To solve for the total number of 12 – flag signals Sally
can make, we need to make use of the formula:
total flags = d! / (a! b! c!)
Where,
d = is the number of flags to create a signal = 12
a = number of red flags = 5
b = number of green flags = 3
c = number of white flags = 4
We can observe from the equation that the individual
number of flags is factored out (or divided from) that is because all the 5 red
flags are similar, all the 3 flags are similar and all 4 flags are similar.
Going back into the equation, by substituting and
calculating:
total flags = 12! / (5! 3! 4!)
total flags = 27,720
<span>Therefore there are about 27,720 different 12-flags
signals.</span>
Answer:
The answer is A (97.5)
Step-by-step explanation:
Formula Using the Diagonals
That means the two diagonals form two sides of a square that is twice the size of the rhombus. You can find the area in square units of the rhombus by multiplying the lengths of the two diagonals (d1 and d2 ) and dividing by two.
(13)(15)
/2
=
195
/2
(Decimal: 97.5)
Please mark brainliest!
Answer:
x = 1 y = 1
Step-by-step explanation:
Pythagoras' Theorem:
a = 1
b = 1 Let's substitute a and b into the equation to work out what c, the hypotenuse, is. C needs to equal so if this doesn't give us the answer, then we have to use another of the values given.
Here, we substitute in the values.
Here, we simplify the
Next, we have to square root to give us the hypotenuse.
c = Therefore, x = 1 and y = 1
I hope that helps you, buddy!!
I=10^(1-0.13x)
When I=4.2, then:
4.2=10^(1-0.13x)
ln 4.2=ln(10^(1-0.13x))
ln 4.2=(1-0.13x)ln (10)
1-0.13x=ln 4.2 / ln 10
-0.13 x=(ln 4.2 /ln 10)-1
x=[(ln 4.2/ ln 10)-1] /(-0.13)
x=-0.37675/(-0.13)
x=2.898...≈2.9
Answer: The depth of water at which most aquatic plansts recieve the requred light would be 2.9 m