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forsale [732]
3 years ago
13

How do I do mental math

Mathematics
2 answers:
irga5000 [103]3 years ago
8 0
In mental math is in your head
wariber [46]3 years ago
7 0
By answering the questions in your head its simple
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At a sport clubhouse the coach wants to rope off a rectangular area that is adjacent to the building. He uses the length of the
Furkat [3]

Answer:

w < 8 meters ( w must be greater than 0 because length cannot be 0)

Step-by-step explanation:

One side with building is 23 meters, the other opposite side also will be 23 meters (with rope).

Let width (remaining 2 sides) be "w", he has AT MOST 39 meters of rope, so we can write:

Rope Needed = 23 + 2w < 39

Simplifying:

23 + 2w < 39\\2w < 39 - 23\\2w < 16\\w < 8

The range of possible values of w is  w meters (of course w has to be greater than 0)

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4 years ago
Evaluate the expression if xequalsminus1 and yequals7. <br><br> 5x over x-y
erica [24]
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3 years ago
What is 2\20 divided by 2
Valentin [98]
\frac{2}{20} \div 2 \\ \\  \frac{1}{10} \div 2 \\ \\  \frac{1}{10} \times  \frac{1}{2} \\ \\  \frac{1 \times 1}{10 \times 2} \\ \\  \frac{1}{20} \\ \\

The final result is: 1/20 or 0.05.
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4 years ago
Can somebody help me. Will Mark brainliest.
Alex17521 [72]
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