3 years ago

Help me pls!!!!!!!!!!!!!!!!

Mathematics

1 answer:

Lesechka [4]3 years ago

6 0

Use Photomath it’s so much faster!<3

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75% OFF!<br> The sale price of a garden hose is $2. What was the original price?

nasty-shy [4]

8$ If the sale is 75% then it would be 8$ because 2x4 is 8 and 3/4 of the is 2.

8 0

2 years ago

Assume the time required to complete a product is normally distributed with a mean 3.2 hours and standard deviation .4 hours. Ho

Alex787 [66]

Answer: 3.712 hours or more

Step-by-step explanation:

Let X be the random variable that denotes the time required to complete a product.

X is normally distributed.

$X\sim N(\mu=3.2\text{ hours},\ \sigma=0.4\text{ hours} )$

Let x be the times it takes to complete a random unit in order to be in the top 10% (right tail) of the time distribution.

Then, $P(\dfrac{X-\mu}{\sigma}>\dfrac{x-\mu}{\sigma})=0.10$

$P(z>\dfrac{x-3.2}{\sigma})=0.10\ \ \ [z=\dfrac{x-\mu}{\sigma}]$

As, $P(z>1.28)=0.10$ [By z-table]

Then,

$\dfrac{x-3.2}{0.4}=1.28\\\\\Rightarrow\ x=0.4\times1.28+3.2\\\\\Rightarrow\ x=3.712$

So, it will take 3.712 hours or more to complete a random unit in order to be in the top 10% (right tail) of the time distribution.

3 0

3 years ago

If f(x) = -3x - 5 and g(x)= 4x - 2, find (f-g) (x).

Eddi Din [679]

Answer:

$-7x-3$

Step-by-step explanation:

$(f-g)(x)$ just means $f(x)-g(x)$ .

$-3x-5-(4x-2)\\-3x-5-4x+2\\-7x-3$

4 0

3 years ago

If two forces of 5 lb. and 8 lb. acting at the same point are equivalent to a single force of 10 lb. Find the angle between the

Alchen [17]

The force of 10 pounds is made up of the horizontal components of the 8 and 5 pound forces

8 cos 30 + 5 cos 52 = 10

so your answer is 30 degrees

7 0

3 years ago

The table below shows field goal statistics for three different kickers. Order the kickers by their field goal success rate from

nikklg [1K]

Answer:

Kicker C, kicker B, and then kicker A

Step-by-step explanation:

Just divide the field goals made by field goals attempted to get the success rate. A = 12 / 14 = 0.857 B = 15 / 18 = 0.83 C = 19 / 24 = 0.79

0.79 < 0.83 < 0.857

6 0

2 years ago

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