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4 years ago

If f(x) =2x3 - 1, then f(-3)=

Mathematics

2 answers:

Vadim26 [7]4 years ago

4 0

Answer:

f(-3)=-19

Step-by-step explanation:

-3 REPLACES THE x

MA_775_DIABLO [31]4 years ago

3 0

Answer:

Step-by-step explanation:

f(x) = 2x^3 - 1

if x = -3,

f(-3) = 2 × (-3)^3 - 1

= 2 × -27 - 1

= -54 -1

= -55

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An employer interviews 12 people for four openings at a company. Five of the 12 people are women. All 12 applicants are qualifie

MA_775_DIABLO [31]

Answer:

a) The employer can fill the four positions in 495 ways.

b) The employer can fill the four positions in 210 ways.

Step-by-step explanation:

The order is not important.

For example:

Selecting John, Laura, Mary and Tre'Davious is the same as selecting Laura, John, Mary and Tre'Davious.

So we use the combinations formula to solve this problem.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

(a) the selection is random

There are 12 people, and 4 are selected. So

$C_{12,4} = \frac{12!}{4!8!} = 495$

(b) exactly two selections are women?

There are 7 men and 5 women. We want to select 2 men and 2 women. So

$C_{7,2}*C_{5,2} = \frac{7!}{2!5!}*\frac{5!}{2!3!} = 210$

3 0

4 years ago

What was the net yardage the team had after those 4 plays ?

Sergeu [11.5K]

<h3>Answer: Choice A) -32</h3>

A loss of 8 yards is represented as -8

Multiply this by 4 to get -8*4 = -32

5 0

3 years ago

Read 2 more answers

I NEED HELP ASAP !<br><br><br> Which shows the list of numbers in order from least to greatest?

miskamm [114]

Answer:

the one you have selected is correct

Step-by-step explanation:

just remember when a number has absolute value bars around them it basically just makes it positive.

4 0

3 years ago

Graph points (- 4, - 1)(4, 3) . Write the equation of the line that passes through the points in slope-intercept form

Reika [66]

Answer:

y = 0.5x + 1

Step-by-step explanation:

4 up, 8 right

rise over run

slope = 4/8 or 1/2

y-int = 1

6 0

3 years ago

Identify the reflection rule on a coordinate plane that verifies that triangle A(-1,7), B(6,5), C(-2,2) and A'(-1,-7), B'(6,-5),

malfutka [58]

Answer:

Option B is correct.

The reflection rule is followed here is, $(x,y) \rightarrow (x, -y)$ .

Explanation:

Since, the triangle is reflected over the x-axis , then only y- coordinates will get changed but the x coordinates will remain the same.

$A(-1,7) \rightarrow A'(-1,-7)$

$B(6,5) \rightarrow B'(6,-5)$

$C(-2,2) \rightarrow C'(-2,-2)$

Therefore, the only reflection rule on the coordinate plane that verifies the triangle are congruent when reflected over x-axis is, $(x,y) \rightarrow (x, -y)$

3 0

4 years ago