Answer:
10
Step-by-step explanation:
because there are 20 girls and 10 boys = 30
Answer:
A
Step-by-step explanation:
The y factors of the given quadratic equation is -1 and 40/22.
According to the statement
we have given that the equation and we have to find the factors of those equation.
So, The given equation is:

where y is the factors of that equation.
So, we have to find the factors of the given quadratic equation.

Then after solving it become

Then take negative sign common from it then

Make the factors of this quadratic equation

Now take common values 22x and 40 from the equation then

Then it become

Then the values of x become from the equation is

The value of the factors y is -1 and 40/22.
So, The y factors of the given quadratic equation is -1 and 40/22.
Learn more about Quadratic equation here
brainly.com/question/24334139
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22-7-7-7=1 this will show that you can subtract 7 three times from 22 and have a remainder of 1.
Answer:
∠ YVZ = 56°
Step-by-step explanation:
∠ WVZ = 90° ( given ), thus
∠ WVY + ∠ YVZ = 90, substitute values
2x + 3x + 5 = 90
5x + 5 = 90 ( subtract 5 from both sides )
5x = 85 ( divide both sides by 5 )
x = 17
Thus
∠ YVZ = 3x + 5 = 3(17) + 5 = 51 + 5 = 56°