2 years ago

Like always, I need help :(

Mathematics

1 answer:

denis23 [38]2 years ago

8 0

Answer:

The equation of the line is: x = 0

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Fractions what does 4/14 equals

LekaFEV [45]

Answer:

4/14 = 2/7

Step-by-step explanation:

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3 years ago

6. 6.91.8 is 20% of what amount ?

olga nikolaevna [1]

6. if the number is 91.8, your answer is 459
7. 50 percent
8. 85 percent

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4 years ago

180 miles in 3 hours, what's the unit rate?

Oliga [24]

Answer:

60 or 60:1

Step-by-step explanation:

You will have to divide 180 by 3 which is 60 or you can divide 160 / 3 = 60 & divide 3 / 3 = 1.

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3 years ago

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Which of these equations is correct? select all that apply

iragen [17]

A.Wrong its 2^8 as 2x4=8
B.wrong its 3^-10 and not its reciprocal
C.correct
D.correct
E.correct
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4 years ago

A study found that the average stopping distance of a school bus traveling 50 mph was 264 feet. a group of automotive engineers

lutik1710 [3]

Answer:

Step-by-step explanation:

Given that a study found that the average stopping distance of a school bus traveling 50 mph was 264 feet.

Sample taken showed the following results

$n=40\\\bar x =262.3 feet\\Std dev = \sigma= 3 ft$

Since population std deviation is known and sample size is large, z test can be used.

$H_0: \bar x=264\\H_a: \bar x$

(Left tailed test)

Mean difference = $264-262.3 = 1.7$

Std error = $\frac{\sigma}{\sqrt{n} } \\=\frac{3}{\sqrt{40} } \\=0.474$

Z = test statistic = mean diff/std error

= $\frac{1.7}{0.474} \\=3.584$

p value = 0.00017

Since p < alpha our 0.05 we reject null hypothesis

There is evidence to show that mean is less than 264 feet

(Assumptions:

Sample are randomly drawn

Sample represents the population

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3 years ago