So...the diameter is increasing at a rate if 2cm/minute, therefore the radius (1/2 the diameter) is increasing at half the rate. You will learn how to calculate the rate of change at a specific point in time in calculus.
Answer:
3(7x-3)
Step-by-step explanation: I factor it.
A = pi * r^2
<span>A = 3.14 * 50^2 </span>
<span>A = 7,850 square miles (area of the 50 mile broadcast signal)
A = pi * r^2
A = 3.14 * 75^2
A = </span>17,662.5 = 17,663 square miles (area of the 75 mile relayed signal)
Now we just need to subtract the 50 mile signal from the 75 mile signal, so:
17,663 - 7,850 = <span>9,813 square miles greater
Hope this helps :)
</span>
Answer:
-7
Step-by-step explanation:
(7 4/9 −8)∙3.6–1.6∙( 1/8 − 3/4 )+1 2/5 ÷(−0.35)
PEMDAS, parenthesis
-5/9∙3.6–1.6∙(1/8-6/8)+1 2/5 ÷(−0.35)
PEMDAS, division
-5/9∙3.6–1.6∙-5/8-4
PEMDAS, multiplication
-5/9∙ 18/5– 8/5 ∙-5/8-4
-2-1-4
PEMDAS, subtraction
-7
Hope this helps! Please mark brainliest :)
