So pretend weekend calls is x and weekday calls are y.
the formulas is x + y = 610
0.07x + 0.08y = 48.05
So, x = 610 - y
Then, substitute x into the second equation.
0.07(610 - y) + 0.08y = 48.05
42.7 - 0.07y + 0.08y = 48.05
0.01y = 5.35
y = 535
Then substitute y into the first equation.
x + 535 = 610
x = 75
Just to be sure, substitute x and y into the second equation.
0.07(75) + 0.08(535) = 48.05
5.25 + 42.80 = 48.05
48.05 = 48.05
So, on weekends, he used 75 minutes.
On weekdays, he used 535 minutes.
Hey there! Welcome to Brainly!
Let's see how many marbles we have in total.
12+11+17+5=45
We want to find the probability of selecting a marble that is not blue. Let's see how many marbles aren't blue.
12+11+5=28
We have this probability out of 48.
28/48
We simplify, giving us 7/12 or about 58.33%.
I hope this helps!
The system of equations would be x + y = 28 and 3x + 5y = 100.
<h3>What is a system of equations?</h3>
A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.
Given;
A test is worth 100 points. Multiple-choice questions are worth 3 points and short-answer questions are worth 5 points.
If the test has 28 questions
Let x be multiple-choice questions
Let y be short-answer questions
The system of equations would be
x + y = 28
3x + 5y = 100
Learn more about equations here;
brainly.com/question/10413253
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Step-by-step explanation:
I think the 2nd one is the correct
The arcs must intersect(cross) in order to connect to the vertex of the angle.
What is an arc?
- The bow of a circle or arc is defined as the part or member of the circumference of a circle.
- A straight line that could be drawn by connecting the two ends of the bow or arc is known as a passion of a circle. However, it's known as a semicircular arc, If the length of a arc is exactly half of the circle.
- You can describe the bend of a rainbow as an arc. In calculation, an arc is one section of a circle, but in life, you can use the word to mean any twisted shape, like the bow of a ballerina's arm or the graceful arc of a flowering vine over a kiosk.
The arcs must intersect(cross) in order to connect to the vertex of the angle.
Learn more about arc here:
brainly.com/question/28108430
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