Answer:
1st, 3rd and 4th
Step-by-step explanation:
Only 2nd is false
Answer:
0.51 cm
Step-by-step explanation:
In right triangle MNP, MP = 4 cm, m∠N = 90°, m∠P = 21°
By the sine definition,

Now, consider right triangle HMN (it is right because NH is an altitude). By the cosine definition,

In the right triangle, two acute angles are always complementary, so

Thus,

Answer:
mode
Step-by-step explanation:
mode is the number that has the highest occurrences in a set of numbers
- 3.9 / 1.3 = - 3/1 = - 3
Calculation Steps:
Conversion:
3.9 = 39/10
Unary Minus:
- 3.9 = - 39/10
Conversion:
1.3 = 13/10
Divide:
- 39/10 : 1.3
= - 39/10 * 10/13
= - 39 * 10/ 10 * 13
= - 390/130
= - 3
Answer: - 3
Hope that helps!!!! Answer: - 3