12) 2b+8a
13) 17y^2-22y
14) 9m^2n+7mn^2
15) 11y^2
16) 8x^2y
(w15w5)4m is the same as
4m(15w•5w)
This is because w•15 is still 15w and w•5 is still 5w, it’s just a way of organizing it!!! And it doesn’t matter if the 4m is behind or in front of the (w15w5) because you still distribute normally!
Now let’s distribute!
But wait, there has to be order of operations here !!!
PEMDAS
So let’s do 15w•5w which equals 75w^2 since 15•5 is 75 and when you are multiplying two variables together you get the variable, squared because w•w=w^2
Think of it as 2•2=4 which is 2^2!!!
So then we are left with 4m•75w^2 which is
300mw^2 this is because when you are multiplying two unknown variables you have to make them join together, so first let’s multiply the coefficients(the real numbers)!
75•4=300
then m•w^2 which is just mw^2!!
So the final answer is 300mw^2!!
Please give me brainliest, if you need any further help, please just tell me!!! If you need to contact me for further support add me on ig
@jessmyybest
30%
percent means parts out of 100 so 30%=30/100=3/10
42 is 3/10 of x
'of' can be translated to multiply
42=3/10 times x
multiply both sides by 10/3 to get rid of fraction
420/3=x
140=x
the number is 140
Answer:
r = 45 m.
Step-by-step explanation:
pi r^2 = 6358.5
r^2 = 6358.5 / pi
r = √(6358.5 / pi)
= 44.989 m
