2 years ago

Work out the number of students at the school

Mathematics

1 answer:

horsena [70]2 years ago

5 0

Answer:

1240 students

Step-by-step explanation:

not sure but I'm pretty sure its right.

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Bryce and Rachel are collecting canned goods for the local food bank Bryce goal is to collect 32 items Rachel's goal is to colle

REY [17]

The faction is 3/4.
I got the answer by doing 24/32 = 0.75.
Then, I converted the decimal into a fraction. Which, is 3/4.
I hope this helps! :)

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3 years ago

For a left-tailed test, the critical value of z so that a hypothesis test would reject the null hypothesis at 1% significance le

mars1129 [50]

Answer:

C.-2.33

Step-by-step explanation:

We are given that

Significance level, $\alpha =1$ %=0.01

We have to find the critical value of z for a left-tailed test.

To find the critical value , we will use the z-table at significance level 0.01 for left-tailed test.

By using the z-table at significance level 0.01 for left-tailed test

The critical value of z at 1% significance level for left-tailed test

=-2.33

We get p-value by using z-critical value

P-value=0.0099<0.01

So, hypothesis test would be reject the null hypothesis at at 1% significance level.

Hence, the critical value of z=-2.33

Option C is true.

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2 years ago

The volume v of a gas kept at constant temperature varies inversely with the pressure p. If the pressure is 24 pounds per square

daser333 [38]

Answer:

$V=12\ ft^{3}$

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent an inverse variation if it can be expressed in the form $y*x=k$ or $y=k/x$

In this problem

$P*V=k$

step 1

Find the value of K

For $P=24\ psi ,V=15\ ft^{3}$

substitute

$24*15=k$

$k=360$

the equation is $P*V=360$

step 2

For $P=30\ psi ,V=\ ft^{3}$

substitute in the equation

$(30)*V=360$

$V=360/30=12\ ft^{3}$

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3 years ago

Sally is three times as old as an 8 years from now Sally will be twice as old as John how old is John

Kay [80]

Answer:

John is 12 years old.

Step-by-step explanation:

She is three times as old as an 8 years old.

8*3 = 24

Twice as old as John. John is half her age.

24/2 = 12

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2 years ago

I NEED HELP REALLY BAD PLEASE ANSWER THIS QUESTION AS SOON AS POSSIBLE!!!! Which of the following expressions represents the dis

Delvig [45]

A: 3/4 - 2.

Hope this helped!

8 0

3 years ago

Read 2 more answers