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3 years ago

PLEASE HELP!! I WILL GIVE BRAINLIEST!

Mathematics

1 answer:

deff fn [24]3 years ago

8 0

the answer is C)18 sorry if it was to late

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What is seventy-nine divided by twenty-five.

Elodia [21]

3.16 is the correct answer

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3 years ago

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A piece of string is 112 inches long. Isabel wants to cut it into 2 pieces so that one piece is three times as long as the other

sergey [27]

You have to divide 112 by 2 which is 56 then multiply it by three and you get 168

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3 years ago

Which graph shows the solution to the system of linear inequalities?

Vadim26 [7]

Answer:

Observe the attached image.

Step-by-step explanation:

We have the following linear inequalities

$y > \frac{2}{3}x + 3\\\\y \leq \frac{1}{3}x + 2$

Graph the lines corresponding to each inequality

$y > \frac{2}{3}x + 3$ → $y = \frac{2}{3}x + 3$

Cut with the y axis:

y = 3

Cut with the x axis:

$0 = \frac{2}{3}x + 3$

$-3 = \frac{2}{3}x$

$x = -4.5$

$y \leq \frac{1}{3}x + 2$ → $y = \frac{1}{3}x +2$

Cut with the y axis:

y = 2

Cut with the x axis:

$0 = \frac{1}{3}x + 2$

$-2 = \frac{1}{3}x$

$x = -6$

Now graph the two lines

For $y > \frac{2}{3}x + 3$

The region is made up of all the points that are above the line $y =\frac{2}{3}x + 3$

For $y \leq \frac{1}{3}x + 2$

The region is made up of all the points that are on the line and below $y = \frac{1}{3}x +2$

The final region will be the interception of both regions

Observe the attached image.

The system shown in the image you attached is:

$y > \frac{2}{3}x + 3\\\\y \leq -\frac{1}{3}x + 2$

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4 years ago

There are 224 gallons of water in 16 tanks. Find the number of gallons of water per tank

Alexus [3.1K]

Answer:

14 gallons

Step-by-step explanation:

224/16 = 14

8 0

3 years ago

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Suppose that IQ scores have a bell-shaped distribution with a mean of 95 and a standard deviation of 15. Using the empirical rul

professor190 [17]

Answer:

2.5% of IQ scores are no more than 65

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 95

Standard deviation = 15

Using the empirical rule, what percentage of IQ scores are no more than 65?

65 = 95 - 2*15

So 65 is two standard deviations below the mean.

By the Empirical Rule, 95% of the measures are within 2 standard deviation of the mean. Of those 5% which are not, 2.5% are more than 2 standard deviations above the mean and 2.5% are more than 2 standard deviations below the mean.

So 2.5% of IQ scores are no more than 65

3 0

3 years ago