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lord [1]
3 years ago
6

If you double my number, then add 2, divide by 20 and add -1, the result is 0. What's my number?

Mathematics
2 answers:
Ulleksa [173]3 years ago
5 0

Answer:

9

Step-by-step explanation:

9 doubled is 18.

18 plus 2 is 20.

20 divided by 20 is 1.

1 plus -1 is 0.

Novay_Z [31]3 years ago
3 0

Answer:

77,464.4

Step-by-step explanation:

its right

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1) Suppose the heights of 18-year-old men are approximately normally distributed, with mean 71 inches and standard deviation 5 i
Luba_88 [7]

Answer:

Suppose the heights of 18-year-old men are approximately normally distributed, with mean 71 inches and standard deviation 4 inches.

(a) What is the probability that an 18-year-old man selected at random is between 70 and 72 inches tall? (Round your answer to four decimal places.)

z1 = (70-71)/4 = -0.25

z2 = (72-71/4 = 0.25

P(70<X<72) = p(-0.25<z<0.25) = 0.1974

Answer: 0.1974

(b) If a random sample of thirteen 18-year-old men is selected, what is the probability that the mean height x is between 70 and 72 inches? (Round your answer to four decimal places.)

z1 = (70-71)/(4/sqrt(13)) = -0.9014

z2 = (72-71/(4/sqrt(13)) = 0.9014

P(70<X<72) = p(-0.9014<z<0.9014) = 0.6326

Answer: 0.6326

please mark me the brainiest

3 0
2 years ago
Kato buys a recliner on Saturday. If the original price is 350 dollars, how much does he get off the original price?
strojnjashka [21]
I need more info to answer it
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3 years ago
In quadrilateral ABCD, m∢A = 80, m∢B = 2x, m∢C = x, and m∢D=4x. Find x.
valkas [14]

36 degree :

Step-by-step explanation:

if the value of angleA= x , angleB=2x , angle C=3x and angle D=4x . the value of x is 36 degree

3 0
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NEED HELP ASAP!
Bess [88]

Answer:

p ^ q

I promise you this is right but it's quite long to explain.

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