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3 years ago

The vertices of the triangle in the diagram below are A(7,9), B(3,3), and C(11,3).

Mathematics

1 answer:

alex41 [277]3 years ago

4 0

Answer:

(7 , 5)

Step-by-step explanation:

Add all the x-axis then divide by 3

7 + 3 + 11 = 21

21/3 = 7

Add all the y-axis then divide by 3

9 + 3 + 3 = 15

15/3 = 5

So answer will be (7,5)

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Pleaseeeeeee I need helpppp

Dimas [21]

Answer:

I think it's 34

Step-by-step explanation:

cuz you add 11 and 12 frequency

6 0

3 years ago

Read 2 more answers

Simplify: -6(x + 4)

Bess [88]

Answer:

A) -10x - 24

Step-by-step explanation:

1. To simplify this expression, we apply the distributive property.

$(-6)(\frac{5}{3}x)+(-6)(4)$
$\frac{-30}{3}x-24$
$-10x - 24$

Therefore, the answer is A) -10x - 24.

4 0

3 years ago

Read 2 more answers

Reports on a student's ACT, SAT, or MCAT usually give the percentile as well as the actual score. The percentile is just the cum

Nimfa-mama [501]

Answer:

The percentile for William is 76.97.

Step-by-step explanation:

1) Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Let X the random variable that represent the scors of a population, and for this case we know the distribution for X is given by:

$X \sim N(25.2,6.5)$

Where $\mu=25.2$ and $\sigma=6.5$

2) Solution to the problem

We are interested in find the percentile for the score of 30 obtained by William. The best way to solve this problem is using the z score formula given by:

$z=\frac{X-\mu}{\sigma}$

And z follows a normal standard distribution. We can find the z scor for the score X=30 like this:

$z=\frac{30-25.2}{6.5}=0.738$

And now we can find the probability using excel or a table, on this way:

$P(Z$

And that means the 76.97 percentile since we have on the left of the score of 30, 0.7697 of the area on the left and 0.2303 of the area on the right.

So then the percentile for William is 76.97.

6 0

3 years ago

Two planes start flying towards each other simultaneously from two different cities. The distance between the cities is 960 mile

ANTONII [103]

Answer:

257.5 mph

332.5 mph

Step-by-step explanation:

The initial distance between the two planes is 960 miles, while the final distance (after t=1.5 h) is 75 miles, so the total distance covered by the two planes in 1.5h is

$d=960-75=885$ miles

Calling v1 and v2 the velocities of the two planes, we have the following equations:

(1) $v_1 = v_2 + 75$ --> velocity of plane 1 exceeds velocity of plane 2 by 75 mph

(2) $v_1 t+ v_2 t=885$ --> the total distance covered by the two planes is 885 miles (t=1.5 h is the time, and the products v1 t and v2 t represent the distance covered by each plane)