Mathematics High School

If the equation is an identity or if it has no solution, write identity or no solution.
7n + 5 − 9n = 8 − 2n − 3

Answers

Answer 1

Answer:

7n + 5 − 9n = 8 − 2n − 3 = true

-2 n + 5 = 5 - 2 n = true

Step-by-step explanation:

Left-hand side:

Simplify the following:

7 n - 9 n + 5

Grouping like terms, 7 n - 9 n + 5 = 5 + (7 n - 9 n):

5 + (7 n - 9 n)

7 n - 9 n = -2 n:

Answer: -2 n + 5

____________________________

Right-hand side:

Simplify the following:

-2 n - 3 + 8

Grouping like terms, -2 n - 3 + 8 = (8 - 3) - 2 n:

(8 - 3) - 2 n

8 - 3 = 5:

Answer: 5 - 2 n

Related Questions

Solve 3(4m - 6) = 12 and explain each step

Answers

distribute the 3 to 4m and 6. this makes 12m-18=12
now add 18 to both sides.
12m=30
now divide by 12
m=30/12

Sue used to have a square garage with 286 ft squared of floor space. He recently built an addition to it. The garage is still a​ square, but now it has​ 50% more floor space. What was the length of one side of the garage​ originally? What is the length of one side of the garage​ now? What was the percent increase in the length of one​ side?

Answers

Answer:

New Length = 20.71 feet

Original Length = 16.91 feet

22.47%

Step-by-step explanation:

Original area of the square garage = 286 ft squared

Addition of 50% more space

New area of the garage = 286 + .50(286)

= 286 + 143

= 429 square feet

What was the length of one side of the garage​ originally?

Original area of the square garage = 286 ft squared

Area of a square = length^2

286 = length^2

Find the square root of both sides

√286 = √length^2

Original Length = 16.91 feet

What is the length of one side of the garage​ now?

New area of the garage = 429 square feet

Area of a square = length^2

429 = length^2

Find the square root of both sides

√429 = √length^2

New Length = 20.71 feet

What was the percent increase in the length of one​ side?

(New length - old length) / old length × 100

= (20.71 feet - 16.91 feet) / 16.91 feet × 100

= 3.8 feet / 16.91 feet × 100

= 0.2247 × 100

= 22.47%

real life example of linear pairs

Answers

Answer:

Two angles are said to be linear if they contains a common ray and the sum of the two angles is equal to 180 degrees. A ladder placed against a building is a real life example of a linear pair.

Step-by-step explaination

hope this helped ✨

The voltage V required for a circuit is given by [tex]v=\sqrt{PR}[/tex] , where P is the power in watts and R is the resistance in ohms.

How many more volts are needed to light a 100-watt light bulb than a 75-watt light bulb if the resistance of both is 110 ohms? Round answer to the nearest tenth.

Answers

Answer:

✓11000-✓8250=~ 14 volts

Step-by-step explanation:

the answer is the difference by 100-watt light bulb to a 75 light bulb.

so, all you have to do is this:

v1-v2--------> ✓PR-✓P2R2

so you'll have ✓100.110-✓75.110= ✓11000-✓8250= 14

I hope it helps

Can someone please help me with the B part? <3

Answers

Answer:

v = 13.5 m/s is the answer

mark me as brainliest if u found it helpful

What is x please help quick

Answers

Answer:

100

Step-by-step explanation:

180 - 136 = 44 (The unknown angle)

180 - 44 -36 = 100 = x

Question 6 of 19
Which of the following numbers is closest to 6?
A. V38
B. 39
C. 35
D. 134
SUBMIT

Answers

35 is the most closest to 6

I need help solving this

Answers

i think the correct one is D

The length of a rectangle is 6 feet and the width is 3 feet. Find the perimeter I
of the rectangle.

Answers

So for the perimeter, there will be 2 of each side. 3(2)+6(2)= 18.
The perimeter is 18 feet.

If f(x)=3x-7, find f(5). *

Answers

Answer:

f(5) = 8

Step-by-step explanation:

3(5)-7

15-7

8

Answer:

f(5)= 3(5) -7

f(5)= 15-7

f(5)= 8

Step-by-step explanation:

just substitute x for 5 and you get the answer

Estimate the square root of 17 to the nearest tenth.

Answers

Answer:

4.1

Step-by-step explanation: Step 1: Calculate. We calculate the square root of 17 to be: √17 = 4.12310562561766.

Step 2: Reduce. 4.12.

Step 3: Round. Round 4.12 so you only have one digit after the decimal point to get the answer: 4.1.

What is the relationship between the two shapes?
A. They are similar and congruent.
B. They are similar but not congruent.
C. They are congruent but not similar.
D. They are neither congruent nor similar.

Answers

i’d help you but i don’t know the two shapes !:( post a pic
i need the pic of the shapes

PLEASE HELP ASAP
Which angle is important using the SAS postulate?

Answers

2,3 I think I’m not sure

-1/4x + 6 = y; (2,4)

Answers

Answer:

The answer is y  =  4 x  −  4

Step-by-step explanation:

Write the equation of the line through the points (-3, 9) and (4, 2) in POINT-SLOPE FORM

Answers

Answer:

y-9=-1(x+3)

Step-by-step explanation:

The formula for point slope is y2-y1=m(x2-x1). So, we can use the values of the given points to solve the equation for m, or, the slope. We get an equation with the result of 2-9=m(4+3), which gives us the slope as -1. Now, substitute your xy values back in, to get the equation

Solve the inequality.−2(x − 3) − 4 ≥ 3x − 5(x − 1)

Answers

Answer:

0>3 i hope it helps

Step-by-step explanation:

Let's solve your inequality step-by-step.

−2(x−3)−4>3x−5(x−1)

Step 1: Simplify both sides of the inequality.

−2x+2>−2x+5

Step 2: Add 2x to both sides.

−2x+2+2x>−2x+5+2x

2>5

Step 3: Subtract 2 from both sides.

2−2>5−2

0>3

What is the equation of a line that is parallel to y = 6x + 7 and passes through (0.9)?​

Answers

Answer:

y = 6x + 9

Step-by-step explanation:

Because the gradient is the same in parallel lines and the y intercept is different.

What is the angle relationship? Meaning, what is the angle for this?
I’ll give brainliest to whoever answers right! :)

Answers

Answer:

Easy. Alternate interior angle.

Step-by-step explanation:

does 55,808 have 2 as a factor ?
does 55,812 have 2 as a factor ?
does 55,814 have 2 as a factor ?
does 55,816 have 2 as a factor ?
does 55,818 have 2 as a factor ?
answer yes or no

Answers

Answer:

Yes.

Yes.

Yes.

Yes.

Yes.

Step-by-step explanation:

Yes for all of them because they are even numbers

Find the measures of the labeled angles

Answers

Answer:

135 degrees \

Step-by-step explanation:

5x= x+108

Subtract x from the right

4x= 108

divide by 4

x= 27

Substitute for x in the original equation

(x+108)

(27)+(108)

= 135 degrees

Jason has three more than four times the amount of money that Jeff has. Together they have $72 How much does each person have? ​

Answers

Answer:

$58.20$13.80

Step-by-step explanation:

Let Jason's money be x and Jeff's money be y

x = 4y + 3x + y = 72

Substitute x in the second equation

4y + 3 + y = 725y = 69y= 69/5y = $13.80

Then

x = 4*13.8 + 3 = $58.2

Faith is driving to a concert and needs to pay for
parking. There is an automatic fee of $7 just to enter
the parking lot, and when she leaves the lot, she will
have to pay an additional $2 for every hour she had her
car in the lot.

Answers

Answer: $7 + 2h = Will be the price she pays when she leaves.

Step-by-step explanation:

A large toy weighs 5/8 pound. How many small toys
that each weigh 5/16 pound have a combined weight
equal to the weight of the large toy?

Answers

Answer is 2
Divide (5/8)/(5/16)
Which equals 2

Use the vertical line test to determine whether or not the graph is a graph of a function.

Answers

Answer:

25. Not a function because when you use vertical line test, you came across two points at the same time.

26. This is a function because when you vertical line test, you don't come across two points at the same time.

Step-by-step explanation:

tomika ran 84 miles in 4 weeks. She ran 7 days each week. If she ran the same number of miles each day, how many miles did she run each day?

Answers

Three miles a day should be the correct answer

9 — 3x = у
3х – у = -2

Answers

Answer:

This could be wrong, but i still wanted to help you.

Step-by-step explanation:

9-3x=y

+9      +9

3x=y

÷3   ÷3

x=y/3

Im sorry if this is wrong

work out the value of 2 ^ 0​

Answers

Answer:

Anything to the 0 power is 1

Step-by-step explanation:

Answer:

2^0=1

Step-by-step explanation:

Line AB and line CD intersect at point E. If angle AEC= 5x and angle BED= x +28, font the value of x. (Number two)

Answers

Go to QuestionCove for better answers, it's too hard for me TwT

Answer:

2. x=7

3. x=11

Step-by-step explanation:

1 mile divided by 2 laps =

Answers

The answer is 800 meters
1 mile is 1600 meters or four laps
So if you divide 1600 by 2 you get 800 meters

There are 4 laps in one mile, therefore, "1 mile divided by 2 laps" = 2.

What is division?

Division is the process of dividing a number by a given number.

Given, the statement "1 mile divided by 2 laps".

The statement written in mathematical form is:

(1 mile)/2 laps

There are 4 laps in one mile, therefore, substitute 1 mile = 4 laps into the above equation:
(4 laps)/2 laps

= 2

Hence, "1 mile divided by 2 laps" = 2.

To learn more about division, click here:

https://brainly.com/question/10571790

#SPJ2

i need help with this geometry please

Answers

Answer:

how may i helps

Step-by-step explanation:

when it says parallel
ALWAYS KEEP THE SLOPE THE SAME
so if it’s y=3x-4
keep the 3x
and change the -4
so you could say
y= 3x -3 or y= 3x +5
both work
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