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ExtremeBDS [4]
3 years ago
13

The area of a circular pool cover is 314 square feet. Write and solve an equation to find the diameter of the pool cover. Use 3.

14 for pie
Mathematics
1 answer:
nikitadnepr [17]3 years ago
4 0
The diameter of the pool cover in one hundred feet
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Which expression is equivalent to 32
Nadusha1986 [10]
2 times (9+7) is correct.

9 + 7 = 16.
16 multiplied by 2 is 32.
3 0
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Sandy had 219 football cards. She bought 57 more at a garage sale. How many did she have then?
8_murik_8 [283]
Therefore, Sandy has 276 football cards.
5 0
3 years ago
Read 2 more answers
A solution of the equation x^2/4=9 is
abruzzese [7]

Answer:

x = ±6

Step-by-step explanation:

x^2/4=9

Multiply by 4 on each side

x^2/4 *4=9*4

x^2 = 36

Take the square root of each side

sqrt(x^2) = ±sqrt(36)

x = ±6

5 0
3 years ago
Solve 34=j−12<br> .<br> j=<br> Find the value of j
Semenov [28]

Answer:

j=46

Step-by-step explanation:

34=j-12

add 12 to 34 to isolate j

the answer to that is 46

j=46

6 0
2 years ago
The picture shows the footprints of a man walking. The pace length P is the distance between the rear of two consecutive footpri
Rina8888 [55]

Bernard’s walking speed is 140 meters per minute

Bernard’s walking speed is 8.4 kilometers per hour

Step-by-step explanation:

The pace length P is the distance between the rear of two consecutive footprints

The formula, n P = 140, gives an approximate relationship between n and P where,

  • n = number of steps per minute
  • P = pace length in meters
  • Bernard knows his pace length is 0.80 meters
  • The formula applies to Bernard’s walking

We need to calculate Bernard’s walking speed in meters per minute and in kilometers per hour

∵ n = number of steps per minute

∴ n unit is number / minute

∵ P = pace length in meters

∴ P unit is meter

- That means n P unit is meters/minute

∴ n P represents the speed in meters per second

∵ The formula applies to Bernard’s walking

∵ His pace length is 0.80 meters

∵ n P = 140

∴ n(0.8) = 140

- Divide both sides by 0.8

∴ n = 175

- That means he moves 175 steps per minute

∵ The distance he walks in minute = 175 × 0.8 = 140 meters/minute

∴ His speed is 140 meters per minute

Bernard’s walking speed is 140 meters per minute

∵ 1 km = 1000 m

∵ 1 hour = 60 minutes

- Divide the meters by 1000 and the minute by 60 to change

   from meters per minute to kilometers per hour

∴ His walking speed = \frac{140}{1000} ÷ \frac{1}{60}

- Change ÷ to × and reciprocal the fraction after the division sign

∴ His walking speed =  \frac{140}{1000} × \frac{60}{1} = 8.4 km/h

Bernard’s walking speed is 8.4 kilometers per hour

Learn more:

You can learn more about the speed in brainly.com/question/5461619

#LearnwithBrainly

7 0
3 years ago
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