f(x) = –2x2 + 8x – 10
Find f(-4)

Answers

Answer 1
Х=2.5.................
Answer 2

Answer: x = -74

Step-by-step explanation:


Related Questions

At the end of summer clearance sale Nathan sees a hat market at 65% off the original price was $12.98 after the discount what is the final price of the hat round your answer to the nearest cent

Answers

Answer:

$4.54

Step-by-step explanation:

Because if you take $12.98 and multiply that by 65% you will get 8.437 and when you subtract that by the original amount you will get $4.54.

The high temperature for the day is 28°F. The record low for the day was -12°F. What is the difference in temperature?

Answers

Answer:

40

Step-by-step explanation:

12 + 28

Answer:

40°

Step-by-step explanation:

So the highest is 28 and the lowest is -12. First, you get to zero so 28-28=0 then, to get to -12 you do 0-12= -12. Then I added 28+12 :D

there are 23 people attending a luncheon if a table can hold three people how many tables do they need​

Answers

Answer:

8

Step-by-step explanation:

Answer:

8 tables

Step-by-step explanation:

23 isn't a multiple of three but 24 is

24/3 = 8

They need eight tables. One table will have only two people sitting at it instead of three

Lin is shopping for a couch with her dad and hears him ask the salesperson, “How much is your commission?” The salesperson says that her commission is 5.5% of the selling price. How much commission will the salesperson earn by selling a couch for $495?

a
$20, 5.5% of 495 is 20.
b
$19.08. 5.5% of 495 is 19.08.
c
$27.23, 5.5% of 495 is 27.225.

Answers

Answer:

Step-by-step explanation:

The answer is $27.23 for the commission

Work out problem:

495×5.5%=27.225

So you round that off to 27.23

When working with a problem with percentages, you always multiple to figure out how you got your and what is your answer.

A vitamin C tablet contains 1/4
of a gram of vitamin C. You take 1 1/2
tablets every day. In simplest form, how many grams of vitamin C do you take every day?

Answers

Answer:

3/8 grams

Step-by-step explanation:

1 tablet ⇒ 1/4 grams

Multiply the amount of tablets by 1/4 to find the answer

1 1/2 tablet ⇒ 1 1/2 *1/4 = 3/2 * 1/4 = 3/8 grams

The altitude (i.e., height) of a triangle is increasing at a rate of 1.5 cm/minute while the area of the triangle is increasing at a rate of 3.5 square cm/minute. At what rate is the base of the triangle changing when the altitude is 10 centimeters and the area is 86 square centimeters? The base is changing at cm/min.

Answers

Answer:

-1.88cm/min

Step-by-step explanation:

Given

dh/dt = 1.5cm/min

dA/dt = 3.5cm²/min

Height h = 10cm

Area A = 86cm²

Required

db/dt

b is the base

h is the height.

Area of a triangle A = 1/2bh

dA/dt = dA/db•db/dt + dA/dh •dh/dt

dA/db = h/2 = 10/2 = 5cm

Get the base

86 = 1/2(10)b

5b = 86

b = 17.2cm

dA/ dh = 1/2b = 1/2(17.2)

dA/dh = 8.6cm

.substitute given values into the formula above;

dA/dt = dA/db•db/dt + dA/dh •dh/dt

3.5 = 5 db/dt + 8.6(1.5)

3.5 = 5 db/dt + 12.9

5 db/dt = 3.5-12.9

5 db/dt = -9.4

db/dt = -9.4/5

db/dt = -1.88cm/min

Hence the base is changing at -1.88cm/min

in the figure, △ABC is similar to △DEF. what is m∠1

Answers

Answer:

C. 139°

Step-by-step explanation:

Given:

m<A = 62°

m<B = 77°

Required:

Find m<1

Solution:

Since ∆ABC is similar to ∆DEF, therefore:

<A ≅ <D, which means m<D = 62°

<B ≅ <E, which means m<E = 77°

<C ≅ <F

Therefore, based on exterior angle theorem:

m<1 = m<D + m<E

m<1 = 62° + 77° (substitution)

m<1 = 139°

Amy's penny bank is 1/4 full. After she adds 240 pennies, it is 5/8 full. How many pennies can Amy's bank hold?

Answers

The penny bank can hold 640 pennies

If you would like me to show how I got it I can

Point A is located at (0, 7). After it is transformed, point A' is located at (0, -7). How was the point transformed?
it was reflected in the x-axis
it was rotated 270°
it was reflected in the y-axis
it was rotated 90° around the origin

Answers

Answer:

it was reflected over the x axis

Step-by-step explanation:

.......

Solve the equation.
2(x + 5) = 2x – 3

Answers

Answer:

2(x+5)=2x-3

2x+10=2x-3

2x-2x= -3-10

0= -13

Step-by-step explanation:

The area of a trapezoid is 864cm². It has a height of 24 cm, and the length of one of its bases is 30 cm. What is the length of the other base?​

Answers

The area A of a trapezoid with height h and bases b₁ and b₂ is equal to the average of the bases times the height:

A = (b₁ + b₂) h / 2

We're given A = 864, h = 24, and one of the bases has length 30, so

864 = (b₁ + 30) 24 / 2

864 = (b₁ + 30) 12

864 = (b₁ + 30) 12

72 = b₁ + 30

b₁ = 42

which statements can be used to write an algebraic expression to represent the phrase? ( The product of number and eighteen )

check all that apply:
A. replace a number with a variable?
b. product represents addition
c. product represents multiplication?
d. the coefficient is 18.
e. the correct algebraic expression is 18t.
f. 18 is a veritable.
g. the correct algebraic expression is t/18.

Answers

Answer:

a e f and g I think this because it has to be then they say that then ya

What is the formula for the area of a square?

Answers

Answer:

Area of a square = side times side. Since each side of a square is the same, it can simply be the length of one side squared. If a square has one side of 4 inches, the area would be 4 inches times 4 inches, or 16 square inches. (Square inches can also be written in2.)

Answer:

lxwxtor you can up it in the calculator

The low temperature for 5 days was -5° -7° -29.29 and -3°. What was the average low temperature for those
days

Answers

about -4° i think, i apologize if i’m incorrect, i haven’t done this in a while

R=14 pie=3.14 round to the nearest hundreths

Answers

Answer:

Many situations will call for you to round decimals to the nearest tenth to make the number easier to work with. Once you understand how to find the tenths and hundredths place, the process is very similar to rounding whole numbers.

Step-by-step explanation:

Many situations will call for you to round decimals to the nearest tenth to make the number easier to work with. Once you understand how to find the tenths and hundredths place, the process is very similar to rounding whole numbers.

Answer:

6

Step-by-step explanation:

The way you wrote it, it is already rounded.....

The value I remember for pi is 3.14159. This is rounded to the nearest 10-thousandth. Another way of saying the same thing is that it is "rounded to 5 decimal places".

pi--rounded off in decreasing precision:

3.14159

3.1416

3.142

3.14

3.1

3

Watch out for a trap in rounding:

Suppose I start with 5.49. To the nearest 10th, it would be 5.5. To the nearest whole digit, it is 5, not 6. If the original number were 5.51, then rounded to the nearest whole digit would be 6.

Drag the missing statements and reasons to the correct spot to complete the proof

Answers

Answer:

See attached

Step-by-step explanation:

Answer is attached

What is 4 ÷
3
5
pls help me i am time

Answers

Answer:   1.25 and .8

Step-by-step explanation:

Answer:20 over 3

Step-by-step explanation:

si el dominio de la función f(x)= 3x-2 es el conjunto {1,2,3} y su contradominio es el conjunto {1,4,7,10}. ¿Cuál es el rango de la función?

Answers

Answer:

I don't speak Spanish sorry

Find the 10th term in a sequence whose general term is an = n2 – 8. Question 7 options: A) 92 B) 108 C) 12 D) 113

Answers

Answer:

92

Step-by-step explanation:

The 10th term in a sequence whose general term is [tex]a_n = n^2 - 8[/tex] will be 92. so option A is correct.

What is arithmetic sequence?

An arithmetic sequence is sequence of integers with its adjacent terms differing with one common difference.

If the initial term of a sequence is 'a' and the common difference is of 'd', then we have the arithmetic sequence as:

a, a + d, a +  2d, ... , a + (n+1)d, ...

Its nth term is

T_n = a + (n-1)d

(for all positive integer values of n)

And thus, the common difference is

T_{n+1} - T_n

for all positive integer values of n

We need to find the 10th term in a sequence whose general term is

[tex]a_n = n^2 - 8[/tex].

So, the 10th term is (10)²- 8

= 100 - 8

= 92

Therefore, the 10th term in a sequence whose general term is

[tex]a_n = n^2 - 8[/tex] will be 92. so option A is correct.

Learn more about arithmetic sequence here:

https://brainly.com/question/3702506

#SPJ5

Vedant received two quotes for new carpet for his home. The quote from Company A is $0.15 less per square foot than the quote from Company B. If Vedant plans to buy 1,200 square feet of carpet, how do his total costs from the two companies compare?
Company A is cheaper by $180.

Company B is cheaper by $180.

Company A is cheaper by $8,000.

Company B is cheaper by $8,000.

Don’t make any funny jokes about this and don’t say idk or something like that or I’ll report you.

Answers

Answer:

Company B is cheaper by $180.

Step-by-step explanation:

just do 1,200 square feet x 0.15 = 180

Answer:

b as in big cat

Step-by-step explanation:

a corn vendor at a farmers market was selling a bag of 8 ears of corn for $2.56 anithert vendor was selling a bad of 12 for 4.32. which bag is the better deal?

Answers

you have to find out how much money each bag would be.
2.56/8 = 0.32
4.32/12 = 0.36
8 ears of corn is thebetter deal

Besides 95 and 1, what is one factor of 95?

Answers

Answer:

5

Step-by-step explanation:

What strategy can you use to solve rate problems?

Answers

Draw a diagram , wrote down given information and unknown find equation that relates various quantities of the problem and differ nitrate using the chain rule ( differentiate )

Will make you brainliest!!! If correct!!

Answers

Answer:

Step-by-step explanation:

y = - [tex]\frac{1}{4}[/tex] x + 3 ( equation of line t )

y - (- 2) = - [tex]\frac{1}{4}[/tex] [ x - (- 2)] ⇒ y = - [tex]\frac{1}{4}[/tex] x - [tex]\frac{5}{2}[/tex] ( equation of line u )

Yoooo who’s smart I need help in this ASAP

Answers

3^3 That Check Mark 1/3 Was The Answer I Got , Sorry Of It’s Wrong

Answer:

3[tex]\sqrt[9]{Z}[/tex]²

Step-by-step explanation:

Expression -

(27[tex]\sqrt[3]{Z}[/tex]²) ^1/3

Transform the expression -

³[tex]\sqrt[3]{27}[/tex][tex]\sqrt[3]{Z}[/tex]²

Simplify - //Note: ignore the ' * '//

3[tex]\sqrt[3]{*}[/tex][tex]\sqrt[3]{z}[/tex]²

Simplify (Again) -

3[tex]\sqrt[9]{Z}[/tex]²

True or False 2 is a root of x^6-9x^4+24x^2-16=0 two times

Answers

Answer:

True

Step-by-step explanation:

No need for explanation

i’m really tired and don’t feel like doing these math expressions, giving brainliest to whoever answers correctly.

Answers

Answer:I believe the answer is the second one.

Step-by-step explanation:

A circular oil spill in the ocean is increasing in diameter at a rate of 200 feet per hour. By how many square feet is the oil spill increasing per hour?
Increase in diameter: d(h) = 200h; h in hours
Increase in area: A(d) = π(0.5d)2; d in feet
Which composite function represents the total area of the oil spill as a function of hours?

Answers

Answer:

A(d(h)) = π(100h)2

Step-by-step explanation:

In edge it would be C

When solving these word problems it is helpful to remember that they ask us to use composition of functions to solve it so if it is the total area in regards to hours, what you would need to do look at the problem in this manner:  

A( (d(h) )= A (Pi(0.5x200h)^2

and when you simplify like terms it would be:

Pi(100h)^2

Write a multiplication expression without exponents that is equivalent to 3^4

How many factors of 3 did you write?​

Answers

Answer:

Answer:  3⁴ =  3×3×3×3

3⁴ means multiply four threes together.

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

You just needed to Multiply maning the three, 4 times

I need a lot of help

Answers

Answer:

D

Step-by-step explanation:

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