Answer:
25
Step-by-step explanation:
We need to set up a system of equations, then solve for the number of board markers.
Let r represent red pens, let b represent board markers.
She has 41 items, so our first equation is r+b=41.
The total cost is $46.30, so our second equation is .55r+1.5b=46.3.
r+b=41
.55r+1.5b=46.3
Let's use substitution.
r+b=41
r=41-b
.55r+1.5b=46.3
.55(41-b)+1.5b=46.3
22.55-.55b+1.5b=46.3
22.55+.95b=46.3
.95b=23.75
b=25
He bought 25 board markers.
Answer:
231.12
Step-by-step explanation:
540+7% tax is 577.80
The second one is the answer: f(4) = 22
This is a 30-60-90 special triangle. in a 30-60-90 right triangle, the shortest leg is half of the hypotenuse, and the other leg is (√3)/2 of the hypotenuse,
so FA=(1/2)AD=7, DF=(√3)/2)*14=7√3
the area is (1/2)*7*7√3≈42.4
Answer: 0.10(n)=25+0.05(n-200)
Explanation:
The number of business cards are n
Plan A: No initial fee and $0.10 for each business card
Plan B: $25 for the first 200 business cards
and surplus of $0.05 for each additional card
As n is total business cards
so from plan A equation is
0.10(n)
from plan B
25 + 0.05(n-200) if n > 200
Now as a whole the equation for no of business cards would be
0.10(n)=25+0.05(n-200)
