Working is a bit of a mess, but vertically she's correct, but she's incorrect horizontally
Answer:
Step-by-step explanation:
Complementary angles are angles whose sum is equal to 90°.
m∠1 = 5x + 4
m∠2 = 7x + 2
m∠1 + m∠2 = 90°.
5x + 4 + 7x + 2 = 90
12x + 6 = 90
12x = 90 - 6
12x = 84
12x / 12 = 84/12
x = 7 Choice B.
m∠1 = 5x + 4 = 5(7) + 4 = 35 + 4 = 39
m∠2 = 7x + 2 = 7(7) + 2 = 49 + 2 = 51
39 + 51 = 90
90 =90
Answer:
D. For a ratio of 3:2, divide AB into 5 equal parts. Each equal part is 2 units, so the point that divides AB into a 3:2 ratio is 2.
Step-by-step explanation:
The complete question is:
<em>Point A is at –4 and point B is at 6. Which describes one way to find the point that divides AB into a 3:2 ratio? </em>
- In a 3:2 ratio there are 3 + 2 = 5 equal parts.
- The distance between points A and B is: 6 - (-4) = 6 + 4 = 10 units.
- Each equal part is 10/5 = 2 units.
- Point 2 is at 2 - (-4) = 6 units from -4
- Point 2 is at 6 - 2 = 4 units from 6
- Ratio 6:4 is equivalent to ratio 3:2
the ratio that compares a number to 100 is called percent
