Answer: x = 10
Explanation:
Proof that triangle CAB ~ EAD
Angle CAB = Angle EAD (same angle)
Angle ABC = Angle ADE = 90 degree
Thus, Triangle ABC ~ EAD (AA)
And CB/ED = 8/16 = 1/2
Which mean CB = (1/2)ED
That mean AB/AD also equal 1/2
Where AB = 1/2(AD)
We get:
x = 1/2(10 + x)
x = 5 + (1/2)x
x - (1/2)x = 5
(1/2)x = 5
x = 10
Answer:
70 mph
Step-by-step explanation:
(140 miles) / (2 hours) = 70 mph
I am doing with Question Number 2
Let the two numbers be 'x' and 'y'.
According to the question, the product of two numbers is 14.
So, xy=14 (Equation 1)
Now, one of the numbers is 3 ½ times the other.
So,
(Equation 2)
Substituting the value of 'x' from equation 2 in equation 1, we get
So, y= 2 and -2
So, and
x=7 and -7
Numbers are 2,7 and -2,-7.
Sum of numbers 2 and 7 = 9
Sum of numbers -2 and -7 = -9.
Answer:
The answer is true.
Step-by-step explanation:
Sample methods that embody random sampling are often termed probability sampling methods.
Yes this is a true statement.
Random sampling means picking up the samples randomly from a whole population with each sample having an equal chance of getting selected.
For example- selecting randomly 10 students from each class of a school, to survey for the food quality in school's cafeteria.
And this is a type of probability sampling methods. Other types are stratified sampling, cluster sampling etc.