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tensa zangetsu [6.8K]
3 years ago
9

Ellema knows that 1/5 written as a decimal is 0.2. How can Ellema use this information to find the decimal equivalent for 9/5 wi

thout doing 9 divided by 5?
Mathematics
2 answers:
ziro4ka [17]3 years ago
6 0

Answer:

1.80 or 1.8

Step-by-step explanation:

As you can see 9 is bigger than 5. But it is not a multiple of 5. you can do

9 - 5 = 4. This means that there is a whole number because 5 can go into 9 one time. Since you have taken 5 away from 9 it would be 1 and 4/5. 4 parts out of 5 is 0.80 so the decimal answer to this would be 1.80 or 1.8

Rus_ich [418]3 years ago
3 0

Answer:

1.8

Step-by-step explanation:

0.2 times 5 is 1.8

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A number changed to 12.6 after it was rounded. To what place was the number rounded? Explain how you know.
Anton [14]
If 12.6 was rounded, that means that it was rounded to the tenths place.
You know this because the number has one decimal place, so that must be what it was rounded to.
4 0
3 years ago
The sum of 3 times the value of x and 2 is equal to four less than five times the value of x. Which equation can be used to find
bonufazy [111]

The question has omitted  options but i will solve, so you will just check my answer from the options you have.

Answer: The equation  to find the value of x = 3x+ 2= 5x-4

The value of x= 3

Step-by-step explanation:

Step 1

The sum of 3 times the value of x and 2 is equal to four less than five times the value of x can be expressed as

3x+ 2= 5x-4

Step 2

Solving this equation  to find the value of x , we have that

3x+ 2= 5x-4

3x-5x= -4-2

-2x= -6

x= -6/-2

x=3

5 0
3 years ago
D=.5*a*t^2 - solving for a<img src="https://tex.z-dn.net/?f=d%3D.5%2Aa%2At%5E2" id="TexFormula1" title="d=.5*a*t^2" alt="d=.5*a*
Leviafan [203]

Answer:

\displaystyle a=\frac{d}{.5*t^2}

Step-by-step explanation:

<u>Equation Solving</u>

We are given the equation:

d=.5*a*t^2

It's required to solve it for a.

Swap sides to have the letter on the left side:

.5*a*t^2=d

Divide by .5*t^2:

\mathbf{\displaystyle a=\frac{d}{.5*t^2}}

7 0
3 years ago
What is the approximate distance around the half circle with radius 12 centimeters?
Katarina [22]
You can find the perimeter of a circle by using the radius.
circumference = 2 \pi r
Circumference = 2 \pi x 12
circumference = 24 pi
Since you are only trying to find half of the circle you would divide your answer by 2 

24pi / 2 = 12 pi

12 pi = 37.68

The answer is B. 37.7
4 0
3 years ago
Simplify the expression below.
Ostrovityanka [42]

Answer: OPTION C.

Step-by-step explanation:

Given the following expression:

4x(3x- 7) - 19x^2

You can simplify this expression applying these steps:

First step: You must apply Distributive property:

=12x^2-28x-19x^2

Second step: You need to add the like terms.

Then, you get:

=-7x^2-28x

You can observe that this simplified expression matches with the expression provided in Option C.

3 0
3 years ago
Read 2 more answers
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