If f(x) = 2x2 - 9, find f(5).

Answers

Answer 1
f(5) = -25, because you have to solve 2x2 - 9 to get -5, then multiply that by 5 to get f(5) = -25

Related Questions

what is 1.6 X 10³ in standard form

Answers

Answer:

Its 1,600

Step-by-step explanation:

You just move the decimal the number the exponent is, in your case its positive 3 so you move it 3 to the right.

Hope this helps!

1.6 X 10³ written  in standard form is 1600.

What is scientific form of numbers ?

Scientific form of numbers are written in base multiplied by powers of 10.Where base is greater than or equal to 1 and less than 10.Can be expressed numerically as 1≤base<10.

Scientific form of number are compact and takes less space and they are raise to exponents.

According to the given question a number 1.6×10³ is written in scientific form we have to convert this number into standard form.

We know 10³ = 1000.

∴ 1.6×10³ = 1.6 × 1000.

= 1600.

learn more about scientific form here :

https://brainly.com/question/18073768

#SPJ2

WILL MARK BRAINLIEST NEED HELP WITH PROPORTIONS​

Answers

Answer:

x=-10

Step-by-step explanation:

either 5/51 or x=15 :))

Someone please helpppp!!no bs answers.
geometry

Answers

Answer:

Line TB is congruent to line BR.

B is the midpoint of line TR.

Line TB plus line BR is equal to or congruent to line TR.

*wink face lol*

If you could help me with the questions it would be greatly appreciated.

Answers

Answer:

I believe that number 1 is x=5

Step-by-step explanation:

Answer:

I believe that number 1 is x=5

Step-by-step explanation:

PLZ HELLP ME
:/ will receive 50 for help plus 20 for bouns If the answer is right
−2=6/7p

Answers

✽ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ✽

[tex]\boxed{p = \frac{-7}{3} }[/tex]

[tex]-2 = \frac{6}{7}p[/tex]

✽ Flip the equation.

[tex]\frac{6}{7} p = -2[/tex]

✽  Multiply both sides by 7/6.

[tex](\frac{7}{6} ) * (\frac{6}{7}p) = (\frac{7}{6} ) * (-2)[/tex]

[tex]p = \frac{-7}{3}[/tex]

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ May ♡

HELP PLZZZZZZZZZ!!!!!!!!!!

Answers

I’m pretty sure it’s d

Answer:

C

Step-by-step explanation:

Interior means on the inside. C is the only angle that is inside the shape.

Explain how to solve 2(x+3) = 10. What properties did you need to solve the equation?

Answers

Answer:

x = 2, Inverse property of subtraction

Step-by-step explanation:

Simplifying

2(x + 3) = 10

Reorder the terms:

2(3 + x) = 10

(3 * 2 + x * 2) = 10

(6 + 2x) = 10

Solving

6 + 2x = 10

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-6' to each side of the equation.

6 + -6 + 2x = 10 + -6

Combine like terms: 6 + -6 = 0

0 + 2x = 10 + -6

2x = 10 + -6

Combine like terms: 10 + -6 = 4

2x = 4

Divide each side by '2'.

x = 2

Simplifying

x = 2

Answer:

x = 2

Step-by-step explanation:

Apply the distributed property, so it now looks like this: 2x + 6 = 10Subtract 6 to each side, so it now looks like this: 2x = 4Divide each side by 2 to cancel out the 2 next to x. It should now look like this: x = 2

I hope this helps!

plz, help... ill give brainliest

Answers

Answer:

Step-by-step explanation: 15/2=7.5 19/25= 0.76 17 37/50 17.74

3.666 is not. 0.166 is your last answer

1. 15/2 = 7.5

2. 19/25 = 0.76

3. 17 37/50 = 17.74

4. 3.666

5. 0.166

help me i need it
!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

S, BB, J

Step-by-step explanation:

Because you are going greatest (positive) to least (negative)

Highest to lowest

This work problem to solving Equations

Answers

Answer:

question por favor. ............ ....

this is for my lil sis. "Round 13.989 to the nearest tenth" to lazy to answer it for her

Answers

Answer:

14.0

Step-by-step explanation:

when rounded to the nearest tenth, 13.989 is 14.0.

Answer:

Hey!

Your answer for your lil' sis is 14!

Step-by-step explanation:

The tenth column is the column directly after the decimal point...

GREATER THAN 5 = Round up...

LESS THAN 5 = Round down...

So in this case it is 9 SO WE ROUND UP

This makes it 14.0

I HOPE THIS HELPED

A fair spinner has 9 equal sections: 3 red, 2 blue and 4 green.
It is spun twice.
What is the probability of getting green both times?

Answers

Answer:

My answer would be either 8 to 18 or 4 to 9 probability.

Step-by-step explanation:

Consider the equation 1.2x + 4.8y = 18



If we graph the equation, what is the slope of the graph?

Answers

Answer:

-1/4

Step-by-step explanation:

For this equation, first divide both sides by 1.2, to get x+4y=15. Then, subtract x from both sides. Now, with 4y=-x+15, divide by 4. You should get y=-1/4x+15/4 (15/4=3 3/4 or 3.75). The formula y=kx=b, where k is slope, means the slope is -1/4.

y=2x-8
13x + 2y = 18
solving systems by the elimination method

Answers

Answer:

x = 2

Step-by-step explanation:

13x + 2( 2x - 8) =18

13x + 4x -16 = 18

13x + 4x = 34

17x = 34

x = 2

Thank you so much

Xxxxx

The ratio of adult cats to kittens at a pet care center on Monday was 5:4 there were 36 kittens there that day Sunday 46 adult cats were at the Pet Care Center what is the difference between the number of adult cats at the Pet Care Center on Sunday and Monday

Answers

Given :

The ratio of adult cats to kittens at a pet care center on Monday was 5:4 .

There were 36 kittens there that day Sunday 46 adult cats were at the Pet Care Center.

To Find :

The difference between the number of adult cats at the Pet Care Center on Sunday and Monday.

Solution :

[tex]\dfrac{\text{Number of Adult cats }}{\text{Number of kitten}}=\dfrac{5}{4}\\\\\dfrac{n}{36}=\dfrac{5}{4}\\\\n=45[/tex]

So, number of adult cats on Monday are 45.

It is given that, number of adult on Sunday are 46.

Therefore, the difference is 46-45 = 1.

Hence, this is the required solution.

Of the 50 states, 11 share a border with Canada. What is the ratio of states that border Canada to states that do not border Canada?

Answers

Answer:

50 - 11 = 39

39 states do not border Canada

11 to 39


Use the diagram to complete the statements.
Segment AD must be congruent to segment .
Segment BC must be congruent to segment .

Answers

Answer:

DC,AB

Step-by-step explanation:

Answer:

DC AB

Step-by-step explanation:

A.up
B.down
C.to the left
D.to the right

Answers

Answer:

A

Step-by-step explanation:

answer: Huuuh???

explanation: huhhh?

Amanda and three of her friends volunteer at the local animal shelter. One of their jobs is to weigh the puppies and kittens and charts their growth. Amanda's favorite puppy weighed 2.358 last month. Of it gained 1.08 how much does it weigh this month

Answers

Answer:

3.438 lbs

Step-by-step explanation:

Amanda and three of her friends volunteer at the local animal shelter

Amanda's favorite puppy weigh 2.358 lb this month.

If it gained extra 1.08 lb then the weight of the puppy this month can be calculated as follows.

= 2.358 + 1.08

= 3.438 lbs

Hence the puppy weighs 3.438 lbs this month

On his federal income tax return, Benito Silva, a single taxpayer, reported income from wages, $27,820; tips, $5,495; and interest earned, $1,466. Benito had these adjustments to income: payments to a retirement plan, $2,000; penalty for early withdrawal of savings, $19. His employer withheld $3,985 from his pay for federal income tax. Benito claims the standard deduction of $5,450 and an exemption of $3,500. Find Benito's adjusted gross income .

Answers

Answer: 50,735

Step-by-step explanation:

Eva, Josh, and David gather and shell pecans for their mother. Eva gathers 2 1/2 pounds of pecans, Josh collects 3.25 pounds, and David harvests 4 3/8 pounds. If they place all the pecans in one basket and each shells the same amount of pecans, how many pounds would each person shell? Group of answer choices

Answers

Answer:

3.375 pounds.

Step-by-step explanation:

Total number of pounds of pecans =

2 1/2 pounds of pecans + 4 3/8 pounds + 3.25 pounds

= (6.875 + 3.25) pounds

= 10.125 pounds.

The total number of person = 3 person.

Therefore, the number of pounds each person would shell =

10.125 pounds/3

= 3.375 pounds

You work 4 hours on Saturday and 7 hours on Sunday. You also receive a $35 bonus. If your paycheck was for $142.25, how much do you make an hour?

Answers

Answer:

9.75

Step-by-step explanation:

first we are going to subtract the bonus

142.25 -35 = 107.25

assuming that you are not takeing breaks you work a total of 11 hours (7+4)

so 11/107.25  = 9.75

so you would make 9.75 an hour before taxs

Express two and forty five hundredths as a decima

Answers

Answer:

2.45

Step-by-step explanation:

"Two and forty five hundredths"

"Two" will be the number '2'.

"and" will indicate the decimal.

"forty five hundredths" is '.45'.

Two and forty five hundredths as a decimal would be '2.45'.

Hope this helps.

Answer:

2.45

Step-by-step explanation:

2/1 + 45/100 = 2 + 0.45 = 2.45

or

2.00

+ 0.45

-----------

2.45

or

200/100+45/100=245/100=2.45

-6x + 3 = 5
How do I solve this??????????????

Answers

Answer:

Step-by-step explanation:

you subtarct the 3 on both sides so it would be -6x=2

then you divide on both sides by -6 so it would look like x=-1/3

Answer:

x= -0.33 or -1/3

Step-by-step explanation:

What you have to do is isolate the x variable, you do the opposite to the other side of the equation to isolate the x.

Step 1- Subtract 3 to both sides of the equation.

-6x+3= 5

     -3  -3

-6x= 2

Step 2- Divide both sides of the equation by -6.

-6x= 2

 -6  -6

x= -0.3333...

So, x equals -0.333 or -1/3.

Hope this helps! :)

1 Graph a line that contains the point (4,3) and has a slope of 1/2

(numbers on graph go up to 7​)

Answers

Answer:

the points: (8,5) (6,4) (4,3) (2,2) (0,1) (-2,0) (-4,-1) (-6,-2) (-8,-3)

Step-by-step explanation:

the point (4,3) should be dotted first, start from the (0,0) go right 4 spaces then up 3 spaces. the slope 1/2 means up 1 space then right two spaces to start plotting points on the graph. and to continue the bottom of the line it would be -1/-2 which is down 1 space then left 2 spaces.

Which expression has a value of 90?

3,600 ÷ 50
5,400 ÷ 60
6,400 ÷ 80
7,200 ÷ 90

Answers

Answer:

1. 73.2

2. 90

3. 80

4. 80

Step-by-step explanation:

you will have to divide 3,600 by 50

Answer:

None of them...

Step-by-step explanation:

3,600 ÷ 50 = [tex]\frac{1}{4}[/tex]

5,400 ÷ 60  = [tex]\frac{3}{4}[/tex]

6,400 ÷ 80  = [tex]\frac{6}{5}[/tex]

7,200 ÷ 90 = [tex]\frac{63}{20}[/tex]

Did you read the problem correctly?

could anyone tell me the answer to this quickly???​

Answers

Vertical movement five units up

HELP MEE PLEASEEEEEEEEE!!

Answers

Answer:

0x+2

Step-by-step explanation:

Answer:

Step-by-step explanation:

.Let's solve for b.

y

=

m

x

+

b

Step 1: Flip the equation.

m

x

+

b

=

y

Step 2: Add -mx to both sides.

m

x

+

b

+

m

x

=

y

+

m

x

b

=

m

x

+

y

Answer:

b

=

m

x

+

y

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Which of the following is equal to 393,500?

3.935 × 10 ^5
0.3935 × 10 ^-6
39.35 × 10 ^-4
3.935 × 10 ^-5

Answers

Answer:

3.935*10^5

Step-by-step explanation:

what is the equation?​

Answers

Answer:

  cost = 1.35n

  $33.75 for 25 songs

Step-by-step explanation:

Based on the numbers given, the cost is proportional to the number of songs downloaded. The constant of proportionality is the cost of one song: 1.35.

  cost = 1.35n

For 25 songs, ...

  cost = 1.35·25 = 33.75 . . . . dollars

__

The equation is ...

  cost = 1.35n

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