Ask question

Ask question

All categories

2 years ago

5

Explain this to me thanks

1 answer:

Leokris [45]2 years ago

4 0

Well you see the first question says 9 5/8 - 3 3/8.The first step is too minus 9 and 3.Which that would be 6. next is 5-3 which would be 2.Next is 8 -8 which is 0. The answer then is 6 2/0.Second question is 6-2 which is 4.Next is 7-3 which is 4. then 8-8 which is 0.the answer to that is 4 4/0.Hope this helps! (;

You might be interested in

How many 1/2s are in 2

Delvig [45]

Answer:

4

Step-by-step explanation:

Easy

1/2+1/2=1 or 2/2

2/2+1/2= 3/2

3/2+1/2= 2

1/2*4=2

1/2+1/2+1/2+1/2=2

there are 4 halves in 2

Hope this helps

4 0

1 year ago

Express 315m/s into km/h (with the working)

NARA [144]

Answer:

315 m/s = 1134 km/h

Step-by-step explanation:

Multiply the speed value by 3.6

315 x 3.6 = 1134

8 0

2 years ago

The water works commission needs to know the mean household usage of water by the residents of a small town in gallons per day.

valina [46]

Answer:

A sample of 179 is needed.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1 - 0.85}{2} = 0.075$

Now, we have to find z in the Ztable as such z has a pvalue of $1 - \alpha$ .

That is z with a pvalue of $1 - 0.075 = 0.925$ , so Z = 1.44.

Now, find the margin of error M as such

$M = z\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

A previous study found that for an average family the variance is 1.69 gallon?

This means that $\sigma = \sqrt{1.69} = 1.3$

If they are using a 85% level of confidence, how large of a sample is required to estimate the mean usage of water?

A sample of n is needed, and n is found for M = 0.14. So

$M = z\frac{\sigma}{\sqrt{n}}$

$0.14 = 1.44\frac{1.3}{\sqrt{n}}$

$0.14\sqrt{n} = 1.44*1.3$

$\sqrt{n} = \frac{1.44*1.3}{0.14}$

$(\sqrt{n})^2 = (\frac{1.44*1.3}{0.14})^2$

$n = 178.8$

Rounding up

A sample of 179 is needed.

7 0

2 years ago

The volume of a cube is related to the area of s face by the formula v= a^3/2. What is the volume of a cube whose face has an ar

Sophie [7]

Answer:

1000 m³

Step-by-step explanation:

Put the number into the formula and do the arithmetic.

v = a^(3/2) = (100 m²)^(3/2) = (√100)³ m³ = 1000 m³

The volume is 1000 cubic meters.

4 0

2 years ago

Determine the least common multiple (LCM) of 48 and 16.<br>A. 16<br>B. 24<br>C. 36<br>D. 48

Marizza181 [45]

Answer:

16

since it's the least that can be divided by both

7 0

2 years ago

Read 2 more answers