 − (−4). (1 point) a −13 b −5 c 5 d 13
Assoli18 [71]

Answer:

d 13

Step-by-step explanation:

Subtracting means adding the opposite.

To subtract -4, you add the opposite of -4 which is 4, so you add 4.

9 - (-4) = 9 + 4 = 13

Answer: d 13

7 0
3 years ago
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