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madreJ [45]
3 years ago
12

Twice a number decreased by 8 by 12 is 2 less than half the number what is the number?

Mathematics
1 answer:
natali 33 [55]3 years ago
7 0
Answer:
4
Step-by-step explanation:
with the information given, we can express the equation:

where is the unknown number?
to clear for first we multiply the equation by 2, to eliminate the fraction:

moving all terms with to the left:

and adding +16 to each side:

and finally, dividing by 3

the number is 4.
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Alecsey [184]
1.4
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Convert 90% to a decimal and round to the nearest thousandth place
EastWind [94]

Answer: .9

Step-by-step explanation:

You divide by 100 and get .9

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What is the circumference if the diameter is 21in and pi is 22/7
Ede4ka [16]

Answer:

66 in

Explanation:

the circumference can be calculated as:

C=d\cdot\pi

Where d is the diameter and π is 22/7.

So, replacing the values, we get:

C=21\cdot\frac{22}{7}=\frac{21\cdot22}{7}=\frac{462}{7}=66\text{ in}

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6 0
1 year ago
The hypotenuse of a 45-45-90 triangle measures 10√5 in.
Naddik [55]
Let x be the length of one leg ⇒
<span>By the Pythagorean theorem:</span>

x² + x² = (10√5)²
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x² = 250
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3 0
3 years ago
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(HELP ME!!!!!!!!!!!!)
Tomtit [17]

Bob travels within the speed limit.

For Bob to travel within the speed limit, the distance travelled by Bob in 3 hours must be less than the distance travelled gotten from the equation y = 70x.

<h3 /><h3>Maximum distance in 3 hours from the equation</h3>

With x = 3, y = 70(3) = 210 miles.

<h3></h3><h3>Bob's distance in 3 hours</h3>

From the straight line graph, Bob travels, 200 miles in 3 hours.

<h3 /><h3>Conclusion</h3>

Since this distance is less than that gotten from the equation, Bob travels within the speed limit.

So, Bob travels within the speed limit.

Learn more about straight line graphs here:

brainly.com/question/14808962

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