How to solve 9 * 4 - 8 / 2 *4

Mathematics

2 answers:

egoroff_w [7]3 years ago

8 0

Answer: the answer is 20

Step-by-step explanation:

Use order of operations and divide 8 by 2 and you get 4. Then use the PEMDAS (parentheses,exponents,multiplacation,division,addition, subtraction) method. Go left to right. And solve. :) I hope this helps

r-ruslan [8.4K]3 years ago

3 0

You follow the rules of order of operations multiplication and division the add or subtract in this case start from the left do 9 times 4 which is 36 then 8 divided by 2 times 4 once you get that then subtract those numbers hope that helps

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Find the slope of the following graph a) 1/2 b) 2 c) -2 d) -1/2

FinnZ [79.3K]

Answer:

c. -2

Step-by-step explanation:

because the linear line goes down we know it is negative

and its not 1/2 because it is rise over run. it runs 1 and rises 2 (or drops 2 because it is negative)

rise over run = -2/1 = -2

7 0

2 years ago

(2x+2y=10)+(-x+y=1)

ruslelena [56]

$\bf \begin{cases}
2x+2y=10\\
-x+y=1
\end{cases}\\\\
-------------------------------\\\\
-x+y=1\implies y=1+x\impliedby \textit{let's plug that in the first equation}
\\\\\\
2x+2(\stackrel{y}{1+x})=10\implies 2x+2+2x=10\implies 4x=8
\\\\\\
x=\cfrac{8}{4}\implies \boxed{x=2}\impliedby \textit{let's plug that in the second one}
\\\\\\
-(\stackrel{x}{2})+y=1\implies \boxed{y=3}$