Answer:
7.07
Step-by-step explanation:
If you substitute in 0 for x:
2(0)^2 + 5sqrt(2)
You'd end up with 5 root 2, which is 7.07
If it’s Kano look it up there is either a pdf or a pic of all the answers
Answer:
C
Step-by-step explanation:
2.90x25 = 72.50 15.78x25 = 394.50 subtract 72.50 from 394.50 which equals C
Answer:
One number, let's call it x, is 6 more than twice the other number, let's say this number is y.
x= 2y+6
x+y=21
We're left with a system of equations.
If we substitute the first equation in the second we find the value of y.
(2y+6)+y=21
3y+6=21
3y=15
<u><em>y=5</em></u>
Now that we have found the value of y, we can take that value and substitute it in the second equation (since it's easier) to find the value of x.
x+ (5)=21
<u><em>x=16</em></u>
<u><em>Now to check if our answers are correct, we plug in both values into any equation and see if they equate.</em></u>
x+y=21
(16)+(5)=21
21=21
Our solution is correct!