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3 years ago

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What is 6 +0.2 + 0.09 written in standard form? A 0.629 B 6.029 C 6.209 D 6.29

1 answer:

Free_Kalibri [48]3 years ago

5 0

Answer:

D

Step-by-step explanation:

<u>The answer is D</u>. 6 is the whole number with no decimal after it so it goes before the decimal. Then we add the numbers after the decimal. 0.2 is the same as 0.20 so we add 0.20 plus 0.09 which gets us 0.29. Lastly, we add this all together and get a total of 6.29. Hope this helps!

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Molodets [167]

Given:

In a set of 3 numbers the first is a positive integer, the second is 3 more than the first and the 3rd is a square of the second.

To find:

The equation for the given situation if the sum of the numbers is 77.

Solution:

a. Let the first number in the set is x.

The second is 3 more than the first. So, the second number is $(x+3)$ .

The 3rd number is a square of the second. So, the third number is $(x+3)^2$ .

Therefore, the first, second and third numbers are $x,(x+3),(x+3)^2$ respectively.

b. The sum of the numbers is 77.

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c. So, the equation in terms of x is:

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Therefore, the required equation is $x+(x+3)+(x+3)^2=77$ .

d. On simplification, we get

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$x^2+8x+12=77$

Subtract 77 from both sides.

$x^2+8x+12-77=77-77$

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Therefore, the simplified form of the required equation is $x^2+8x-65=0$ .

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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