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svetlana [45]
4 years ago
5

How to do substitution

Mathematics
1 answer:
oksian1 [2.3K]4 years ago
8 0
OK so for substitution you will be taking away so say you have 5 apples and someone eats 3 you now have 2 apples. so it would be 5 - 3 =2

I hope this helps
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A standard showerhead dispenses 21 gallons of water in 30 mins. At this rate, how many gallons of water will a standard showerhe
inysia [295]

Answer:

9.1 gallons of water.

Step-by-step explanation:

A standard showerhead dispenses 21 gallons of water in 30 mins. At this rate, how many gallons of water will a standard showerhead dispenses in 13 minutes?

30 minutes = 21 gallons

13 minutes = x gallons

Cross Multiply

30 minutes × x = 13 minutes × 21 gallons

x = 13 minutes × 21 gallons/30 minutes

x = 9.1 gallons of water

Therefore, a standard showerhead dispenses 9.1 gallons of water in 13 minutes.

7 0
3 years ago
The angle measures 22°, 62°, 118°, and 158° are written on slips of paper. You choose two slips of paper at random.
mylen [45]
Answer: 1/3

There are C(4,2) = 6 ways to choose a pair of numbers.  Only 2 of those pairs are supplementary measures {22, 158} and {62, 118}. The probability is 2/6 = 1/3.


3 0
3 years ago
Decrease $7500 by 7%<br>please help i need step by step explanation​
soldier1979 [14.2K]
(100% - 7%) × 7,500

= 93% × 7,500

= 93 ÷ 100 × 7,500

= 93 × 7,500 ÷ 100

= 697,500 ÷ 100

= 6975
hope this helped
6 0
3 years ago
Read 2 more answers
Can someone help me.
gtnhenbr [62]

Answer:

\large\boxed{x=\pm\sqrt{10}}

Step-by-step explanation:

x^2=10\Rightarrow x=\pm\sqrt{10}\\\\\text{because}\ (-\sqrt{10})^2=10\ \text{and}\ (\sqrt{10})^2=10.\\\\\text{used}\ (\sqrt{a})^2=a

5 0
4 years ago
What is 8.24 as a percent?
GenaCL600 [577]

Answer:

824% just move the decimal two place values?

Step-by-step explanation:

5 0
3 years ago
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