Question

Which is a valid proportion?
Three-fourths = StartFraction 21 over 28 EndFraction
StartFraction 5 over 6 EndFraction = StartFraction 29 over 30 EndFraction
StartFraction 4 over 7 EndFraction = StartFraction 16 over 49 EndFraction
Two-fifths = StartFraction 12 over 15 EndFraction

Answer 1

Isabella worked 50 hours over the past two weeks, and she gets paid by the hour. During the first week of the two-week span, she worked 30 hours and got paid $285.00. How much did she get paid during the second week of the two-week span?
$114.00
$190.00
$427.50
$475.50

Answer 2

old question but will respond so this can be closed

starting w/ the first one

3/4 = 12/28
5/6 = 29/30
4/7 = 16/49
2/5 = 12/15

for each answer choice, simply test whether the left and right sides are equal. fast way would be to just divide numerator/denominator and see if both sides are still the same decimal

Answer 3

sescond one:

Isabella worked 50 hours over the past two weeks, and she gets paid by the hour. During the first week of the two-week span, she worked 30 hours and got paid $285.00. How much did she get paid during the second week of the two-week span?
$114.00
$190.00
$427.50
$475.50

the total amount worked is 50 hours. she worked 30 hours the first week. so she must have worked 50 - 30 = 20 hours the second week

since the hourly rate is the same for both weeks

(pay during second week)/(# of hours worked second week) = (pay during first week)/(# of hours worked first week)

solve for second week's pay