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love history [14]

3 years ago

9

-8x + 3x + 7 = 0

{2}^+ 3x + 7 = 0" alt="-8x {2}^+ 3x + 7 = 0" align="absmiddle" class="latex-formula">

1 answer:

Len [333]3 years ago

6 0

It’s no real solutions

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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>

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

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2 years ago

The product of two whole numbers is 608 and their sum is 51 .what are the two numbers ?

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3 years ago

Where would 3 /1/2 and 3 1/12 be on the number line

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3 years ago

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3. B: 2 inches

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