3 years ago

I need the answer and work

1 answer:

7 0

A) 2x +3

Plug in the x

2(4.1) + 3

8.2+ 3= 11.2

A is 11.2

B) 16-5y

Plug in the y

16 - 5(2.3)

16- 11.5= 4.5

B is 4.5

C) x+y

Plug in x and y

4.1 + 2.3= 6.4

C is 6.4

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Using scientific notation, what is the solution to (2.82 * 104) * (3.1 * 103)?

MArishka [77]

Answer: Choice A) 8.742 * 10^7

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Work Shown:

$(a * 10^b) \times (c * 10^d) = a*c*10^{b+d}\\\\(2.82 * 10^4) \times (3.1 * 10^3) = 2.82*3.1*10^{4+3}\\\\(2.82 * 10^4) \times (3.1 * 10^3) = 8.742*10^{7}\\\\$