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cupoosta [38]
3 years ago
7

Value of expression 6 3/4(-11.5)

Mathematics
1 answer:
Olenka [21]3 years ago
0 0

Answer:

6 * 3/4 = 9 2 = 412 = 4.5

Step-by-ste

6 * 3/4 = 6/1  3*4 = 18/4 = 9/2

2 · 2 = 9/2

Multiply both numerators and denominators. Result fraction keep to lowest possible denominator GCD(18, 4) = 2. In the next intermediate step cancelling by a common factor of 2 gives 9

2

.

In words - six multiplied by three quarters = nine halfs.

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_____

<em>Alternate solution</em>

You can write the equation for the proportionality and find the constant that goes into it. If we use seconds (not 4-second intervals) as the time unit, then we can say ...

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Filling in the information related to the first 4 seconds, we have ...

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Then the distance equation becomes ...

... d = 5t²

After 12 seconds (the first 4 plus the next 8), the distance will be ...

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