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stellarik [79]
3 years ago
5

Last one can anyone help me plz​

Mathematics
1 answer:
meriva3 years ago
5 0

Answer:

  • (f - g)(x) = -x² + 2x +1

Step-by-step explanation:

Given

  • f(x) = 2x
  • g(x) = x² - 1
  • (f - g)(x) = ?

Solution

  • (f - g)(x) = 2x - (x² - 1) = 2x - x² + 1 = -x² + 2x +1
  • (f - g)(x) = -x² + 2x +1
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Line / is shown on the graph below. If another line is drawn, perpendicular to line I, what must be its slope?
juin [17]

Answer:

Undefined

Step-by-step explanation:

The slope on the graph is horizontal so there's no slope and the answer is just y = 3

For a line to be perpendicular to a horizontal line, it is going to be a vertical line.

All vertical lines have an undefined slope.

7 0
2 years ago
What is the slope of a line that is perpendicular to the
alexgriva [62]

Answer:

The slope of a line that is perpendicular to the line

shown in the graph is = 4

Hence, option 'd' is true.

Step-by-step explanation:

From the line equation, let us take two points

  • (0, 2)
  • (4, 1)

Finding the slope between two points

\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}

\left(x_1,\:y_1\right)=\left(0,\:2\right),\:\left(x_2,\:y_2\right)=\left(4,\:1\right)

m=\frac{1-2}{4-0}

m=-\frac{1}{4}

As we know that the slope of the perpendicular line is basically the negative reciprocal of the slope of the line, so

The slope of the perpendicular line will be:

-\frac{1}{-\frac{1}{4}}=4

Thus, the slope of a line that is perpendicular to the line

shown in the graph is = 4

Hence, option 'd' is true.

5 0
3 years ago
Claire Reagan and Anthony deliver newspapers in the neighborhoods clear deliver 79 papers a day Reagan delivers 2490 papers a mo
Nata [24]

Answer:

90,747

Step-by-step explanation:

Clair delivery=79 per day

Total delivery per year=79×365 days

=28,835

Reagan delivery=2490 per month

Total delivery per year=2490×12 months

=29,880

Anthony delivery= 616 per week

Total delivery per year =616×52 weeks

=32,032

Total delivery altogether in a year=28,835+29,880+32,032

=90,747

4 0
3 years ago
Read 2 more answers
A cone has radius 3.8 cm and height 7.6 cm. The radius and the height are doubled. Which of the following describes the effect o
TiliK225 [7]

Answer:

The volume is multiplied by 8.

Step-by-step explanation:

The volume of a cone with a radius of 3.8 and a height of 7.6 is 114.92. Now let’s double them, the results come out to be 919.39, we divide these by each other and we get roughly 8 when you round. Therefore, your answer is 8.

8 0
3 years ago
When 7 is subtracted from three times a certain number, the result is 28.<br> what is the number
OverLord2011 [107]

Answer: 35/3 or 11.6

Step-by-step explanation:

3x-7=28

Add 7 to each side

3x=35

Divide by 3

6 0
3 years ago
Read 2 more answers
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