First move +4 to the other side remembering to change the sign:
9x = 103 - 4
Do the subtraction:
9x = 99
Divide both sides by 9:
x = 11
This figure is four congruent triangles, so we just need to find the area of one, then multiply it by 4.
The area of a triangle is (1/2)bh where <em>b</em> is the base length and <em>h</em> is the height. In this case, b=21 and h=16
A = (1/2)bh
(1/2)·21·16
(1/2)·336
168 ← This is the area of one triangle, so then we multiply it by four:
4 · 168 = 672 in²
Answer:
x=7
Step-by-step explanation:
Answer: b=-2.7
Explanation: it’s right trust me
Answer: 150 people voted in the election.
Step-by-step explanation:
Let x = Total number of votes.
Mason got votes.
Isabella got 40 votes, Amelia got 60 votes.
Then,
Combined votes =
Hence, 150 people voted in the election.