C because 6 x 5 is 30 and 6 x 8 is 48
So
6(5/8) = 30/48
The surface area of a regular tetrahedron with edge length s is
... A = (√3)s²
For your edge length of 4 inches, the surface area is
... A = (√3)(4 in)² = 16√3 in²
Answer: 19
Step-by-step explanation:
Their running paths form the legs of an isosceles right triangle. The hypotenuse of such a triangle (the distance between Steve and Scott) is √2 times the length of one leg. Each has run 10 miles in the hour since they split.
They are running at 10 miles per hour.
Answer:
the amount of money Ian invested is P = £2,500
Step-by-step explanation:
The standard formula for compound interest is given as;

Where;
A = final amount/value
P = initial amount/value (principal)
r = rate yearly
n = number of times compounded yearly.
t = time of investment in years
For this case, Given that;
A = £2652.25
t = 2 years
n = 1 (semiannually)
r = 3% = 0.03
substituting the given values into equation 1;

P = £2,500
the amount of money Ian invested is P = £2,500