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2 years ago

6

An object’s speed decreases by 6% for each minute that it is slowing down. What is the percent that it’s speed will decrease ove

r half an hour?

1 answer:

Zarrin [17]2 years ago

3 0

It says decreasing so you have to turn it into a percent (.06%) and then sub tract that from 1. After that you put that into an equation.

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john and jack found a coin on the sidewalk. they argued about whether the coin is fair. john claimed a 40% chance for the coin t

expeople1 [14]

Since it is observed that I z I = 3.464 > 1.96 it is concluded that the null hypothesis is rejected.

Therefore we reject John's claim.

Here:

we can use 1 sample proportion test to check the claim of John

H₀ : p₀ = 0.4

H₁ : p₀ ≠ 0.4

Test statistic is

z = p - p₀/√p₀(1-p₀)n

Let X be the random variable denoting the number of heads.

Now p = X/n

= 8/50

= 0.16

p₀ = 0.4

1-p₀ = 1-0.4

= 0.6

z = -3.464

since it is observed that I z I = 3.464 > 1.96 it is concluded that the null hypothesis is rejected.

Therefore we reject John's claim.

Learn more about Null hypothesis here:

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5 months ago

Find a measurement in centimeters of an object. Look through books, magazines, or the Internet. Then write the measurement as pa

ser-zykov [4K]

A book 2meters I found it so yea I concert and did a

That so that's your answer ya good now or nah ok good contact meh if u need help huh bye

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2 years ago

Read 2 more answers

Find the equations of a line through these 2 points

stiv31 [10]

answer is 2.2 66 88862 u88272

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2 years ago

Pyramid A is a square pyramid with a base side length of 7 inches and a height of 6 inches. Pyramid B has a volume of 3,136 in?.

anygoal [31]

Answer:

WE HAVE FIND HOW MUCH MAY TIME BIGGER IS THE VOLUME OF PYRAMID B THAN PYRAMID A.

The answer is 32 times

Step-by-step explanation:

Volume of Pyramid B = 3136 in³

Volume of Pyramid A = ?

We have to find volume of Pyramid A. As Pyramid is a square pyramid, its volume is given as:

$V=\frac{(b^2)(h)}{3}$

where b = base = 7 and h = height = 6. Substitute the values:

$V=\frac{7^2\cdot6}{3}\\V=98\\$

Volume of Pyramid A = 98 in³

To find how many time B is bigger than A, divide volume of B by A:

$\frac{3136}{98}=32$

So, volume of Pyramid B is 32 times bigger than volume of Pyramid A

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2 years ago

A retailer returned 2,124 defective items to the manufacturer and received a credit for the retail price of $0.66 or 66

gregori [183]

Answer:

the answer is 2279.35

Step-by-step explanation:

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2 years ago