MATHEMATICS HIGH SCHOOL

The solution is n = –2 verified as a solution to the equation 1.4n + 2 = 2n + 3.2. What is the last line of the justification?A. 0.8 = 0.8
B. –0.8 = –0.8
C. 3 = 3
D. –3 = –3

Answers

Answer 1
Answer:

we have

1.4n + 2 = 2n + 3.2

we know that

If n=-2 is a solution of the equation

then

the value of n must satisfied the equation

Substitute the value of n in the equation

1.4*(-2) + 2 = 2*(-2) + 3.2

-2.8 + 2 = -4 + 3.2

-0.8 = -0.8 ----> the equation is true

so

The value of n is a solution of the equation

therefore

the answer is the option B

-0.8 = -0.8
Answer 2
Answer: 1.4(-2)+2=2(-2)+3.2
-0.8=-0.8

Related Questions

Find the solution to the system of 5x+2y=-24 x-y=5
Tom has taken out a loan for college. He started paying off the loan with a first payment of $200. Each month he pays, he wants to pay back 1.2 times as the amount he paid the month before. Explain to Tom how to represent his first 30 payments in sigma notation. Then explain how to find the sum of his first 30 payments, using complete sentences. Explain why this series is convergent or divergent.
The 4 in 0.47 stands for
Do you guys know the domain and range to this?
What is the value of x?

F(x)=5x + 4
When f(x) =54

Answers

The answer is x=10....

Answer:

274

Step-by-step explanation:

5(54)+4 = 274

Ben has some tiles. Each tile is the shape of a parallelogram. 6cm at the top and 10cm on the side He places the tiles in a row to make a shape with area 720cm2. How many tiles does he use?

Answers

Answer:

12 tiles

Step-by-step explanation:

First we need to find the area of the parallelogram, which can be found by the product of the two dimensions.

If the parallelogram has 6 cm and 10 cm, the area is 6 * 10 = 60 cm2

Then to find how many tiles are needed to fill the area of 720 cm2. we can do a rule of three:

1 tile -> 60 cm2

x tiles -> 720 cm2

x = 720 / 60 = 12 tiles

What is 1.5 million written in standard form

Answers

1.5 million in standard form is 1,500,000 

Below are the ages of 21 CEOs. 46, 48, 49, 49, 50, 52, 54, 55, 57, 57, 58, 59, 60, 61, 62, 62, 63, 63, 65, 67, 75 Find the mean- median- mode- Are there any outliers? Explain.

Answers

Answer:

Mean: 57.7

Median: 58

Mode: 49, 57, 62, 63

Outliers: None

Step-by-step explanation:

For the first 4 years of a pig's life, the weight w (in kilograms) of the pig approximately fits the formula w(t) = 2 +14t, where t is the age of the pig in years.Which of the following is the most accurate interpretation of the slope of the line represented by this formula?.A. The slope is 14. This means that the pig gains a total of 14 kilograms in the first 4 years of its life.
B. The slope is 2. This means that the pig gains on average 2 kilograms per year for the first 4 years of its life.
C. The slope is 14. This means that the pig gains on average 14 kilograms per year for the first 4 years of its life.
D. The slope is 2. This means that the pig gains a total of 2 kilograms in the first 4 years of its life.

Answers

C. the slope is the coefficient of the variable and you have given that it describes the growth for 4 years.
i think  the answer is B. 

Please help only have 10 mins to finish this test

Answers

Answer:

The maximum height (vertex) is at (0,256), which is also when it began (Y-Intercept). It will take 4 units for it to hit the ground.

Let us know how you do on the test.
Other Questions
A dripping faucet wastes a cup of water if it drips for four minutes
G(x) = 3x -1. Find x such that g(x)= 2​​0​.g​(x)= 3x+1. Find x ​​​such that g(x)= 22​​​​.​g(x)= ​2x-5. Find g(1/2) and g(a)=9​​​​​​9.g(x)=x+5/2. Find g(3), g(0), g(-3) and g(x)=0​​​​​​​​​​Please solve this quickly. I need it right now​​​​​. No silly answer will not be allowed.
Choose the arithmetic series that is associated with this summation.
Complete the steps to solve the inequality: 0.2(x + 20) – 3 > –7 – 6.2x