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vagabundo [1.1K]
3 years ago
6

Jacks average in math for the first nine weeks was an 88. His second nine weeks averange deceased to 81. What is the is the perc

ent of change from the first nine weeks to the second? Label increase or decrease
Mathematics
1 answer:
dolphi86 [110]3 years ago
5 0
It has to be decrease because from 88 to 81.


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Hi! Please help, I'd appreciate it!
Romashka-Z-Leto [24]

The volume of sphere is \frac{1372}{3}\pi feet cubed.

Step-by-step explanation:

Given,

Surface area of sphere = 196π square feet

Surface area of sphere = 4πr²

We will find radius of sphere.

4\pi r^2=196\pi

Dividing both sides by 4π

\frac{4\pi r^2}{4\pi}=\frac{196\pi}{4\pi}\\\\r^2=49

Taking square root on both sides

\sqrt{r^2}=\sqrt{49}\\r=7

The radius is 7 feet.

Volume of sphere = \frac{4}{3}\pi r^3

Volume=\frac{4}{3}\pi (7)^3\\\\Volume= \frac{4}{3}\pi *343\\\\Volume = \frac{1372}{3}\pi

The volume of sphere is \frac{1372}{3}\pi feet cubed.

Keywords: volume, surface area

Learn more about surface area at:

  • brainly.com/question/101683
  • brainly.com/question/103144

#LearnwithBrainly

3 0
3 years ago
a sprinkler that sprays water in a circular area can be adjusted to spray up to 30 feet. turning the radius-reduction screw on t
Zarrin [17]

Answer:

1590.4 square ft

Step-by-step explanation:

r=30 so you need to multiply that by 25% (30*.25=7.5)

30-7.5=22.5

A= pi(r)^2

A=pi*(22.5)^2

A=506.25pi

A=1590.43 or 1590.4 (to the nearest tenth)

4 0
3 years ago
Read 2 more answers
What is the answer to this math question
mezya [45]

Answer:

11

Step-by-step explanation:

1.80m + 0.6s = 12.00

[substitute the value of m into the equation]

1.80×(3) + 0.6s = 12

5.4 + 0.6s = 12

[make s the subject of the formula]

0.6s = 12 - 5.4

0.6s = 6.6

[divide both sides of the equation by 0.6]

0.6s / 0.6 = 6.6 / 0.6

s = 11

To prove that 11 is correct

[substitute the value of m and s into the equation]

1.80m + 0.6m = 12.00

1.80×(3) + 0.6×(11) = 12.00

5.4 + 6.6 = 12.00

12.00 = 12.00

8 0
2 years ago
A rectangular park is 5/6 miles wide and 1 5/7 miles long. What is the area of the park? Enter your answer as a mixed number in
bagirrra123 [75]

Answer:First we need to turn 1 5/7 into an improper fraction   7x1+5 = 12/7

12 / 7 x 5 / 6 = 60/42 ....reduced.....10/7

10/7 as a mixed number is 1 3/7

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Which expression is equivalent to 3 + 3/8 − 1/2 ?
andreyandreev [35.5K]

Answer:

2 and 7/8

Step-by-step explanation:

3 + 3/8 - 1/2

3 + 3/8 - 4/8

3 - 1/8

2 and 7/8

5 0
3 years ago
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