Mathematics College

find the value 3x^2+2x+5, if x=-7

Answers

Answer 1
-450
...................
Answer 2

Answer:

432

Step-by-step explanation:

Original Equation:

3x^2 + 2x + 5

x = -7

3 multiplied by -7 = -21

Equation:

-21^2 + 2x + 5

-21 multiplied to the second power is 441

(two negatives cancel each other out making the number positive)

Equation:

441 + 2x + 5

2 multiplied by -7 is -14

441 + -14 + 5

441 + -14 = 427

427 + 5 = 432

Answer: 432

Hope I helped :)

Please consider Brainliest :)

Related Questions

Find the product. 5.2 × 10.38

Answers

Answer:

The answer would be approximately 53.976

Step-by-step explanation:

Answer:

53.976

Step-by-step explanation:

5.2 × 10.38 = 53.976

I hope this helps!

If f(x) = 6x +5 and g(x) = 2x – 7 find (fºg)(x)

Answers

Answer:

f(g(x)) = 12x - 37

Step-by-step explanation:

Step 1: Define

f(x) = 6x + 5

g(x) = 2x - 7

Step 2: Find f(g(x))

f(g(x)) = 6(2x - 7) + 5

f(g(x)) = 12x - 42 + 5

f(g(x)) = 12x - 37

What is the inverse function of f(x)= x/x-2

Answers

Answer: f^-1(x) = 2x/x-1

Explanation:
Setting y=f(x)

y=x/x-2

This may be rearranged as follows

y(x-2) = x

x•y-2y = x

x•y-x = 2y

x=2y/y-1

The expression shows x in terms of y.

That is it! The inverse function of f(x).

Answer:

f-1(x)=2x/x-1

Step-by-step explanation:

Solve the equation for x. Check to make sure the original equation has a true value for x you find
O solve
5(x+1)+4/6=4

Answers

Answer:

x=-1/3

your welcome, good luck :)

HELP !!!! EASY QUESTION will give brainliest!!!!i

Answers

the answer for this equation is 19 for the value of b

Natalie finishes piano practice at 2:45 p.m. after practicing for 37 minutes. What time did Natalie’s practice start?

Answers

Answer:2:08 pm

Step-by-step explanation:

Answer:

2:18

Step-by-step explanation:

45-37=18 so the time is 2:18

Please Please Please help me with this! I am so confused, I have no idea how to do it. I will make you brainiest!

Answers

Answer:

a. -29

b. 16

c. -6

d. 23

e. ?

f. x = -5

g. x = -24

h. x = 4

i. -29

j. 16 i think

Step-by-step explanation:

john needs 480 pounds of dough to make 40 extra large pizzas.how much dough is needed to make 50 extra large pizzas?​

Answers

Work:

480 x
------ = -----
40 50

24000 = 40x
600= x

600 pounds of dough is needed to make 59 extra large pizzas.


A line passes through the point (10, 6) and has a slope of
2
5
Write an equation in point-slope form for this line.

Answers

In point slope it is y-6=2/5(x-10)

n - 8 + n = 1 - 4n
solve for n​

Answers

we need more details.
It is( n=1.5 ) Explanation n+n+4n=8+1 6n = 9. So that makes N=1.5

A savings account with an annual interest rate of 4.5% is compounded quarterly. After 10 years,
there is $3910.94 in the account. What was the initial amount of investment?

Answers

Answer:

the answer is 12

Step-by-step explanation:

the answer is 12

Amal can run 1/8 mile in 1 1/2 minutes. If he can maintain that pace, how long will it take him to run 1 mile?

Answers

Answer:

the answer would be 12 minutes

Step-by-step explanation:

Which numbers are a distance of 6 units from 2 on the number line

Answers

Answer:

  {-4, 8}

Step-by-step explanation:

If 2 is the right-most number, the other one is ...

  2 -6 = -4

If 2 is the left-most number, the other one is ...

  2 +6 = 8

The numbers -4 and 8 are 6 units from 2 on the number line.

Pls help me soon! :)

Answers

Answer:

x=32

y=35

Step-by-step explanation:

x= 32 degrees by vertical angles

y= 35

180-90-23-32= 35

< HG =180

<GOE = 23

<EOA = x = 32

<HOC = RIGHT ANGLE = 90

write the numeral for fifty million and sixty thousand​

Answers

500060 is the answer

Answer:

Fifty million and sixty thousand

Step-by-step explanation:

5060000

1 million =1,000,000

question 2 I mark as brainliest ​

Answers

The last answer is the correct one

Answer:

D: 3x(4+6)

Step-by-step explanation:

it tells you that you need to add 4 and 6 and then multipy the SUM of that by 3. so you would need to have the 4+6 in parenthesis and then multiply the 3 later

Solve for the short problem in the screenshot, please!

Answers

Answer:

77/5

Step-by-step explanation:

Simplify the expression.

Answer:

15 2/5

As an mixed fraction.

Two object that are similar have the same

Answers

Are you able to provide a picture or more clarification on this question?

Answer:

Two objects are similar if they have the same shape,or one has the same shape as the mirror image of the other.

Hope that helped :3

Your percent grade varies directly with the number of correct answers. You got a
grade of 80 when you had 20 correct answers, What would your percent grade
be with 24 correct answers?
96%
help!!!

Answers

Answer:

96%

Step-by-step explanation:

20/ 0.80 = 25 (total number of questions)

24/25 = .96 x 100 = 96%

substract the polynomials and simplify (-3r2-2r-4)-(9r2+7r+2)

Answers

Answer:

-12r2-9r-6

Step-by-step explanation:

-distribute the subtraction symbol  to the second group of numbers

-(9r2+7r+2) = (-9r2-7r-2)

-then combine each term together (-3r2-2r-4)+(-9r2-7r-2)

= -12r2-9r-6

HOPE THIS HELPS!!

Segment HK is divided by point J at a ratio of 3.4. If H(6,9) and J(12, 18), what are the coordinates of point K?

Answers

Answer:

Step-by-step explanation:

[tex]x=\frac{mx2+nx1}{m+n}\\let~coordinates ~of~K~be~(x,y)\\12=\frac{3x+4*6}{3+4}\\12*7=3x+24\\3x=84-24\\3x=60\\x=60/3=20\\18=\frac{3y+4*9}{3+4}\\18*7=3y+36\\3y=126-36\\3y=90\\y=90/3=30\\so~K~is~(20,30)[/tex]

Nia has $19.50 to ride the subway around New York. It will cost her $0.75 every time she rides. Identify the dependent variable and independent variable in this scenario.

Answers

Answer:

Independent variable- subway cost

dependent variable- nias money ($19.50)

Step-by-step explanation:

Tia is making strawberry lemonade for a baseball tournament. The recipe calls for 2
3
cup of strawberries for each gallon of lemonade. She has 6 cups of strawberries. How many gallons of lemonade can she make?

Tia can make
gallons of strawberry lemonade.

Answers

answer:

she can make 9

Answer:

9

Step-by-step explanation:

I just did the question got it right

What value(s) of x make the following equation true?
2x - 6 = 3x + 1 - 2x - 7

Answers

Answer:

x = 0

Step-by-step explanation:

2x−6=3x+1−2x−7

Step 1: Simplify both sides of the equation.

2x−6=3x+1−2x−7

2x+−6=3x+1+−2x+−7

2x−6=(3x+−2x)+(1+−7)(Here we Combine Like Terms)

2x−6=x+−6

2x−6=x−6

Step 2: Subtract x from both sides.

2x−6−x=x−6−x

x−6=−6

Step 3: Add 6 to both sides.

x−6+6=−6+6

x=0

Kenny bought 20 packs of baseball cards. There are 12 cards in each pack. How many cards did Kenny buy?

Answers

Answer:

240

Step-by-step explanation:

20 x 12 = 240

Kenny bought 240 baseball cards.

Becky is typing an essay for her history class. The Essay needs to be 7800 words long Becky can type 30 words per minute. If becky has 600 words typed so far, how many hours will it take becky to finish typing the essay

Answers

Answer:

4.3 hours

Step-by-step explanation:

7800/30 = 260

260/60 = 4.333333 hours

Answer:

sorry I need more points to ask questions and I really need the answers I know you understand, thankyou :)

Step-by-step explanation:

:))

PLEASE HELP

If u can’t read it good it says: which equation matches this graph?

1. Y= -4x + 3

2. Y= 4x + 3

3. Y= -(1/4) x +3

4. Y=- (1/4)x + 3

Answers

Answer:

It's might be 2 but I'm not for sure

6. A landscaping company ordered 13 plants and 4 trees for a total of $487. If plants are $8 each write and solve a linear equation to find the cost for each tree

Answers

Answer:95.75

Step-by-step explanation:

13x + 4y = 487

13*8 + 4y = 487

4y = 487 - 13*8

y = (487 - 13*8)/4

y = dollars per tree = 95.75

Answer:

trees are $95.75

Step-by-step explanation:

13(8) + 4t =487

104 + 4t= 487

104 -104 + 4t = 487 -104

4t = 383

4/4t = 383/4

t = 95.75

the sum of 5 times a number and 23

Answers

Answer:

5n+23

Step-by-step explanation:

five times a number is 5n and 23 is +3

5n+23

5n is 5 times a number and +23 is and 23

Please help a and b, Solve each system of equations algebraically.

Answers

Answer:

I hope this answer is Wright

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