Answer:
The correct option is third one 51°.
Therefore,

Step-by-step explanation:
Given:
In Triangle XYZ
XY = z = 16
YZ = x = 19
ZX = y = 18
To Find
angle Z = ?
Solution:
In Triangle XYZ, Cosine Rule says

Substituting the values we get



Therefore,

Answer: 31
Step-by-step explanation:
Given: The function t(x) = 3x + 5 determines how many cans of corn kernels a food truck needs to stock, where x is the number of shifts the crew is going to work in the truck.
At x=3

The crew uses c(t(x)) to find the amount of money to spend on corn. The function c(x) = 2x + 3
When the crew is going to work 3 shifts,the amount of money must be spent
=
The amount of money must be spent when the crew is going to work 3 shifts=31
Answer:
The percent of error in her measurement is 1.3%
Step-by-step explanation:
we know that
The circumference of a circle is equal to

where
D is the diameter
we have

assume

substitute
----> This value represent the 100% (theoretical value)
Find the difference between the theoretical value and the measured value
Find the percentage by proportion
