Step-by-step explanation:
the first question
x-2/5=7
you need to use the same rules as pemdas but sorta in reverse. starting with multiplying 7 by 5, which is 35
x-2= 35
then you would add 2 to 35
making the answer x=37
You'd follow the same steps for the second one.
let me know if you have any questions
I hope this helped
Answer:
its 6+7 minus8 divided by 4 square rooted =4.5
Step-by-step explanation:
Answer:
The only thing you will do is to plug the x in the equation.
x = -2 ---> f(x) = -6
x = 0 ---> f(x) = 0
x = 3 ---> f(x) = 9
x = 7 ---> f(x) = 21
f(x) = 3x
f(-2) = <u>3(-2)</u>
f(-2) = -6
f(0) = <u>3(0)</u>
f(0) = 0
f(3) = <u>3(3)</u>
f(3) = 9
21 = 3x
<u>21 / </u><u>3</u> = <u>3x / 3</u>
7 = x
Hope this helps, thank you :) !!
Answer:
27 guests
Step-by-step explanation:
1. 1guest=2/9 pounds
x =6 pounds
2. x=6 pounds/ 2/9pounds
3. x=6 pounds * 9/2 pounds
4.x=27 guests
