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3 years ago

What number can replace N in the fraction n/4

Mathematics

2 answers:

Afina-wow [57]3 years ago

7 0

Answer:

the answer is 1

Step-by-step explanation:

myrzilka [38]3 years ago

5 0

Answer:

If you want to be technical, literally any number can replace the <em>n.</em>

3/4, 175,938/4, 0.000032/4

They all work but, 1/4 and 3/4 are probably the most common. (And the easiest)

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What are the zeros of f(x) = x2+x-20?

Zielflug [23.3K]

Answer:

The zeros are (-5,0) and (4,0)

Step-by-step explanation:

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3 years ago

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Find the area of the shaded region. Round your answer to the nearest tenth. PLZ HELP

Ksju [112]

Answer:

30.96 m²

Step-by-step explanation:

In white there are four parts of a circle, so we can split the 12 m in half to show the radius, and then solve to find the area of the full circle.

A = r²

a = (6)²

a = (36)

a = 113.04

Then you find the area of the whole box.

12 x 12 = 144

Then you subtract the area of the circle in white from the area of the whole box.

144 - 113.04 = 30.96 m²

So that’s the area of the shaded region.

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3 years ago

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mollys jump rope is 6 1/3 feet long. Gals jump rope 4 2/3 feet lo g. How much longer is Molly's jump rope?

Vlad1618 [11]

6 1/3- 4 2/3 =5 4/3- 4 2/3=1 2/3
You can't subtract fractions unless you have the same denominator.

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3 years ago

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A car travels 30 – miles in

hodyreva [135]

Answer:

45.3 miles/h

Hope this will help you

Step-by-step explanation:

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The life in hours of a 75-watt light bulb is known to be normally distributed with standard deviation σ = 25 hours. A random sam

irina [24]

Answer: a) (1008.34,1019.658) b) (1009.24,1018.76)

Step-by-step explanation:

Since we have given that

n = 75

mean = 1014 hours

Standard deviation = 25 hours

At 95% two sided , z = 1.96

So, confidence interval would be

$\bar{x}\pm z\dfrac{\sigma}{\sqrt{n}}\\\\=1014\pm 1.96\dfrac{25}{\sqrt{75}}\\\\=1014\pm 5.658\\\\=(1014-5.658,1014+5.658)\\\\=(1008.34,1019.658)$

(b) Construct a 95% lower confidence bound on the mean life.

z = 1.65

So, confidence interval would be

$\bar{x}\pm z\times \dfrac{\sigma}{\sqrt{n}}\\\\=1014\pm 1.65\times \dfrac{25}{\sqrt{75}}\\\\=1014\pm 4.76\\\\=(1014-4.76,1014+4.76)\\\\=(1009.24,1018.76)$

Hence, a) (1008.34,1019.658) b) (1009.24,1018.76)

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3 years ago