Answer:
231z = 256
Step-by-step explanation:
231z = 256. That's all you have to do. If you wish, divide both sides by 231 to find the value of z.
Answer:
1/8
Step-by-step explanation:
A dentist has 400 male and female patients that range in age is from 10 years old to 50 years old and up. What is the experimental probability that the next patient will be female and in the age range of 22 through 39?
10-21 22-39 40-50 50+
Male 44 66 32 53
Female 36 50 45 74
There are 400 male and female patient in total
there 400 possible outcome
Total number of possible outcome = 400
There are 50 females in 22-39 range and thus there are 50 favourable outcome
The probability is the number of favourable outcome divided by the number of possible outcome

= 0.125
=12.5%
Answer:
<h2> 25 centimeters</h2>
Step-by-step explanation:
Ratio 4:5 means:
width: W = 4x
length: L = 5x
Area of rectangle: A = W×L
Therefore:
500 = 4x×5x
500 = 20x²
50 = 2x²
x² = 25
x = 5
W = 4×5 = 20 cm
L = 5×5 = 25 cm
Let's rewrite the equation as

This should be enough to convince you that the equation has no solutions, no matter which value for k you choose. In fact, the left hand side of the equation is an absolute value, which by definition is always positive, or zero in the worst case.
The equality asks for this quantity to equal -3, a negative number.
A non-negative quantity can never equal a stricktly negative quantity, so the equation has no solutions.
Answer:
After 7 years: $81,500
If x=salary and t=years with company, then x=6400+2500t
Step-by-step explanation: