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SSSSS [86.1K]
2 years ago
6

What is equalvent to 7:15 A 21:45 b 14:45 c 3:5 d65:135

Mathematics
1 answer:
Ivanshal [37]2 years ago
5 0

Answer:

its a 21:45

Step-by-step explanation: it a because 7x3 will equal 21  you got 21 in there. 15 x 3 will equal 45 and you got 45 there so a is your answer.

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A horizontal line , such as y=4, has a slope of what
SpyIntel [72]

Answer:

0

Step-by-step explanation:

A horizontal line has a slope of zero and a vertical line has an undefined slope

5 0
2 years ago
PLEASE HELP ME OUT WITH MATH!
Helen [10]

Answer:

C

Step-by-step explanation:

If you multiply it out it looks like

7/1 times 1/8

multiply across (7 times 1 / 1 times 8)

gives you 7/8

7 0
2 years ago
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mr.wilson bought 4 tires for $390.60. If each tire cost $90 before tax was added. What tax rate did he pay on the tires?
elixir [45]
First  calculate after tax tire price 
$390.60 / 4 = $97.65  after tax price per tire 
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4 0
2 years ago
A survey was conducted to measure the height of men. In the survey, respondents were grouped by age. In the 20-29 group the grou
kotykmax [81]

Answer:

(a) The probability that his height is less than 66 inches is 0.2743.

(b) The probability that the height is between 66 and 71 inches is 0.4679.

(c) The probability that the height is more than 71 inches is 0.2578.

Step-by-step explanation:

The data given in the question is:

Mean (μ) = 68.4

Standard Deviation (σ) = 4

Let X denote the height of men. We will use the normal distribution z-score formula to calculate the z-score and then look up the probability in the normal probability distribution table. The z-score formula is:

z = (X - μ)/σ

(a) For P(X<66), first calculate the z value.

z = (66-68.4)/4

z = -0.6 (Look up this value in the standard normal distribution table)

P(z<-0.6) = 0.2743

The probability that his height is less than 66 inches is 0.2743.

(b) P(66<X<71)  = P(X<71) - P(X<66)

We need to find P(X<71) so, calculating the z-value:

z = (71-68.4)/4

z = 0.65

P(z<0.65) = 0.7422

P(66<X<71)  = 0.7422 - 0.2743

P(66<X<71)  = 0.4679

The probability that the height is between 66 and 71 inches is 0.4679.

(c) To find the probability P(X>71), we need to find P(X<71) and then subtract it from 1 because the normal distribution table gives values for P(X<k). We have already calculated the value of P(X<71) in part (b) so,

P(X>71) = 1 - P(X<71)

            = 1 - 0.7422

P(X>71) = 0.2578

The probability that the height is more than 71 inches is 0.2578.

3 0
3 years ago
Someone please help me
Alex_Xolod [135]

Answer: Pretty sure it's A

Step-by-step explanation: If you find the square root of 282 you get 16.7

5 0
2 years ago
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