Answer:
15) A
Step-by-step explanation:
4x-2 + 7x + 17 = 180
11x + 15 = 180
11x = 165
x = 15
Answer:
(4, -2 1/2)
Step-by-step explanation:
The 4 is positive because it goes to the right on the x axis, and the 2 1/2 is negative because it goes down on the y axis.
Answer:
1167 girls.
Step-by-step explanation:
If 4/7 are boys then 1 - 4/7 = 3/7 are girls.
So the number of girls = 3/7 * 2723
= 1167.
Answer:
9
Step-by-step explanation:
the triangle is right angle.
at right angle it makes 90°. therefore;
(3d+1)°+(6d+8)°=90°
3d+1°+6d+8°=90°
9d+9°=90°.
9d=90°-9°
9d=81°
d=81/9
d=9°
Option 2 - a + bc / a - bc
