Sarah bought 3 first class tickets and 7 coach tickets.
Step-by-step explanation:
Given,
Number of people = 10
Total amount spent on tickets = $4830
Cost of each coach ticket = $270
Cost of each first class ticket = $980
Let,
x be the number of coach tickets
y be the number of first class tickets
According to given statement;
x+y=10 Eqn 1
270x+980y=4830 Eqn 2
Multiplying Eqn 1 by 270

Subtracting Eqn 3 from Eqn 2

Dividing both sides by 710

Putting y=3 in Eqn 1

Sarah bought 3 first class tickets and 7 coach tickets.
Keywords: linear equation, elimination method
Learn more about elimination method at:
#LearnwithBrainly
3x^2(x^2-10x+25) hope this helps
Answer:
s = 22w
Step-by-step explanation:
We need to try this equation for all of the numbers in the table.
s = 22w
22 = 22 * 1
s = 22w
44 = 22 * 2
s = 22w
66 = 22 * 3
s = 22w
88 = 22 * 4
s = 22w
110 = 22 * 5
Answer: 96°
Step-by-step explanation:
the sum of the total angles in a triangle is 180
31+53= 84
180-84= 96