2 years ago

I've been looking in the study guide but can't find how to solve it

Mathematics

2 answers:

OLga [1]2 years ago

6 0

The answer is -1/16 or -0.0625, do you need to see work?

mylen [45]2 years ago

4 0

An exponent tells you to multiply the number by itself the number of times
Ex:4²=16,so the first fraction is = to 9/16

Hope this helps

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Please help me answer questions 48 and 48 with the working out please. This is very urgent and i’m giving out 8 points not 5!!!

mariarad [96]

Answer: 65°

<u>Step-by-step explanation:</u>

$E=w(t_f-t_o)\\\\E: 10\ cubic\ feet\times \dfrac{1000\ BTU}{1\ cubic\ foot}\times \ 60\%\quad \rightarrow \quad E=6000\ BTU\\\\\\w:50\ gallons\times \dfrac{8\ pounds}{1\ gallon}\quad \rightarrow \quad w=400\ pounds\\\\\\\\E=w(t_f-t_o)\\\\6000=400(t_f-50)\\\\\dfrac{6000}{400}=\dfrac{400(t_f-50)}{400}\\\\.\quad 15=t_f-50\\\\\\.\quad 15=t_f-50\\.\ \underline{+50}\quad \underline{\quad \ +50}\\.\quad 65=t_f$