Answer:
∠b = 88 - 5x
Step-by-step explanation:
If a and b are complementary, then sum of two angles is 90
∠a + ∠b = 90
5x + 2 + ∠b = 90
∠b = 90 - 5x - 2
∠b = 88 - 5x
Answer:
Similar triangles states the length of the corresponding sides are in proportion.
In a given similar triangles:
Labelled the diagram:
Triangle BAC and triangle DAC are similar.
then;
Corresponding sides:
AB = x units , BC = 5 units, AD = 15 units and DC = BD-BC = 8-5 = 3 units

By cross multiply we get;

Simplify:

Divide both sides by 3 we get;

Simplify:
x = 25 units
Therefore, the value of x is 25 units.
11 is 97
12 is -7
13 is 75
14 is 2
15 is -40
I think there is a mistake in 16
17 is 13
18 is 5
Answer:
The circumference is 62.8 cm.
Step-by-step explanation:
To find the circumference, use 3.14 * 20 = 62.8
Answer:
minimum cost is 70 cents when Greg buys 3 pill type 1, and 2 pills type 2.
Step-by-step explanation: