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crimeas [40]
3 years ago
13

Mary spent $15. If this was 20% of her earrings, how much money did she earned?

Mathematics
1 answer:
Fed [463]3 years ago
4 0

Hi, I'm happy to help!

First off, we need to arrange an equation for what is being asked. 15 is 20% of her earnings and we don't know her total earnings.

15=20%×__

We can write this percentage as

15=0.2×__

We then change the equation to do the inverse operation, which is division, this makes it easier to solve.

15÷0.2=__

Now, we solve

15÷0.2=75

<u>She earned $75</u>

<u></u>

I hope this was helpful, keep learning! :D

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(10+-7 - -2) / (-2 - -1)
Scrat [10]

Nice use of brackets. We know exactly what you mean.

(10 - 7 + 2) / (-2 + 1) Notice that with an even number of - signs, you get a plus and with and odd number you get a minus.

(5) / (-1) = - 5 answer

Edit

Numerator

10 does not change.

+ - 7 Here a plus and a minus are put together. There is 1 minus sign which is an odd number of minus signs so the 7 is minus

- - 2 Here there are 2 minus signs. They become plus because 2 is even, and an even number of minuses become a plus so you have +2

10 - 7 + 2 = 5

Denominator

-2 does not change. It remains minus 2.

- - 1 There are 2 minus signs so this becomes plus 1.

- 2 + 1 = - 1

Numerator over denominator = 5/-1 = - 5. I'll probably run out of editing time. If you still don't understand, try and pinpoint the problem and we'll keep trying until you do see it. This question is worth it.

4 0
3 years ago
Read 2 more answers
Help me please and thank you
Anuta_ua [19.1K]
The slope is 3 y-intercept is 7 and the equation would be y=3x+7
5 0
3 years ago
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Find x, GH, and HI <br> .
ruslelena [56]
Given that GI = 53, and
• GH = 3x - 11
• HI = 2x + 4

We can establish the following equality statement to solve for x:

GH + HI = GI
3x - 11 + 2x + 4 = 53

Combine like terms:
5x - 7 = 53

Add 7 to both sides:
5x - 7 + 7 = 53 + 7
5x = 60

Divide both sides by 5 to solve for x:
5x/5 = 60/5

x = 12

Substitute the value of x into the equality statement to verify if it is the correct value for x:

GH + HI = GI
3x - 11 + 2x + 4 = 53

3(12) - 11 + 2(12) + 4 = 53
36 - 11 + 24 + 4 = 53
53 = 53 (True statement. Thus, x = 12 is the correct value).

Therefore:
GH = 3x - 11
GH = 3(12) - 11
GH = 25

HI = 2x + 4
HI = 2(12) + 4
HI = 28

Please mark my answers as the Brainliest, if you find this helpful. :)
6 0
2 years ago
A camel can drink 25 gallons of water in 10 minutes. How many cups of water can the camel drink in 10 minutes?
Alecsey [184]

Question:

A camel can drink 25 gallons of water in 10 minutes. How many cups of water can the camel drink in 10 minutes?​

Solution:

A)

1 cup = 0.25 quarts.

4 quarts= 1 gallon

Then, according to this information, we get the following table:

B)

Note that 4 quarts= 1 gallon, then 1 gallon is equivalent to 16 cups.

C)

Then, 25 gallons are equivalent to:

25\text{ gallons(}\frac{16\text{ cups}}{1\text{ gallon}}\text{)}=\text{ 400 cups}

D. According to the above information, we obtain that 25 gallons of water are 400 cups .

So that, we can conclude that the correct answer is:

The camel can drink 400 cups of water in 10 minutes

8 0
1 year ago
Identify the underlined place in 75.733. Then round the number to that place
Anettt [7]

Answer:

I'm sure it's The seven after the ( . )

Step-by-step explanation:

Find the number in the tenth place 7 and look one place to the right for the rounding digit 3 Round up if this number is greater than or equal to 5 and round down if it is less than 5 . So it's 75.7

4 0
3 years ago
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