What is the value of (x^3 − 7x^2 − 18x + 42) when x = 3?

Answers

Answer 1

Answer:

-150

Step-by-step explanation:

x^2 - 7x^2 - 18x +42

3^2 - 7(3)^2 - 18(3) + 42

9 - 63 - 54 + 42

-54 -54 + 42

-108 + 42

-150


Related Questions

Solve for n. 56 = -4n

Answers

Answer:

-14

Step-by-step explanation:

ok

Which polynomial represents the sum below (8x^2 + 5x + 3) + (-5x^6 - 2x^5 - 4x^2 - 2x)

Answers

Answer:

-5x^6 - 2x^5 + 4x^2 + 3x + 3

Step-by-step explanation:

Combine like terms from each of the polynomials.

(8x^2 + 5x + 3) + (-5x^6 - 2x^5 - 4x^2 - 2x)

(8x^2 - 4x^2) + (5x - 2x) + (3) + (-5x^6) + (-2x^5)

(4x^2) + (3x) + (3) + (-5x^6) + (-2x^5)

Then, order them by degree.

-5x^6 -2x^5 + 4x^2 + 3x + 3

what is 2x - 3 = 11

Please help me I would really appreciate it thank u

Answers

Answer:

ok if you are asking for "what is x" your answer would be 7

Step-by-step explanation:

so first what I did was add the the tree to the 11 to get fourteen then i thought hmm what times 2 equals fourteen and boom I got my answer of seven

Answer:

x = 7

Step-by-step explanation:

2x - 3=11

collect like terms

11+3=2x

14 = 2x

divide both sides by 2

14/2 = 2x/2

7 = x

helpppppppppppp! please

Answers

Answer:

x = 36

Step-by-step explanation:

2x + 3x = 180° (consecutive angles are supplementary)

5x = 180

Divide both sides by 5

5x/5 = 180/5

x = 36

if the price of the petrol increases by 25%,Santosh intends to spend only 15% more on petrol,how much % should he reduce the quantity of petrol that he buys?​

Answers

Suppose Santosh buys quantity of gasoline today =x
Let today's price of gasoline be equal to=y

Santosh spends on gasoline today =xy

The new price of gasoline is
(increase by 25%)
=
1.25×y

Santosh wants to spend only 15% more,

he wants to spend=1.15 ×xy

Quantity he buys at new rate=
1.15 ×xy
------------ =
1.25×y

1.15x
--------
1.25

Reduction in quantity of purchase=

x- (1.15x/1.25) = 0.10x / 1.25

% Reduction in quantity of purchase of gasoline
=
0.10x
--------
1.25
--------------- ×100 =
x


0.10
-------- ×100
1.25

=
8%

What is 27 players for 12 spots expressed as a rate?

Answers

9 players 4 spots

9 players 2 spots

12 spots 27 players

3 plays 2 spots

Answers

Answer:

9 p 4 s

Step-by-step explanation:

That's the answer.

A. 9 players 4 spots

what is rate and its example?

In math, a rate is a ratio that compares two different portions that have distinct units. for example, if we say John types 50 words in a minute, then his rate of typing is 50 words per minute. The word "per" gives a clue that we are dealing with a rate.

rate is a ratio among measurements using different units, for example, births per year, cost per person, words per minute.

All rate problems can be solved by using the formula D = R(T), which translates to distance (D) equals rate (R) multiplied by time (T)

Learn more about rate here

https://brainly.com/question/25537936

#SPJ2

What’s the equation of the line?

Answers

Answer:

y= -7

Step-by-step explanation:

Cody and Ashley are helping their dad fertilize the lawn. They have 3 1/3 pounds of fertilizer and 3 buckets. Each bucket will get the same amount of fertilizer. Cody measures 1 pound of fertilizer into each bucket.

The following equation represents this situation, where x represents the additional amount of fertilizer each bucket will get.
3 (x+1) = 3 1/3

How much more fertilizer should each bucket get?
A. 1/9 of a pound
B. 2/3 of a pound
C. 2/9 of a pound
D. 1/3 of a pound​

Answers

Answer: They have 1/3 pounds of fertilizer and 3 buckets

Step-by-step explanation:

Please help me please !

Answers

Answer:

A) (a+2)(a-2)

Step-by-step explanation:

The answer is A.

In a painting of the Mona Lisa, the length of the painting is 4 1/2 inches. Milo scales the drawing up by 2 3/4?

Answers

what kind of idiotic question is that

does a idiot teacher exists?

Find the area of the shaded (gray) region.



Question 13 options:

24 cm squared


60 cm squared


84 cm squared


36 cm squared

Answers

60 cm squared that is the answer hope this helps

At a popular rock-climbing site in Yosemite National Park, a randomly selected

Answers

Answer:

please be more specific

Step-by-step explanation:

What’s this shape called?

Answers

Answer:

This shape is called triangle

The shape is a concave polygon

A certain bookstore chain has two stores, one in San Francisco and one in Los Angeles. It stocks three kinds of books: hardcover, softcover, and plastic (for infants). At the beginning of January, the central computer showed the following books in stock.
Hard Soft Plastic
San Francisco 1,000 2,000 6,000
Los Angeles 1,000 6,000 2,000
Its sales in January were as follows: 600 hardcover books, 1,200 softcover books, and 1,900 plastic books sold in San Francisco, and 300 hardcover, 200 softcover, and 400 plastic books sold in Los Angeles. The bookstore chain actually maintained the same sales figures for the first 6 months of the year. Each month, the chain restocked the stores from its warehouse by shipping 500 hardcover, 1,400 softcover, and 1,400 plastic books to San Francisco and 600 hardcover, 600 softcover, and 600 plastic books to Los Angeles.
(a) Use matrix operations to determine the total sales over the 6 months, broken down by store and type of book.
Hard Soft Plastic
San Francisco
Los Angeles
(b) Use matrix operations to determine the inventory in each store at the end of June.
Hard Soft Plastic
San Francisco
Los Angeles

Answers

Answer:

a. Sales from January to June: Matrix B6

                             Hard    Soft       Plastic

San Francisco     3,600   7,200     11,400

Los Angeles        1,800    1,200      2,400

b) Ending Inventory: Matrix D:

                            Hard      Soft      Plastic

San Francisco      400     3,200     3,000

Los Angeles     2,800     8,400     3,200

Step-by-step explanation:

a) Data and Calculations:

Stock on January 1: Matrix A

                              Hard    Soft       Plastic

San Francisco       1,000   2,000    6,000

Los Angeles         1,000   6,000    2,000

Sales in January: Matrix B

                             Hard    Soft       Plastic

San Francisco       600     1,200     1,900

Los Angeles         300       200        400

Restocking: Matrix C

                           Hard    Soft       Plastic

San Francisco     500   1,400      1,400

Los Angeles       600      600       600

Total Sales over the first 6 months =

Matrix B * 6 = Matrix B6

Sales in January: Matrix B

                             Hard    Soft       Plastic

San Francisco       600     1,200     1,900

Los Angeles         300       200        400

* 6

=

Sales from January to June: Matrix B6

                             Hard    Soft       Plastic

San Francisco     3,600   7,200     11,400

Los Angeles        1,800    1,200      2,400

Matrix C6 = Matrix C * 6

=

Restocking: Matrix C6

                           Hard     Soft       Plastic

San Francisco    3,000   8,400      8,400

Los Angeles      3,600   3,600      3,600

Inventory at the end of June =

Matrix A + Matrix C6 - Matrix B6

= Matrix D

Stock on January 1: Matrix A

                              Hard    Soft       Plastic

San Francisco       1,000   2,000    6,000

Los Angeles         1,000   6,000    2,000

+

Restocking: Matrix C6

                           Hard     Soft       Plastic

San Francisco    3,000   8,400      8,400

Los Angeles      3,600   3,600      3,600

-

Sales from January to June: Matrix B6

                             Hard    Soft       Plastic

San Francisco     3,600   7,200     11,400

Los Angeles        1,800    1,200      2,400

Ending Inventory: Matrix D:

                             Hard      Soft       Plastic

San Francisco      400     3,200     3,000

Los Angeles     2,800     8,400     3,200

is 6 a factor for 71

Answers

Answer:

no its not kpfkansnsbsdhdbdb

Read the sentence.

She did not want to take sides in the argument.

Which of the following sentences means the same thing?

A.
She was neutral during the argument.

B.
She was outspoken during the argument.

C.
She was entitled during the argument.

D.
She was unequal during the argument.

Answers

Answer:

A

Step-by-step explanation:

I took the quick check : D

Answer:

A

Step-by-step explanation:

I already did the quick check too

Evaluate the expression. (38 + 10) ÷ 12 + 52

Answers

48/12=4
4+52=56
Answer 56

Answer:

56

Step-by-step explanation:

(Use PEMDAS for the order of operations)

First, solve everything in parentheses. You get this:

48 ÷ 12 + 52

Next, divide. You get this:

4 + 52

Lastly, add for the answer:

56

S(n) = 3n + 4, n = { 1, 2, 3, 4 }

Answers

7, 10, 13, 16 and so on

What is the mean and range of 15 20 18 22 22 28 29

Answers

Answer:

Mean = 22

Range = 14

Step-by-step explanation:

pls give brainliest

Square B is a dilation of square A. What is the scale factor?

Answers

This question is incomplete, the missing diagram is uploaded along this answer below.

Answer:

the scale factor is 5/4

Step-by-step explanation:

Given the data in the image below;

B is a dilation of square A, scale factor = ?

B is a dilation of square A, that is; B is a larger form of square A.

now, to get the scale factor;

The side length of Square B = 35

The side length of Square A = 28

so, the scale factor k will be;

K = 35 / 28

divided both the numerator and denominator by 7

K = 5/4

Therefore, the scale factor is 5/4

each marble bag sold by Yoko's Marble Company contains 5 yellow marbles for every 6 red marbles. If a bag has 42 red marbles, how many yellow marbles does it contain?

Answers

35 yellow marbles
42/6=7
7x5=35

Given that R
7x + 7y
Find x when y : 2 and R= 8
Give your answer as a fraction in its simplest form.
X =

Answers

Step-by-step explanation:

r = 7x + 7y

8 = 7x + 7 ×2

8 = 7x + 14

7x = 14 - 8

7x = 6

X = 6 / 7

Answer:

it's clear right

Step-by-step explanation:

i hope it's helps

Find the values of x, y, and z.

Answers

Answer:

x = 20°

y = 160°

z = 160°

Step-by-step explanation:

x = 20°

(Measure of arc is equal to the measure of its corresponding central angle)

z = 180° - 20°

(Linear pair angles)

z = 160°

y = z

(Measure of arc is equal to the measure of its corresponding central angle)

y = 160°

20, 160, 160 hope it helps

I need help FAST!!!!

Answers

Answer:

Step-by-step explanation:

okay, so here are a few methods you can use.

___

1) +

x + 7 = 10 so because this is addition we use the reverse, subtraction. So

x - 7 = 10 - 7 and that equals to 3.

2) -

x - 2 = 10 so because this is subtraction we do the reverse, addition.

x + 2 = 10 + 2 and that equals to 12.

3) x

x times 3 = 21 because this is multiplying we divide.

x/3 = 21/3 and that would be 7.

4) /

x/2 = 10 same as above, reverse is multiplying.

x times 2 = 10 times 2 and thats 20.

GL!

I need help finding the value of each express?

Answers

Answer:

part B (12)

part C (-6)

part D (6)

Step-by-step explanation:

just divide and multiply

Whoever answers gets brainliest I need 1-4 ASAP please!!! Thank you

Answers

a

Step-by-step explanation:

MIDPOINT AND DISTANCE DUE TONIGHT NEED ASAP

Answers

Answer:

1. B

2. E

Step-by-step explanation:

d=√((x_2-x_1)²+(y_2-y_1)²)

[tex]d = \sqrt{(11--7)^{2} + (-5-2) ^{2} } [/tex]

=19.31

0.5-(6-0.5), -2- (1--2)

0.5-5.5,-2-3

(-5,-5)

the sum of a number and its multiplicative inverse is 5 times the number

Answers

Answer:

Holii me ayudas a ganar plis

HELP PLZ I HAVE LIKE 20-30 MINUTES PLZ I BEG ILL MARK YOU BRAINLIEST

Answers

Answer:

.........(loading)....................

Step-by-step explanation:

...........................

El producto de w y 9

Answers

Answer:

Step-by-step explanation:

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