Answer:
168 girls
Step-by-step explanation:
420 × 0.40
= 168
Answer:
The cost of one ticket is $9
Step-by-step explanation:
we have
4x+12=48
where
x represents the cost of a ticket
Solve for x
Subtract 12 both sides
4x=48-12
4x=36
Divide by 4 both sides
x=36/4=9
therefore
The cost of one ticket is $9
Answer:
x=1
Step-by-step explanation:
First find a common denominator between 7 and 4 which is 28, Multiply both equations by 28 eliminating the denominators so now you have theses two equations: 4(2x + 12) = 7(3x + 5) distribute these equations to get:
8x + 48 = 21x +35 now you want to get the x's on one side so 8-21 = -13 which as an equation so far would be -13x + 48 = 35 now do 35-48 = -13 so you can have 13x alone on one side. Your final equation now before you solve is
-13x = -13 the divide -13 by -13 to get 1.
Hope this helps you understand it better
Answer:
The answer is D AC because that line is opposite of angle B
Answer:
s = sqrt [ Σ ( x i - x ) 2 / ( n - 1 ) ]
Step-by-step explanation:
where s is the sample standard deviation, x is the sample mean, x i is the ith element from the sample, and n is the number of elements in the sample. And finally, the standard deviation is equal to the square root of the variance.
