Explain how you use substitution to solve a system of linear equations.

Answers

Answer 1
The method of solving "by substitution" works by solving one of the equations (you choose which one) for one of the variables (you choose which one), and then plugging this back into the other equation, "substituting" for the chosen variable and solving for the other. Then you back-solve for the first variable.
Answer 2

Answer:     Step 1 : First, solve one linear equation for y in terms of x .

   Step 2 : Then substitute that expression for y in the other linear equation.

   Step 3 : Solve this, and you have the x -coordinate of the intersection.

   Step 4 : Then plug in x to either equation to find the corresponding y -coordinate.

Step-by-step explanation: MARK ME AS BRAINLIEST PLEASE PLEASE PLEASE!!!


Related Questions

are the following equations equivalent why or why not Branilist for people who explain

Answers

Answer:

Yes, they are equivilant

Step-by-step explanation:

5(3m+2p)-4m = 13p+11m-3p

Distribute 5: 15m+10p-4m = 13p+11m-3p

Combine like terms: 15m+(-4m) = 11m ; 13p+(-3p) = 10p

11m+10p = 11m+10p

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

Set up a proportion to predict the outcome of the given event

How many of the next 20 containers of ice cream sold should expect to be chocolate if the last 15 sales consisted of the following:4 vanilla, 3 chocolate, 7 cookies-n-cream, and 1 strawberry. please help

Answers

It is 4.
The proportion of chocolate to the containers of ice cream sold is 1:5
Or 1 to 5.

This is math can u guys help me with this plss if you have ay questions ask me in the question comment section i just need these two question pls help if you know 8th grade math pls help

Answers

So this may not be correct but I tried so here’s my thought process

1. x - 2y = 3
2. 3x + 2y = 8
3. 2x + 3y = 13
4. 2x - 3y = 19

1. X = 9 Y = 3
2. X = 2 Y = 1
3. X = 2 Y = 3
4. X = 17 Y = 5

The question are vague enough to where anything can be put as x and y. These are just some of those results so do take this with a grain of salt. Good luck?

Find the volume of the following square-based pyramid.


66 cubic cm


484 cubic cm


726 cubic cm


1452 cubic cm

Answers

Answer:

484

Step-by-step explanation:

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

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

Look at the stem-and-leaf plot. How many numbers in the stem-and-leaf plot are greater than 110? A. 2 B. 8 C. 10 D. 11

Answers

Answer:

The answer is C.

Step-by-step explanation:

If you look at the Key 9/7 = 97 you see that the third row the first number is 112 which is greater than 110. After that all those numbers are greater than 110.

  Total numbers given in the stem-and-leaf plot are 18, out of which 10 numbers are greater than 110.

  Hence, Option (C) will be the correct option.

How to analyze a stem-and-leaf plot:Key of any stem-and-leaf plot is self explanatory.

       Example: A number 97 will be written as 9 | 7

So the numbers given in the stem-and-leaf plot are,

94, 97

100, 100, 100, 103, 106, 109

112, 112, 115, 118

121, 124, 127, 127

130, 132

Now we have to identify the numbers greater than 110.

So the numbers greater than 110 will be,

112, 112, 115, 118

121, 124, 127, 127

130, 132

   Hence, total numbers greater than 110 are 10. Option (C) will be the correct option.

Learn more about the stem-and-leaf plot here,

https://brainly.com/question/16672890?referrer=searchResults

HELP FAST. I WILL CASHAPP $5

On a certain hot​ summer's day, 540 people used the public swimming pool. The daily prices are $1.25 for children and $2.00 for adults. The receipts for admission totaled $822.75. How many children and how many adults swam at the public pool that​ day?

Answers

366 children and 388 adults at the pool
388 and 366
adults children

Write six and five hundredths in decimal form.

Answers

6.05 is six and five hundredths in decimal form.

Answer:

5 hundredths: 0.05

6 hundredths: 0.06

Step-by-step explanation:

Name five values between -6 and -7. Order them from least to greatest

Answers

Answer:

-6.9, -6.7, -6.6, -6.3, -6.1

Step-by-step explanation:

-6.9 -6.8 -6.7 -6.6 -6.5

What is the volume, in cubic feet, of the figure below?

A. 20
B. 22
C. 120
D. 240

Answers

Answer:

C. 120 is correct

Step-by-step explanation:

I used a triangular prism calculator.

double the difference between 7 and y

Answers

Answer:

Difference indicates subtraction: The difference of a number and 9 is (x−9) Twice the difference means 2(x−9) We know that the answer to this is 2 , so as an equation: 2(x−9)=2.

Step-by-step explanation:

:|

2(7-y) is the answer

Mrs. Smith will select a president, vice-president, and secretary from a committee of 10 members. In how many different ways can a president and a vice-president be chosen from the committee?

Answers

Answer: These must be different members For example: President cannot also be the Secretary.

(15 different ways.)

Step-by-step explanation:

10 · 9 · 8 · 7 = 10!

(10−4)! = P10,4 = 5040.

GIVING BRAINLY
Find the value of the following expression:

(28 ⋅ 5−5 ⋅ 190)−2 ⋅ 5 to the power of negative 2 over 2 to the power of 3, whole to the power of 4 ⋅ 228 (5 points)

Write your answer in simplified form. Show all of your steps.

Answers

Answer:

(5^32 / 2^76) * 2^28 = 5^32 / 2^48

Step-by-step explanation:

(2^8 . 5^-5 . 19^0)^-2

using PEMDAS

this = (2^8 * 1/5^5 * 1)^-2

=  (5^5 / 2^8)^2

= 5^10 / 2^16

A salesman sells a car for $37,000 and earns 8.5% commission. How much commission does he earn?

Answers

Answer:

4,352 dollars

Step-by-step explanation:

The amount of commission that the salesman earned is $3145.

What is Percentage?

Percentage is defined as the parts of a number per fraction of 100. We have to divide a number with it's whole and then multiply with 100 to calculate the percentage of any number.

Percentage is usually denoted by the symbol '%'.

Given that,

Selling price of the car = $37,000

Percent of commission earned = 8.5%

Amount of commission earned = 8.5% × $37,000

                                                    = (8.5 / 100) × $37,000

                                                    = 0.085 × $37,000

                                                    = $3145

Hence the commission earned is $3145.

Learn more about Percentage here :

https://brainly.com/question/29086621

#SPJ3

Rewrite without absolute value for the given conditions:
1. y=|x-5|+|x+5|, if x<-5
2. y=|x-5|+|x+5|, if -5

Answers

1) |5-5|+|5+5|= |0|+|10|= 0+10= 0
2) |-5-5|+|-5+5|= |-10|+|0|= -10+0= -10

5-5| + |5+5| = 0+10=10

I WILL GIVE YOU BRAINLEST IF YOU ANSWER IT RIGHT IN 5 MINUTES!!!!!!! 20 POINTS!!
Which statement is correct?
A) 3.56x10^2/ 1.09x10^4 equal or less than< (4.08x10^2)(1.95x10^-6)
B) 3.56x10^2/ 1.09x10^4 < less than (4.08x10^2)(1.95x10^-6)
C) 3.56x10^2/ 1.09x10^4 > more than (4.08x10^2)(1.95x10^-6)
D) 3.56x10^2/ 1.09x10^4 = equal (4.08x10^2)(1.95x10^-6)
I couldn't put the underline on the first problem but I wrote it out what it is suppose to be.

Answers

Answer: A

Step-by-step explanation: plz mark me brainliest

Answer:

Step-by-step explanation:

(b)(1), .. 3.56x10-4 ... 2.26x10-1 ± 1.09x10-2 Bq/L (6.11x100 ± 2.95x10-1 ... 4.08x10-3 ... 1.95x10-2.

What is the theoretical probability that the family has two dogs or two cats?

Answers

Answer:

The theoretical probability i that the has two cats ot two dogs is 50%

I am just now doing my schoolwork for today, due to some distractions, can someone help me understand how to find the volume of basic shapes? I really need help, because I have been talking to someone most all day, and I need to finish a sheet about shapes' volume. If you could right the formula for that, that would be great.

Answers

Answer:

Step-by-step explanation:

Step by step explanation

GIVING THANKS AND BRAINLIEST FOR BEST ANSWER <3
::::::::

Answers

Lol it is me.again



B

What is the value of x?

Enter your answer in the box.

x =

Answers

Answer:

The answer will be like this

X =20

Ayo another question coming up, but this is the big bang in points!

Please help me with this 20pts

Answers

Whats the question? Ill answer in comments when i find out

When finding the unit rate, the words per and each tell us what unit of measure needs to equal ONE. True or False

Answers

Answer:

true

Step-by-step explanation:

What is the total surface area of the square pyramid in square inches?

Answers

Answer:

Calculated out this gives a surface area of 138.528 Square Inches.

Step-by-step explanation:

i think p hope its right -w-

I got 357

find the area of the square: 49 bc squares have equal sides

then find the area of the triangle: 77 (7x11) then multiply it by 4 bc there r 4 triangles (308)

add them and u get 357

There is a guitar that originally costs $249.99. It is on sale for 15% off. You also have to pay 6% sales tax. How much will you pay for the guitar?

Answers

After the discount and sales tax you pay 225.24
You’d pay $225.24 after the discount and tax

What is the horizontal or vertical distance between the points (4 -11) and (15, -11)?


A. vertical distance of 19 units

A. vertical distance of 19 units


B.horizontal distance of 0 units

B. horizontal distance of 0 units


C. horizontal distance of 11 units

C. horizontal distance of 11 units


D.vertical distance of 11 units

D. vertical distance of 11 units

Answers

The answer should be D
The answer should be D

PLEASE HURRYYYY ITS DUE SOON

Answers

It’s the third one 9(5+1)

As 9 x 5 = 45
9x 1 = 9

Answer:

The third answer 9(5+1)

Step-by-step explanation:

The expressions are equivilant.

When 300 apple trees are planter per acre, the annual yield is 1.6 bushels of apples per tree. For every 20 additional apple trees planted, the yield reduced by 0.01 bushel per tree. How many apple trees should be planted to maximize the annual yield

Answers

700 ffhgftgcfgfdfcc.

Answer:

700

Step-by-step explanation:

mark me brainlist!

helpme please i dont understand this

Answers

Answer: Distributive, Associative, Commutative, Distributive

Step-by-step explanation: you are asking for the second one. It is the associative property like I mentioned earlier because you are moving the paranthesis (only applies for multiplication and addition) and therefore associating the terms of the problem together

Answer:

1. Distributive Property

2. Commutative Property

3. Associative Property

4. Distributive Property

Sorry if any of these are wrong!

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