MATHEMATICS HIGH SCHOOL

A carpenter has two plank of wood. One plank is xcm long, the other plank is 3xcm long. What is the total lenght of the two planks

Answers

Answer 1
Answer:

The total length of the two plank is 4x cm

What is addition?

Addition in maths is a process of combining two or more numbers.

Given that, A carpenter has two planks of wood. One plank is x cm long, the other plank is 3x cm long.  

To find the total of the length of the plank, we will have to add their lengths,

Therefore, total length = 3x+x = 4x

Hence, the total length of the two plank is 4x cm

For more references on addition, click;

brainly.com/question/29560851

#SPJ2
Answer 2
Answer: If one length is 'x cm' long, and the other is '3x cm' long, the combined length would be (x + 3x) cm long, or 4x cm.

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Given the function f ( x ) = 3 x − 1 , find x when f(x) = 20. Show the work that leads to your answer.

Answers

Answer:

20 = 3x - 1 \n 20 + 1 = 3x \n 21 = 3x \n x = 7

Step-by-step explanation:

first add the one with 20 then divide by 3

Solve for m. 99pt reward and brainliest−37m=12−37m=12

−28−28

−26−26

26

28

Answers

-37m = 12

plug in the numbers:

(-28)(-37) ≠ 12

(-26)(-37)≠12

(26)(-37)≠12

(28)(-37) ≠ 12


idk none of the given answers are correct. Sorry.

Answer:

28 i took the test an that was the answer

The mass of an electron is approximately 9 × 10-28 grams, while the mass of a neutron is approximately 2 × 10-24 grams. Which of the following is true?The mass of a neutron is approximately 2,000 times the mass of an electron.

The mass of a neutron is approximately 10,000 times the mass of an electron.

The mass of a neutron is approximately 20,000 times the mass of an electron.

The mass of a neutron is approximately 1,000 times the mass of an electron.

Answers

We simply divide the Mass of Neutron by Mass of electron


=  2 × 10⁻²⁴ / (9 × 10⁻²⁸)

=  (2/9) × 10⁻²⁴ ⁻ ⁻²⁸

=  (2/9) × 10⁻²⁴ ⁺ ²⁸

≈ 0.2222... × 10²⁸ ⁻ ²⁴

≈ 0.2222  × 10⁴

≈ 2222    

This is approximately 2000 times.

So:

The mass of a neutron is approximately 2,000 times the mass of an electron

The first option. I hope this explains it.

Answer:

The mass of a neutron is approximately 2,000 times the mass of an electron

Step-by-step explanation:

=  2 × 10⁻²⁴ / (9 × 10⁻²⁸)

=  (2/9) × 10⁻²⁴ ⁻ ⁻²⁸

=  (2/9) × 10⁻²⁴ ⁺ ²⁸

≈ 0.2222... × 10²⁸ ⁻ ²⁴

≈ 0.2222  × 10⁴

≈ 2222    

This is approximately 2000 times.

The table below shows the price of rolls at a bakery. A baker’s dozen includes 13 rolls for the price of a dozen rolls. How much money is saved by buying a baker’s dozen instead of 13 individual rolls?

Answers

it's 0.60

Have an nice nice day

If you invest $2,000 today in a bank that gives you a 4 percent annual interest rate, which of these items can you buy in seven years?

Answers

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All of them 

put this in a calculator: 2000*20%*7 then take away the prices or bills and thats how much money is left after the shopping spree

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Cos^2x-Sin^2x=1-2sin^2x

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