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Blizzard [7]
3 years ago
14

Help me on this plzzzz

Mathematics
2 answers:
AleksAgata [21]3 years ago
8 0
2x - 6 = x + 7
x = 13

2x - 6 = 2(13) - 6 = 20

QR = 2(20) = 40

answer C. 40
Blizzard [7]3 years ago
6 0
The Correct Answer Is A.

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What does 1.8e10 mean
shutvik [7]
It means 1.8 × 10 to the tenth power. the E is a ten are you working with scientific notation
5 0
3 years ago
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The distribution of heights of adult American men is approximately Normal with mean 69 inches and standard deviation 2.5 inches.
nalin [4]

Answer:

option C 13.5%

Step-by-step explanation:

As the heights of adults is normally distributed with mean=69 and standard deviation=2.5 so, the percent of men that are between 64 and 66.5 inches tall can be calculated as

P(64<X<66.5)=P[ (64-69)/2.5<(X-μ)/σ<(66.5-69)/2.5]

P(64<X<66.5)=P(-2<Z<-1)

P(64<X<66.5)=P(-2<Z<0)-P(-1<Z<0)

P(64<X<66.5)=0.4772-0.3413=0.1359

Thus, the percent of men are between 64 and 66.5 inches tall is 13.59%.

If we round the resultant quantity then it will be rounded to 13.6% but considering the given options, option C is most appropriate.

5 0
4 years ago
Distance between a(3,9) b(-10,4)​
stira [4]

Answer:

√194 i think

Step-by-step explanation:

5 0
3 years ago
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Lena [83]

Answer:

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Step-by-step explanation:

6 0
3 years ago
1. Mr. McClellan has a board game that requires the use of two 4-sided dice. According to his rules, you can only start the game
stealth61 [152]
(A)

1,4
1,3
1,2
1,1

2,1
2,2
2,3
2,4

3,1
3,2
3,3
3,4

4,1
4,2
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5,1
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6,4
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6,2
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(B)
3%

(C)
I'm not sure about the answer for C, Sorry. Hope this helps!
6 0
3 years ago
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