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2 years ago

What is 2y+z-3y please

Mathematics

2 answers:

Anton [14]2 years ago

3 0

Answer:

-1y + z

Step-by-step explanation:

2y + z - 3y [Given Expression]

-1y + z [Combine like-terms]

balu736 [363]2 years ago

3 0

Answer:

-y + z

Step-by-step explanation:

2y + z −3y = 2y + z + −3y = ( 2y + −3y ) + ( z ) = −y + z

I hope this helps you :D

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What is the average of 301,317,167 and 319

Artemon [7]

Answer:

150658743

Step-by-step explanation:

(301 317 167+319)÷2=150658743

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2 years ago

Round your answer to the nearest hundreth

Juliette [100K]

Answer:

Step-by-step explanation:

Area of a circle is found by using the equation:

$A = \pi r^{2}$

Radius = 1/2 (diameter) = 1/2 (16) = 8

So plug in:

$A = \pi (8)^{2}$

A = 64 $\pi$

A = 201.06193

Rounded A= 201. 06

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2 years ago

A college-entrance exam is designed so that scores are normally distributed with a mean of 500 and a standard deviation of 100.

yawa3891 [41]

Answer:

The probability is 0.003

Step-by-step explanation:

We know that the average $\mu$ is:

$\mu=500$

The standard deviation $\sigma$ is:

$\sigma=100$

The Z-score is:

$Z=\frac{x-\mu}{\sigma}$

We seek to find

$P(x800)$

For P(x>800) The Z-score is:

$Z=\frac{x-\mu}{\sigma}$

$Z=\frac{800-500}{100}$

$Z=3$

The score of Z = 3 means that 800 is 3 standard deviations from the mean. Then by the rule of the 8 parts of the normal curve, the area that satisfies the conficion of 3 deviations from the mean has percentage of 0.15%

$P(x>800)=0.15\%$

For P(x<200) The Z-score is:

$Z=\frac{x-\mu}{\sigma}$

$Z=\frac{200-500}{100}$

$Z=-3$

The score of Z = -3 means that 200 is 3 standard deviations from the mean. Then by the rule of the 8 parts of the normal curve, the area that satisfies the conficion of 3 deviations from the mean has percentage of 0.15%

$P(x$

Therefore

$P(x800)=P(x800)$

$P(x800)=0.0015 + 0.0015$

$P(x800)=0.003$

6 0

2 years ago

Out of 500 people in a room, 200 of them are wearing red shirts. Of the people wearing red shirts, 15% are wearing red pants. Wh

liberstina [14]

Number of people wearing red pants
= 200/100 x 15
= 30

Those who wear both red shirts and red pants is 30.

Therefore the percentage is
= 30/500 x 100%
= 6%

4 0

2 years ago

PLEASE HELP ME OUT!!!!!!!

Mariana [72]

Answer:

2nd one

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

What is 2y+z-3y please​

What is 2y+z-3y please