Mathematics Middle School

Is there an easy way to solve (5x - 8y +7z) + (6y - 4x - 3z)???

I'll mark you as brainliest if you help me

Translation to French/Francais
Existe-t-il un moyen facile de résoudre (5x - 8y + 7z) + (6y - 4x - 3z) ???

Je te marquerai comme le plus intelligent si tu m'aides

Translation to Russian
Есть ли простой способ решить (5x - 8y + 7z) + (6y - 4x - 3z) ???

Я отмечу тебя как самого умного, если ты поможешь мне
Translation to Tamil
(5x - 8y + 7z) + (6y - 4x - 3z) தீர்க்க எளிதான வழி இருக்கிறதா ???

நீங்கள் எனக்கு உதவி செய்தால் நான் உங்களை மூளையாகக் குறிப்பேன்

Answers

Answer 1

______________________________

Hey!!

Solution,

(5x-8y+7z)+(6y-4x-3z)

= 5x-8y+7z+6y-4x-3z

= 5x-4x-8y+6y+7z-3z

= x-2y+4z

Hope it helps..

Good luck on your assignment

_____________________________

Related Questions

Predict the cost of a meal for a family of four between $50.00 and $100.00. Be sure to include dollars and cents.

Part A: If the family has a 15%-off coupon, calculate the new price of the meal. Show all work or explain your steps. (2 points)

Part B: Calculate a 20% tip using the new price. What is the final cost of the meal? Show all work or explain your steps. (2 points)

Answers

Answer:

$51

Step-by-step explanation:

lets say 50, so 15% of 50 is 42.5 and + 20% for tip which is $51

The answer would be $51

Can someone help on Question C?

Can someone help on Question C?

Answers

It's - b + a

Because we're going down the arrow on b or the opposite direction of b. Then, up to C where its vector is a as it lies half way on AC with half of the line labelled a. So, the other half must be also a.

Hope this helps!

It’s b and a, hope this helps have a nice day! ;)

PLEASE HELP QUICKLY!

PLEASE HELP QUICKLY!

Answers

Answer:

Just see the explanation and you will understand

Step-by-step explanation:

To find the area of the fountain, we need to add up the areas of the two semicircles and the quarter circle: Area = πr^2/2 + πr^2/2 + πr^2/4 Area = (5π^2/2 + 5π^2/2 + π^2/4)/π^2 Area = 21/4 Using a calculator, we can approximate this as about 5.25 square feet.

5.25 ft approximately

Amber and Jessica go out for lunch. Amber’s lunch costs $11.70, and she tips 18%. Jessica’s lunch costs $12.30, and she tips 15%. Complete a true statement.
jessica paid [ 0.29 / 0.32 / 0.55 ] , [ more/ less ] than amber at lunch

Answers

Jessica paid more than Amber at lunch.

To find out, we first need to calculate the amount of tip each person left:

Amber's tip = 11.70 x 0.18 = $2.11

Jessica's tip = 12.30 x 0.15 = $1.85

Then we add the cost of the lunch and the tip for each person:

Amber's total cost = 11.70 + 2.11 = $13.81

Jessica's total cost = 12.30 + 1.85 = $14.15

So Jessica paid $0.34 more than Amber for lunch.

Mai selects a letter at random from the alphabet. What is the probability she selects the letter “K”? SHOW YOUR WORK.

Answers

Answer:

1/26 or about 3.8%.

Step-by-step explanation:

There are 26 letters in the alphabet, and only one of them is the letter "K". Which means the probability would be 1/26. In percent form, that is about 3.8%.

In how many different ways can 2/15 be represented as 1/a + 1/b, if a and b are positive integers with a => b?

Answers

Answer:

1/8  + 1 / 120    = 2/15

1/9  +  1 / 45     = 2/15

1/10  +  1 / 30   = 2/15

1/12  +  1 / 20   = 2/15

1/15  +  1/15     = 2/15

Mr. Calloway has a rectangular yard that is 120 feet wide and 80 feet deep. To keep his dogs on his property, he needs to build a fence. How much fencing does he need?


A. 200 ft
B. 36 ft
C. 400 ft
D. 480 ft

Mr. Calloway has a rectangular yard that is 120 feet wide and 80 feet deep. To keep his dogs on his property,

Answers

Answer:

C. 400 ft

Step-by-step explanation:

120 + 120 = 240. I do this to find the length sides of perimeterI can say that the depth, 80, is also the width. So, 80 + 80 = 160160 + 240 = 400. I do this to find the perimeterTherefore, 400 is the answer.
200 aka A is the answer

If two people are going to a resturaunt and they both order chicken how much money did they spend? (The chicken is $15 and the price is 13% off)

Answers

The answer is 13.05$ is what you’ll be paying hope this helps
$13.05 is the answer

What is the Greatest Common Factor of 8 and 76?


Be sure to show your work or explain your process

Answers

The greatest common factor is 4.

You can’t divide 76 by 8 to get a whole number.
The next number that 8 can be divided by is 4.
8/4 = 2
76/4 = 19

Answer:

2|8,76

2|4,38

  |2,19

2 and 19 cannot be further divided

Therefore, G.C.F of 8 and 76=2*2=4

vEASONING Consider the stem-and-leaf plot shown.

Stem Leaf
0 2 3
1
2 1 6
3 0 4 6
4 4 5 8 8 9
Key: 4 | 8 = 48

a. How many data values are at most 10?

Number of data values:
Question 2
b. How many data values are at least 30?

Number of data values:
Question 3
c. How are the data distributed?

Answers

Answer:

5 is the answer

A. 10
B. 8
C. Skewed left

Which expression is equivalent to (9^2)^8

Which expression is equivalent to (9^2)^8

Answers

Answer:

1

-----

9^16

Step-by-step explanation:

(9^-2)^8

We know that a^b^c = a^(b*c)

9^(-2*8)

9^-16

We know that a^-b = 1/a^b

1/9^16

The following sample space could represent which repeated experiment?

S: {BY, YB, BB, YY}

Flipping a fair coin once
Rolling a number cube twice
Spinning a spinner once with 2 equal sections colored blue and yellow
Spinning a spinner twice with 2 equal sections colored blue and yellow

Answers

If your flipping a coin only once u can’t do it twice so that is wrong I think it is spinning once with 2 equal sections colored blue and yellow because there are 2 chances of landing on blue or yellow

Answer:

is D or last option

Spinning a spinner twice with 2 equal sections colored blue and yellow

Step-by-step explanation:

their is Y and B so 2 and 2 times 2 is 4 and theirs 4 probabilities

a plane flew 18,000 miles in 3 hours. how fast was it going?

Answers

Answer:

6,000 miles per hour

Step-by-step explanation:

18,000 divided by 3

=6,000

LCD) of 11/2 and 1/12.

Answers

Answer: 11/2

Step-by-step explanation:

11/2

Answer: The person above me is wrong the answer is 12

Anyone can help, please use the image!

Anyone can help, please use the image!

Answers

Answer:

1. 18

2. 12

3. 10%

4. 20%

Step-by-step explanation:

I NEED THIS RIGHT NOW

I NEED THIS RIGHT NOW

Answers

Answer:

x - y

Step-by-step explanation:

if x is greater than y subtraction will be the result with a positive number.

hi can anyone help me with this please ​

hi can anyone help me with this please

Answers

Answer:

Mary is adding - 2

Step-by-step explanation:

Mary is adding - 2 to - 2 but instead she is supposed to be multiplying - 2 to - 2

What is an angle that is supplementary to BEC?

What is an angle that is supplementary to BEC?

Answers

Answer:

Angle CED

Step-by-step explanation:

First find out what supplementary angles mean:

Supplementary angles are angles that add up to 180 degrees(straight angle).

Now, we have to find out what angle is supplementary to angle BEC.

We can see that the line angle BEC lies on is FD mainly, and we have to find an angle that adds to BEC which equals 180 degrees.

We can also see that angle CED is adjacent to angle BEC and lies on line FD.

When we look at angles BEC and CED, you can see that they both form a straight line(180 degrees).

So angle CED is the correct answer.

Mr. Green washed
1
4
of his laundry. His son washed
2
5
of it. How much of the laundry still needs to be washed?

(Need the answer to be in fractions)

Answers

Answer:

What was the original number??

Step-by-step explanation:

The answer is 7/20 still needs to be washed. Hope this helped!! :)

1. find the area 2.7m 12m

2. find the area 12 6ft

3. find the area 18ft 16ft

Answers

Answer:

Question 1 = 32.4ft Question 2 = 72ft Question 3  = 288ft

Step-by-step explanation:

Use multiplication.

Area= length (l) x width (w)
1- 2.7 x 12 = 32.4m
2- 12 x 6 = 72 ft
3- 18 x 16 = 288 ft

The pharmacist has a 2.8 L bottle of cough syrup. If she fills a bottle that is 1,200 ml, how many ml of cough syrup does the pharmacist have left?

160 ml
400 ml
1,600 ml
4,000 ml

Answers

Answer: 1,600 ml

Step-by-step explanation:

You can arrive at this answer by subtracting the amount of cough syrup used (1,200 ml) from the initial amount in the bottle (2.8 L, which is 2,800 ml).

2,800 ml - 1,200 ml = 1,600 ml

I hope this helps :)

Answer: 1,600 mL

Step-by-step explanation:

1. convert the 1,200 mL to L, which is 1.2 L.

2. Subtract that value from 2.8 L, equaling 1.6 L

3. Convert the 1.6 L back into mL by multiplying by 1000, which is equivalent to 1600 mL.

someone seriously needs to teach me how to do slope

someone seriously needs to teach me how to do slope

Answers

okay so the equation to slope is m= y2-y1 divided by x2-x1. it seems hard but watch khan academy
i think its 3/1 ummmm

Can someone help me with this question!!

Can someone help me with this question!!

Answers

The answer I got is somehow 5

Answer:

8

Step-by-step explanation:

area = bh/2

32.4 yd² = 8.1 yd × s / 2

s = 8 yd

Isabel is mixing paint. She mixes 2 (1/3) pints of blue paint and 4 (1/4) pints of yellow paint.

Which of the following has a ratio of blue paint to yellow paint that is proportional to the amounts used in Isabel's paint mixture?

Isabel is mixing paint. She mixes 2 (1/3) pints of blue paint and 4 (1/4) pints of yellow paint.Which

Answers

Answer: None of these are correct

Step-by-step explanation:

these are all wrong

Kenji is playing the video game Dragon Tamer, where players go on adventures finding and training dragons. In the first level of the game, he gets 10 points for finding a Silverthorn Dragon but gets –6 points when it scorches him with fire. What is Kenji's score at the end of the first level?

Answers

4 points is kenjis answer

What is the surface area of a rectangular prism with the Length being 14cm, the Width being 21cm, and the Height being 5cm?

Answers

Your welcome sorry it took me so long
What is the surface area of a rectangular prism with the Length being 14cm, the Width being 21cm, and

100×0.23 =
101×0.23 =
102×0.23 =
103×0.23 =

Answers

Answer:

100×0.23=23

101×0.23=23.23

102×0.23=23.46

103×0.23=23.69

Answer:

Step-by-step explanation:

100×0.23= Answer:23101×0.23=Answer:23.23102×0.23=Answer:23.46103×0.23=Answer:23.69

Please Hurry. I need this answer quickly please.

Please Hurry. I need this answer quickly please.

Answers

Answer:63

Step-by-step explanation:

 multiply 72 by 7 then divide i by 8

(72×7)/8

=63

It's 63.

simplify the equation 7/8×72 multiple 7×9 solution is 63

help pls me i need help with math

help pls me i need help with math

Answers

Answer:

11 yd

Step-by-step explanation:

16-5=11 yd

Answer:

missing side length is 11

Step-by-step explanation:

you subtract 16-5 because 5 i the missing length from the unknown side making it not add up tp 16

HURRY 50 POINTS
What is the height of a cylinder with a radius of 3 and a volume of 189?

Answers

Answer:

6.68 units (2 d.p.)

Step-by-step explanation:

The formula for the volume of a cylinder is:

\(\boxed{V=\pi r^2 h}\)

where:

V is the volume.r is the radius of the circular base.h is the height.

Given values:

V = 189 cubic unitsr = 3 units

To find the height of the cylinder, substitute the given values into the formula and solve for h:

\(\implies 189=\pi \cdot 3^2 \cdot h\)

\(\implies 189=9\pi \cdot h\)

\(\implies \dfrac{189}{9 \pi}=\dfrac{9\pi \cdot h}{9 \pi}\)

\(\implies \dfrac{189}{9 \pi}=h\)

\(\implies h=6.6845076...\)

Therefore, the height of a cylinder with a radius of 3 units and a volume of 189 cubic units is 6.68 units (2 d.p.).

Answer:

h≈6.68

Step-by-step explanation:

6.68 is the height of a cylinder with a radius of 3 and a volume of 189

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