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Luda [366]
3 years ago
13

How to draw a picture to show 9/7

Mathematics
1 answer:
Softa [21]3 years ago
3 0
9 LITTLE PIGS ARE IN THE PEN THEN THE FARMER KILLS 7 
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The Jenkins family and the Alexander family each used their sprinklers last summer. The water output rate for the Jenkins
garik1379 [7]

Answer:

Jenkins: 25 hours Alexanders: 20 hours

Step-by-step explanation:

To solve this problem we need to set up two equations. We know the rates of each sprinkler's output and how much total water was output. We know how many hours the sprinklers were on. We are looking for how long each sprinkler was used.

We can make a represent hours because we know the rate of sprinkler's output is per hour.

25a+40b=1425

a+b=45

Now to solve this system of equations we need to isolate a variable on one equation to plug into the other.

a+b=45

a=45-b

Now we can plug this in for a in the other equation.

25a+40b=1425

25(45-b)+40b=1425

Distribute 25 into the parenthesis.

1125-25b+40b=1425

1125+15b=1425

15b=300

b=20

Now we know that the Alexander family used their sprinklers for 20 hours. We can plug this back into the other equation to find b.

a+b=45

a+20=45

a=25

The Jenkins used the sprinklers for 25 hours, and the Alexanders used them for 20 hours.

3 0
3 years ago
a new car sells for $25,000. the value of the car decreases by 15% each year. what is the approximate value of the car 5 years a
noname [10]
Given:
Initial value = 25,000
depreciation = 15% per annum based on net book value

Net book value = 25,000 (1 - 0.15)^t

where t is the number of years

NBV = 25,000 (0.85)^5
NBV = 25,000 (0.4437)
NBV = 11,092.50

The approximate value of the car 5 years from date of purchase is 11,092.50
8 0
3 years ago
Read 2 more answers
Betty bought six bags of rice when a total of 30 pounds what is the rate of the number of bags to pounds
finlep [7]

Answer:

5 pounds per bag simplified from 30 pounds per 6 bags

Step-by-step explanation:

6 bags of rice is 30 pounds. This means 30 pounds per 6 bags which simplifies to 5 pounds per 1 bag.

3 0
4 years ago
Read 2 more answers
A teacher orders school supplies by the pound.
Svet_ta [14]

Answer: 10

Step-by-step explanation:

I did the math, also not to be rude but stop using so many 'enter' commands

3 0
3 years ago
Can You Please Help Me With This​
nadezda [96]
The answer is “2/3”
Ye
4 0
4 years ago
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