(21,22) I solved by substitution
Answer:
Step-by-step explanation:
Put the number in order
4, 5, 6, 10, 12, 19, 22, 23, 30, 36, 39
They are two middle number so you have to add 19 + 22 divide by 2 which is 20.5
The median is 20.5
Answer: 22 small snow cones and 34 large snow cones were sold.
Step-by-step explanation:
Let x represent the number of small snow cones that were sold.
Let y represent the number of large snow cones that were sold.
Selena's snow cone stand sells small snow cones for $2 and large snow cones for $3.50. One summer day, she sold $163 worth of snow cones. This means that
2x + 3.5y = 163 - - - - - - - - - - 1
If the number of large snow cones sold was 12 more than the number of smalls snow cones, it means that
y = x + 12
Substituting y = x + 12 into equation 1, it becomes
2x + 3.5(x + 12) = 163
2x + 3.5x + 42 = 163
5.5x = 163 - 42
5.5x = 121
x = 121/.5 = 22
y = x + 12 = 22 + 12
y = 34
Answer:
19
Step-by-step explanation:
5x² – 3x + 5
Substitute 2 in for x
5(2)² - 3(2) + 5
Solve exponents first
5(4) - 3(2) + 5
Solve/multiply parenthesis
20 - 6 + 5
Add and subtract
19
Hope this helps :)