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1 year ago

Simplify the expression

Mathematics

1 answer:

Nastasia [14]1 year ago

8 0

<u>Solution:</u>

Substitute the value of the variable into the expression, then simplify.

Answer: -8

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Hope this helps! If so, lmk! Thanks and good luck!

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A private jet flies the same distance in 10 hours that a commercial jet flies in 8 hours. If the speed of the commercial jet was

Vladimir [108]

Commercial jet's speed = 2x-162 (plug this in the equation below)

Private jet's speed = x

Equation:

10(x) = 8(2x-162)
10x = 16x - 1296
6x = 1296
x = 216 (Private jet's speed)

Take the first equation and plug x value in;
2x-162
2(216) - 162 = 270 ( Commercial jet's speed)

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2 years ago

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An architect’s blueprint for a new house shows the kitchen being 7 inches wide. If the scale used to create the blueprint is 0.5

Roman55 [17]

You would do 7x0.5 which equals 3.5 ft :^)

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2 years ago

Suppose the population of IQ scores in the town or city where you live is bell-shaped, with a mean of 104 and a standard deviati

SVEN [57.7K]

Answer:

The mean of samples of 100 IQ scores taken out from this population will have a distribution with mean M=104 and standard deviation s=3.5.

Step-by-step explanation:

We know the population mean and standard deviation, that has a bell-shaped distribution:

$\mu=104\\\\\sigma=35$

The sampling distribution, the distribution of the mean of samples of size n out of this population, will have the same mean as the population mean.

$\mu_M=\mu=104$

The standard deviation will be related to the population standard deviation and the sample size as:

$\sigma_M=\frac{\sigma}{\sqrt{N}} =\frac{35}{\sqrt{100}}=3.5$

Then, the mean of samples of 100 IQ scores taken out from this population will have a distribution with mean M=104 and standard deviation s=3.5.

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2 years ago

What is the answer to -7 =-5x+3

oee [108]

Answer:

-10=5x

Hope I Helped

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2 years ago

Say there are 2 candles per every 20 cakes. How many candles would there be for every 60 cakes?

abruzzese [7]

Answer:

There would be 6 candles.

Step-by-step explanation:

So you said that there would be 2 candles per 20 cakes, so I simplified it to 1 candle per 10 cakes. So, if there were 60 cakes, there would be 6 candles.

I hope it helped!

~Flipohrama

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2 years ago

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