The total cost when 881 minutes is used is $477.50.
<h3>What are the equation that model the question?</h3>
a + 480b = 277 equation 1
a + 990b = 532 equation 2
Where:
- a = flat fee
- b = variable fee
<h3>What is the flat fee and the variable fee?</h3>
Subtract equation 1 from equation 2
510b = 255
b = 255 / 510
b = $0.50
In order to determine the flat fee, substitute for b in equation 1
a + 480(0.5) = 277
a + 240 = 277
a = 277 - 240
a = $37
<h3>What is the total cost when 881 minutes is used?</h3>
Total cost = flat fee + (variable cost x number of minutes spoken)
$37 + (881 x 0.5) = $477.50
To learn more about simultaneous equations, please check: brainly.com/question/25875552
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Answer:
Let 
Solution: 
Step-by-step explanation:
See attached for step-by-step
Answer:
Carla used human accuracy to create perpendicular lines.
-She will grab a pencil and a bond paper
-She will grab the straighthead and the compass.
-She will test with the compass if the straighthead is orientated correctly.
-She will now make a line with the correctly orientated straighthead and pencil.
-She has finished
Daryl, used technological ease to create perpendicular lines.
-He opens his PC
-He opens Microsoft Word™
-He will insert two lines, one orientated 0° ↑, and one orientated 90° →
-He now connects the two lines.
-He will print the file
-He has finished.
Step-by-step explanation:
This is an acute scalene triangle
The triangle is acute since all three angles (58, 57, 65) are less than 90 degrees
The triangle is scalene as the angles are all different. So this leads to the sides being different lengths. No two sides are the same length.
Answer:
-3
Step-by-step explanation:
5*3=15
15-18= -3
