A. The perimeter of a right triangle is given by summing all the sides.
4x + 2 + 7x + 7 + 5x - 4
x + 3 + 2x - 5 + x + 7
b. I think you have to combine like terms of the expressions.
16x + 5
4x + 5
c.
Large triangle: 4(3) + 2 + 7(3) + 7 + 5(3) - 4 = 12+2+21+7+15-4 = 53
Small triangle: 3 + 3 + 2(3) - 5 + 3 + 7 = 3+3+6-5+3+7 = 17
Add the like terms (varibles) on both sides if their the same
Answer:
1 : 4
Step-by-step explanation:
Let x represent the amount of 30% solution for 1 unit of 5% solution. Then the amount of acid in the mix is ...
0.30x + 0.05·1 = 0.10·(x +1)
0.30x + 0.05 = 0.10x + 0.10 . . . . eliminate parentheses
0.20x = 0.05 . . . . . . . . . . . . . . . . subtract 0.05+0.10x
x = 0.05/0.20 = 1/4
That is, the ratio x : 1 is 1 : 4.
Answer:
<em>The answer is 6</em>
Step-by-step explanation:
<em>2 + 2 + 2 = 6</em>
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