I need help on 15 and 16

Mathematics

1 answer:

Luden [163]4 years ago

3 0

Answer:

15.C

16.H

Step-by-step explanation:

15.

(3×10^8)/(3.4×10²)=(300×10^6)/(34×10)=9×10^5

16.

y²=64

y²-64=0

(y-8)(y+8)=0

y=8 or -8

You might be interested in

What is the median age

jeka57 [31]

Median age is the age that divides a population into two numerically equally sized groups - that is, half the people are younger than this age and half are older. It is a single index that summarizes the age distribution of a population.

3 0

3 years ago

A plane is flying 3900 m above the ground level. The angle of elevation from the control tower to the plane is

Tcecarenko [31]

The horizontal distance to the control tower is approximately 18506.83m

Data;

distance from the ground = 3900m
angle of elevation = 11.4 degrees
horizontal distance = ?

<h3>Trigonometric Ratio</h3>

To solve this problem, we need to use trigonometric ratio SOHCAHTOA.

In this case, we have the value of opposite and angle and we need to find the adjacent to the angle. The tangent of the angle would be perfect for this.

$tan\theta = \frac{opposite}{adjacent} \\tan11.4 = \frac{3900}{x}\\x = \frac{3900}{tan11.4}\\ x = 18506.83m$