MATHEMATICS HIGH SCHOOL

=Evaluate the function f(x) = –2x2 – 3x + 5 for the input value –3. −22
–4
2
32

Answers

Answer 1

Answer:

Evaluating the function,f(x) = –2x² – 3x + 5 for x = -3, we would have: f(-3) = -4. (option B).

How do you Evaluate a Function?

To evaluate a function, plug in the given value of the input (x) and simplify.

Thus:

f(x) = –2x² – 3x + 5

Substitute x = -3 into the function

f(-3) = –2(-3)² – 3(-3) + 5

f(-3) = -2(9) + 9 + 5

f(-3) = -4

Therefore, evaluating the function,f(x) = –2x² – 3x + 5 for x = -3, we would have: f(-3) = -4. (option B).

Learn more about evaluation of function on:

brainly.com/question/17385640

Answer 2

Answer:

Answer:

The correct answer is -4.

Step-by-step explanation:

have a good day yall

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What is the area of this triangle? And it's not 60, I already checked. PLEASE EXPLAIN!!!!

Answers

Answer:

A = 4 cm^2

Step-by-step explanation:

The area of a triangle is

A = 1/2 b*h

The base is 4 and the height is 2

A = 1/2 ( 4*2)

A = 1/2*8

A = 4 cm^2

Answer:

Step-by-step explanation:

A = BH/2

or Area = Base multiplied by Hieght divided by 2.

(b)4 x (h)2 = 8

8/2 = 4

Which of the following is closest to 27.8 x 9.6

Answers

You can round to estimate.
27.8 turns to 28
9.6 turns to 10
28*10=280

exactly what he said round up and then multiply it helps and will give you the most accurate answer

Shawn and Dorian rented bikes from two different rental shops. The prices in dollars, y, of renting bikes from the two different shops for x hours is shown. Shop Shawn used: y = 10 + 3.5x Shop Dorian used: y = 6x If Shawn and Dorian each rented bikes for the same number of hours and each paid the same price, how much did each pay for the rental?

Answers

You need to find the solution to the system of equations:

y = 10 + 3.5x
y = 6x

Then, both right sides are equal to each other:

6x = 10 +3.5x

6x - 3.5x = 10

2.5x = 10

x = 10/2.5 = 4

And:

y = 6(4) = 24.

Answer: They both rented the bikes for 4 hours and paid $ 24.

If you would like to know how much did each pay for the rental, you can calculate this using the following steps:

y = 10 + 3.5 * x
y = 6 * x
_____________
10 + 3.5 * x = 6 * x
10 = 6 * x - 3.5 * x
10 = 2.5 * x
x = 10 / 2.5
x = 4 hours

y = 6 * x = 6 * 4 = 24 dollars

y = 10 + 3.5 * x = 10 + 3.5 * 4 = 24 dollars

They both paid 24 dollars for 4 hours.

I'll give 100 pts and brainliest if you answer this!!!thank you for the help boo

Perform the operation. Write the answer in standard form.
1. (6 − i) + (9 + 5i)
2. (7 + 3i) + (11 + 2i)
3. (12 + 4i) − (2 − 15i)
4. (3 − 7i) − (3 + 5i)
5. 7 − (2 − 3i) + 6i
6. −16 + (3 + 4i) − 4i
7. 3i(6 − 5i)
8. −2i(8 + 2i)
9. (−5 + i)(8 − 6i)
10. (3 − 6i)(−1 + 7i)
11. (2 + 5i)(2 − 5i)
12. (−3 − i)(−3 + I)
13. (4 + i) 2
14. (5 − 9i) 2
Thank you again <3

Answers

Answer:

1. $4i+15$

2. $5i+18$

3. $-11i+10$

4. $-2i$

5. $9i+5$

6. $-13$

7. $-15i^(2)+18i$

8. $-4i^2-16i$

9. $-6i^2+38i-40$

10. $-42i^2+27i-3$

11. $-25i^2+4$

12. $-i^2+9$

13. $2i+8$

14. $-18i+10$

Step-by-step explanation:

Standard form means to put the terms in order based on their exponent (x³ -> x² -> x -> constant)

1. (6 - i) + (9 + 5i)

$4i+15$

2. (7 + 3i) + (11 + 2i)

$5i+18$

3. (12 + 4i) - (2 - 15i)

$-11i+10$

4. (3 - 7i) - (3 + 5i)

$-2i$

$35i^2+6i-9$

5. 7 - (2 - 3i) + 6i

$7 - 2 + 3i + 6i$

$9i+5$

6. -16 + (3 + 4i) - 4i

$-16 + 3 + 4i - 4i$

$-13$

7. 3i(6-5i)

$18i-15i^2$

$-15i^2+18i$

8. -2i(8+2i)

$-16i+-4i^2$

$-4i^2-16i$

9. (-5 + i)(8 - 6i)

$-40+30i+8i-6i^2$

$-6i^2+38i-40$

10. (3 - 6i)(-1 + 7i)

$-3+21i+6i-42i^2$

$42i^2+27i-3$

11. (2 + 5i)(2 - 5i)

$4-10i+10i-25i^(2)$

$-25i^2+4$

12. (-3 - i)(-3 + i)

$9 -3i + 3i -i^2$

$-i^2+9$

13. (4 + i) * 2

$2i+8$

14. (5 - 9i) * 2

$-18i+10$

:p when I first started answering this I thought the parentheses were being multiplied every time and did 100x more work .-.

Hope it helps <3 :D

How many pence in £3.05

Answers

£3.05

1£ = 100pence

£3.05 = 3.05*100 pence

= 305 pence.

In order to keep a boat from drifting away, the boat is tied to a pier with a 60-foot rope. When the boat drifts as far from the pier as the rope will allow, the rope forms a 15° angle relative to the horizontal water line.To the nearest foot, find the maximum horizontal distance, d, that the tied-up boat can drift from the pier.

Answers

A right triangle will be formed upon sketching the given scenario with the rope as the hypotenuse. So, using the cosine function:

cos 15 = d/60
d = 60 cos 15
d= 57.96 ft

Therefore, the maximum horizontal distance that the tied-up boat can drift from the pier is 58 ft.

Answer:

58 feet

Step-by-step explanation:

Just finished this lesson and checked the answer key.

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