Answer:
z ≤ 7
Step-by-step explanation:
9x - 7 ≤ 28 + 4x
9x - 4x ≤ 28 + 7
5x ≤ 35
x ≤ 35 / 5
x ≤ 7
The ratios of y over x are all equal to 1/3, thus we may infer that: B. the table is proportionate.
What is a Proportional Relationship?
Any pair of values in a table that depicts a proportionate relationship have the same value for the proportionality constant, k, where k = y/x.
Check each pair of values in the table to see if k is the same:
(36.75, 12.25):
k = 12.25/36.75 = 0.33
(16.8, 5.6):
k = 5.6/16.8 = 0.33
(77.1, 25.7):
k = 25.7/77.1 = 0.33
It is proportionate because the ratios of y across x are all equal to 1/3, which implies that the value of k is identical for all values.
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Answer:
b = 7
Step-by-step explanation:
Given
8 - (3 + b) = b - 9 ← distribute parenthesis on the left by - 1
8 - 3 - b = b - 9, that is
5 - b = b - 9 ( subtract b from both sides )
5 - 2b = - 9 ( subtract 5 from both sides )
- 2b = - 14 ( divide both sides by - 2 )
b = 7
3 and 4/5 would be the fraction form of 3.8
