9514 1404 393
Answer:
25°
Step-by-step explanation:
The relevant trig relation is ...
Sin = Opposite/Hypotenuse
sin(?) = 25/60
? = arcsin(25/60) ≈ 24.62°
The indicated angle is about 25°.
Answer:
B. 30°
Step-by-step explanation:
Answer:
When a relationship is proportional, all y over x ratios simplify to the slope of the line which is the constant of proportionality or the unit rate, with one as a denominator. Example: Consider the equation y = 60x. The slope is 60. The rate of change is 60 units for every one unit.
Step-by-step explanation:
Your quotient is undefined if under the root you have a value <0
this means the value has to be >=0
so 15(x-1)>=0
(x-1)>=0
x>=1 which is option B
Answer: the 4th boy is 11
Step-by-step explanation:
Let's denote the age of the boys as: x₁, x₂, x₃, x₄.
Then,
Multiply both parts of the equation by denoting by 3:
x₁+x₂+x₃=15(3)
x₁+x₂+x₃=45
Hence,
Multiply both parts of the equation by denoting by 4:
45+x₄=14(4)
45+x₄=56
45+x₄-45=56-45
x₄=11
