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3 years ago

7a+4b-2c if a=8,b=2 and c=17

2 answers:

Volgvan3 years ago

6 0

Answer: 30

Explanation:

7a+4b-2c
First replace the variable and put in parentheses:
7(8)+4(2)-2(17)
When you see a number next to a parentheses, you multiply:
7(8)+4(2)-2(17)
56 + 8 - 34
Then you add first, and then subtract last:
55+8-34
64-34= 30
REMEMBER to use PEMDAS

cestrela7 [59]3 years ago

5 0

The answer is 30
7(8)+4(2)-2(17)=30

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Read 2 more answers

Find the additive inverse of 7/10

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$\huge\fbox{Hi~there!}$

Remember, a number's additive inverse is simply its opposite.

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Hope it helps.

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2 years ago

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3 years ago

A room is 5 meters by meters . How many square 14-inch tiles will it take to floor the room ? I meant to say a room is 5 meters

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Room is 5 meters by 8 meters.

Measure of squaree tiles is 14-inch.

$\begin{gathered} \text{Area of the room=5}\times8 \\ \text{Area of the room=}40m^2 \end{gathered}$ $1m^2=1550inch^2$ $\begin{gathered} \text{Area of each tile=14}\times14 \\ \text{Area of each tile=}196inch^2 \end{gathered}$ $\begin{gathered} \text{Number of tiles to floor the room=}\frac{40\times1550}{196} \\ \text{Number of tiles to floor the room}=316.3265 \end{gathered}$

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1 year ago