Answer:
Answer : 52 girls
Step-by-step explanation:
Your ratio of boys to girls is 3:4
Set up a fractional proportion and cross multiply
3/4 = 39/x
cross multiply
3x = 4(39)
3x = 156
x = 156/3
x = 52 girls
Hope this was helpful!❤
Xy=18
y=2x
y = 18/x
y = y
2x = 18/x
2x(x) = 18(1)
2x^2 = 18
x^2 = 18/2
x^2 = 9
so x = square root of 9 = 3
x = 3.
Answer:
two: +1 and -1
Step-by-step explanation:
If a number is equal to its own reciprocal, it will satisfy the equation ...
x = 1/x
Multiplying by x and subtracting 1 gives ...
x^2 -1 = 0
This factors as ...
(x -1)(x +1) = 0
By the zero product rule, the solutions are those values of x that make one or more factors zero:
x = 1
x = -1
There are two self-reciprocals.
Answer: 800?
Step-by-step explanation: wild guess
Answer:
Step-by-step explanation:
Let's solve your equation step-by-step.
36p=5p(7.5)
Step 1: Simplify both sides of the equation.
36p=37.5p
Step 2: Subtract 37.5p from both sides.
36p−37.5p=37.5p−37.5p
−1.5p=0
Step 3: Divide both sides by -1.5.
−1.5p
−1.5
=
0
−1.5
p=0
