1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
asambeis [7]
3 years ago
5

As a water quality assurance employee for local Aqua America, Inc branch record a drop in water levels from 28 feet to 7 feet at

your reservoir. What is your percentage decrease?
Mathematics
2 answers:
Bad White [126]3 years ago
8 0
7 is 1/4 of 28, so 7 is 25% of 28.
The drop from 28 to 7 is a drop of 21.
21 is 3 times 7, so 21 is 3 times 25%.

Answer: It is a 75% decrease.
Veseljchak [2.6K]3 years ago
5 0

Answer:

Percentage decrease in the reservoir level is 75%.

Step-by-step explanation:

Initial level of the water in the reservoir was recorded = 28 feet

Level of water at the reservoir after the drop = 7 feet

Decrease in the water level = (28 - 7) = 21 feet

Now to calculate the percentage drop we will apply the formula,

Percentage change = \frac{\text{Net change}}{\text{Initial level}}\times 100

= \frac{21}{28}\times 100

= 75%

Percentage decrease in the reservoir level is 75%.

You might be interested in
Whats the volume of the cylinder? Round your answer to the nearest hundred the top is B the left side of the cylinder is 13cm th
Wittaler [7]

Answer:

The volume of the cylinder is 163.3 m³.

Step-by-step explanation:

Given that,

Height = 13 cm

Base = 4 cm

So, radius = 2 cm

We need to calculate the volume of the cylinder

Using formula of cylinder

V=\pi r^2h

Where, r = radius

h = height

Put the value into the formula

V=\pi\times(2)^2\times13

V=163.3\ cm^3

Hence, The volume of the cylinder is 163.3 cm³.

6 0
3 years ago
Do you know the answer
Arte-miy333 [17]

Answer:

y=2x+2

Step-by-step explanation:

The * stands for multiplication.

0*2+2=2

3*2+2=8

6*2+2=14

All of these statements are true, so this should be the correct answer.

4 0
2 years ago
Raquel has created a program for a robot. The robot travels 10 meters and stops. The program is designed for wheels that are 2.5
Grace [21]

Answer:

Raquel should adjust the number of rotations  to 115.81 rotations

Step-by-step explanation:

step 1

Find the circumference of the wheels that are 2.5 cm in diameter

The circumference is equal to

C=2\pi r

we have

r=2.5/2=1.25\ cm

assume

\pi =3.14

substitute

C=2(3.14) (1.25)

C=7.85\ cm

step 2

Find the number of rotations

Divide 10 meters by the circumference

10\ m=1,000\ cm

1,000/7.85=127.39\ rotations

step 3

For a diameter of 2.75 cm find how should she adjust the number of rotations so that the robot travels the same distance

Find the circumference of the wheels

The circumference is equal to

C=2\pi r

we have

r=2.75/2=1.375\ cm

assume

\pi =3.14

substitute

C=2(3.14) (1.375)

C=8.635\ cm

step 4

Find the number of rotations

Divide 10 meters by the circumference

10\ m=1,000\ cm

1,000/8.635=115.81\ rotations

3 0
3 years ago
What’s the answer? PLEASE ! NO LINKS. thanks !
Art [367]

Answer:

84 cm^{2}

Step-by-step explanation:

find the area of each shape and add them together

5 0
2 years ago
What is the length of the hypotenuse of a right triangle that has sides measuring 12 cm and 35 cm
Westkost [7]
The measurement is 37 cm
3 0
3 years ago
Read 2 more answers
Other questions:
  • What is 15/4 in a muxed number
    7·1 answer
  • Two numbers that are ten units from zero
    10·2 answers
  • Here's the problem:
    14·1 answer
  • is (x-2) a factor of f(x) = x^3 − 2x^2 + 2x + 3, use either remainder theorem or factor theorem to explain your reasoning
    14·1 answer
  • Mount Everest is 8,850m tall. Convert the height to kilometers.
    13·1 answer
  • The units pf the digits of a two digits numeral is 8 if the digits are reversed the new number is 18 greater than the oringal nu
    12·1 answer
  • Edwin has £300 in his saving account
    12·2 answers
  • An irrigation system (sprinkler) has a parabolic pattern. The height, in feet, of the spray of water is given by the equation h(
    7·2 answers
  • The 13-foot string is arranged into a rectangle. Let L denote the length of the rectangle,
    12·1 answer
  • I need the answer in the next 6 hours
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!