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professor190 [17]
3 years ago
7

What times 4 minus 2 divided by 30 equals 68

Mathematics
2 answers:
11111nata11111 [884]3 years ago
6 0
I have written it on the paper, hope this helps!

devlian [24]3 years ago
3 0

Answer:

510.5 or as a fraction, 1021/2

Step-by-step explanation:

4x-2/30 = 68

times both sides by 30 and you get

4x-2=2040

add two to both sides

4x = 2042

then divide both sides by 4 and you get

x=510.5

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A 3% salt solution weighing 100g represents 100g of water in which 3g of salt is dissolved (=3/10). What amount of salt would be
Nadya [2.5K]

Answer:

There would be 12 g of salt (12.3 g actually but rounded) and 88g of water (88.7 g actually but rounded)

Step-by-step explanation:

From the question, a 14% salt solution means 14g of salt in 100g of water.

What this means is that, the fraction of salt to water in the solution would be 14/100 which is same as 7/50

Now, we want to know the amount of salt and the amount of water in a 100g of 14% salt solution.

Looking at the ratio salt to water, we have 7 to 50

For every 50 parts of water, there are 7 parts of salt.

So the ratio of both is 7:50

For salt, the amount in grammes present will be ;

7/(50 + 7) * 100g = 7/57 * 100 = 12.3 g or 12g to the nearest whole number

The amount in grammes of water present will be ;

50/(50 + 7) * 100g = 50/57 * 100 = 87.7g or 88g to the nearest whole number

5 0
3 years ago
If there are two numbers on one side, do i have to add them together?
Rainbow [258]

Answer:

YES

Step-by-step explanation:

For example, in the figure displayed in the attachment, the length of YM = MS + SY

MS = 3

SY = 10

Therefore, YM = 3 + 10 = 13.

The lengths of segments MS and SY sums up to give you the length of YM.

7 0
4 years ago
To get ready for her first semester of school, Jayne spend a total of $7.92 for eight identical notebook what was the cost of ea
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0.99 cents each

Step-by-step explanation:

7.92 divided by 8= 0.99

Hope this helped

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<span>A. 
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3 years ago
study the diagram of circle K where JL and LM are tangent to circle K at points J and M respectively. Also JL=3x+10 and ML =7x-6
Verdich [7]

Answer:

22

Step-by-step explanation:

The answer is 22. You solve the equation 3x+10=7x-6 like so

3x+10=7x-6

-3     = -3

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   +6         +6

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You then plug in the value of x to the equation for LM.

7x-6 becomes 7*4-6 which is 22.

7 0
4 years ago
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