Mathematics Middle School

1) Answer two questions from system A and B
System A=
8x-3y=0
2x+7y=3

System B=
8x-3y=0
8x+28y=12

A. Replace one equation with a multiple of itself
B. Replace one equation with a multiple of the other equation
C. Replace one equation with itself where the same quantity is added to both sides
D. Replace one equation with itself where a quantity is added to only one side

2) Based on the previous answer, are the systems equivalent? In other words, do they have the same solution?

A. Yes
B. NO

Answers

Answer 1

Answer:

ITS GONNAAAA BE A I DID THIS LAST YEAR

Step-by-step explanation:

Related Questions

which of the following is not an expression?

Answers

Answer:

3x + 4 = 7

Step-by-step explanation:

Equations contain an equal sign, but expressions only contain numbers and variables.

The expression in option A) is not an expression as it is a equation.

What are linear equations?

Linear equations help in representing the relationship between variables such as x, y, and z, and are expressed in exponents of one degree. In these linear equations, we use algebra, starting from the basics such as the addition and subtraction of algebraic expressions.

Given here, option A as 3x+4=7 thus it is an linear equation but an expression is a polynomial where there are no signs such as<,>=

Hence, Option A is the correct answer.

Learn more about Linear equations here:

https://brainly.com/question/29739212

#SPJ2

when rounding to estimate this difference, what do your do first?
ILL GIVE BRAINLIEST WHO EVER DOES IT FIRST!!!
2,125-1,025

a. round the subtraction problem to 2,000 - 1,000

b. round the subtraction problem to 2,100 - 1,010

c. subtract the digits in the ones place

Answers

i believe that it would be C , considering that the other two are incorrect

I think it’s 1 since if you want a broad answer or a bigger estimated answer you would do 2,000-1,000

Which of the following is true? (1 point)

|−4| < 3
|−4| < |3|
|−3| < −4
|−3| < |−4|

whoever is smart enough gets brainliest >:))

Answers

It’s A because |-4| = 4 and 4>3

It’s A and D

explaintion
|-4| = 4
and |-3| = 3
and 3<4

include a step by step explanation pls ty

Answers

the division problem is 7 divided by 15. this can be written as 7/15. to do this, you first know that 15 doesn't go into 7, so you add a decimal point, and make the 7 70. 15 goes into 70 4 times. 15 times 4 is 60. 70-60 is 10. 15 doesn't go into 10, so you add another 0 and bring it down. 15 goes into 100 6 times. 15 times 6 is 90. 100-90 is 10. 15 doesn't go into 10, so you bring down another 0. 15 goes into 100 6 times. 15 times 6 is 90. 100-90 is 10. at this point, you can probably guess that the 6 will go on for a while. this means it is repeating. this means your answer is "a".

which expression uses the commutative property to make it easier to evaluate 1/6 • 5/7 • 18?

Answers

It’s A, Because if you do KCF (Keep Change Flip) It would be 1/6 X 7/5.

Which of the following does not have 90 as a multiple?

7
6
5
3

Answers

Answer:

Step-by-step explanation:

I don't completely understand what you were asking, but if you were counting by 7's, 91 would be after 84 instead of just 90.

Answer:

Step-by-step explanation:

7x14=91, so 1 is not a multiple of 90. Don't really understand tho, plz comment if this is not what you meant.

Jake has a shipping box with the following dimensions.

length: 12 inches
width: 4 inches
height: 8 inches

Havana has a shipping box similar to Jake's box, but each dimension is half as long.

How many times greater is the volume of Jake's box than Havana's box?

Enter your answer as a number, like this: 42
HELP PLEASEEEEEE

Answers

The volume of Jake's box is 384 cubic inches, the volume of Havana's box is 48 cubic inches. That means your answer is around 87 because 48 goes into 348 about 87 times.

Answer:

Step-by-step explanation:

12 x 4 x 8 = 384

6x4x8=192

384-192=192

Jonna mixes 1/4 of a gallon of orange juice with 1/2 of a gallon of pineapple juice to make punch. One serving is equal to 1/16 of a gallon. How many servings of punch can be made?

Answers

Yes she’s right it is 12

There can be 12 serving because 1/4 orange juice and 2/4 pineapple juice would be equivalent to 3/4 of a gallon

PLEASE HELP ME SOLVE THIS!
-2.7f+0.7f-16-6

Answers

Answer:

-2.4f - 21

Step-by-step explanation:

please mark brainliest

-2.7 + 0.7- 16 - 6= -24

m – 4.21 = 87.654
What is the value of m?

Answers

add 4.21 to both side

m=91.864

Hope this helps!!

Answer:

M = 91.864

Step-by-step explanation:

87.654 + 4.21 = 91.864

[tex]87.654\\+4.210\\\\----\\\\91.864[/tex]

hope this helped.

Ramona went to a theme park during spring break. She was there for 6 hours and rode 12 rides. At what rate did Ramona ride rides in rides per hour?

Answers

Answer:

2 rides per hour

Step-by-step explanation:

2 per hour because she was there 6 hours so if you divide 12 by 6 you get two

Abby is painting two cubes for an art project.
Cube 1: side length = 3 feet
Cube 2: side length = 2 feet
The surface area of a cube is 6s2, where s is the length of one side.
Find the total surface area that Abby will paint.
1. Find the surface area of cube 1. Show your work, and include units with your answer.
2. Find the surface area of cube 2. Show your work, and include units with your answer.
3. What is the total area Abby will paint?

Answers

Answer:

54 sq ft, 24 sq ft, 78 sq ft

Step-by-step explanation:

1. Each side of cube 1 is 3 feet x 3 feet, so each side has an area of 9 square feet. Multiply by 6 sides and the area is 54 square feet.

2. Each side is 2 feet x 2 feet so the area of one side is 4 square feet. Multiply by 6 sides and the area is 24 square feet.

3. 54 + 24 = 78 square feet

6 I am most definitely wrong

Solve for x:
x³=23

Choose all that apply:

∛23

3

1

23/3

Answers

your answer is A. I have attached a photo of an explanation

Answer:

A and D. [tex]\sqrt[3]{23}[/tex] and 23/3.

Step-by-step explanation:

That exponent on the x works for A, and division also works for D.

hope this helped.

plz let me know if I am wrong.

Stella paid $75 to eat at a fancy restaurant. If she tips her waiter 20%, what is her total bill?

Answers

Answer:

Her total bill is $90

stellas total bill is 90$

Which expression is equivalent to (x+3)+y?
A: x+(3+y)
B: x(3+y)
C: (x+3)+(x+y)
D: (x+3)+(3+y)

Answers

Answer:

Step-by-step explanation:

i dont know. i think rhis is my guess. just tell me the answer

It’s A
x+(3+y) i dont know I just guessed

Students on the softball team earned $295 from a car wash. How many team banners can they buy if each banner costs $8? Explain how you interpreted the remainder.

Answers

Answer:

37 banners (Or 36 since it would cause 1 dollar off.)

Step-by-step explanation:

The reason why the teams would be able to buy this much is because if we divide 8 and 295, to which it would give the number 36.

round the number 36.875 you can round them up 37

Tyler buys packs of Pokemon cards. His spending can be represented by the equation C = 0.5p, where C is the cost of his purchase and p is the number of packs he buys.

Create a graph that represents Tyler's spending

Answers

Answer:

Step-by-step explanation:

Awnser : 5

Step by step explanation

The number 3 is the common factor of A. 9 and 15 B. 6 and 10 C. 8 and 12

Answers

Answer:

It is a common factor of 9 and 15, so A

Answer: I would say A

Step-by-step explanation: 3x3 is 9 5x3 = 15

I need help, thanks in advanced ...

Answers

He should buy 5 blue ones and 6 green ones, in total 11! Hoped I helped u!

The table shows the numbers of home runs a baseball player0 hit during spring training and during the regular season for four years. How many home runs would the player likely have hit during the regular season with 3 home runs hit during spring training? Spring Training Regular Season 2 8 4 4 5 20 6 24

Answers

Answer:

12 home runs

Step-by-step explanation:

Solve this worth 15 points

Answers

Answer:

1×10^8

Step-by-step explanation:

First, multiply 1 million by 100 because 1 dollar is worth one hundred pennies. In total, it takes 100000000 pennies for 1 million dollars. Then, because there are 8 zeros, it would be 1 times 10 to the 8th power.

1x10^8 (i think so im rlly bad at math lol)

what is 1+1-1
its a test and its impossible to solve

Answers

Answer:

Step-by-step explanation:

lol its 1 cool question

F(x) = 6 (1/8)^x is an example of

An exponential growth function
A logarithmic growth function
An exponential decay function
A logarithmic decay function

Answers

Answer:

Exponential decay. Your growth factor is 1/8, which is between 0 and 1. Thus, the value is decreasing exponentially.

If the growth factor is greater than 1, you have exponential growth. Logarithmic functions will always contain a logarithm, so you can quickly rule out those options.

Step-by-step explanation:

helpppppppppppppppppppppppppppppppppppppppppppp

Answers

Answer:

I think it should be [tex]24x^{2}[/tex]

Step-by-step explanation:

When the question said area of the cube, I think it was supposed to be surface area, which would [tex]6a^{2}[/tex] where a is the length of one edge. Given that the length of one edge is 2x, we would plug in 2x to the equation to get[tex]6*(2x)^{2}[/tex] which would become [tex]24x^{2}[/tex].

I need help with this

Answers

Step-by-step explanation:

I think the answer should be C

Answer: A

(2, -4) and (0,4);

x, y x, y

A. y = -4x +4; substitute the pairs

(2,-4)

-4 = -4(2) + 4 = -4; -4 = -4

(0,4)

4 = -4(0) + 4 = 4; 4 = 4

B. y = -4x - 4

(2, -4)

-4 = -4(2) - 4 = -12; -12 ≠ -4

(0,4)

4 = -4(0) - 4 = -4; -4 ≠ 4

C. y = 4x - 4

(2, -4)

-4 = 4(2) - 4 = 4; 4 ≠ -4

(0,4)

4 = 4(0) - 4 = -4; -4 ≠ 4

D. y = 4x + 4

(2, -4)

-4 = 4(2) + 4 = 12; 12 ≠ -4

(0,4)

4 = 4(0) + 4 = 4; 4 = 4

Answer A works out for both ordered pairs.

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