Mathematics High School

fx) = -3x² + 2x - 7, then f(-1) =​

Answers

Answer 1

Given:

The function is

[tex]f(x)=-3x^2+2x-7[/tex]

To find:

The value of f(-1).

Solution:

We have,

[tex]f(x)=-3x^2+2x-7[/tex]

Putting x=-1, we get

[tex]f(-1)=-3(-1)^2+2(-1)-7[/tex]

[tex]f(-1)=-3(1)-2-7[/tex]

[tex]f(-1)=-3-9[/tex]

[tex]f(-1)=-12[/tex]

Therefore, the value of f(-1) is -12.

Related Questions

solve em for me please

Answers

Take another pic thats clearer

The formula for compound interest is A=P(1+)"where n is the number of times interest is compounded per year. Jamal invests $3000 in an account that pays annual interest at a rate of 5%, compounded monthly. How much money will be in the account after 6 years? 3 of 5 QUESTIONS O A=3000(1+.05)=$4020.29 А O A=3000(1+0.05)=3153.16 O A =300017 3:35:12283542.24 O A =3000+ 0.05)2 =54047.05​

Answers

Answer:

$4047.05

Step-by-step explanation:

A = 3000[1 + (.05/12)]^12·6

A = 3000(1.00417)^72

A = 4047.05

Answer: 4047.053232

Equation: y=3000(1.0041)[to the power of 72]

If the ratio of blue blocks to red blocks is 5:7,
what is the ratio of red blocks to blue blocks?

Answers

Answer: 7:5

Step-by-step explanation: You just reverse it.

Since the ratio of blue blocks to red blocks is 5:7, you’d need to flip it in order to get the ratio of red blocks to blue blocks. This would be 7:5.

Rewrite 10x + 7x - 5 (3x) − ( - 3y)

Answers

Answer:

2x + 3y

Step-by-step explanation:

10x + 7x - 15x + 3y=

17 x - 15 x + 3y

2x + 3y

Determine whether the ratios are equivalent.

3 : 10 and 9 : 25

Please Help!!

Answers

Answer:

They aren't

Step-by-step explanation:

9/25 / 3= 3/8.3

3/10 x 3 = 9/30

none of those equal to each other

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Answers

Answer:c. 18j+10p=95.42

11j+16p=53.33

Step-by-step explanation:

j stands for journals and p stands for pencils and what goes after the = is the amount payed

Erin loves to play sports! She has earned 3 tennis trophies, 4 basketball trophies, 7 soccer trophies, and 1 volleyball trophy.

Answers

Answer: R = 3/7

Step-by-step explanation:

The complete question is:

Erin loves to play sports! She has earned 3 tennis trophies, 4 basketball trophies, 7 soccer trophies, and 1 volleyball trophy.

What is the ratio of Erin's tennis trophies to soccer trophies?

This is simply the quotient between the number of tennis trophies and the number of soccer trophies.

She has 3 tennis trophies and 7 soccer trophies, then the ratio is:

R = 3/7

Find the Surface Area of the following figure.

a. 64
b . 32

Answers

Answer:

64

Step-by-step explanation:

Surface area=2(wl+hl+hw)

w=4, h=4, l=2

2(4(2)+4(2)+(4)(4))

2(8+8+16)

2(16+16)

2(32)

64

The surface area of the figure is a. 64
16•2=32
8•4=32
That gives you 64

can someone help me wit dis plz​

Answers

Answer:

58.6

Step-by-step explanation:

cos(35) = 48

             ------- = 58.6

                 x

             

In a system of equations, two different lines intersect. How many solutions does the
system have?
a) Zero
b) One
c) Two
d) Infinitely many

Answers

A) One
If the line is intersecting and is parallel then the line will only intersect once at one point

can someone pls help i know this seems easy but its not for a none smart person like me

Answers

Answer:

1/2

Step-by-step explanation:

3/4 * 2/3 = 1/2

"A candy store sells different types of candy in paper pyramids. The medium-sized pyramid has a base length of 5 inches and a base width of 3 inches. The height of the paper container is 8 1/2 inches. what is the volume of the pyramid, measured to the nearest 10th of the cubic inch?" Please help!

Answers

Answer:

088y765

Step-by-step explanation:

2. A swimming pool has the shape of a
rectangular prism. The pool is 12 feet long,
10 feet wide, and 6 feet deep. What is the
volume of the pool?
A 360 ft
B 620 ft
C 720 ft
D 1,440 ft

Answers

Answer:

Volume= lxwxh

12 x 10 x 6= C

720 ft

Step-by-step explanation:

To figure out the volume, you need to use V=width•height•length. So, 10•6•12= 720 ft. The answer is C.

I'm in need of assistance-

Answers

Answer:

q

Step-by-step explanation:

Drinks and snacks can be bought in a cinema.
Drinks
Snacks
coffee
cola
orange
$1.50
popcorn
£1.25
nachos
95p
ice cream
chocolate
Special Offer
Buy one drink and two different snacks for £3.99
f1.75
£1.15
f1.60
85p
Laura is going to buy one drink and two different snacks.
Work out the most money that Laura can save by using the Special Offer.

Answers

Answer:

I think 89.1

Step-by-step explanation:

I Dont know.

Nagmamadali Lang

Ewan

-7(6a - 3) - 2a = -27 + 4a

Answers

the letter a is 1
good luck!!!!!!!

What is the length of each leg of the triangle below?
O A. 15
O B. 11.3
O c. 11
O D. 1
O E. 11
O F. 22

Answers

Answer:-
(Apply the formulas urself)
Acc. to Pythagoras theorem:
>> a^2 + b^2 = c^2

>> sinθ = P/H
cosθ = B/H
tanθ = P/B

Note: P means Perpendicular
B means Base
H means Hypotenuse

11) Wayne exercised for 5/6 of an hour in the morning and 1/3 of an hour in the evening. How much more of an hour did Wayne spend exercising in the morning than in the evening? *

Answers

He spent 3/6 hours more or 30 minutes more

PLEASE ANSWER FAST!!
Which equation is in standard form?

a) 3x - 4y - 2 = 0

b) y = -2x - 3

c) 3x + 7y = 4

d) y = 2

Answers

Answer:

c

Step-by-step explanation:

The answer of this question is c

can anyone help for good luck

Answers

Answer:

Step-by-step explanation:

Write the equation of the line in fully simplified slope-intercept form.
ਪੂ
11
NAUa006 5 5
1
-12-11-10-9-8-7-6-5-4-3-2-1,
1 2 3 4 5 6 7 8 9 10 11 12
-3
-4
-5
-6
-7
-8
-10
-12

Answers

Answer:

The slope of this line will be y=-3/4x+3

Step-by-step explanation:

Hope this Helped

Chapter 2 Test
1) Choose the option that lists the values in order from least to greatest:
0.55
3
3
0.52
1
7
1
a) 3,0.52 ,0.55,
b) Ķ, 0.55 ,0.52,
C) 0.52, Ž, 0.55 , }
d) 0.52, 0.55,,
317
2) Choose the option(s) that are equal in value Marko

Answers

Answer:

C

Step-by-step explanation:

The correct answer is option C) 0.52, Z, 0.55 , }

An apple falls out of a tree from a height of 64 feet. How long does it take to fall and hit Isaac Newton, assuming Newton is lying on the ground. Use h = -16t^2 + h_0

Answers

Answer:

Step-by-step explanation:

Don't get it

Find the missing angle.

Answers

Interior angles sum: 180(3-2) = 180

180 - (76 + 59) = 45

Your answer: 45

Answer:

45°

Step-by-step explanation:

USING TRIANGLE ANGLE SUM THEOREM:-

m∠1= 180°- (76°+59°)= 180°-135°=45°

Hope it helps! :) ~

"The Martin family's truck gets an average of 25 miles per gallon of fuel. Predict how many miles they will be able to get from 7 gallons of fuel by using equivalent rates." (Explain with fractions/ equivalent rate in detail pls)

Answers

Answer:

175 miles

Step-by-step explanation:

Average of 25 miles per gallon of fuel

Miles : gallons = 25 : 1

Predict how many miles they will be able to get from 7 gallons of fuel by using equivalent rates

Let x = number miles

Miles : gallons = x : 7

To find x

25 : 1 = x : 7

25/1 = x/7

Cross product

25*7 = 1*x

175 = x

x = 175 miles

Number miles = 175

How many have more than one quart of water?

Answers

Answer:

I think 3 have more, but I am not 100 percent

HELP what is the coefficient of 14x?

multiplication
14
14x
x

Answers

Coefficient of 14x is 14

Coefficientis the number in front of the letter. For example, coeffient of 2b is 2. When there is no number in front of the letter the coefficient is 1.

Write the equation of the line in fully simplified slope-intercept form.
11
10
8
6
5
-12-11-10-9-8-7 -6 -5 -4 -3 -2 -1
1 2 3 4 5 6 7 8 9 10 11 12
-6
7
-10
-11
- 12

Answers

Answer:

The slope of this line will be y=-4/5x+2

Explanation:

Hope this Helped

Andy solve an equation as shown below. What error did Andy make?

Answers

Answer:

Step-by-step explanation:

Whatever you do to the left you must do to the right, he multiplied 12 but forgot to multiply the -4 on the left and the + 1 on the right by the number 12

During the annual black Friday sale,the OLX sold a price of ski boots at regular price of $245 at a discount of 40%the boots cost 96$, and expenses at 26% of the regular price, how much was the ski boots sold

Answers

Answer: $147

Step-by-step explanation:

The boots were sold at a 40% discount of the regular price of $245.

The price they were sold at is therefore:

= Price * ( 1 - discount)

= 245 * ( 1 - 40%)

= 245 * 60%

= $147

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