Answer:
Step-by-step explanation:
To solve systems of algebraic equations containing two variables, start by moving the variables to different sides of the equation. Then, divide both sides of the equation by one of the variables to solve for that variable. Next, take that number and plug it into the formula to solve for the other variable.
For the given numbers, the lowest bound : 41.66. the upper bound: 42.19
<h3>How are upper and lower boundaries discovered?</h3>
To determine a rounded number's upper and lower bounds: Determine the place value of the claimed level of accuracy. By two, multiply this place value. Find the upper bound by adding this amount to the provided value, and the lower bound by deducting this amount from the given value.
The lower: a=49.35. b=7.69
so the lower bounds is:
a-b=49,35-7.69 =41.66 = a=49.49.34.
b=755 the upper = a= So the upper bounds is = a-b= 42.79.
To learn more about upper and lower bound from given link
brainly.com/question/19089853
#SPJ9
I think the answer is mixed number
-1 1/3 over -1/3
============
Answer:
20 + (15h)
Step-by-step explanation: It would be 15 times the amount of hours and then 20 added to that.
