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3 years ago

GEOMETRY HELP PLEASE?!?!

Mathematics

2 answers:

frutty [35]3 years ago

7 0

B. F w and r
Collinear means when they lie on a line with the same slope (so a straight line)

erica [24]3 years ago

4 0

Collinear points are the set of points that lies on the same straight line. In the term collinear, co refers to togetherness and linear refers to line. So collinear refers to the points that hang on the same line together. The point that does not lie on the same line is called as non-collinear points.

Check all options:

A. Points R, D, and E do not lie on the same straight line, they are non-collinear points.

B. Points F, W, and R lie on the same straight line, they are collinear points.

C. Points Q, E, and T lie on the same straight line, they are collinear points.

D. Points W, E, and T do not lie on the same straight line, they are non-collinear points.

Answer: correct choice is B and C.

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The temperature in Lucy's refrigerator is 2.74 degrees celious.the temperature in the freezer section of her refrigerator is -19

irinina [24]

2.74 - (-19.4) = 22.14, so the freezer is 22.14°c colder. I hope that helps!

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3 years ago

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Find four consecutive integers such that the sum of the two largest subtracted from three times the sum of the two smallest is 7

serious [3.7K]

Answer:

18, 19, 20, 21

Step-by-step explanation:

Just like any of these problems, we should start by forming an equation for us to get a reference and plug in. We'll be using x as our variables.

As we have four consecutive integers (and not multiples) we can assume that the integers will be x, x+1, x+2, and x+3.

The sum of the two largest integers we have equals: n+2 + n+3 = 2n+5

and three times the sum of the two smallest = 3(n + n+1) = 6n+3

and the sum of t he two largest subtracted from three times the sum of the two smallest = (6n+3) - (2n+5) = 4n-2

4n-2=70

4n=68

n = 18.

n = 18, n+1 = 19, n+2 = 20, n+3 = 21

7 0

3 years ago

Solve for x in this equation.

arsen [322]

Answer:

Step-by-step explanation:

1. (x-10)+67=90 because it's a 90 degree angle

2.subtract 67: x-10=23

3. add 10: x=33

7 0

3 years ago

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Given the sample 4, −2, −6, 19, 6, add one more sample value that will neither change the mean nor the variance. Round to two de

DedPeter [7]

Answer:

Cannot create sample

Step-by-step explanation:

We are given the following in the question:

4, -2, -6, 19, 6

Formula:

$\text{Variance} = \displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{21}{5} = 4.2$

Sum of squares of differences = 0.04 + 38.44 + 104.04 + 219.04 + 3.24 = 364.8

$s^2 = \dfrac{364.8}{4}} = 91.2$

If we add an observation equal to the mean of given sample, then the mean and of new sample will not change.

New sample:

4, -2, -6, 19, 6, 4.2

$Mean =\displaystyle\frac{25.2}{6} = 4.2$

Sum of squares of differences = 0.04 + 38.44 + 104.04 + 219.04 + 3.24 + 0 = 364.8

$s^2 = \dfrac{364.8}{5}} = 72.96$

Thus, the variance of new sample changes.

Thus, it is not possible to create a sample.

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3 years ago

What is the time elaspsed between 11:00 and 2:15

hichkok12 [17]

From 11 am to 2:15 pm it is 3 hrs and 15 min

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3 years ago

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