3 years ago

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Mathematics

1 answer:

ValentinkaMS [17]3 years ago

6 0

1,200 30% of his monthly income so the 1,120 is the closest

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rjkz [21]

15, Yes: a^2 +b^2 = c^2
9^2+12^2= 225
The square root of 225 is 15, therefore x=15.
Answer to question is yes.

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3 years ago

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The number of students who attend a school could be divided among 10, 12, or 16 buses, such that each bus transports an equal nu

pshichka [43]

Answer:

LCM Of 10,12,16 = 240

Step-by-step explanation:

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2 years ago

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The height of an adult male is known to be normally distributed with mean of 175 cm and standard deviation of 6 cm. The 20th per

dusya [7]

Answer:

The height below which 20% of the persons lie equals 169.95 cm

Step-by-step explanation:

Given that

Mean height = 175 cm

Standard deviation = 6 cm

Hence for the given question we need to find the standard variate factor ( Z factor) corresponding to the 20% of the area under the standard normal distribution curve

Using the standard normal distribution tables we have Z factor corresponding to an area of 20% equals ( Z = -0.84166)

Thus we have

$Z=\frac{X-\bar{X }}{\sigma }\\\\\Rightarrow -0.84166=\frac{X-175}{6}\\\\\therefore X=-0.84166\times 6+175\\\\X=169.95cm$

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4 years ago

Question 2 Which fraction is greater and why? 1/51 or 1/52

zheka24 [161]

Answer: 1/51

Step-by-step explanation: 1/51 is cut into bigger pieces. Its like cutting 2 pizza's of the exact same size. If you cut one into 5 pieces and another one into 10. If you take a piece of pizza out of both pizza's then the one cut into 5 pieces would be a ligger size.

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3 years ago

Plz help mee I am stuck

Nataliya [291]

Answer:

Step-by-step explanation:

The answer is in the problem just figure it out with the numbers and plug it in

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3 years ago