Answer:
(x, y) = (5, 1)
Step-by-step explanation:
To <em>eliminate</em> x, you can double the second equation and subtract the first.
... 2(x +4y) -(2x -3y) = 2(9) -(7)
...11y = 11 . . . . . simplify
... y = 1 . . . . . . divide by 11
Using the second equation to find x, we have ...
... x + 4·1 = 9
... x = 5 . . . . . subtract 4
_____
<u>Check</u>
2·5 -3·1 = 10 -3 = 7 . . . . agrees with the first equation
(Since we used the second equation to find x, we know it will check.)
All you have to do is subtract 38 from 45 to get 7 as your answer.
We have the next formula to calculate the volume
where a is the length of the side in the base and h is the height
a=11cm
h=15cm
we substitue the values in the formula
Answer:
-4/3
Step-by-step explanation:
The second with the mistake is that
-4 minus 2 would be -6
Answer:
33
Step-by-step explanation:
(3×3 )+(1/2 ×3×4) ×4 = 33
