Answer:
D. x * 45
Step-by-step explanation:
this is unknown number, everyone can't answer if there is that mark (*)
Answer:
1) Antonio's statement
2) <A = 123
Step-by-step explanation:
1) Antonio's statement is incorrect. This is because the opposite angles of a quadrilateral add up to 180°. Erin was incorrect because the opposite angles of this quadrilateral are unequal.
2) 2x+7+5x-2 = 180° (opposite angles of quadrilateral)
Now
7x+5 = 180
7x = 175
x = 25
<A = 5x-2
= 5(25)-2
= 125-2
= 123
Answer: 63/2π
Step-by-step explanation: C=πd
63=πd
D=63/π
r=1/2d
1/2×63/π=<u>63/2π</u>
1/2 = 4/8
3/4 = 6/8
5/8
or 0.625
12 students
Step-by-step explanation:
40 % ×30 students = 1200 ÷ 100% =12students
