Mathematics College

Which variable will you choose to eliminate? How?
8x + 3y = -7
7x + 2y = -3?

I need to show the work Can someone please help?
Thank you

Answers

Answer 1

Answer:

Variable elimination 8x+3y=-7 3y=-8x-7 y=-8/3x-7/3 Now plug it into y 7x-16/3x-14/3=-3 5/3x-14/3=-3 5/3x=5/3 x=1

Related Questions

Find the mode of the data.
1, 2, 1, 3, 3, 4, 1
The mode is

Answers

Answer:

1 is the answer.

Step-by-step explanation:

The mode of a data set is the number that occurs most frequently in the set.

A. 12/29
B. 3/5
C. 2/3
D. 20/29​

Answers

Answer:

Where is the question? The Answer is 20/29

Step-by-step explanation:

Brainiest

This figure shows an oblique triangle-based pyramid.
What is the volume of the figure?

Answers

Answer: 88 cm^3

Step-by-step explanation:

= 1/2 • bh

= 1/2 • 6 • 8

= 24

= 1/3 • 24 • 11

= 88 cm^3

The volume of the oblique triangle-based pyramid, having dimensions 6 cm, 8 cm, 11 cm, and 36.2 cm, is 88 cm³.

What is volume?

The capacity occupied by a three-dimensional solid shape is known as volume. It is difficult to visualize in any shape, yet it may be compared among shapes. For instance, a compass box has a larger volume than an eraser placed inside of it.

Given:

The dimension of the pyramid are 6 cm, 8 cm, 11 cm, and 36.2 cm,

Calculate the volume as shown below,

The Volume of the pyramid = 1 / 3 × Area of the triangle × height

The volume of the pyramid =  1 / 3 × 1 / 2 × 6 × 8 × 11

The volume of the pyramid = 528 / 6

The volume of the pyramid = 88

Thus, the volume of the pyramid is 88 cm³.

To know more about volume:

brainly.com/question/13807002

#SPJ2

Dana is playing a game where she loses 75 points every time she rolls an even number. She starts with 0 points. Then she rolls an even number on her first five rolls of the game. What number represents the amount of points Dana has after her first 5 rolls.

Answers

Answer:

-375

Step-by-step explanation:

-75 * 5

= -375.

Edgar has a bag of 10 marbles (3 green, 5 blue, and 2 red). If he picks one marble out of the bag at random, what’s the probability that he will get a blue marble? Explain how you determined that probability.

Answers

There are 5 blue marbles and 10 total marbles.

The probability of picking blue is the number of blue marbles/ total marbles.

Probability = 5/10 which reduces to 1/2

The answer is 1/2

Which figure shows a reflection of ​pre-image QRS​ over the line t?

I need help PLSSSSS 50 points!!!

Answers

The first one, it is mirroring it and if you were to fold it in half it would be the same

Which are elements and geographical skills in which can be applied in one's life as practical or professional?

Answers

Answer:

using a map is a geographical skill in everyday life.

Step-by-step explanation:

Help!!!
A) Mode
B) Mean
C) Median

Answers

Answer:

Median

Step-by-step explanation:

Median will be misleading  are not asking for the midd;e price they are asking for the average price in this case you will use mean to find

Anyone can solve this for me thx

Answers

Answer:

16

Step-by-step explanation:

Which of the following is NOT a recommended way of writing ratios?

O Two to one
O 2-1
O 2:1
O 2/1​

Answers

Answer:

Do not write ratios like so

2-1

Step-by-step explanation:

Answer:

I think it's 2:1 because of what I remember.

What’s equivalent to 3/2

Answers

Answer:

Some fractions equivalent to 3/2 are...

6/4     9/6  12/8       15/10        18/12  21/14 24/16

27/18  30/20  33/22  36/24

Answer:

6/4 or 9/6

Step-by-step explanation:

please help me answer these 2 questions, worth lots of points

Answers

For the first one, to find x, you are going to take that entire side which would equal to 180 and solve. 2x+20+55=180 would then go down to 2x+65=180 once you add the 20 and 55. Then subtract 65 to both sides and divide your final answer 115/2 which is x=57.5. For the second one it’s 4x-2+21=180, then you will subtract 2 from 21 and get 19. After you would subtract 19 by 180 and divide 4 by each side, getting x=40.25 as your final answer.

(5) 60% of a number is 36. Use this fact to find:
a) 30% of the number
b) 20% of the number.
c) 50% of the number​

Answers

Answer:

The number is 60

a) 18

b)12

c) 30

Step-by-step explanation:

A teacher is four times as old as a student. In 28 years, the student's age will be half of the teacher's age. How old are they now?
The age of the teacher is
years.
The age of the student is
years

Answers

Here, let the age of student be x and teacher be 4x after 28 years, the teacher is double the age of student. So the age of teacher will be 4x+28 and student will be 2(x+28)
So,
4x+28=2(x+28)
4x+28=2x+56
4x-2x=56-28
2x=28
x=14
Therefore the age of the teacher in present will be
=4x+28
=4*14+28
=84
And age of student will be:
=x+28
=14+28
=42
Hope this helps


a varies inversely with b. if a=9 when b=2, then find when b=6

Answers

Answer:

a[tex] \alpha [/tex]

1/b

a=k/b

k=a×b

where a=9

b=2

k=?

k=9×2

k=18

where a=?

b=6

k=18

a=k/b

a=18/6

a=3

Plz help me well mark brainliest if correct!!......

Answers

Answer:

Option C

Step-by-step explanation:

have a great Day

The answer is going to be C!

Help PLZZ NO FILES PLZZZ

Answers

Answer:

B

Step-by-step explanation:

C is 31, so we add a negative to make it the opposite.

Find the volume of this.
Show work.

Answers

Answer: 471.24 (with 3.14 as pi)

Step-by-step explanation:

Volume of cylinder = pi*r^2*height

Radius = 10/2 = 5

Pi*25^2*6 = 471.24

Determine whether the following study is an observational study or an experiment. If the study is an experiment, identify the control and treatment groups, and discuss whether single- or double-blinding is necessary. If the study is observational, state whether it is a case-control study, and if so, identify the cases and controls.
In a study of the effects of magnets on back pain, some participants were treated with magnets while others were given nonmagnetic objects with a similar appearance. The magnets did not appear to be effective in treating back pain. Choose the correct answer below.
A. Experiment, the treatment group is patients that used the magnets and the control group is patients that received the placebo; double blind
B. Observational study; case control; the cases are the patients that received magnets, the controls are the patients that received placebos
C. Observational study; not case-control
D. Experiment, the treatment group is all patients and the control group is patients that received the magnets; single blind

Answers

Answer:

A. whether a woman took hormones.

B. whether to woman in the study had a heart attack.

D. access to health care

Step-by-step explanation:

The study conducted to observe the menopausal woman must be supported with their health history. Some woman may have menopause at an early age while other go towards this at a later age. This can be due to smoking, hormone intake, severe diseases like heart attack or cancer and their routine health checkup details. There variables must be observed and included in experiment to reach a conclusion.

Solve this 6 - 4(3 - 6x) + 12x

Answers

Answer:

Step-by-step explanation:

What is the value of x?

Enter your answer in the box.

x =

Answers

Answer:

39°

Step-by-step explanation:

39+102= 141

180-141= 39

What type of data distribution is shown on the
graph? V symmetric
Coin Toss
0.6
0.4
Probability P(X)
0.2
0
0
1
2
Number of Heads: X
COMPLETE
The mean is

Answers

Answer: B, C, C

Step-by-step explanation:

The type of data distribution which is shown on the graph of coin toss where, x is the number of heads is symmetric and discrete.

What is data distribution?

The data distribution is a way to represent the values of a set of data or information. The distribution of data is generally represented in a particular order.

In the given graph, the data distribution is shown for the coin toss. The probability P(X) is shown on the y-axis of the graph, and the number of heads is shown on the x-axis.

There are two types of data distribution shown on the graph.

Symmetric - The data distribution shown on the graph is symmetric over x = 1.

Discrete - The data distribution shown on the graph is discrete because the values of X are distinct.

Hence, the type of data distribution which is shown on the graph of coin toss where, x is the number of heads is symmetric and discrete.

Learn more about the data distribution here;

brainly.com/question/25983327

#SPJ7

The complete question is attached

I need help on this!!

Study guide for exam

The circle have the same question.

No links

Answers

Answer: Picture pls

Step-by-step explanation:

.

Answer:
What’s the question

Explanation:

Plz help me well mark brainliest if correct!!....

Answers

Answer:

A. First grade boys

Answer:

First grade boys

Step-by-step explanation:

The taller the bar the more value it has and green is for boys and blue is girls.

the first green bar is the lowest so they sold the least amount

Write an equation in slope-intercept form for the following line:

(-14,1) and (13,-2)

Answers

Answer:

y=1/9x-5/9

Step-by-step explanation:

just use slope intercept to find the slope then point slope form to find the line

What is the correct answer?? I will mark as brainlest

Answers

Answer: t=0.15n

Step-by-step explanation:

PLEASE HELP ME ASP !!

Answers

Answer:

B

Step-by-step explanation:

if its a straight line, then just subtract from 180

180 - 84 = 96

EAT MY SANDWICH ANX YH

Mr. and Mrs. Doran have a genetic history such that the probability that a child being born to them with a certain trait is 2/5. If they have three children, what is the probability that exactly three of their three children will have that trait? Round your answer to the nearest thousandth.

Answers

Answer:

any details?

Step-by-step explanation:

What is the answer of 1/4x+1<5?

Answers

The answer is X< 16 I hope it Helps

Alex had 23 coins in his collection. He found 5 coins and gave Bill 8 coins. How many coins does Alex have now?

Answers

alex has 20 coins now

Answer:

alex has 20 coins since 23 + 5 - 8 = 20

step-by-step explanation:

Other Questions
Suppose an economy has two industries producing corn (c) and tractor (t). The production functions for the two industries are.Yc = min (Lc/2, Kc/1) and Yt = min (Lt/2.5, Kt/3),where Li and Ki are the amount of labor and capital used in industry i (i = c, t). Constraints for labor and capital endowments are given as follows:Lc + Lt 63 and Kc + Kt 42. Derive the production transformation curve and show the output vector (Yc, Yt) that corresponds to full employment of both factors? (10 marks) What range of output price ratio (Pc/Pt) is consistent with the full employment of both factors simultaneously? (10 marks) Read the sentence. Our puppy loves to frolic, so he will romp around the backyard for hours. Which answer choice best explains how frolic and romp are used in this sentence? They are used as synonyms to convey the idea that the puppy enjoys being playful. They are used as antonyms to convey the idea that the puppy often changes his behavior. They are used as cognates to demonstrate that the puppy is unusual. They are used as homonyms to suggest that the puppy is quite aggressive. difference between alloys and mixtures? Find the Mean of the set of data: 4. 2. 6. 8. 5. 5 The graph below shows a line of best fit for data collected on the amount of time teenagers spend on the computer andwatching television.Based on the line of best fit, how much time does a teenager spend watching television if they spend 360 minutes on thecomputer?OA. 60 minutesOB. 15 minutesOC. 30 minutesOD. 45 minutesASAP From the poem the tree in season by Robert FisherThe question:Why,do you think ,did the poet choose a tree to write a poem about seasons?Can you give me answer fast! Which expression is equivalent? help plsss :))))))) Write a function, stringify_digit that takes a single digit (integer) and returns the corre-sponding digit as a string. For example, stringify_digit(9) returns "9" and stringify_digit(0)returns "0". You may assume that only the digits 0 to 9 will be passed in as argumentsto your function. You may not use the str() function for this function. When do you use a solid line for graphing a linear inequality? 3, 2, 16, 4, 26, 8, 6,3How many dogs were in the Ridgeway Dogs show? Suppose we have two thermometers. One thermometer is very precise but is delicate and heavy (X). We have another thermometer that is much cheaper and lighter, but of unknown precision (Y). We would like to know if we can (reliably) bring the lighter thermometer with us into the field. So, we set up an experiment where we expose both thermometers to 31 different temperatures and measure the temperature with each. We get the following observations:x = 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60, 64, 68, 72, 76, 80, 84, 88, 92, 96, 100, 104, 108, 112, 116, 120y = 0.02, 3.99, 7.91, 12.03, 16.09, 20.00, 23.98, 28.09, 31.94, 36.03, 40.00, 44.05, 47.95, 52.00, 55.87, 59.90, 63.91, 67.95, 72.11, 76.02, 80.01, 84.10, 88.06, 91.74, 96.02, 99.95, 103.87, 108.01, 111.99, 116.04, 120.03We want to test if these thermometers seem to be measuring the same temperatures. Let's use the threshold.(a) Write down the appropriate hypothesis tests for 1.H0: 1( / = / > / / / / A recip says use 3 cups is flour to make 48 cookies what is the contact of proportionality that relays the number of cookies made y, to the number of cups of used, X what are examples of body language What is diction?-Diction refers to the specific goal or reason a writer chooses.-Diction refers to something that stands for something else.-Diction refers to the choice and arrangement of words.-Diction refers to the reader the author is trying to reach. 20 POINTS PLEASE ANSWER THIS ASAP!!!!!How many six-character code words can be formed if the first two characters are letters and the others are letters and/or digits? Repetition of numbers and letters is allowed. a) 6,760,000b) 723,465,600c) 1,135,420,416d) 918,918,0002.Answer question # 1 if Repetition is NOT allowed.a) 918,918,000b)723,465,600c)1,135,420,416d)720 1.PART A: Which statement best expresses the central idea of the text?A. Game companies specifically target children because they know they have a lowimpulse control.B. Children and teens can develop addictions to video games if they don't regulatehow often they play.C. Game companies research ways to influence gamers, encouraging them to playlonger and to spend more.D. Playing video games negatively impacts other areas of your life, if you don't takeregular breaks.common lit story: how video games are getting inside ur head And wallet No matter how well we get along with our parents as adolescents, there comes a time when we need to break away and assert our own independence. There are several ways in which we do this, some of them deliberate and intentional and some of them not so intentional. Describe several ways you use or have used to break away from your parents. Briefly describe your parents' reactions. Audrey and her family are discussing how to pay for her collegeeducation. The cost of tuition at the college that Audrey wants toattend is $11,000 per year. Audrey's parents will pay 85% of thetuition cost every year, and she will pay the rest. Audrey has oneyear to save enough money to attend her first year of college. Whatis the minimum amount of money she should save every month inorder to reach her goal? HELP PLS ASAP NO LINKS HURRY