Answer:
The area would be 301 if x=5.
Step-by-step explanation:
Given expression is:
5x²+42x+16
We have to find the area when x=5
So putting x=5 in the given expression.
Area = 5(5)²+42(5)+16
Taking square of 5 and multiplying 42 by 5
Area = 5(25)+210+16
Area = 75+210+16
Adding all the terms
Area = 301
Hence,
The area would be 301 if x=5.
I will help u let me look at it
If I rounded 213.422 then it would be 213.4. Why? Because if you look at the 2 numbers on the right side of the decimal point, which would be 42, those r the only 2 numbers you have to round.. so if it was 45 or higher then the number would change to 50, if not then it would just round to 40. At the end of the problem you usually get rid of the rest of the numbers including 0.
So basically: If I round 213.(42)2, it equals 213.(40)
If I round 213.(45)2, it equals 213.(50)
-Always remember that the other #'s disappear-
Answer:
B AND E
Step-by-step explanation:
hope that helpsndbwbe
Answer:
the third one!
Step-by-step explanation:
Because it says, the SUM of the number, x (or z I can't really see it well) and 1/2, you must add those two together:
1/2 + x
Then it says those two numbers equal to 4, so it would look like this:
1/2 + x = 4
Because you are trying to isolate, and solve for x, you must SUBTRACT 1/2 from both sides of the equal sign:
1/2 + x = 4
-1/2 -1/2
1/2 minus 1/2 would result 0, so there would be x by itself. and 4 minus 1/2 would be 3 and a half ( 3 1/2), so x would be 3 1/2
x = 3 1/2
Hope this helped. If this is incorrect please specify so I can help :)