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2 years ago

Who ever gets this will get a brainlest

Mathematics

2 answers:

andrew11 [14]2 years ago

7 0

Here’s a picture of my work. The answer is 30 hope this helps :-)

Lorico [155]2 years ago

5 0

Answer:

i think 30

Step-by-step explanation:

area of a triangle is ½bh

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W=A/5 w equals a divided by five

Alex17521 [72]

Answer:

of solving for a A=5w

if solving for w W=A over 5

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2 years ago

Can someone pleaseeee help and if you’re correct i’ll give brainliest

OLEGan [10]

Answer:

can you copy and paste it on a question its kinda blurry for me

Step-by-step explanation:

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2 years ago

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Us Find the measure of 45. 45 = [?] 510

Alona [7]

46 degrees because the way that they line on it is set up cause it’s not 50 degrees or 40 degrees but it’s also close to a 50 degree angle than a 45

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2 years ago

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450 high school freshmen were randomly selected for a national survey. Among survey participants, the mean grade-point average (

umka21 [38]

Answer:

The margin of error is of 0.01.

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:

$\alpha = \frac{1 - 0.7}{2} = 0.15$

Now, we have to find z in the Z-table as such z has a p-value of $1 - \alpha$ .

That is z with a pvalue of $1 - 0.15 = 0.85$ , so Z = 1.037.

The margin of error is of:

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

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

Standard deviation was 0.21.

This means that $\sigma = 0.21$

Sample of 450:

This means that $n = 450$

What is the margin of error, assuming a 70% confidence level, to the nearest hundredth?

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

$M = 1.037\frac{0.21}{\sqrt{450}}$

$M = 0.01$

The margin of error is of 0.01.

4 0

3 years ago

(-4) + 8 = -10 + 12 9 +(-3) (+3) + (-3) 5 +(-2) (-18) + 9 25 + (-30)

Alex Ar [27]

Step-by-step explanation:

4
2
6
0
3
-9
-5

all these are the answers of your question

hope it is helpful to you

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2 years ago