Mathematics Middle School

PLS HELP MEEEE
Consider a rectangle with

length of x2 + 5x - 4 and

width of 2x - 3

a
x^2 + 7x - 7
b
2x^2 + 14x - 14
c
2x^3 + 13x^2 + 7x - 12
d
2x^3 + 7x^2 - 23x + 12

Answers

Answer 1

Answer:

Answer is D 2x^3 + 7x^2 - 23x + 12

Step-by-step explanation:

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

Expand by multiplying each term in the first expression by each term in the second expression.

The easy way would be multiplying the first expression by 2x then set those numbers off to the side.

Then multiply the first expression by -3 and set those numbers off to the side as well.

Then add the numbers you put off to the side together.

This should result in: 2x^3 - 3x^2 + 10x^2 - 15x - 8x + 12

Combine the alike terms together

=2x^3 + 7x^2 -23x + 12

Answer 2

Answer: amongus

Step-by-step explanation:

Related Questions

Find the missing length. Round to the nearest tenth, if necessary.

Answers

Answer:

The missing length is: 19.4

Step-by-step explanation:

according to pythagorean theorem, a^2 + b^2 = c^2

the hypotenuse is 21 and side and the short leg is 8

c²-b²=a²

21²-8²

441-64

377

take the square root of 377

it is 19.41

which rounds to 19.4

x=19.4

help me quickly plz.

Answers

44 is the correct answer

A jewelry store recently sold 52 pieces of jewelry, and 22 of them were bracelets. What is the experimental probability that the next piece of jewelry sold will be a bracelet? Write your answer as a fraction or whole number.

Answers

the simplified answer is 11/26

Identify the equivalent expression for m^1/3 x m^1/5

Answers

Answer:

m^1/15 is the answer

Step-by-step explanation:

the answer is cube root m

Your soccer team is raising money for a team trip. Your coach says that your team is $145.00 short of the $2500.00 goal. If there are 24 kids on the team what is the average amount each team member must raise to meet the goal?

Answers

The closest answer would be about six I think
Each player would need to raise about 105 (104.166666667)

PlEaSe HeLp WiLl MaRk BrAinLiEst
ASAPPPPPPPPP

Answers

Answer:

Category A      3 1 8

Category B      3 2 1

Step-by-step explanation:

The relative frequency of the columns are:

                             Group 1                 Group 2                Group 3

Category 1                4/11                         1/4                         11/19

Category 2                7/11                         3/4                        8/19.

What is the frequency?

The number of times a specific value appears in the data is its frequency (f). A variable's distribution is its frequency pattern, or the collection of all conceivable values and the frequencies corresponding to those values. Frequency tables or charts are used to represent frequency distributions.

Given table is

                            Group 1                 Group 2                Group 3

Category 1                4                           3                             11

Category 2                7                          9                             8

The frequency of group 1 is (4+7) = 11

The frequency of group 2 is (3+9) = 12

The frequency of group 3 is (11+8) = 19.

The relative frequency is the ratio between the number of times an outcome value appears in the set of all outcomes and the total number of outcomes.

                             Group 1                 Group 2                       Group 3

Category 1                4/11                    3/12 = 1/4                          11/19

Category 2                7/11                     9/12 = 3/4                        8/19.

To learn more about relative frequency, click on the below link:

https://brainly.com/question/12787846

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!!!*BRAINLIEST*!!!

Xin buys a ticket for a raffle with several prizes. The probability that she wins a prize
is 0.92. Which word or phrase describes the probability that Xin will win a prize?


a. an equal chance or 50-50
b. likely
c. impossible
d. unlikely

Answers

d. there is still a chance that she can win. it’s not very high so that would cancel out b. and it’s not anywhere close to 50% so that would cancel 50-50. and it’s not a 0.00 probability so it’s not impossible

Below is how many times each of the eight cows on Frannie's Farm mooed yesterday. 28,33,37,14, 55,61,77,15 ​ Using the data, create a histogram.

Answers

Using the given data for the cows on Frannie's Farm, a histogram is created and attached with this answer.

What is a histogram?

"A histogram is a graphical representation that organizes a group of data points into user-specified ranges.

Similar in appearance to a bar graph, the histogram condenses a data series into an easily interpreted visual by taking many data points and grouping them into logical ranges or bins."

Given data for the cows on Frannie's Farm:

There are are total eight cows.

The number of times each of the eight cows mooed yesterday were 28,33,37,14, 55,61,77,15 respectively.

Now, we need to put these data on histogram to represent it graphically.

Learn more about graphical representation of data using histogram here: https://brainly.com/question/24188206

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Answer:need to push the bar up for every number showed

Step-by-step explanation:

The owner increases the sale price by the same percent that you found in part a when she buys jackets for ​$45 and sells them. How many jackets must the owner buy for the total jacket sales to be at least ​$390​? Explain your answer.

Answers

Answer:

8 R 30

Step-by-step explanation:

45 ÷ 390 = 8 R30 so the answer would be 8 jackets.

8 jackets is the Answerrr

Select all the side lengths that will make a triangle:

3,4,8

7,6,12

5,11,13

4,6,12

4,6,10

Answers

3,4,8 and 4,6,12 since the third side of a triangle has to be bigger than the other 2 sides added up.
3,4,8 and 4,6,12 or else it wouldn’t make a triangle and would be weird lol

please help! Thank you very much. ASAP

Answers

1/2 would be between 0 and 1. it’s opposite would be between 0 and -1

Answer:

the one in between 0 and 1

Step-by-step explanation:

Answer Both questions. Do the first question as a decimal.

Answers

Answer: a: 0.94 b: 6,204

Step-by-step explanation:  a: 6204/6600 converted to a fraction is 0.94. b: 94% of 6600 is 6204.

Just time it by 0.94 you get this just by subtracting 6 from 100 because the account decreases by 6 precnt then you times 0.94 and 6600 to get 6204

Snow fell in Newton twice in one day. The town received inch of snow in the morning and another inch of snow in the afternoon. How many total inches of snow fell in Newton on that day?

Answers

Answer : 1+1=2

Step-by-step explanation

1inch snow in am plus 1in snow in pm equals a total of 2in snow for that day.

the answer is 1+1=2 ok

3y-3x=9
Change the equation above into y=mx+b form

Answers

Answer:

y=x+3

Step-by-step explanation:

3y-3x=9

y-x=3

y=x+3

Answer:

y=x+3

Step-by-step explanation:

*Urgent* im not sure look at the picture

Answers

Answer:

B) x^2-64

Step-by-step explanation:

Answer: B


Step by step explaining :

A plant is already 46 centimeters tall, and it will grow one centimeter every month.
Let 'H' be the plant's height (in centimeters) after 'M' months.

Write an equation relating 'H' to 'M'. Then use this equation to find the plant's height after 11 months.

Equation: __________

Answers

Is that hit Artist and rapper dababy?????

CREATE THE TABLE
a. you bring 200 cookies to a party. Let n represent the number of people at the party and c represent the number of cookies each person receives
b. you work at a restaurant for 20 hours. let r represent your hourly pay rate and p represent the total amount you earn
c. you are going on a 240-mile trip. Let t represent the number of hours driving and s represent the speed of the car

Answers

The expression for the following statements are,

a. c = 200/n.

b. p = 20r.

c. s×t = 240.

What is a numerical expression?

A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.

a. From the information given the numerical form of the statement is,

c = 200/n.

b. From the information given the numerical form of the statement is,

p = 20r.

c. From the information given the numerical form of the statement is,

s×t = 240.

learn more about numerical expressions here :

https://brainly.com/question/29199574

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the length of a rectangle is 6 meters less than twice the width. The area of the rectangle is 140m². Find the dimensions of the rectangle.
No links please

Answers

equation 1 is 2W - 6 = L
equation 2 is 140= W * L

L=10
W=8
Equation 1 is 2W - 6
Equation 2 is 140m squared= W x L
L=10
W=8

There are 170 flyers to pass out. Erica took 38 flyers there were 4 other students that received an equal amount of flyers to pass out how many flyers did the 4 students receive to pass out?
A. 33
B. 34
C. 42
D. 52

Answers

It’s A because
170-38=132
132 divided by 4 = 33
it’s option A, 33 flyers

Can we find the sum of any data with mixed values, in example, can we add minutes and hours, or inches with feet?
answers
A. yes
B. maybe
C. no

Answers

Answer:

A

Step-by-step explanation:

If we can just maybe get more into the part it could work *this is my opinion *

please help me! Answer will get marked brainliest. ASAP! THANK U

Answers

Answer:

So, for -1, just put a dot on the positive one.

For 2.5, just put a dot that is between the negative 2 and negative three

Hope that helps! :)

-Aphrodite

Step-by-step explanation:

answer:

the opposite of -1 is 1 so it should be placed in the positive side on the 1. and 2.5 the opposite is -2.5 so it should go on the negative side on -2.5. 2..5 goes between -3 and -2.

Step-by-step explanation:

hope it helps u!

If you know the area and the base of a triangle, how can you find the height?
(20 pts)

Answers

A=1/2bh=bh/2
1/2+base=height

HELP PLEASE!!!
What is the angle measure of angle DEF?

A. 90°
B. 165°
C. 150°
D. 180°

Answers

Answer:

D

Step-by-step explanation:

DEF is merely a straight line. It has to be 180 by definition.

Find the area of the triangle. Enter your answer in the box.
A triangle with a base of eight meters and a height of three meters

Answers

The answer is 12 m2
Explanation:
12 because the formula to find the area of a triangle is A=1/2bh so in this case you would do 8•3=24 divided by 1/2 = 12

can someone help meee this is due soon T^T

Answers

Answer: x= 45

Step-by-step explanation:

answer is x=45 pretty sure

A city has an elevation of -17 meters closer to sea level than a city that has an elevation of -40 meters. Agree or Disagree? Why?

Answers

I agree because if your answer is in a negative that means, the number that is closer to zero is the greater number, ex: -23>-56.
I definitely agree with this

Every New Year's Day, Jennifer brings 13 candies for each of her grandchildren and 20 more candies for the adults to share.
Let g represent the number of Jennifer's grandchildren and c represent the total number of candies she brings.

Find the value of c when g=9.

Answers

Answer:

We can use the given information to set up a system of two equations:

c = 13g + 20

c - 13g = 20

The second equation is obtained from the first equation by subtracting 13g from both sides.

To solve this system, we can use substitution.

First, we solve the second equation for c.

c = 20 + 13g

Then, we substitute this expression for c into the first equation.

20 + 13g = 13g + 20

Then, we simplify.

20 = 20

So, the value of c when g = 9 is 20 + 13 * 9 = 20 + 117 = 137.

Step-by-step explanation:

C=137 because if you use the equation 13(7) + 20 you will get 137 candies.

remake of the last one and pls double check

Answers

Answer:
17 1/4

Step by step explanation:
12 1/4= 49/4
5 whole=5/1
(49x1)+(5x4)
4x1
= 49+20

4
69
=4

Monica has a triangular piece of fabric. The height of the triangle is 15 inches and the triangle's base is 6 inches. Monica says that the area of the fabric is 90 square inches. What error did Monica make? Explain your answer

Answers

Answer:

the formula is base × height ÷ 2, 15×6=90. 90÷2=45, 45 is the answer, she forgot to divide it by 2

Step-by-step explanation:

I hope this helps..

Answer:

Monica forgot to divide by 2

b=6

h=15

area = 1/2xbxh

substitute value = area = 1/2x6x15

evaluate area = 45

She did not divide the area by 2 as required in the equation

Find the difference: 2w+3-(4w+4)

Answers

Answer:

The answer is -w - 1

Step-by-step explanation:

2w + 3 - (4w + 4)

2w + 3 - 4w - 4

2w - 4w + 3 - 4 = -w - 1

Thus, The answer is -w - 1

-TheUnknownScientist

2w +3 -4w -4
The answer is
-2w-1
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