Mathematics High School

How do you solve equations using Substitution.

Answers

Answer 1
Substitution is one of the methods for solving linear equations. It is a good choice if there is a variable with a coefficient of 1. This method involves solving one of the equations for a variable and then substituting that expression into another equation to solve for another variable. This will produce a single equation with one variable, which can then be solved algebraically.

Related Questions

Writing Equations
Instruction Active
Identifying Components of an Equation
Quick
Chock
Consider the equation
x + 3y - 23 = 42
The variables are
The coefficients are
The constants are:
✓

Answers

Answer:

The Variables are X & Y

The Coefficients are 1/4 & 3

and the Constants are -23 and 42

Step-by-step explanation:

it's correct on edge!

Find

sin 22 1/2
°
please help​

Answers

Answer:

0.69465837 is the answer

PLSSSS HELPPPPPP!!!!!!
4. ATT offers a plan that costs $20 and charges $0.25 per text. For what number of texts does our
bill charge exactly $85?
Define the variable:
Equation:

Solve for x:

Interpret your answer:

Answers

Answer:

x=260 texts

Step-by-step explanation:

85=0.25x+20

Subtract 20 from each side.

65=0.25x

Divide both sides by 0.25.

260=x

260 texts plus the $20 flat fee will cost $85.

Diana makes 3 batches of biscuits using 15 cups of flour. How many cups of flour does Diana use per batch?

Answers

Answer:

5 cups

Step-by-step explanation:

15 divided by 3

Answer:

5 cups

Step-by-step explanation:

15 cups/3 batches = 5 cups

One group on the trip was given 85 to split equally for
their meal money. If the group had 10 people in it, how much money does the person get ?
much meal money does each person get?

Answers

Each get 8 dollors and 5 cents bc 85/10 is 8.5

please help, I don’t know how to do this.

Answers

Answer:

Q2: slope = -½

Q3: slope = 1

Step-by-step explanation:

If the equation of the line is in the form y = mx+b, then m is the slope of the line and b is the y-intercept (the point where the line crosses the x-axis).

y = -½x, so the slope of the line is -½

y = x+15, so the slope of the line is 1

Please help me out! I'll mark Brainliest

Answers

Answer:

rational and rational..........

Which point is a solution to the system of inequalities below?

Please help now . I don’t wanna fail

Answers

Answer:

you can pick any point you want to, as long as it falls under the 2 shaded areas.

Need help ASAP!!
Find the value of x in the figure below if LP is parallel to MO.

A.) 6 units
B.) 10.7 units
C.) 5.5 units
D.) 3 units

Answers

The correct answer is A.

Answer:

A. 6 units

Step-by-step explanation:

took the test

Amanda wants to run 26.2 miles, the distance of a marathon, in a month. She plans to run ¾ of a mile each day. How many days will she need to run? Will she be able to reach her goal?

Answers

Answer:

it would take about 35 days

Step-by-step explanation:

(slopes) PLEASE HELP IT'S OVERDUE AND I'M CONFUSED! (brainliest)

Answers

Answer:

sorry

Step-by-step explanation:

i really don't know i'm doing overdue work to

10. Which represents a function?

Answers

Answer:  B ?

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

Use the vertical line test to see if it a function. If the vertical line passes through 2 or more points, then it not a function. If only one point, it is a function.

Guys I know I just asked something but my teacher just posted a assignment I looked at it and I remembered some of it from 3rd grade but can someone help me with this plz I don’t remember some of it I’m giving away 25 points now plzz

Answers

Answer:

1) 45.67x32.58=1487.93

2) $4.70x24=$112.80

3) $4.75x32+($2456.75)=$2608.75

4) 24.6 feet x 14.8 feet=364.08 sq feet

Step-by-step explanation:

Answers:

(I'm not sure why there are 2 questions marked number 1 though so tell me if you need me to clarify anything)

1.) 1,487.93

1.) $112.80

2.) $2,608.75

3.) 364.08 sq ft

Hope this helped, have a nice day! :)

What is the solution to this system of
equations?
S 2x – 3y = -4
-6x + 9y = 12

Answers

Answer:

2x-3y=-4

2x=3y-4

x=(3y-4)/2........1

-6x+9y=12

9y=12+6((3y-4)/2)

9y=12+9y-12

9y-9y=12-12

0=0not possible

9y-6y=4

y=4/3

Step-by-step explanation:

check it out a question once

Hakeem has a coupon for 13 off the regular price, t, of a tent. Which expressions represent the price of the tent using the coupon? Select all the correct expressions.

1/3t

2/3t

t−2/3t

t−1/3

t−2/3


t−1/3t

Answers

Answer:

123456789101112131415

Answer B and F are correct

Simplify the expression: -4z -6 - 7z + 3

Answers

The answer would be -11 z - 3

Solve: 4x - 27 = 57 ty

Answers

Answer: x=21

Step-by-step explanation:

Look at attached file

Evaluate the expression. (343)^-1/3​

Answers

Answer:

THE ANSWER IS 1/7

Can someone pls help me out on the middle one pls ?:(

Answers

Answer:

77 C

Step-by-step explanation:

To find the mean add all the numbers together then divide by the total amount of numbers

Tim earns 108.75 for working 15 hours. how much money does he earn per hour?

Answers

Step-by-step explanation:

Only divide 108.75 by 15

and

answer is 7.25

Which function has a domain of x = -5?
​

Answers

I believe the answer is H but I’m not 100% sure if I’m wrong somebody please correct me

Divide 4.8 by 11 Plzzzz help by the end of the day I need help

Answers

4.8 divided by 11 = 0.43636(repeat 36 infinitely)

A cuboidal soap dish has length 8 cm 5 cm and 13 cm find the volume of the research services placed on the top of the other

Answers

Answer:

520 cm³

Step-by-step explanation:

Volume of the cuboidal soap = length × width × height

Length = 8 cm

Width = 5 cm

Height = 13 cm

Volume of the cuboidal soap = length × width × height

= 8 cm × 5 cm × 13 cm

= 520 cm³


A biologist who has been studying herd movements in elephants just finished spending
several hours with the herd. The elephants are now moving due east at 3 miles per hour. The
biologist, meanwhile, is driving due west to base camp at a rate of at 25 miles per hour. In
how long will the biologist be 1 mile from the herd?
If necessary, round your answer to the nearest minute.

Answers

We have been given that the speed of elephants is 5km/h east and his speed is 41km/h west.
We have to find after how long will he be 13km from the herd.
Since the biologist is going to the west and the elephants towards east, their relative speed will be calculated by adding their respective speeds.
So final their relative speed will be:
= 5 km/h + 41 km/h
= 46 km/h
Now we want their distance to be 13 km and we have calculated relative speed as 46 km/h.
So using formula :
Speed = Distance / Time,
We calculate time as :
= Distance / Speed
= 13 / 46
= 0.28 hours
= 16.8 minutes.
So after 16.8 minutes, biologist will be 13 km away from the herd.

Write a sentence to describe the absolute vaule 15 points

Answers

The absolute value is the distance between a number and zero. Therefore your following answers are:
a) 4
c) 18
e) 44
g) 99
i) 128

Describe the translation that maps ABCD onto A’B’C’D’?

Answers

Answer:

Umm...where is it? There is no image

Step-by-step explanation:

Translations...

How many times did it move up or down?

How many times did it move to the right or left?

Transition starters

ABCD moved ( write here the number of spaces) times to the ( left or right), and ( write the number of spaces) times to the ( top or bottom) to convert into A'B'C'D'.

Hope this helped!

Have a supercalifragilisticexpialidocious day!

2,76
5. Rationalize the denominator of the following: 2 root 6 divided by root 2 + root 3

Answers

Answer:

6 √2 -4 √3

Step-by-step explanation:

Here, we want to rationalize the denominator of the following surdic fraction;

2√6/(√2 + √3)

To rationalize this, we have to multiply the numerator and the denominator by the conjugate of the denominator

The conjugate of the denominator is √2 - √3

So, we have the rationalization as follows;

2 √6(√2-√3)/(√2 + √3)(√2-√3)

Thus, we have

(4√3-6 √2)/(-1)

= 6 √2 -4 √3

Help mate I will appreciate it

Answers

Answer: -3

Step-by-step explanation:

9-3=6

3-6=-3

Plz help i need help i will mark you brianleast

Answers

Answer:

y=x+4

Step-by-step explanation:

The slope of the graph is 1x or just x. The y-intercept of the graph is 4 because the line intercepts with the y axis at 4. So your equation is y=x+4.

Hope it helps!

The product of 6 and a number , x is twice the difference of x and 5. Solve for variable x. Need help here the choice
A.-1.25
B.1.25
C.-2.5
D.2.5

Answers

Answer: I think D

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer:

B. X=5

Step-by-step explanation:

To solve this problem, first, you have to isolate the value of x from one side of the equation.

First, divide by 4 from both sides of an equation.

Solve.

|0.5x-2.5|=0

0.5x-2.5=0

x=5

Therefore the correct answer is x=5.

Other Questions
Transition Words Escape Room Level 5 HELP!the questions answers are ...1) B2) C3) D4) A PLS HELP I WILL GIVE BRAINLIST.Read this excerpt from the story B ruh Alligator and Br uh Deer from The People Could Fly."Here tis," says Br uh Alligator. "When you take to the river, I'll take e the beagle what chasin you. Me for you, and you for me, and both us for one another."What theme is suggested by this excerpt?If you help a friend, your friend will help you.Life is full of da ngers that you must face.If you try to avoid dan ger, dan ger will find you.You must forgive your friends when they harm you. The trade route that connected India to markets in Europe and the ArabianPeninsula was theA trans Saharan trade networkB Silk Road trade networkSonghai trade networkIndian Ocean trade network how do I become a better math student Solve for b.4b+5=1+5b A 10 ohm a 15 ohm and a 20 ohm resistor are connected in series across a 9v supply what Current flows How old is the oldest known plant fossil ? Simplify the expression to polynomial in standard form (3x+2)(3x-2)(2x-3) Select the correct answer.How marny calories are in a gram of lipids or fat?A. 4B. 6C. 9D. 14 13.The difference between two numbers is 14. The smaller number is b.Write an expression that represents the greater number. HELPPPPP WITH THESE TWO PLEASEEEE Which phrases describe the open-ocean zone? Check all that apply. Fully describe what transformations have occurred to the following function f(x)=-3(x+2) Each employee in a company is either right-handed or left-handed.32 of the 54 employees are female.18 of the 41 right-handed employees are male.Complete the frequency tree for this information.right-handed32left-handedfemale5418right-handedleft-handedmale QUESTION 6Which is correct?a. Todds juiceb. Todd's juice why did the democratic party split in the 1850s Please help, due in 3 min no, this question isn't abt language arts, mathematics. Im asking u this How are u doing? c: Please help me with this one please If the Supreme Court states that a law is constitutional, can the same kind of law be written by other states?