3 years ago

If the points A(2, 1, 1), B(0 ,-1 ,4)& C(k ,3 ,-2) are colinear, then k=.....

Mathematics

1 answer:

Shkiper50 [21]3 years ago

5 0

D is the answer i beleive

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Consider the dot plot which shows the distribution of data collected on the amount of time Jason sleeps each night. Find the dif

Elina [12.6K]

Answer:

A) 0.2

Step-by-step explanation:

From least to greatest, the data points are

6, 6, 6, 7, 7, 7, 8, 8, 8, 9

To find the mean, we find the sum of the data points and divide by the number of data points, 10. The sum of the data points is

6+6+6+7+7+7+8+8+8+9 = 72

Dividing by 10, the mean is 72/10 = 7.2.

The median is the middle number in the set. This is 7.

The difference between the mean and the median is

7.2-7 = 0.2.

4 0

3 years ago

Katy is buying vases and mason jars for her flower arrangements. She needs to buy at least 7 containers, but she only has $72 to

Irina-Kira [14]

Answer:

3 Vases

4 Mason jars

Step-by-step explanation:

The vase costs $12 and the mason jar costs $8. She has $72 to spend. We know that she must at least buy 7 containers. Let vase be x₁ and mason jar x₂. We have two equations:

$x_1+x_2=7$

$72=12x_1+8x_2$

WE can solve the value by substitution:

$x_1=7-x_2$

$72=12(7-x_2)+8x_2$

$x_2=3$

Therefore:

$x_1=7-3=4$

4 0

3 years ago

(t^-4)^-9 t^2 A t^26 B t^-26 C t^38 D t ^-38

julsineya [31]

Answer:

Its c

Step-by-step explanation:

The relevant rules of exponents are

.. (t^a)^b = t^(a·b)

.. t^a·t^b = t^(a+b)

You have

.. (t^-4)^-9·t^2

.. = t^((-4)*(-9) +2)

.. = t^38 . . . . . . . . . . . selection C

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3 years ago

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Ali used the expressed 8+25×2-45 to find how many CDs he has. how many CDs dose he have

MatroZZZ [7]

Ali has 13 CD's

Here's how I got my answer:

Step 1: Simplify $25 * 2$ to 50. Which leaves us with $8 + 50 - 45$

Step 2: Simplify $50 - 45$ to 5. Which leaves us with $8 + 5$ .

Step 3: Simplify $8 + 5$ , to get your answer, 13.

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3 years ago

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The number 18 is decreased to 16. What is the percentage by which the number was

Afina-wow [57]

Answer:

11.1

Step-by-step explanation:

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3 years ago

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