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Arturiano [62]
3 years ago
9

40÷1+3-(3×7)+7-5 solve

Mathematics
2 answers:
Sliva [168]3 years ago
7 0

Answer:

40÷1+3-(3×7)+7-5 = 24

Lelechka [254]3 years ago
7 0

here's the answer

hope it helps!

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A room can be cleaned in 2 hours if rob and Harry work together. Ron could clean it in 3 hours. How long can harry clean it?
tresset_1 [31]

Answer:

6 hours

Step-by-step explanation:

Let the total work be X

Combined speed: X/2

Ron's speed: X/3

Harry's speed: S

X/2 = X/3 + S

S = X/2 - X/3 = (3X - 2X)/6 = X/6

Harry's speed is X/6, so he'll take 6 hours

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3 years ago
Part A: What is the measure of line RV. <br>Part B: What is the measure of line PV​
Korvikt [17]

Answer:

RT=6.5

PV=7.3

Step-by-step explanation:

5 0
3 years ago
A random sample of adults were asked whether they prefer reading an e-book over a printed book. The survey resulted in a sample
djyliett [7]

Answer: (0.10\ ,\ 0.18)

Step-by-step explanation:

According to the empirical rule, the 95% confidence interval for the true population proportion is given by :-

(p'-2\sigma_{p'}\ ,\ p'+2\sigma_{p'})

Given : . The survey resulted in a sample proportion of p′=0.14, with a sampling standard deviation of σp′=0.02, who preferred reading an e-book.

Then, the 95% confidence interval for the true proportion of adults who prefer e-books will be :-

(0.14-2(0.02)\ ,\ 0.14+2(0.02))\\\\=(0.14-0.04\ ,\ 0.14+0.04)\\\\=(0.10\ ,\ 0.18)

Hence, the 95% confidence interval for the true proportion of adults who prefer e-books= (0.10\ ,\ 0.18)

8 0
3 years ago
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Illusion [34]

Answer:

hope it helps you .......

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3 years ago
Determine the slope of the line.
andrew11 [14]

Answer:

what line?

Step-by-step explanation:

4 0
3 years ago
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