Answer: x = 10 y=20
Step-by-step explanation:
You can answer this question by plugging in each equation:
2x=y, x+y=30. Let us plug y as 2x in the second equation x+y=30
x+2x= 30
3x= 30
x=10
After we found x we can then find y by plugging the 10 for x.
2(10) = y
y =20
or you could plug in the other equation
10+y=30
subtract 10 from 30 and we get 20
to double check we can plug in both numbers
2(10) = 20 which is correct
and 10 + 20 = 30 which is correct
Answer:
4. 2(3k+4y-14).
5. 76+34.9.
6.10t-8
Step-by-step explanation:
4.since it's 6k+8y-14 all of the numbers can be divided by 2 then the you just put a 2 in front of everything and then(3k+4y-14).
5. (22+11.5x)+(54+23.4x).
=(22+54)+(11.5x+23.4x).
=76+34.9x.
=34.9x+76.
6.(9t-3)+(-5+t).
=(9t+t)+(-3-5).
=10t-8.
9x^2 should be the sqrt(81x^4)
Answer:
=16+9=25
Step-by-step explanation:
