3x - 8 is less than 3(x - 4) + 1

what is x

Answers

Answer 1

Answer: x=0, the 3x’s on both sides cancelled each other out

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What is the integer of 3 miles below sea level

Answers

-3 since it's below sea level

If a polynomial function f(x) has roots -9 and 7-i, what must be a factor of f(x)

Answers

Answer:

A. (x - (7 + i))

Step-by-step explanation:

Answer:

(x – (7 + i))

Step-by-step explanation:

option A

Two chemicals are mixed in a test tube and a chemical reaction takes place. If this reaction is endothermic and the test tube is touched, which of the following best describes what is felt?The test tube is cold.

The test tube is warm.

The test tube is very hot.

The test tube is the same temperature as the air.

Answers

The testtube is cold best describes what is felt.

Option A is the correct answer.

What is a chemical reaction?

A chemicalreaction is a process that leads to the transformation of one set of chemical substances into another.

In other words, it is the process of breaking and forming chemical bonds between atoms to create new compounds with different properties than the original substances.

We have,

An endothermicreaction is a type of chemical reaction that absorbs heat from the surrounding environment, resulting in a decrease in temperature.

In this case,

The chemicalreaction that occurred in the test tube absorbed heat from the surroundings, including the air and the test tube itself.

As a result, the temperature of the test tube decreased, making it feel cold to the touch.

Thus,

The testtube is cold best describes what is felt.

Learn more about the chemicalreaction here:

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Final answer:

In an endothermic reaction, the test tube will feel cold because heat is absorbed by the system from the surroundings.

Explanation:

A chemical reaction or physical change is endothermic if heat is absorbed by the system from the surroundings. In the course of an endothermic process, the system gains heat from the surroundings, and so the temperature of the surroundings decreases.

The quantity of heat for a process is represented by the letter q. The sign of q for an endothermic process is positive because the system is gaining heat.

A chemical reaction or physical change is exothermic if heat is released by the system into the surroundings. Because the surroundings are gaining heat from the system, the temperature of the surroundings increases.

The sign of q for an exothermic process is negative because the system is losing heat.

Learn more about Endothermic reactions here:

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How much money should be invested every year with 4% interest per year in order to save up $26,000 in 18 years?

Answers

Answer:

$15116.28

Step-by-step explanation:

Given data:

interest rate, r= 4%

time, t= 18 years

Final investment, A= $26000

Principle investment, P=?

As per the formula of interest

A= P (1+rt)

Putting the values:

26000= P(1+ 0.04(18))

P= 26000/(1+ 0.04(18))

P= 15116.28 !

What is the simplest form of 13/26

Answers

The simplest form of this fraction is 1/2. You can divide 13 by 26 to get 2 as the denominator.

1/2
to simplify, divide each number by a common denominator. here, the common denominator is 13.
13 ÷ 13 = 1
———— —
26 ÷ 13 = 2

What does 3/8 x 4/9 mean?

Answers

3/8 × 4/9

First, let's see if they can cancel out. Nope. 3 and 8 have no common factors, and neither do 4 and 9.

When you're multiplying fractions together, you can switch out the numerators and denominators (if it helps you visualize things more easily. You won't need to do this step with some practice).

3/8 × 4/9 =
3/9 × 4/8 =

Now three 3 and 9 both have a common factor of 3. Divide them both by that common factor, top and bottom.

3/9 × 4/8 = //Comment: 3 ÷ 3 = 1, 9 ÷ 3 = 3.
1/3 × 4/8 =

4 and 8 likewise have a common factor, but of 4. Divide them both by that common factor. Remember, what you divide or multiply from the top, must also be done with the bottom and vice version. This way it will cancel out.

1/3 × 4/8 = //Comment: 4 ÷ 4 = 1, 8 ÷ 4 = 2.
1/3 × 1/2 =

Now multiply the numerators to each other, and the denominators to each other.

1/3 × 1/2 =
(1 × 1)/(3 × 2) =
1/(3 × 2) =
1/6

That is your answer. To check, we can do the opposite operation. In this case, you can divide the answer by either of the two original fractions and you should get the other. That's a little more advanced though, but a quick and easy way to convert from fraction division to fraction multiplication is to invert the fraction and the division sign to a multiplication sign.

1/6 ÷ 3/8 = 4/9 //Comment: Invert fraction and division sign.
1/6 × 8/3 = 4/9 //Can we cancel out any thing?
1/3 × 8/6 = 4/9

8 and 6 have a common factor of 2. Divide both by that factor.

1/3 × 8/6 = 4/9 //Comment: 8 ÷ 2 = 4, 6 ÷ 2 = 3
1/3 × 4/3 = 4/9

Multiply the numerators together and the denominators together.
1/3 × 4/3 = 4/9
(1 × 4)/(3 × 3) = 4/9
4/(3 × 3) = 4/9
4/9 = 4/9

4/9 = 4/9 which is true. If you like, try it out with 1/6 ÷ 4/9 :)

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