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4 years ago

What happens if 0 is one of the coordinates?

Mathematics

2 answers:

Gnesinka [82]4 years ago

4 0

Answer:

Then it would be on a line

Step-by-step explanation:

aleksandrvk [35]4 years ago

3 0

Answer:

Its is just 0

Step-by-step explanation:

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You are designing a staircase to reach a second floor that is 113" above the ground floor of a building. The owner of the buildi

gtnhenbr [62]

Answer:

Step-by-step explanation:

total height, H = 113 inches

height of each stair case, h = 7.25 inches

Number of stair case, n = total height / height of each stair case

n = 113 / 7.25 = 15.6

7 0

3 years ago

What is the surface area of this triangular pyramid?

solniwko [45]

Answer:

Step-by-step explanation:

Hence, the surface area of a triangular pyramid is 140 square units.

3 0

3 years ago

Write an equation that has x=3 as a solution

Damm [24]

Answer:

(3x + 5)/2 = 7

Step-by-step explanation:

If you substitute 3 for x, you get the equation:

(3(3) + 5)/2 = 7

(9 + 5)/2 = 7

14/2 = 7

8 0

3 years ago

Read 2 more answers

Brewed decaffeinated coffee contains some caffeine. We want to estimate the amount of caffeine in 8 ounce cups of decaf coffee a

rusak2 [61]

Answer:

We would have to take a sample of 62 to achieve this result.

Step-by-step explanation:

Confidence level of 95%.

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

$\alpha = \frac{1 - 0.95}{2} = 0.025$

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 $1 - 0.025 = 0.975$ , so Z = 1.96.

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.

Assume that the standard deviation in the amount of caffeine in 8 ounces of decaf coffee is known to be 2 mg.

This means that $\sigma = 2$

If we wanted to estimate the true mean amount of caffeine in 8 ounce cups of decaf coffee to within /- 0.5 mg, how large a sample would we have to take to achieve this result?

We would need a sample of n.

n is found when $M = 0.5$ . So

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

$0.5 = 1.96\frac{2}{\sqrt{n}}$

$0.5\sqrt{n} = 2*1.96$

Dividing both sides by 0.5

$\sqrt{n} = 4*1.96$

$(\sqrt{n})^2 = (4*1.96)^2$

$n = 61.5$

Rounding up

We would have to take a sample of 62 to achieve this result.

8 0

3 years ago

frank and his family drove 6 hours every day during a road trip which graph best represents y the total of hours driven in x day

Marta_Voda [28]

Answer:Where is the graph?

Step-by-step explanation:

6 0

3 years ago