Inequality: 21d+25≤115
Jim can rent a car for maximum 4 days, therefore, he is not correct in his calculations.
Step-by-step explanation:
Given,
Per day rent = $21.00
Per mile rent = $0.10
Miles to be driven by Jim = 250
Cost of 250 miles = 250*0.10 = $25
Amount Jim can spend = $115.00
Let,
d represent the number of days.
Per day rent*number of days + cost of 250 miles ≤ Total amount to spend
21d+25≤115
Subtracting 25 from both sides
Dividing both sides by 21
Jim can rent a car for maximum 4 days, therefore, he is not correct in his calculations.
Keywords: inequality, division
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Answer:
x= 1.5, y= 3.5
or x= -5, y= 10
Step-by-step explanation:
Let's solve by substitution.
Label the two equations:
y= 2x² +6x -10 -----(1)
y= -x +5 -----(2)
Substitute (2) into (1):
2x² +6x -10= -x +5
2x² +6x +x -10 -5= 0
Simplify:
2x² +7x -15= 0
Factorise:
(2x -3)(x +5)= 0
2x -3= 0 or x +5= 0
2x= 3 or x= -5
x= 1.5
Now that we have found the value of x, we can find the value of y through substitution.
Substitute into (2):
y= -1.5 +5 or y= -(-5) +5
y= 3.5 or y= 10
Supplementary:
Do check out the following should you wish to learn more about solving quadratic equations!
Answer: 8.50
Step-by-step explanation: I like to turn fractions into deciamls.
5/6 = .83 (I get 0.83 by 5 divided by 6)
2/3 = .66 (I also got 0.66 by 2 divided by 3)
.8333 + .66 = 149 = 1.49333
5 + 2 = 7 + 1.49 = 8.49
Now round up 8.49333 and you'll get 8.50 or 8 ¹/²
Let me know if I'm wrong, have a good day!
Answer:
90
Step-by-step explanation:
add them all up and divide by how many there are
Answer:
9.008 < 9.08
Step-by-step explanation:
9.08 is greater because you compare the number 9 and 9 are the same, 0 and 0 still the same, but then 0 and 8 you know eight is greater. was this helpful enough
