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Stolb23 [73]
2 years ago
12

The height of the water in a tank decreases 3 inches each week due to evaporation and every two weeks a man adds 5 inches of wat

er into the tank. If the original height of the water in a tank is 75 in, what is the change in height of the water in a four-week period?
Pls solve ASAP!
Brainliest
Mathematics
2 answers:
atroni [7]2 years ago
7 0
75

Reduction of 12
3 x 4 = 12

Increase of 10
5 x 2 = 10

75 - 12 = 63
63 + 10 = 73

Change = 2 inches (75 - 73)
max2010maxim [7]2 years ago
3 0

Answer:

73 inches

Step-by-step explanation:

First you calculate the the change separately. The change for 4 weeks would be...

Evaporation: -3x4=-12  

Adding water (every 2 weeks): 5x2=10

Then you add -12 + 10 = -2. There is a -2 inches change during 4 weeks. Finally you subtract 75 -2 = 73 inches.

Your welcome!

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In a village the number of houses and the number of flats are in the ratio 9:5 the number of flats and the number of bungalows T
Makovka662 [10]

Answer:

Total no. of houses = 140

Step-by-step explanation:

Let there are 9x flats and 5x bungalows.

Total bungalows = 50

It means,

5x = 50

x = 10

No of flats = 9x

= 9(10)

= 90

Total houses = no. of flats + no. of bungalows

= 50+90

= 140

So, there are 140 houses in the village.

5 0
3 years ago
From 1960 to 1980 , the consumer price index (cpi) increased from 29.6 to 82.4. If a frozen chicken pie cost $0.28 in 1960 and t
mojhsa [17]

CPI in 1960 = 29.6

CPI in 1980 = 82.4

Growth (%) in CPI = \frac{\text{CPI in 1980 - CPI in 1960}}{\text{CPI in 1960}} × 100

⇒ Growth (%) in CPI = \frac{82.4-29.6}{29.6} × 100

⇒ Growth (%) in CPI = 178.3783.. %

⇒ Growth (%) in CPI = 178.4%

Now, we know that price of frozen chicken pie in 1960 = $0.28

Also, we know that over 1960 to 1980, frozen chicken pie price grew at the same rate as CPI

Hence, Price of Chicken Pie in 1980 = Price of Chicken Pie in 1960 × (1 + Growth in CPI)

⇒ Price of Chicken Pie in 1980 = 0.28 × (1 + 178.4%)

⇒ Price of Chicken Pie in 1980 = 0.28 + (0.28 × 178.4%)

⇒ Price of Chicken Pie in 1980 = 0.28 + 0.49952

⇒ Price of Chicken Pie in 1980 = 0.28 + 0.50

⇒ Price of Chicken Pie in 1980 = $0.78

Hence, price of chicken pie in 1980 would be ~$0.78

8 0
3 years ago
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How to get the volume of a answer
Eduardwww [97]
Mass* length * breadth
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3 years ago
Maria does weightlifting for 30 seconds and then aerobics for 60 seconds. She repeats this 10 times. If she does not take any br
VikaD [51]

Answer:

15 minutes

Step-by-step explanation:

3 0
3 years ago
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PQRS is a square. find the value of x and y.
Ivan

Answer:

x = 7

y = 3/2 or 1.5 (IF THE ANGLE IS 30 BY THE RATIOS OF A RIGHT TRIANGLE.)

hope it's right

Step-by-step explanation:

FOR X:

Let's solve your equation step-by-step.

4x+3=31

Step 1: Subtract 3 from both sides.

4x+3−3=31−3

4x=28

Step 2: Divide both sides by 4.

4x/4=28/4

x=7

FOR Y:

Step 1: Simplify both sides of the equation.

(3)(7)+6y=30

21+6y=30

6y+21=30

Step 2: Subtract 21 from both sides.

6y+21−21=30−21

6y=9

Step 3: Divide both sides by 6.

6y/6=9/6

y=3/2

3 0
3 years ago
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