Mathematics Middle School

Given the system of the following two linear equations:

Equation 1: 12x - 2y= -1

Equation 2: 4x + 6y= -4

What would be the first step in eliminating the variable y?

A. Add the 2 equations

B. Multiply the second equation by 4

C. Multiply the first equation by 3

D. Subtract the 2 equations

Answers

Answer 1

Answer:

option C

Step-by-step explanation:

multiple the second equation by 3

hope it helps

Answer 2

Answer:

Step-by-step explanation:

Equation 1: 12x - 2y= -1 Equation 2 .

Related Questions

Answer correct please

Answers

The answer is B, trust im a math teacher :p
The answer is b it’s correct

steven feeds his rabbit 2.4 pounds of food each week. How many weeks will a bag of food last. pls give a good explanation and also the rabbit food bag is 8.4

Answers

3 and a half weeks!

Is 3 3/4 in its simplest form?

Please put its simplest form if it has a simplest form

Answers

Answer:

that is the simplist form 3 3/34

Step-by-step explanation:

It’s simplest form, because it’s simplified all the way

PLS PSLS HELP HELP !

Answers

I’m pretty sure it is B

A cookie jar contains 6 sugar cookies, 4 lemon cookies, and 2 chocolate cookies. Anne randomly chooses 1 sugar cookie from the jar, replaces it, then chooses a chocolate cookie.

1/11

1/12

8/23

1/3

Answers

Answer:

B. 1/12

Step-by-step explanation:

If you wouldn't mind giving me brainliest, i'm just trying to rank up.

Russell is filling a cylinder-shaped swimming pool that has a diameter of 20 feet. He fills it with water to a depth of 3 feet. What is the volume of the water in the pool, to the nearest cubic foot?
377 cubic feet

942 cubic feet

2958 cubic feet

3768 cubic feet

Answers

Answer:

V = 942.6 (or if rounded 942) cubic feet

The answer is 942 cubic feet

um does anyone know the answer

Answers

answer is -8.4. welcome

kakegurui Masho! :')

Answers

Answer:

EEEEEEEEEEEE

Step-by-step explanation:

Answer:

yasssssssssss♡´･ᴗ･`♡. (^.^)

Translate the phrase into an algebraic expression.
The product of 8 and x

Answers

Answer:

8x = ____

Step-by-step explanation:

you could also do:

8 × x = _____

hope this helps :)

8 + x = 8x

Step-by-step explanation:

this is the answer

I really need help with this, please help

Answers

I sent a link to u that shows the answer to this question:)))
They are alternate interior angles
It’s the same angle degrees

If i have a 3.64 as my grade average and the teacher give out 2 homework assignments and i dont do one of them. So i get an 0.00. But i do the other one and i get a 4.00. What would my grade average be. If homework is worth 30% of my grade.

Answers

Answer:

3.8

Step-by-step explanation:

3.8 I really hope this help and that it’s written that you can do it

so this is a rlly important question wht would u say easter colors is like red ect.

Answers

Answer:

these  

Step-by-step explanation:

green, baby blue, yellow, and pink

pls do this ty
During the summer, Matthew and Devan started their own business mowing lawns for people in the Lake Section. Before starting any work, Matthew spends $15 to fill up the gas tank for the lawnmower. The boys agree that each person will earn the same amount after Matthew is reimbursed the money he spent for gas. After a week of work, the boys earn a total of $243. Matthew filled up the gas tank just once.

Write an equation to represent the situation.

Answers

Answer:  2x + 15 = 243

                         x = $114

Step-by-step explanation:

Gas Tank: $15

Matthew: x

Devin: x

Gas Tank + Matthew + Devin = Total

      15      +       x        +     x    =  243

                                        2x   =  228

                                          x   =   114

During his visit to London, George Orwell decided to ask everyone he talked to whether or not the cameras made them feel more secure. He found that 5/7 of the people he surveyed said that the cameras did make them feel more secure.

a. If 60 people said that the cameras made them feel secure, then how many people did Orwell survey in all?

b. Explain how you found your answer

Answers

Answer:

51

Step-by-step explanation:

60 divided by 5/7 then you get your anser

The correct answer is 51

What is the slope of the line through the points (2, 5) and (6, 13)?

Answers

Answer:

The slope of the line that passes through that point is 2.

Step-by-step explanation:

plz mark me brainliest

Answer:

2 is the answer of the question

Make a number line and show all values of x. x≤2 and x< -5

Answers

Answer:

X<-5

Step-by-step explanation:

X has to be <-5 and <=2

If you draw a number line, you can see clearly that - 5 become first than 2.

If the condition is that it has x≤2 and x< -5, you don't take the values between - 5 and 2, cause the 2nd condition makes the result ]-infinity;-5[

I don’t know the answer but I need the points I’m sorry

Mika invested $140. She earned simple interest of 3% per year on the initial investment. If no money was added or removed from the investment, what was the amount of interest Mika received at the end of two years?

Answers

Answer:

$8.40

Step-by-step explanation:

The correct answers is 8.5 dollar

you are given 2 supplementary angles.one has a measure of 4x and the other has a measure of 8x. what is x?

Answers

Answer:

x=15

Step-by-step explanation:

Supplementary angles are two angles that equal the sum of 180 degrees.

Take 4x and 8x and make it equal to 180

4x+8x=180

Add like terms:

12x=180

Divide:

x=15

To check:

Plug in 15 to both expressions

4(15)=60

8(15)=120

Add them up and they equal 180 degrees

Hope this helps! :)

x=15 kiddo djdidn edmonds did d did disks disk did die dish s says ab

HELP ASAP PLS! math, multiple choice!! ALL THAT R CORECT

Answers

The third and fourth one are correct

Answer:

The 1st, 2nd, and 3rd are correct.

Step-by-step explanation:

The dimensions are in fact 3*2*2 1/2. If you count it up, that is correct.

The volume is 15 cubic inches. The answer to 3*2*2 1/2 is 15.

The third is given. If you double the size of each unit, you double the size of the prism.

Hope that this helps!

Isosceles Right Triangle (missing sides)

Answers

x= 8.49 meters. x2+x2=12 2. find the 12 squared and divide by 2 i think
Yes that is right answer

Can someone pls help!!

Answers

Answer:

the first one is triangular prism. the second blank is rectangular pyrimid.

Step-by-step explanation:

the rectangular one makes a pyrimid. visualise what it is describing to you it will help.

help with 13,14,15 plsss

Answers

Answer:

Step-by-step explanatio

for 13: A

for 14: Step 1: Recall the definition of an outlier as any value in a data set that is greater than or less than . Step 2: Calculate the IQR, which is the third quartile minus the first quartile, or . ... \displaystyle Q3+1.5*IQR= 89 + 1.5*10 = 104. In the data set, 105 > 104, so it is an outlier.

for 15: not sure at all sorry

13. B) Non-linear

As per its definition, linear means line. If a function is linear, then one can plot it out, and the resulting graph will be a line. This is not the case for the given function, therefore, it is non-linear.

14. A) Yes

An outlier is a data point that does not fit in with the result. It is not in the general region that the rest of the data points fall in. In the given function, the point (0.5, 3) is not in the general region that the rest of the points are in, therefore, it is an outlier.

15. B) Yes, there seems to be two distinct groups of data.

As one can see there appears two be two groups of data. One of them is towards the upper left corner, whereas the other seems to be towards the lower right corner.

Statistics Practice Q4


A. $13

B. $8

C. $30

D. $32

Answers

I believe the answer is C
the correct answer is C = $30

2⁄3 + 1⁄6 + 2⁄8 = ??

Answers

Answer:

a

Step-by-step explanation:

use ur brain

Answer:

I whole 1/12

Step-by-step explanation:

2/3+1/6+2/8

= 16/24+4/24+6/24 = 26/24 = 1 whole 2/24

= I whole 1/12

( I hope this was helpful) >;D

The pattern 10, 12, 14, 16, ________ follows the rule add two. What is the next number in the pattern?
Question 1 options:

18

19

20

21

Answers

Answer:

18

Step-by-step explanation:

I did maths I did maths I did maths I did maths I did maths

Answer:

18

Step-by-step explanation:

10+2=12 by following the rule with the next numbers 12+2= 14 then 14+2=16 and then finally 16+2=18

How do I solve this: 180° − (45° + 90°)?

Answers

Answer:

180-(45+90)

Step-by-step explanation:

180-(135)

45

Answer is 45

Answer:

45°

Step-by-step explanation:

→ First solve the values within the brackets

45° + 90° = 135°

→ Resubstitute back

180° - 135°

→ Solve

45°

The distance that a object covered in time was measured and recorded in the table. What equation would describe this motion?
y = 2x
y = 4x + 2.5
y = 4x + 4
y = 1.5x + 4.0

Answers

Answer:y = 1.5x + 4.0

Step-by-step explanation:

This is because the equation relates the distance traveled (y) to the time elapsed (x) through a linear relationship with a slope of 1.5, which represents the object's speed in meters per second, and a y-intercept of 4.0 meters, which represents the initial position of the object at time zero.

I'm pretty sure.

The equation that describes the motion of the object is y = 2x (option a)

Let's calculate the slope (m) using the values from the table. We take any two points (x₁, y₁) and (x₂, y₂) from the table:

(x₁, y₁) = (1, 2.0)

(x₂, y₂) = (5, 10.0)

The slope (m) is given by:

m = (y₂ - y₁) / (x₂ - x₁)

m = (10.0 - 2.0) / (5 - 1)

m = 8.0 / 4

m = 2.0

Now that we have the slope (m), we can determine the equation:

y = mx + b

Using one of the points from the table (1, 2.0) and the calculated slope (m = 2.0), we can solve for the y-intercept (b):

2.0 = 2.0 * 1 + b

2.0 = 2.0 + b

b = 2.0 - 2.0

b = 0

So, the Answer is option (a) y = 2x

To know more about equation here

https://brainly.com/question/21835898

#SPJ2

HELP PLEASE, I'LL GIVE BRAINLIEST (I think I spelled that wrong)

Answers

Answer:

the answer is 32

Step-by-step explanation:

the sum of angles in a triangle is 180° and if we subtract 116 from that we get 64. now since the sides of the triangle are the same we need to divide 64 with 2 and we get 32

Answer:

32 degrees

Step-by-step explanation:

So, based on the side lengths, the triangle is isosceles since two of the sides are of equal length. So, in isosceles triangles the two base angles are congruent. If there are 180 degrees in a triangle, then 180-116 would be the sum of the remaining base angles in the triangle.

180-116=64

So, divide 64 by 2 since the two angles are equal and have a sum of 64

So, x would be 32 degrees

how much is a $450 snowboard with 7.25% sales tax

Answers

3.045
I did 450*7.25%=30.45
Moved the decimal
=3.045

I need you guys to show work too please one by one make sure to answer every single one also this is apart of them from my homework packet so please make your answer count

Answers

1. 0.3z-13-4z+6.7
0.3-4z=-3.7z
-13+6.7=-6.3
simplified- -3.7z-6.3

2. 3x+1+6x-2+3x+1+6x-2= 18x-2

3. don’t know this one

4. 5(t-1.25) = 8.75
5t-6.25=8.75
5t=8.75+6.25
5t=15.00
t=3
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