3 years ago

Please help me answer these 2 questions

1 answer:

4 0

The first one is not a question. Rather it is the parameters in which the second question exists.

2.

49.85%

This is because the likelihood of a point being within 2 SDs of the mean is 99.7%. This leaves .15 above and .15 below that curve. Given that we are looking from the mean (50%) and the upper limit with the exception of that .15, we would get the answer above.

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Sally has six more 34 cent stamps than 52 cent stamps. If her stamps amount to 11.50 how many of each stamp does she have?

Yuliya22 [10]

Let x be the number of 52 cent stamps that Sally has and let y be the number of 34 cent stamps that she has.

Then,

52x + 34y = 1150 --- (1)

Also, she has six more 34 cent stamps than 52 cent stamps.

Therefore, y = x + 6

(1) becomes

52x + 34(x + 6) = 1150

52x + 34x + 204 = 1150

86x + 204 = 1150

86x = 1150 - 204

86x = 946

x = 11

and y = 11 + 6 = 17

Hence, Sally has eleven 52 cent stamps and seventeen 34 cent stamps.

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bixtya [17]

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Step-by-step explanation:

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3 years ago

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Darya [45]

Answer:

x= 3.5

Step-by-step explanation:

5*2x= 10x

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35/10= 3.5

3.5= x

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3 years ago

3/12 ÷ 6/12 ????????????

Ahat [919]

Answer:

The answer is 0.5, or 1/2.

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3 years ago

Brainliest,plz help

labwork [276]

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