Answer:
Answer = 235.5
Step-by-step explanation:
Cone volume formula is V = 1/3 * pi * r^2 * h
V = 1/3 * 3.14 * 5^2 * 9
V = 235.5
Answer:
The length of the arc is 2.25 units.
Step-by-step explanation:
The circumference of a circle is , where r is radius of the circle.
Total angle of a circle in degree is 360°.
Length of central angle formula
Given that,
A circle has a circumference of 5 units.An arc in the circle has a central angle of 162°.
Then,
=2.25 units.
The length of the arc is 2.25 units.
Answer:
£21
Step-by-step explanation:
Cost of 18 drinks = £54
Cost of 1 drink
= Cost of 18 drinks/18
= £54/18
= £3
Cost of 7 drinks
= Cost of 1 drink × 7
= £3 × 7
= £21
5000 grams .....................
For finding the solution to something like this, it makes sense to write a function of x that is zero at the solution value. That function might be obtained by subtracting the right side from the equation.
f(x) = (2^-x +1) - (5^x +2)
Now, we want to find x so that f(x) = 0.
For the offered choices, we get
f(-1.50) ≈ 1.74
f(-0.50) ≈ -0.03
f(0.75) ≈ -3.75
f(2.50) ≈ -56.72
The obvious choice is
x = -0.50