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3 years ago

Too lazy to do homework someone do it for me and I’ll give brainliest

Mathematics

1 answer:

lana66690 [7]3 years ago

4 0

Answer:

1) D

3) B

4) F

6) G

Step-by-step explanation:

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Find the vertex of the function h(x) = x2 – 4x – 21

lakkis [162]

Answer: (2, -25)

Step-by-step explanation:

The x coordinate of the vertex is $x=-\frac{-4}{2(1)}=2$ .

When x=2, $h(2)=2^2 - 4(2)-21=-25$ .

So, the vertex is (2, -25).

7 0

2 years ago

What is the mean absolute deviation of the data set?

Ronch [10]

Answer:

the mean absolute deviation of the data set is 2.

Step-by-step explanation:

To calculate the mean absolute deviation of a data set, we need to follow the following steps:

Step 1: Calculate the mean.

Step 2: Calculate how far away each data point is from the mean (always keeping a possitive distance).

Step 3: Calculate the mean of the deviations.

Step 1: The mean of the data set is:

Mean = (12 + 10 + 10 + 8 + 6+ 7 + 7 + 12)/8 = 72/8 = 9

Step 2:

{12 -9, 10-9, 10-9, 9-8, 9-6, 9-7, 9-7, 12-9} = {3, 1, 1, 1, 3, 2, 2, 3}

Step 3: (3 + 1 + 1 + 1 + 3 + 2 + 2 + 3)/8 = 2

In conclusion, the mean absolute deviation of the data set is 2. Which corresponds to the option B.

5 0

3 years ago

PLS WILL GIVE BRIANLY!

Viefleur [7K]

Answer:

Jack has 10 left

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

(6x2 - 4x – 5) – (3x2 – 7x + 2)

galben [10]

Answer: 3x2 + 3x - 7

Step-by-step explanation: The first term is, 3x2 its coefficient is 3

The middle term is, +3x its coefficient is 3

The last term, the constant, is -7

1.Multiply the coefficient of the first term by the constant 3 times -7 = -21

2. Find two factors of -21 whose sum equals the coefficient of the middle term, which is 3

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3 years ago

Read 2 more answers

Which term describes a line segment that connects a vertex of a triangle to the midpoint of the opposite side? A. Angle bisector

Anettt [7]

<span>The term describes a line segment that connects a vertex of a triangle to the midpoint of the opposite side is :

C. Median
</span>

7 0

3 years ago