Answer:
see explanation
Step-by-step explanation:
Given A is directly proportional to r² then the equation relating them is
A = kr² ← k is the constant of proportion
To find k use the condition when r = 5, A = 75 , then
75 = k × 5² = 25k ( divide both sides by 25 )
3 = k
A = 3r² ← equation of proportion
(a)
when r = 4, then
A = 3 × 4² = 3 × 16 = 48
(b)
when A = 147 , then
147 = 3r² ( divide both sides by 3 )
49 = r² ( take the square root of both sides )
r = 
= 7
Answer:
-7/15
Step-by-step explanation:
-4/5 translates to -12/15 and 1/3 translates to 5/15.
When you add -12/15+5/15 you get
-12+5/15 so you get -7/15
Hello there.
Question: <span>If you drew a marble from a bag containing 24 marbles and you had a 1/3 probability of drawing a red marble, How many red marbles are in the bag?
Answer: 1/3 is just a simplified version of the original fraction.
To find this out, get the denominator to the total of 24.
24 / 3 = 8.
You multiply the bottom by 8 therefore you need to do the same to the top.
In short, Your answer is </span>
.The number of red marbles is
8.
Hope This Helps You!Good Luck Studying ^-^
We know that
360°/12 hour-----------> 30°/hour
<span>Central angle at 4 .00 is 120 degrees
the radius of a clock is 6/2-----> r=3 in
length of a circumference=2*pi*r-----> 2*pi*3----> 18.84 in
the minor arc at 4 .00 is for a central angle of 120</span>°
so
if 360° (full circle)---------> has a length of 18.84 in
120°----------------------> X
X=120*18.84/360-------> X=6.28 in
the answer is
6.28 in
