All categories

2 years ago

If I have three crackers and I ate one how many crackers do I have now?

Mathematics

1 answer:

ivanzaharov [21]2 years ago

5 0

If you have three crackers and eat one the answer is C.2

You might be interested in

What is the vertex of the parabola y=2x2+20x-15? (5, 135) (-5, -165) (-5, -65)

maria [59]

Answer:

-296=2×2+20×-15that is the answer

Step-by-step explanation:

you need to calculate the equation step by step to get to the answer

5 0

3 years ago

Find the value of x. Part 1c

gtnhenbr [62]

Answer:

x=11

Step-by-step explanation:

Please see attached image.

4 0

4 years ago

Read 2 more answers

Graph y=-x+2 x-3y=-18

Levart [38]

I really dont know sorry

5 0

4 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

3 years ago

It would mean a lot to me if you helped with math, i really cant concentrate because my grandfather just passed away and yea ple

AysviL [449]

Answer:

The x intercept of the graph represents the distance that the water hits the ground. Since the x intercept is (42,0), the water hits the ground 42 ft away from its origin.

Step-by-step explanation:

Sorry to hear about your loss, stay strong and know that he is looking after you from a better place.

8 0

2 years ago