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4 years ago

What is the value of x in the equation -3x+19=2x+106

Mathematics

1 answer:

AlexFokin [52]4 years ago

5 0

Answer:

x = -87/5 or in decimal form -17.4

Step-by-step explanation:

HOPE IT HELPS!

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Rank the following in order from LEAST precise to MOST precise

FromTheMoon [43]

5.426, 8.43, 915, 21,000

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3 years ago

Solve for x7(x 2) (x 5)44O -16

babymother [125]

7(x + 2) = 6(x + 5)

7x + 14 = 6x + 30 |subtract 14 from both sides

7x = 6x + 16 |subtract 6x from both sides

x = 16

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3 years ago

The black graph is the graph of

bija089 [108]

Answer:

Who knows ask goku

Step-by-step explanation:

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3 years ago

Francis ran 2 1/2 miles in 7/12 of an hour. How many miles can francis run in one hour?

nevsk [136]

7/12 of 1 hour:

1 hour = 60 min.

7/12 * 60

7 * 5 = 35

Francis ran 2 1/2 miles in 35 min.

2 1/2 = 5/2

5/2 miles = 35 min

x miles = 60 min

(Cross Multiply)

5/2 * 60 = 35x

5 * 30 = 35x

150 / 35 = x

x = 30 / 7 = 4 2/7 miles

Francis ran 4 2/7 miles in one hour.

8 0

3 years ago

Read 2 more answers

Assume that adults have IQ scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equa

aleksley [76]

Answer: 0.5467

Step-by-step explanation:

We assume that the test scores for adults are normally distributed with

Mean : $\mu=100$

Standard deviation : $\sigma=20$

Sample size : = 50

Let x be the random variable that represents the IQ test scores for adults.

Z-score : $z=\dfrac{x-\mu}{\sigma}$

For x =85

$z=\dfrac{85-100}{20}\approx-0.75$

For x =115

$z=\dfrac{115-100}{20}\approx0.75$

By using standard normal distribution table , the probability the mean of the sample is between 95 and 105 :-

$P(85$

Hence, the probability that a randomly selected adult has an IQ between 85 and 115 =0.5467

7 0

3 years ago