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Over [174]
2 years ago
6

I need help w number 5 pls !!

Mathematics
1 answer:
OleMash [197]2 years ago
5 0

Answer:

<h2>122.5</h2>

Step-by-step explanation:

the parameter of B figure is

12+9+9+5

35

as we know the scale factor is 7/2

so the parameter of A figure is

35×7/2

122.5

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Simplify the expression (2y+1)-4y^2+2
Katena32 [7]

Answer:

-4y^2+2y+3

Step-by-step explanation:

(2y+1)-4y^2+2

2y+1-4y^2+2

-4y^2+2y+1+2

-4y^2+2y+3

5 0
2 years ago
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a researcher wishes to design a fully blocked experiment with groups of subjects representing every possible combination of 1 ex
lesantik [10]
You have 6 variables with 2 levels each. Thus 2*2*2*2*2*2 or 2^6 or 64. 
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3 years ago
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According to the empirical rule, 68% of 7-year-old children are between ___ inches and ___ inches tall.
AveGali [126]

Using the empirical rule 68% would fall within one standard deviation of the mean.

The standard deviation is given as 2 inches and the mean is 49 inches.

Since it is only one standard deviation find the lower number by subtracting the standard deviation from the mean and find the higher number by adding the standard deviation to the mean.

49 - 2 = 47

49 + 2 = 51


68% would be between 47 inches and 51 inches tall.

8 0
3 years ago
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Choose the letter for the best answer.
arlik [135]

Answer:C

Step-by-step explanation:

78-17.5*2 = 43 so C

8 0
2 years ago
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Activity: A flagpole has cracked 1.7 m from the ground and fallen over, as if hinged. The top of the flagpole hit the ground 3 m
Anastasy [175]

Answer:

Height of flagpole before it fell = 5.15 m

Step-by-step explanation:

Given:

Height of remain pole (p) = 1.7 m

Distance from base (b) = 3 m

Find:

Height of flagpole before it fell

Computation:

Using Pythagorean theorem

H = √ p² + b

Length of broken part = √ 1.7² + 3²

Length of broken part = √ 2.89 + 9

Length of broken part = √ 11.89

Length of broken part = 3.45 (Approx)

Height of flagpole before it fell = Length of broken part + Height of remain pole

Height of flagpole before it fell = 3.45 + 1.7

Height of flagpole before it fell = 5.15 m

8 0
3 years ago
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