The surface area of the sphere is given by:
The volume of the sphere is:
Step-by-step explanation:
Explanation:
9
:
x
as
x
:
4
∴
9
x
=
x
4
x
2
=
36
x
=
±
√
36
x
=
±
6
Answer:
She forgot that she took 2 hours instead of 1 hour so the equality should be 2d>16 or 1d>8.
Step-by-step explanation:
The answer is C and E.
We need to first understnad that percentage can be converted into decimal numbers and fraction:
100% = 1.0 or 100/100
Hence:
40% = 0.4 or 40/100
To find the percentage of number, we use multiplication (which is also represented by the dot in the above options).
As C. and E. has the correct value, they are the correct answers.
Hope it helps!
Given: 11-pound mixture of peanuts, almonds, and raisins
Cost:
peanuts - 1.5 per pound
almonds - 3 per pound
raisins - 1.5 per pound
mixture:
twice as many peanuts as almond; total cost of mixture is 21.
a + p + r = 11 lbs
a + 2a + r = 11 lbs
3a + r = 11
r = 11 - 3a
1.5(2a) + 3a + 1.5r = 21
3a + 3a + 1.5r = 21
6a + 1.5r = 21
6a + 1.5(11-3a) = 21
6a + 16.5 - 4.5a = 21
6a - 4.5a = 21 - 16.5
1.5a = 4.5
1.5a/1.5 = 4.5/1.5
a = 3
almonds = 3 lbs
peanuts = 2a = 2(3) = 6lbs
raisins = 11 - 3a = 11 - 3(3) = 11 - 9 = 2 lbs
<span>My answer is: C. 6 lbs peanuts, 3 lbs almonds, 2 lbs raisins </span>