Answer:
7n + 14 and 7(n + 2)
Step-by-step explanation:
We know that since our triangle is isosceles, then two of the sides are the same. Given in the problem, we know that these two congruent sides are both 2n + 7. We also know the third side is 3n.
Perimeter is essentially just the sum of the side lengths of the figure. We simply need to add 2n + 7, 2n + 7, and 3n together:
P = 2n + 7 + 2n + 7 + 3n
Combine like terms:
2n + 2n + 3n + 7 + 7
7n + 14
That's one way we can write it. Another way is to factor out the 7:
7n + 14 = 7(7n/7 + 14/7) = 7(n + 2)
Thus, our two expressions are: 7n + 14 and 7(n + 2).
<em>~ an aesthetics lover</em>
Answer:
A line is at a degree of 180, so the line 170 is on can give you the degree of the smallest angle: 10. A traingel has a total degree of 180, so 125 + 10 = 135. Take 180 and subtract 135 to get x = 45º
Step-by-step explanation:
Answer:
2h+2k
Step-by-step explanation:
70 miles = 1 hour
Divide by 70 through to get 1 mile ..
(70 ÷ 70) miles = (1 ÷ 70) hour
1 mile = 1/70 hour
Multiply by 400 through to get 400 miles
1 x 400 miles = 1/70 x 400 hours
400 miles = 5 5/7 hours