All categories

2 years ago

F(-1) f(x) = -3x2 + 2x - 7

Mathematics

1 answer:

egoroff_w [7]2 years ago

3 0

Answer:

$f(-1) = -12$

Step-by-step explanation:

Step 1: Set x to -1 and solve

$f(x) = -3x^2+2x-7$

$f(-1) = -3(-1)^2+2(-1) - 7$

$f(-1) = -3(1) - 2 - 7$

$f(-1) = -3 - 2 - 7$

$f(-1) = -12$

Answer: $f(-1) = -12$

You might be interested in

The slope of a line is 5 /7. What is the slope of any line that is perpendicular to that line?

Lady bird [3.3K]

Answer:

-7/5

Step-by-step explanation:

The slope of a perpendicular line is the "negative reciprocal" of the slope of the original line. so just switch the numbers and put the top number into a negative.

4 0

3 years ago

Please help ASAP please ASAP help ASAP please ASAP

Scilla [17]

Answer:

PV = 8 VT = 4√3

Step-by-step explanation:

Given

PT = 4

With reference angle 30°

perpendicular (p) = 4

hypotenuse (h) = ?

sin 30° = p/h

1/ 2 = 4 / h

cross multiply

h = 8

with reference angle 60°

perpendicular (p) = ?

hypotenuse (h) = 8

sin 60° = p/h

√3 / 2 = p / 8

Cross multiply

2p = √3 * 8

p = 4 √3

Hope it's correct and would be helpful :)❤

3 0

2 years ago

State the solution: 6x + 5 - x = 2(x -2) +3x + 7

zysi [14]

Answer:

No solution

Step-by-step explanation:

I did the math, trust me. Mark as brainliest please

3 0

2 years ago

Read 2 more answers

A boat costs $19,200 and decreases in value by 12% per year. How much will the boat be worth after 5 years?

zhannawk [14.2K]

If it decreases by 12 percent, you do 19,200x.12 which is 2,304. You subtract that from 19,200 which is 16,896. You multiply that by .12 which is 2,027.52 and subtract that from 16,896 which is 14,868.42. You do that three more times and there's your answer.

6 0

3 years ago

Read 2 more answers

1) 14 units2 2) 16 units2 3) 17 units2 4) 19 units2

horrorfan [7]

Answer:

<h2>4th option: 19 units2 </h2>

Step-by-step explanation:

<h3>The given figure can be divided as (i) upper rectangle, (ii) lower rectangle </h3>

Then,

(i) Breadth of upper rectangle = 2 units

Length of upper rectangle = 8 - 1 = 7 units

Therefore, 

Area of the upper rectangle = 7 × 2 = 14 units2

(ii) Breadth of lower rectangle = 1 unit

Length of lower rectangle = 5 units

Therefore, 

Area of the lower rectangle = 5 × 1 = 5 units2

Since,

Area of the figure is = Area of upper rectangle + Area of lower rectangle 

= 14 units2 + 5 units2

= 19 units2 (Ans) (4th option)

7 0

2 years ago