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zaharov [31]
3 years ago
11

The expression 7d gives the number of days in d weeks . Evaluate 7d for d=12. How many days are in 12 weeks?

Mathematics
2 answers:
e-lub [12.9K]3 years ago
4 0

Answer:

84

Step-by-step explanation:

RSB [31]3 years ago
3 0

Answer:

84 days are in 12 weeks

Step-by-step explanation:

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Can someone help me pls
Wittaler [7]

Answer:

3 cm

Step-by-step explanation:

  • V_{cylinder} = 189\pi \: cm^3 (Given)

  • h_{cylinder} = 21\: cm (Given)

  • Formula for V_{cylinder} is given as:

  • V_{cylinder} = \pi r^2h

  • \implies  189\pi = \pi r^2(21)

  • \implies \frac{ 189\pi}{21\pi} = r^2

  • \implies 9 = r^2

  • \implies \pm\sqrt 9 = r

  • \implies \pm 3 = r

  • Length of radius can not negative

  • \implies r = 3 \: cm

Hope it helps you in your learning process.

8 0
2 years ago
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Luke earns $50 for doing his chores each month. He washes cars in his neighborhood for $15 each. Last month he earned a total of
Furkat [3]

Answer:

He washed 4 cars.

Step-by-step explanation:

1. The variable that was unknown x amount of cars washed.

2.The equation I used was 110-50=15x

3. To solve this you subtract the 50$ from 110$ you get sixty dollars you do that to take out what he earned for his allowance. Then your equation is 60=15x so you divide each side by 15 and when you do that x=4

8 0
3 years ago
Figure A is a scale image of Figure B.<br> whas the value of x?
spayn [35]
X = 30 because the ratio of 27/45 = .6 so 18/.6 is 30
6 0
2 years ago
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There are two students Mark and John.
jonny [76]

Answer:

35% and 525

Step-by-step explanation:

3 0
3 years ago
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There are already 1,200 gallons of water in a swimming pool. If water is filling the pool at a rate of 30 gallons per minute, wh
Alika [10]

Answer:

n = 30m + 1,200

Step-by-step explanation:

let n = gallons

m = minutes

There are 30 gallons per minute, so 30 is multiplied by the minutes, and because there are already 1,200 gallons of water, you add 1,200

4 0
3 years ago
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