Answer:
9 hours
Step-by-step explanation:
10 portraits in 30 hours, let's write it mathematically
10p=30h then 1p=(30/10)h= 3 h three hours for a single portrait
therefore for 3 portraits he will take three times 3 hours
3p=3*3h = 9 hours
1 cm = 10 mm so that being said 5 cm would equal to 50 mm
A couple of rules to review:
#1). Ln(the square root of a number) = 1/2 Ln(the number)
and
#2). e^(Ln of a number) = the number
Now we're all set to solve this thing.
=======================================
<u>Ln( square root of(x+2) ) = 3</u>
From Rule #1: 1/2 Ln (x+2) = 3
Multiply each side by 2: Ln (x+2) = 6
From Rule #2: (x + 2) = e^6
(x + 2) = 403.43 (rounded)
Subtract 2 from each side: <em> x = 401.43</em> (rounded)
Answer:
B
Step-by-step explanation:
The formula for finding the relationship between a secant and a tangent is
tangent length ^2 = external segment secant/full length of secant
In this case
60^2 = 48*(x + 48) Expand
3600 = 48*(x + 48) Remove the brackets/
3600 = 48x + 48^2 Expand
3600 = 48x + 2304 Subtract 2304 from both sides
3600 - 2304 = 48x
1296 = 48x Divide both sides by 48
1296 / 48 = x
x = 27
They are pairs on the corridinant