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expeople1 [14]
3 years ago
14

YALL PLEASE HELP IS IT ADDITION MULTIPLICATION OR SUB

Mathematics
1 answer:
alekssr [168]3 years ago
6 0

Answer:

6 x \frac{3}{4}= 4\frac{2}{4}

Step-by-step explanation:

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1.6*100/0.95=168%     1.6 to 0.95
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A random sample of 20 houses selected from a city showed that the mean size of these houses is 1880 square feet with a standard
azamat

Answer:

Option C

Step-by-step explanation:

Given that for a  random sample of 20 houses selected from a city showed that the mean size of these houses is 1880 square feet with a standard deviation of 320 square feet.

X, the sizes of houses is Normal

Hence sample mean will be normal with

Mean = 1880

and std dev = \frac{320}{\sqrt{20} } \\=71.5542

For 90% confidence interval critical value for t with degree of freedom 19 is

1.328

Confidence interval upper bound

= mean + margin of error

= 1880+1.328*71.55\\=1975

Option C is right

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3 years ago
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A pyramid has 7 faces
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2 years ago
In the figure shown below, AC is parallel to DE with transversal BF
densk [106]

Answer:

<h3>X = 142°</h3><h3>Y = 38° </h3>

<em><u>Given </u></em><em><u>-</u></em><em><u> </u></em> AC is parallel to DE

angle 3y + 28 = angle X ( Vertically opposite angles are equal).

3y + 28 = X

X + Y = 180° ( supplementary angles).

3y - X = (-28)

Solving both the equation we get

multiply eq 1 with 3

3x + 3y = 540

-X + 3y = (-28)

subtracting

4x = 568

x = 142°

3y + 28 = 142

3y = 142 - 28

3y = 114

y = 38°

4 0
2 years ago
Andrew measured the floor on his storage unit, which is rectangular. It is 4 meters wide and 5 meters from one corner to the opp
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Answer:

3

Step-by-step explanation:

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