3 years ago

I need helpppppp.....

Mathematics

1 answer:

Ulleksa [173]3 years ago

8 0

Answer:

Step-by-step explanation:

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What is -9+n/4=-7? Please explain in detail, I don’t really understand this at all.

Brrunno [24]

Answer:

n=-19

Step-by-step explanation:

-9+n/4=-7

Multiply 4 on both sides

-9+n=-28

Add 9 on both sides

n=-19

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2 years ago

Use an addition property to solve for c.

NeX [460]

Answer:

"C" =14

Step-by-step explanation:

14+(-12)=-12+c

-12+c=14+(-12)

-12+c=14-12

-12+c+12=2+12

c=14

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3 years ago

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Need help thanks in advanced

olga55 [171]

Answer:-1

Step-by-step explanation:

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2 years ago

Three times a number increased by 7 is 100. Find the number.

velikii [3]

Answer:

Step-by-step explanation:

100-7= 93

93÷3=31

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2 years ago

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The volume of a shampoo filled into a container is uniformly distributed between 370 and 385 milliliters. (a) What are the mean

Olenka [21]

Answer:

(a) mean = 377.5ml. standard deviation = 4.33

(b) 0.333

Step-by-step explanation:

(a)The mean:

$\mu = \frac{385 + 370}{2} = 377.5 ml$

The standard deviation:

$\sigma = \frac{385 - 370}{\sqrt{12}} = 4.33$

(b)

$P(x < 375) = \frac{375 - 370}{385 - 370} = \frac{1}{3} \approx 0.333$

(c)P(x > m) = 0.95

$\frac{m - 370}{385 - 370} = 0.95$

$m - 370 = 14.25$

$m = 384.25ml$

So the volumn of shampoo should be 384.25ml to exceed 95% of containers.

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3 years ago