The individual should work 28 hours to earn $630 at a rate of $22.50 per hour.
Direct variation formula is y = kx;
Where y directly varies on the changes of x with the constant ratio of k.
We need to first get the k or constant rate.
y = kx
900 = k (40)
k = 900 / 40
k = 22.50 this is the rate per hour
To check:
900 = 22.50 * 40
900 = 900
y = 22.50x
630 = 22.50x
x = 630 / 22.50
x = 28 hours.
To check:
630 = 22.50 * 28
630 = 630
Option A.
Step-by-step explanation:
Rational numbers -
- Numbers that can be written as fraction of two whole numbers.
- They can be positive, negative or zero.
- They are numbers that can be written as fractions.
- So, options B and C are examples of rational numbers.
Vinculum or Bar numbers -
- These numbers are repeating decimals.
- They are written with a line or a bar on top of the repeating numbers.
- Bar numbers are irrational numbers.
- So, option A is not a rational number.
563 X 410 = 230830, you're welcome
Answer:
34°
Step-by-step explanation:
To figure out the angle of the said letter, we divide the outer angle by 2 to get the answer. Since the outer angle is 68°, half of that is 34°. I hope this helps. Please mark me the brainliest because I really need it. Thanks!
Answer:
"The percentage change of a ratio of two variables is approximately the percentage change in the numerator <u>minus</u> the percentage change in the denominator."
Step-by-step explanation:
The percent change in a number is determined by dividing the difference between the new number and original number by the original number and multiplying the result by 100.
Suppose the original ratio of two numbers is: 
.
And the new ratio is: 
The percent change is:
Thus, the complete statement is:
"The percentage change of a ratio of two variables is approximately the percentage change in the numerator <u>minus</u> the percentage change in the denominator."
