Answer:
5x+3. Explanation: (f+g)(x)=f( x)+g(x). =2x−6+3x+9=5x+3
Answer:
x=1
Step-by-step explanation:
To get the 7 away, we need to multiply it into the parentheses.
7*-10= -70
7*3=21
-70+21x= -49
Now we combine like terms and we move 70 over. Because we're moving it to the other side of the equation, it becomes positive.
21x= -49+70
-49+70 is the same as 70-49
70-49= 21
Now we put it together.
21x=21
To get the x by itself, we need to divide 21 on both sides.
21x/21= 21/21
21/21=1
x=1
The answer is 19
work :
1-multiply the numbers by a submultiple of 10 to remove the decimal points.
2-
now do the division :
so the answer is 19
note: there is no need to get it back to decimal number unless you multiply just one of the numbers or multiply the numbers with different submultiples of 10
good luck
Answer:
x+y=220.21x+0.09y=2.86
Step-by-step explanation:
i did the test just now
There are many ways to prove this theorem.On the picture you can see one.
So, here we use the third sign of equality of triangles: by three sides.