Answer:
Step-by-step explanation:
The two triangles are similar.
The corresponding sides are proportional.
AB ∼ FH
AC ∼ FG
BC ∼ GH
Answer:
17
Step-by-step explanation:
Would you mind giving me brainliest?
Answer:
5 feet per 1 cm
Step-by-step explanation:
Answer:
The answer is 5 feet.
Step-by-step explanation:
Set up a proportion.
3/15 = 1/x (x being the number of feet)
Cross multiply.
3x = 15
Solve for x. (divide both sides by 3)
x = 5
I hope this helps! :)
Answer:
19.8 or 19 4/5
Step-by-step explanation:
Step 1: Set up the expression.
Step 2: Simplify.
Therefore, the answer is 19.8 or 19 4/5.
Answer:
0.5
Step-by-step explanation:
An uniform probability is a case of probability in which each outcome is equally as likely.
For this situation, we have a lower limit of the distribution that we call a and an upper limit that we call b.
The probability that we find a value X higher than x is given by the following formula.
The mail arrival time to a department has a uniform distribution over 5 to 45 minutes.
This means that .
What is the probability that the mail arrival time is more than 25 minutes on a given day?
So the probability that the mail arrival time is more than 25 minutes on a given day is 0.5.
Answer:
(a) ⅛ tan⁻¹(¼)
(b) sec x − ln│csc x + cot x│+ C
Step-by-step explanation:
(a) ∫₀¹ x / (16 + x⁴) dx
∫₀¹ (x/16) / (1 + (x⁴/16)) dx
⅛ ∫₀¹ (x/2) / (1 + (x²/4)²) dx
If tan u = x²/4, then sec²u du = x/2 dx
⅛ ∫ sec²u / (1 + tan²u) du
⅛ ∫ du
⅛ u + C
⅛ tan⁻¹(x²/4) + C
Evaluate from x=0 to x=1.
⅛ tan⁻¹(1²/4) − ⅛ tan⁻¹(0²/4)
⅛ tan⁻¹(¼)
(b) ∫ (sec³x / tan x) dx
Multiply by cos x / cos x.
∫ (sec²x / sin x) dx
Pythagorean identity.
∫ ((tan²x + 1) / sin x) dx
Divide.
∫ (tan x sec x + csc x) dx
Split the integral
∫ tan x sec x dx + ∫ csc x dx
Multiply second integral by (csc x + cot x) / (csc x + cot x).
∫ tan x sec x dx + ∫ csc x (csc x + cot x) / (csc x + cot x) dx
Integrate.
sec x − ln│csc x + cot x│+ C
Answer:
(a) Solution : 1/8 cot⁻¹(4) or 1/8 tan⁻¹(¼) (either works)
(b) Solution : tan(x)/sin(x) + In | tan(x/2) | + C
Step-by-step explanation:
(a) We have the integral (x/16 + x⁴)dx on the interval [0 to 1].
For the integrand x/6 + x⁴, simply pose u = x², and du = 2xdx, and substitute:
1/2 ∫ (1/u² + 16)du
'Now pose u as 4v, and substitute though integral substitution. First remember that we have to factor 16 from the denominator, to get 1/2 ∫ 1/(16(u²/16 + 1))' :
∫ 1/4(v² + 1)dv
'Use the common integral ∫ (1/v² + 1)dv = arctan(v), and substitute back v = u/4 to get our solution' :
1/4arctan(u/4) + C
=> Solution : 1/8 cot⁻¹(4) or 1/8 tan⁻¹(¼)
(b) We have the integral ∫ sec³(x)/tan(x)dx, which we are asked to evaluate. Let's start by substitution tan(x) as sin(x)/cos(x), if you remember this property. And sec(x) = 1/cos(x) :
∫ (1/cos(x))³/(sin(x)/cos(x))dx
If we cancel out certain parts we receive the simplified expression:
∫ 1/cos²(x)sin(x)dx
Remember that sec(x) = 1/cos(x):
∫ sec²(x)/sin(x)dx
Now let's start out integration. It would be as follows:
Solution: tan(x)/sin(x) + In | tan(x/2) | + C
Answer:
Here we have the case where:
"one chip is eaten in 1/4 mins."
(that means unit rate, the amount of a given variable that we need to do a unit of another variable)
Then the unit rate would be:
4 chips per minute.
Or, in a more mathematical way to write this:
4 chips/min.
Now we could write this in other units, for example.
We know that 1 min = 60s.
Then we have that (1/4) min = 60s/4 = 15s.
Then we have the unit rate:
1 chip every 15 seconds, or:
(1/15) chips/second.
Now, the variable in this case is time, t = time, let's multiply bot our unit rates by the same amount of time, and see if we have the same outcome.
Let's use t = 2 min.
1) (4chips/min)*2min = 8 chips.
2) ((1/15) chips/second)*2min
First, 2 min = 120 seconds.
((1/15) chips/second)*2min = ((1/15) chips/second)*120seconds = 8 chips.
So both unit rates are equivalent.