Answer:
see explanation
Step-by-step explanation:
(a) Add the parts of the ratio, 1 + 3 = 4 parts
Divide 260 by 4 to find the value of one part of the ratio.
260 ÷ 4 = 65 ← value of 1 part of the ratio, thus
3 parts = 3 × 65 = 195
260 in the ratio 1 : 3 = 65 : 195
(b)
Given
3 : 5 ← divide both parts of the ratio by 3
: 
= 1 : → A
Answer:
An invoice was paid an average of 20 days after it was received.
Mean =
Standard deviation =
Now we are supposed to find what percent of the invoices were paid within 15 days of receipt i.e.P(x<15)
Formula :
At x = 15
Substitute the values
Refer the z table for p value
So, p value = 0.1587
So, 15.87% of the invoices were paid within 15 days of receipt
Step-by-step explanation:
we are given
standard form:
We will complete x , y and z square
make all x , y and z terms together
surface:
It is an infinite paraboloid
graph:
Answer:
term 25
Step-by-step explanation:
a is the number added from 3 to 8 is 5(must be constant like 8 to 13 is also 5
b is the zero term so 3-a which is 3-5=-2
Answer: 16/35, decimal form: 0.45
Step-by-step explanation: (3/5-1/7) =3/5-1/7=3/5+-1/7=21/35+-(5)/35= 21 +(-5)/35= <em><u>16/35, decimal form: 0.45</u></em>
