This might have your answer, I'm so sorry if I'm wrong.
Look at the exponent and move the decimal that many places ( to the right for a positive number and to the left for a negative number)
Answer:
616 square centimeters
Step-by-step explanation:
Area of a circle is equal to pi × r^2. In this case, they have asked that you substitute 3.14 or 22/7 for pi, so I will be using 22/7, instead.
Diameter is equal to 2r; to find the radius, simply divide 28 by two. This gives us a radius of 14.
Multiply 14 squared by 22/7:
(22/7)(14^2)
This gives us (22/7)(196); (4312/7); 616.
Therefore, the area of the circle is approximately 616 square centimeters.
One company wants $10 per 3.5 hours, so they want 10 / 3.5 ≈ 2,86 dollars per hour (after rounding to the closest hundreths).
Second company wants $1.25 per half an hour, so they want 2 * 1,25 = 2,50 dollars per hour.
The unit rate is 2,86:2,50
There are 12 pencils.
<span>Red pencils + Blue pencils = 12 </span>
<span>There are twice as many red pencils as blue pencils </span>
<span>Red pencils = Blue x 2 </span>
<span>Substitute Red Pencils in the first question with blue x 2 </span>
<span>So the first equation is 2 x blue + blue = 12 </span>
<span>This will equal 3 blues = 12 </span>
<span>Divide both sides by 3 </span>
<span>Blues = 4 pencils </span>
<span>Reds = 2 x blues </span>
<span>Reds = 2 x 4 </span>
<span>Red = 8 pencils</span>