Answer:
20
Step-by-step explanation:
2(a+3b)=2(10)
Answer:
C
All Real Numbers, this is because it has infinitely MANY solutions.
Step-by-step explanation:
Answer: 7 inches
Step-by-step explanation:
If x is the first piece, and the second piece is twice as long, then the second piece is 2x.
If the third piece is three times as long as the first piece, x, then the third piece is 3x.
The 42-inch board must be equal to all 3 pieces, so we will set up an equation and solve for x.
42 = x + 2x + 3x
42 = 6x
42 = 6x
7 = x
The first piece is 7 inches long.
<em>Learn more about </em><em>your question</em><em> here: brainly.com/question/20320071</em>
First, you have to find the LCD. The LCD of 4 and 7 is 28, so you rewrite the fraction:
7/28
4/28
Then you add them.
