2 years ago

What are the answers to these?

Mathematics

1 answer:

vodka [1.7K]2 years ago

6 0

Answer:

(since u didnt give me more info im going to have to take a guess on what its asking)

3. f(-3)=-3f

4. f(-2)= -2f

5. f(0)= 0

6. f(5)= 5f

Step-by-step explanation:

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Of the following situations, which is best represented by the product 5x(-3)?

anygoal [31]

Answer:

=-5x

Step-by-step explanation:

Remove parentheses (-a)=-a

= -5x.3

hoped i helped :) can i get brainiest

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3 years ago

What is the following quotient? 35 3 12V5 o 40

Murrr4er [49]

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3 years ago

3. From the table below, find Prof. Xin expected value of lateness. (5 points) Lateness P(Lateness) On Time 4/5 1 Hour Late 1/10

wariber [46]

Answer:

The expected value of lateness $\frac{7}{20}$ hours.

Step-by-step explanation:

The probability distribution of lateness is as follows:

Lateness P (Lateness)

On Time 4/5

1 Hour Late 1/10

2 Hours Late 1/20

3 Hours Late 1/20

The formula of expected value of a random variable is:

$E(X)=\sum x\cdot P(X=x)$

Compute the expected value of lateness as follows:

$E(X)=\sum x\cdot P(X=x)$

$=(0\times \frac{4}{5})+(1\times \frac{1}{10})+(2\times \frac{1}{20})+(3\times \frac{1}{20})\\\\=0+\frac{1}{10}+\frac{1}{10}+\frac{3}{20}\\\\=\frac{2+2+3}{20}\\\\=\frac{7}{20}$

Thus, the expected value of lateness $\frac{7}{20}$ hours.

8 0

3 years ago

A box shaped like a cube has edges that are 7.5 inc

Jet001 [13]

A box of what????? I don't get it

7 0

3 years ago

What is the axis of symmetry for f(x) = 2x − 8x + 8? (1 point) Select one: a. x = −2 b. x = −3 c. x = 3 d. x = 2

ExtremeBDS [4]

Answer:

x=2

Step-by-step explanation:

F(x) = 2x^2 - 8x +8

Axis of symmetry lies at the x coordinate of vertex

To find x coordinate of vertex use formula

$x=\frac{-b}{2a}$

from the given f(x) , a= 2 and b = -8

Plug in all the values

$x=\frac{-(-8)}{2(2)}$

$x=\frac{8}{4}=2$

x=2

So the axis of symmetry at x=2

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3 years ago