1) Let L = the larger # and S = the smaller #.
A large # is 5 more than twice a smaller #.....This gives Eq 1) L = 5 + 2S
Their sum is 80...This gives Eq 2) L + S = 80.
Substitute Eq 1) into Eq 2), you get
L + S = 80
5 + 2S + S = 80
3S = 75
S = 75 / 3 = 25
L = 5 + 2S
= 5 + 2(25)
= 5 + 50
= 55
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2) [-7,2)
- Vocabulary
· Interval
A set of values between two endpoints.
· Inequality
A mathematical expression which shows that two quantites are not equal.
Answer:
Step-by-step explanation:
The contribution made by each sale is
.. $135 -75 = $60
To make $3300, the store must sell
.. $3300/($60/bicycle) = 55 bicycles
The store must sell 55 bicycles each month to break even.
Josh had zero melons because he never got any .
Answer:
y = -5x + 21
Step-by-step explanation:
The perpendicular slope is opposite of the inverse. The inverse of 1/5 is 5/1, and the opposite of that is -5/1.
So m = -5.
Then use point-slope form:
y + 4 = -5 (x - 5)
If you wish, convert to slope-intercept form:
y + 4 = -5x + 25
y = -5x + 21