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3 years ago

12) 8x - 2 = -9 + 7x Answer

Mathematics

1 answer:

kow [346]3 years ago

4 0

Answer:

-7

Step-by-step explanation:

8x - 2 = 7x - 9

8x - 2 - 7x = 7x - 9 - 7x

x - 2 = -9

x - 2 + 2 = -9 + 2

x = -7

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Answer:

PART A:

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A dataset is more consistent relative to another data set when the standard deviation is less than that of the other data set.

From the table, it can be seen that Team C has the least standard deviation.

Therefore, If the club wants to award the team that has the most consistent scoring among its team members, team C should be chosen.

PART B

The mean and the median is a measure of center of a data set.

The mean describes the average of a data set.

From the table, it can be seen that Team B has the highest average score.

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2 years ago

For the function F(x) = 2x^2-31x-51, where is the function increasing and positive? ( for all X values greater than what number

Ulleksa [173]

ANSWER
$x \: > \: 17$

EXPLANATION

The given function is

$f(x) = 2 {x}^{2} - 31x - 51$
Let us split the middle term to get,

$f(x) = 2 {x}^{2} -34x + 3x- 51$

We factor to obtain,

$f(x) = 2x(x - 17) -+3(x - 17)$

$f(x) = (2x -+3)(x -17)$

Let us find the zeros of f(x),

$(2x +3)(x - 17) = 0$

Either

$2x +3 = 0 \: or \: x - 17 = 0$
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We need to find the x-value of the vertex, which is the midpoint of the x-intercepts.

This gives us,

$\frac{- \frac{3}{2} + 17}{2} = 7.75$
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The function will be increasing and positive for
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3 years ago

Solve the system by elimination <br> x + 2y = -14 <br> x - y = 13

zimovet [89]

Answer:

1 {x+2y= -14

2{x-y=13

x+2y= -14

2x-2y= 26

3x= -14+26

3x/3= 12/3

x= 4

while x-y=13

4-y=13

-y= 13-4

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-y/-1=9/-1

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3 years ago

What is the slope of the line that passes through (-2,-3) and (1,1)

slavikrds [6]

Answer:

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Step-by-step explanation:

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m=(1--3)/(1--2)

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago