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4 years ago

5 less than a number y is under 20.

Mathematics

1 answer:

klio [65]4 years ago

4 0

Answer:

y - 5 < 20

y < 25

Step-by-step explanation:

y - 5 < 20

y < 25

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The average customer waiting time at a fast food restaurant has been 7.5 minutes. The customer waiting time has a normal distrib

tatuchka [14]

Answer: C . $H_0:\mu\geq7.5$ and $H_a:\mu$

Step-by-step explanation:

Definition:

Null hypothesis $(H_0)$ is a statement about the population parameter according to the objective raised by the researcher . It contains '=' , '≤' and '≥' signs.

Alternative hypothesis $(H_a)$ is also a statement about the population parameter but against null hypothesis . It contains '≠' , '<' and '>' signs.

Let $\mu$ be the average customer waiting time for the population.

Given : The average customer waiting time at a fast food restaurant has been 7.5 minutes.

Objective of test : After using new system , the average customer waiting time is at least 7.5 or less than 7.5.

Then, the null and alternative hypothesis for this scenario will be :

$H_0:\mu\geq7.5$

$H_a:\mu$

4 0

4 years ago

Find the area of the parallelogram shown below.

ale4655 [162]

Answer:

<h2>120 square units </h2>

Step-by-step explanation:

Given, 

Base of the parallelogram = 10

Height of the parallelogram = 12

Therefore, 

Area of the parallelogram = base × height 

= 10 × 12

= 120

Hence,

Area of the parallelogram is 120 square units (Ans)

5 0

3 years ago

How can i get the answer to this

kicyunya [14]

I believe it would be 20/15

6 0

3 years ago

Read 2 more answers

If you know that the exact volume of a cylinder is 500 π cm3, how can you find the approximate volume, without knowing the heigh

grandymaker [24]

Answer:

The approximate volume is $1,570\ cm^{3}$

Step-by-step explanation:

we know that

The exact volume of the cylinder is

$V=500\pi \ cm^{3}$

To find the approximate volume of the cylinder, substitute the term $\pi$ by the approximate value of $3.14$ and then multiply

$V=500(3.14)=1,570\ cm^{3}$

6 0

3 years ago

Use the identity a^3+b^3=(a+b)^3−3ab(a+b) to determine the sum of the cubes of two numbers if the sum of the two numbers is 4 an

olga55 [171]

Your identity says ...

... sum of cubes = (sum)³ -3(product)(sum)

... = 4³ -3·1·4

... = 64 -12 = 52

_____

The two numbers are 2±√3, and the sum of their cubes is indeed 52.

3 0

3 years ago