You have three unknowns: examination hours, workshop hours and lecture hours. Then, we assign variables.
Let:
x - examination hours
y - workshop hours
z - lecture hours
Then, we formulate equations based on the relationships given.
x = 2y --> eq 1
y = 2z --> eq 2
Substituting eq 2 to eq 1,
x = 2(2z)
x = 4z
z = x/4
Therefore, the lecture hours cost one-fourth of the cost of the examination hours.
Answer:
One triangle
Step-by-step explanation:
step 1
Find the measure of side AC
In the right triangle of the left
----> by SOH (opposite side divided by the hypotenuse)
step 2
Find the measure of angle B
Applying the law of sines
substitute the given values
step 3
Find the measure of angle C
Remember that the sum of the interior angles of a triangle must be equal to 180 degrees
so
step 4
Find the measure of side AB
Applying the law of sines
substitute the given values
Each measure of the ABC triangle can only have one value, therefore only one triangle can be make with the given measures
Step-by-step explanation:
Answer:
162
Step-by-step explanation:
The number with "1" digit starts with 101 then 110 and so on.