3 years ago

Can someone please help me with this question. I will help you as well if you give me the answer.

Mathematics

1 answer:

Anestetic [448]3 years ago

3 0

Answer:

I think the answer is c

Step-by-step explanation:

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If the point (-5, -4) is reflected across the x-axis, what are the coordinates of the new point?

frez [133]

Answer:

(-5, 4)

Step-by-step explanation:

Recall that in a reflection across the x-axis the x coordinate stays the same, while the y coordinate flips its sign.

Therefore

(-5, -4) converts under reflection into (-5, 4)

4 0

3 years ago

8. Given the standard deviation of 16 for a population and a 95% confidence level, find the margin

Kazeer [188]

Answer:

4.0486

Step-by-step explanation:

The margin of error is calculated using $E=z_{\frac{\alpha}{2} }*\frac{\sigma}{\sqrt{n} }$

Where n=60 is the sample size and $\sigma=16$ is the population standard deviation.

The critical value corresponding to 95% confidence interval is $z_{\frac{\alpha}{2}}=1.96$

We substitute the values to obtain;

$E=1.96*\frac{16}{\sqrt{60} }$

$E=1.96*2.06559=4.0486$

3 0

3 years ago

I need to turn this into a decimal so hard

tangare [24]

First one: 0.21
Second one: 0.4

7 0

3 years ago

Read 2 more answers

Anna is a competitive runner. She wants to improve her performance and decides to keep track of data for six months to determine

Rom4ik [11]

Answer:

ummmmmm

Step-by-step explanation:

8 0

3 years ago

I have 3 more , thanks

V125BC [204]

3.606 is the answer
H^2 = P^2 + B^2
H^2 = 3^2 + 2^2
H^2 = 9+4
H^2 = 13
H = root 13
H = 3.606 (simple radical Form)

5 0

3 years ago