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jeyben [28]
3 years ago
5

Write an indirect proof. Given: 5x+7≥52 Prove: x≥9

Mathematics
1 answer:
irga5000 [103]3 years ago
7 0
Subtract 7 both sides
52-7=45
45 divide 5x = 9
X greater than 9 or equal 9
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Can you please help me with 22.? (BE SERIOUS) (ITS DUE TOMORROW)
attashe74 [19]

pool has 45000 gallons.  It loses 780 gallons per hour, so the amount at any given time:

45000 - 780h, where h is the number of hours.

The chemical could be added once the amount of gallons in the pool hits 15000. So the equation to solve:

45000 - 780h = 15000

solve:

30000 = 780h

38.46 = h

It will take about 38.46 hours before chemical could be added.  It will not take longer than 2 days because 2 days is 48 hours, and we only need about 38 hours.

3 0
3 years ago
Can I get step by step help on numbers 52,54,60, and 64 please
Korolek [52]

Answer:

52: 8-Z

54: 18+X

60: 12.3

64: 2.5

52: 8 subtracted from z, the equation will only be 8-z because we do not know what z is.

54: 18 more than a number, we do not know what the number is so we will name it X, more than is adding, so the equation will look like this, 18+X

60: Since y is 6.7, all you have to do is subtract 19-6.7.

64: Since n is 7.5 just divide 7.5 from 3 and you will get 2.5.

7 0
3 years ago
A soap manufacturer advertises that it has increased the size of their bottle of dishwashing soap to 18.4 ounces, which is 5% mo
miskamm [114]

Based on the information given the original size of the bottle is 17.5 ounces.

Using this formula

Original size of the bottle =New bottle size / Percentage increase

Where:

New bottle size=18.4 ounces

Percentage increase=(1+0.05)=1.05

Let plug in the formula

Original size of the bottle=18.4/(1+0.05)

Original size of the bottle=18.4/1.05

Original size of the bottle=17.5 ounces

Inconclusion the original size of the bottle is 17.5 ounces.

Learn more about original size of the bottle here:brainly.com/question/25001466

7 0
2 years ago
0.242 to the nearest hundredth
11Alexandr11 [23.1K]
Two digits after the decimal point it the hundredths place
so we want to round to the place 4 is in
The number after 4 is 2, so we will round down
We will get 0.24
3 0
3 years ago
Graph (2,1) (2,4) (5,1)
dexar [7]

Answer:

Use a calculator for this like desmos graphing

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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