3 years ago

4/7 × 28 simplified

Mathematics

1 answer:

crimeas [40]3 years ago

3 0

The answer would be 16

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3 years ago

A car's velocity changes at a rate of 36 miles per hour in 0.5 hour.

kotegsom [21]

Answer:

Step-by-step explanation:

In order to find the acceleration we need first to defined it, so:

acceleration=((final velocity)-(initial velocity))/time interval

$a=(vf-vi)/dt$

But (vf-vi) actually represents the velocity change, so (vf-vi)/dt represents the velocity change rate. This means that in our case:

$a=(36miles/hour)/(0.5hours)$

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In conclusion the acceleration is $a=72miles/hour^2$ , without units just 72.

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3 years ago

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mezya [45]

Answer:

$x=60^{\circ}$

Step-by-step explanation:

The angle formed by $48+x$ and the angle marked as $72^{\circ}$ are co-interior angles and therefore must be supplementary (add up to 180 degrees).

Therefore, we have:

$48+x+72=180,\\x+120=180,\\x=\boxed{60^{\circ}}$

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3 years ago

Please hurry im in a timed test

Mnenie [13.5K]

Answer:

$x^2-7x+12$

Step-by-step explanation:

$(x-3)(x-4)=\\x \cdot x + x \cdot -4 +x \cdot -3 + -3 \cdot -4=\\x^2-4x-3x+12=\\x^2-7x+12$

Hope this helps!

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3 years ago

What is the 5% sales tax on a $14.00 compact disc

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