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3 years ago

What is the width of the terrace?

Mathematics

1 answer:

vlabodo [156]3 years ago

7 0

Answer:

12 feet or 4 feet.......

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Mark receives $2,200 a month in income. He wants to put 14% into a college savings account. How much money should he put into th

KiRa [710]

Answer:

308 dollars

Step-by-step explanation:

Really all we have to do, is find 14 percent of 2200. We can do this by dividing. Our resoulution is 308.

4 0

4 years ago

Read 2 more answers

A line goes through the points (8,9) and (-2,4).

vazorg [7]

<h3>Answer:</h3>

slope = 1/2
equation: y = 1/2x +5

<h3>Step-by-step explanation:</h3>

Slope

The slope of the line between two points (x1, y1) and (x2, y2) is ...

... m = (y2 -y1)/(x2 -x1)

For your given points, the slope is

... m = (4 -9)/(-2 -8) = -5/-10

... m = 1/2

Equation

The point-slope form of the equation for a line can be written ...

... y = m(x -h) +k . . . . for a line of slope m through point (h, k)

Using the first point given and the slope just calculated, the equation for the line can be written ...

... y = (1/2)(x -8) +9

... y = (1/2)x -4 +9 . . . . eliminate parentheses; next, collect terms

... y = 1/2x +5

8 0

4 years ago

6 times a number is 16 less than the square of that number. Find the negative solution.

MAVERICK [17]

-2 is the negative solution to the problem

5 0

4 years ago

1) The ages of trees in a forest are normally distributed with a mean of 25 years and a standard deviation of 5 years. Using the

8090 [49]

Answer:

1) 68%

2) 68%

Step-by-step explanation:

<h2>1) The ages of trees</h2>

We know the mean and the standard deviation.

The mean is:

$\mu=25$

The standard deviation is:

$\sigma=5$

The Z-score formula is:

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

For x=20 the Z-score is:

$Z_{20}=\frac{20-25}{5}=-1$

For x=30 the Z-score is:

$Z_{30}=\frac{30-25}{5}=1$

Then we look for the percentage of the data that is between $-1$ deviations from the mean.

According to the empirical rule 68% of the data is less than 1 standard deviations of the mean. This means that 68% of the trees are between 20 and 30 years old

<h2>2) Pizza delivery </h2>

First we calculate the Z-scores

We know the mean and the standard deviation.

The mean is:

$\mu=27$

The standard deviation is:

$\sigma=3$

The z-score formula is:

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

For x=24 the Z-score is:

$Z_{24}=\frac{24-27}{3}=-1$

For x=30 the Z-score is:

$Z_{30}=\frac{30-27}{3}=1$

Then we look for the percentage of the data that is between $-1$ deviations from the mean.

According to the empirical rule 68% of the data is less than 1 standard deviations of the mean. This means that 68% of pizzas are delivered between 24 and 30 minutes

8 0

3 years ago

Lucia is making invisibility potions. Each potion requires 2 eyes of newt. How many invisibility potions can Lucia make with 16

Oksana_A [137]

8.

16 eyes total / 2 eyes per potion = 8 potions

5 0

4 years ago

Read 2 more answers