Answer: option A is the correct answer.
Step-by-step explanation:
The expression that relates revenue, profit and cost is
Profit = Revenue - Cost
The revenue from selling x shirts is r(x) = 11x. The cost of buying x shirts is c(x) = 6x + 20. Therefore,
p(x) = r(x) - c(x)
p(x) = 11x - (6x + 20)
By expanding the bracket, the minus sign will alter each term in the bracket. Therefore,
p(x) = 11x - 6x - 20
p(x) = 5x - 20
Answer:234972356463269+32+33126362563
Step-by-step explanation:720
24
+
740
32
760
40
D
+
780
48
800
56
=
252654646359
Answer:
4 miles per hour
Step-by-step explanation:
So we have bike speed, b, and run speed, r. We also have an amount of time t where running that amount of time gets 6 miles, while biking that same time gets 19.5. Let's write these out as equations.
rt = 6
bt = 19.5
We are also told that b is 9 more than r so writing that out is b = 9 + r. So it's basically a system of equations.
rt = 6
bt = 19.5
b = 9 + r
Since we have b = 9 + r let's replace b with that in bt = 19.5
rt = 6
(9 + r)t = 19.5
b = 9 + r
With rt = 6 we can get that r = 6/t, so we can plug hat into (9 + r)t = 19.5
rt = 6
(9 + 6/t)t = 19.5
b = 9 + r
Expanding (9 + 6/t)t = 19.5 will get us an equation to solve for t
rt = 6
9t + 6 = 19.5
b = 9 + r
So let's solve for t in 9t + 6 = 19.5
rt = 6
t = (19.5 - 6)/9 = 1.5
b = 9 + r
Now we can plug this new value for t into rt = 6 to find r. I'm just gonna write that part since this will get us the answer.
rt = 6
r*1.5 = 6
r = 4
So she runs at 4 miles per hour
Answer:
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Step-by-step explanation:
Move constant to right hand side and change it's sign
⇒
Calculate
⇒
Change the signs of both sides of the equation
⇒
Hope I helped!
Best regards!!
Answer:
7 goes into 54 7 times.
Step-by-step explanation:
It is seven times because 7x7=49 and 7x8=56. So there is no real number that is the exact amount of times 7 goes into 54.
HOPE THIS HELPS!!!
