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kifflom [539]
3 years ago
10

Find the mean of the following data set: 8, 5, 7, 10, 15, 21

Mathematics
2 answers:
Digiron [165]3 years ago
8 0
D. 11

you add all of the number then divide by how many numbers there are.

8+5+7+10+15+21= 66

there are 6 numbers total

66/6=11
denis-greek [22]3 years ago
3 0
Mean: add A1+A2+A3+A4+……..+An then divide by 2 means 8+5+7+10+15+21=66/2=33
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Do the ratios 10:9 and 17:15 form a proportion?
KIM [24]

Answer:

Nope! these ratios do not form a proportion

Step-by-step explanation:

if you use a calculator to divide 10/9, you get 1.111 repeating.

if you use a calculator to divide 17/15, you get 1.133 repeating.

<em>since 1.111 does not equal 1.113, </em><em>these ratios are not proportional. </em>

8 0
3 years ago
Pls help. I’ve done a lot of googling and calculating but every answer I put is wrong
Anuta_ua [19.1K]

Answer:

5\sqrt{2}

Step-by-step explanation:

4 0
3 years ago
Ok the photo is bad but please help me because my mom is going to spank me if I don’t get a good grade and I need this assignmen
Tpy6a [65]

Answer:

The answer would be greater since its being multiply the answer will always be greater than what you're multiplying.

Step-by-step explanation:

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8 0
3 years ago
A private opinion poll is conducted for a politician to determine what proportion of the population favors adding more national
Ksju [112]

Answer:

n≅376

So sample size is 376.

Step-by-step explanation:

The formula we are going to use is:

n=pq(\frac{z_{\alpha/2}}{E})^{2}

where:

n is the sample size

p is the probability of favor

q is the probability of not in favor

E is the Margin of error

z is the distribution

α=1-0.98=0.02

α/2=0.01

From cumulative standard Normal Distribution

z_{\alpha/2}=2.326

p is taken 0.5 for least biased estimate, q=1-p=0.5

n=0.5*0.5(\frac{2.326}{0.06})^{2}\\n=375.71

n≅376

So sample size is 376

4 0
3 years ago
What is the equation of the horizontal line through (-4, 6)?
lbvjy [14]
The equation of a horizontal line is
y
=
c
for some constant
c
Since we are told that the line passes through
(
x
,
y
)
=
(
−
4
,
6
)
Then for at least one point on the line
y
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But for a horizontal line this value is a constant for all points on the line.
So the equation for all points on the line is
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6 0
3 years ago
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