Step-by-step explanation:
3 girls:7 boys
50 students total
You have to multiply 7 by 5 to get 35
If you already multiplied one side by five, then you have to multiply the other side by five
3 times 5 is 15
15 + 35 = 50
So the
Answer is
35 boys
Answer:
3x + 11
Step-by-step explanation:
Remember BPEMDAS.
"Three times a number" is saying multiply 3 times a variable; in this case, <em>x</em>. So we have 3x
"The sun of 3x and 11" is saying add our 3x and 11, so: 3x + 11
Answer:
-10
Step-by-step explanation:
the upper right is the same (105°), therefore the left 75°
now you have 180 = 75 + x + 115
therefore: -10
Answer:
36.5
Step-by-step explanation:
16,22,26,35,38,38,45,61
2 middle numbers is 35 and 38.
Add them and you get 73 then divide by 2
The difference of course is the symbol between the f and g letters.
The circle 
notation means we're doing a function composition.
Writing 
is the same as saying 
where g is the inner function.
Here's an example
f(x) = x^2
g(x) = 3x
f( g(x) ) = ( g(x) )^2 ... note how x is replaced with g(x)
f( g(x) ) = ( 3x )^2
f( g(x) ) = 9x^2
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On the other hand, the dot notation means we multiply the f(x) and g(x) functions.
Going back to the previous example, we could say
