A rectangle desktop has a length of 3(x+2) units and a width of (x-7). Write an expression for the area

Answers

Answer 1

Answer:

Expression for area = 3x² - 15x - 42

Step-by-step explanation:

Given that:

Length of rectangle desktop = 3(x+2) = 3x+6 units

Width of rectangle desktop = x - 7

Area of rectangle desktop = Length * Width

Area of desktop = (3x+6)(x-7)

Area = 3x(x-7) +6(x-7)

Area = 3x² - 21x + 6x - 42

Area = 3x² - 15x - 42

Hence,

Expression for area = 3x² - 15x - 42


Related Questions

what value of x makes this equetion true -90=-100+x

Answers

Answer:

-190

Step-by-step explanation:

100+(-190)=-90

hope this is correct! c:

Today is Kate's birthday. She has 3/4 of a cake. She wants to cut the cake into 1/12 sized pieces. How many slices of cake will she have?

Answers

What we know

We know that Kate has 3/4 of a cake. She wants to cut the cake into 1/12 sized pieces.

What we need to know

We need to know how many slices of cake will she have?

Show your work

If Kate wants to cut 3/4 of her cake into 1/12 sized pieces, that would mean 1/4 of the whole cake is 12/12. If there are 3 of the 1/4 slices, then we would need to find out how much that is in twelfths by multiplying:

12 x 4 = 48

36/48 is equal to 3/4. If she is having 3/4, she is having 36 slices.

Check your work

To check our work we divide:

48 ÷ 12 = 4

Answer

Kate will have 36 slices of cake.

#LearnWithBrainly

https://brainly.com/question/21087460

rtyukiuytrewdsfghyutrytegd

Answers

Answer:

huh cool

Step-by-step explanation:

Answer:

Ummm What???

Step-by-step explanation:

DBZ
1.
2.
3.
$90
9000!!!!

Answers

Answer:

dragon ball z sha la a sha la

Step-by-step explanation:

IT'S OVER 9000!!!!!

Step-by-step explanation:

(7 to the power of 2 + 11) divided by 5

Answers

Answer:

(7^2+11)/5

=(49+11)/5

=60/5

=12

Answer:

Answer is 65

Step-by-step explanation:

Take 7 to the power of two and do 7x7 and whatever answer you get add it to 11 so do 49+11 and then whatever answer you get add it to 5, so 60+5

Hope that helps

Tieisiaoskakaakkaakakskskskkssksksksjkw

Answers

Answer:

??????????????????????

Sorry, it’s very blurry. I can barely see or read anything :(

I need the answer for the bottom ones please :) I’ll give brainliest

Answers

Answer:

y = 4/5x

y = 4/5x - 3.2

Step-by-step explanation:

The equation for slope is y=mx+b, the mx stands for the slope which is 4/5x. The b stands for where the line goes through the y axis, in this equation the first line crosses the y axis at the origin (0) and the second one crosses at -3.2, these are also called y-intercepts because they intercept the y axis.

I hope this helps, gl!

Evaluate to determine f(2) if f(x) = 3 + 5x²

Answers

Answer:

f(2)=23

Step-by-step explanation:

If f(x) = 3 + 5x², then f(2) = 3 + 5(2)² = 3 + 5(4) = 3 + 20 = 23

So f(2)=23

will mark brainiest

Answers

Answer:

b

Step-by-step explanation:

How can you get equation b from equation A. 3(x+2)=18 B. X+2=18

Answers

Answer:

We start with the equation:

A: 3*(x + 2) = 18

And we want to construct equation B:

B: X + 2 = 18

where I suppose that X is different than x.

Because in both equations the right side is the same thing, then the left side also should be the same thing, this means that:

3*(x + 2) = X + 2

Now we can isolate the variable x.

(x + 2) = (X + 2)/3

x = (X + 2)/3 - 2

Then we need to replace x by  (X + 2)/3 - 2 in equation A, and we will get equation B.

Let's do it:

A: 3*(x + 2) = 18

Now we can replace x by =  (X + 2)/3 - 2

3*( (X + 2)/3 - 2 + 2) = 18

3*(  (X + 2)/3 ) = 18

3*(X + 2)/3 = 18

(X + 2) = 18

Which is equation B.

At 8:00 am the temperature in Aspen was 18º. By 1:00 p.m., the temperature had dropped 4º per hour. What is the temperature at 1:00 p.m.?

Answers

Answer:

-2

Step-by-step explanation:

7
A) Not enough information
B) SAS
C) ASA
D) AAS

Answers

the answer should be C) ASA it’s what the answer was when i took the test. mb if im wrong

Every kid in Mr. Levans's 3rd grade class made a valentine for every kid in the class, including themselves. If the class made a total of $484$ valentines, how many kids are in the class?

Pls tell me and why it is correct I will mark you brainliest!! (20 POINTS!!)

Answers

Answer:

22

Step-by-step explanation:

So the number of valentines made is going to equal the number of kids * the number of kids, so all you have to do is the square root of 484.

This is 22, because 22 * 22 = 484.

Answer:

22

Step-by-step explanation:

What will be the result if the y-intercept of the line shown is changed to an 8, but the slope remains the same? Select one option from each
set to complete the sentence.

The line will be translated [ 0/2/6/8] units [up/down/left/right]

Answers

Answer:2 down

Step-by-step explanation:

y-intercept is on 10 so if it said that it changed to 8 u subtract 2 which means it goes down

The graph goes approx 2 points down if the y-intercept of the line shown is changed to an 8,

What are Intercepts of a line ?

Every linear equation can be represented by a unique line that shows all the solutions of the equation.

We have seen that when graphing a line by plotting points, you can use any three solutions to graph.

This means that two people graphing the line might use different sets of three points.

One way to recognize that they are indeed the same line is to look at where the line crosses the x– axis and the y– axis. These points are called the intercepts of the line.

The points where a line crosses the x– axis and the y– axis are called the intercepts of a line.

The graph has been attached with this answer which shows for the same slope if the y-intercept of the line shown is changed to an 8 what happens.

To know more about Intercept

https://brainly.com/question/14180189

#SPJ2

The tape diagram represents an equation.
17
4
k
Find the value of k that makes the equation true.

Answers

Answer: 13

Step-by-step explanation:  umm i dont know how to explanation

help I will give brainiest​

Answers

Answer:

A

Step-by-step explanation:

-2,4

Answer:

Option A (-2,4)

Step-by-step explanation:

It is where the lines intersect

Hope this helped, have a nice day! :)

3 3/5 x (-8 1/3) =
A. -30
B. 4 3/5
C. 8 4/5
D. -24

Answers

Answer:

A) -30

Step-by-step explanation:

2(x + z) - y
Help please

Answers

Answer:

2x+2z-y

Step-by-step explanation:

You distribute the 2 to the parenthesis. Then you get 2x+2z-y.

Answer:

2x−y+2z

Step-by-step explanation:

2(x + z) - y

2(x) (2) (z) - y

2x−y+2z

Find the sun of NOM
PLEASE HURRY
Answer choice D: 4/5 since u can’t see it sorry

Answers

Answer:

C

Step-by-step explanation:

Firstly, the triangle we are considering is triangle NOM

Now, the angle we are considering on this triangle is the angle O

mathematically, the sine of an angle is the ratio of the length of the opposite to the length of the hypotenuse of the angle

In this case, the hypotenuse of the angle is the sum of the squares of the two other sides according to Pythagoras’ theorem

Thus, the hypotenuse of the NOM triangle will be;

square root of 3^2 + 4^2 = square root of 25 = 5

The opposite of the angle we are considering is angle M which is 3

So, the sine of the angle we are considering is 3/5

Mr.Miller spends an hour and a half working in his garden . Which number line can show the time he spends working in his garden ?

Answers

Answer:

Top left because its 3:15-4:45

Step-by-step explanation:

Answer:

the top left one

Step-by-step explanation:

each line represents 15 minutes

it starts at 3:15 and end at 4:45 and there is a 1 and a half hour difference between these two times

HELP PLEASE 30 POINTS! WILL MARK BRAINLIEST IF CORRECT!!!!!

Verify the identity. & Show your work.

cos (x - y) - cos (x + y) = 2 sin x sin y

Answers

Answer:

this is a required answer.

Answer:

See Below.

Step-by-step explanation:

We want to verify:

[tex]\cos(x-y)-\cos(x+y)=2\sin(x)\sin(y)[/tex]

We will utilize the following identities:

[tex]\cos(x-y)=\cos(x)\cos(y)+\sin(x)\sin(y)[/tex]

And:

[tex]\cos(x+y)=\cos(x)\cos(y)-\sin(x)\sin(y)[/tex]

So, by substitution, we acquire:

[tex](\cos(x)\cos(y)+\sin(x)\sin(y))-(\cos(x)\cos(y)-\sin(x)\sin(y))=2\sin(x)\sin(y)[/tex]

Distribute:

[tex]\cos(x)\cos(y)+\sin(x)\sin(y)-\cos(x)\cos(y)+\sin(x)\sin(y)=2\sin(x)\sin(y)[/tex]

The first and third term will cancel:

[tex]\sin(x)\sin(y)+\sin(x)\sin(y)=2\sin(x)\sin(y)[/tex]

Combine like terms:

[tex]2\sin(x)\sin(y)\stackrel{\checkmark}{=}2\sin(x)\sin(y)[/tex]

Determine the permanent life insurance amount per thousand given that the policy belongs to a healthy 27-year-old female with an annual premium of $2,441.53 and a face value of $91,000 on a 20-Payment life insurance policy. A. $25.04 c. $25.96 b. $26.83 d. $27.54

Answers

Answer:

The answer is B

Step-by-step explanation:

b.

$26.83

In The Secret Garden, how does Mary respond when she first meets Martha?

She immediately decides that she hates her.

She doesn't understand why Martha won't cater to her every whim.

She tells Martha that she will need her to also be her playmate.

She finds that Martha treats her just like her Ayah did back in India.

Answers

Answer:

The answer is: She doesn't understand why Martha wont cater to her ever whim

Step-by-step explanation:

I read the book :)

The answer is: "She doesn't understand why Martha won't cater to her every whim."

Step-by-step explanation:

I read the book and this is the obvious answer, plus I just took the test and got it right.

(Multiple choice)
Can I please have some help with this question, I will reward most Brainly to who ever gets it correct.

Answers

I believe the answer is A

Madison is making a place mat. She divides it into 6 equal parts to colors. What is the name for the parts?

Answers

Answer:

6

Step-by-step explanation:

Based on the information given if She divided the place mat into 6 equal parts to color the name for the parts will be the 6 parts she divided to color reason been that division or separation of the place mat into 6 equal Parts to color means that the place mat that was divided by Madison into 6 equal parts have the same size or equal size .

Therefore the name for the parts will be 6.

When we divide a shape with each part has same size then all the parts are called as equal parts of a whole. Thus the name of equal parts of the mat made by the Madison is sixths.

Equal parts of a whole-

When we divide a shape with each part has same size then all the parts are called as equal parts of a whole.

For example, a shape is divided into two equal parts then the name of the equal parts is halves. If  a shape is divided into three equal parts then the name of the equal parts is thirds.

Here in the question, given-

The mad made by the Madison has 6 part.

The size and shape of each part is same.

When Madison divides the mat in 6 equal part of this mat than each part will have 1/6 part mat of the original size mat. As by the definition of the equal parts of a whole we can conclude that if a shape is divided into 6 equal parts then the name for the parts is sixths.

Hence, the name of equal parts of the mat made by the Madison is sixths.

For more about the fraction, follow the link given below-

https://brainly.com/question/1301963

help. me. plzzzzzzzz

Answers

Answer:

0.38

hope it's helpful ❤❤❤

THANK YOU.

Evaluate using the values given.
9-([p] - m); use m= 7, p = 2, and q = -3

Answers

Answer: 14

Step-by-step explanation:

9-(2-7)

9-(-5)

14

A state park charges $6.00 entry fee plus $7.50 per night of camping. Write an algebra expression for the cost in dollars of entering the park and the camping for n night

Answers

Answer:

C=$7.50n + $6

Step-by-step explanation:

-1 + 4 + 9 + ... + 34 sequences

Answers

Answer:

22

Step-by-step explanation:

-1+4+9=12-34

-0 25+ 1 75 <-1 75+ 2 25x

Answers

Answer:

x > 1.00

Step-by-step explanation:

1.50 < 0.50x

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