100 = 2t + 4f
40= t + f
-----------
get t or f by itself first.
f = 40 - t : Then substitute it back into for f in the other equation
100 = 2t + 4f
100= 2t +4(40-t)
100= 2t + 160 - 4t
100 = -2t + 160
-160 -160
<u>-60 </u>= <u>-2t
</u>-2 -2
t = 30 (Then plug this into either equation to solve for f)
Therefore,
t = 30 questions
f = 10 questions
Answer:
$48
Step-by-step explanation:
Ashton is saving money for a new bike. He needs 120$ But only has saved 60% so far. How much more money does he need to buy the scooter
Ashton needs money for new bike=120$
savings of ashton is 60 % of his bike cost
hence 60% of 120 dollar will be
His saving=(60/100)*120=7200/100=72$
remaining cost will be obtained by subtracting saved money from total cost
total cost=120 dollar
saved money=72dollar
hence
Remaining more money he needed is =120-72=48$
Answer:
5040
Step-by-step explanation:
I assume you really mean 7!
you understand what "!" means ?
n! = n×(n-1)×(n-2)×(n-3)×...×3×2×1
so,
7! = 7×6×5×4×3×2×1
now all you need is a calculator.
7! = 5040
Answer:
yes
Step-by-step explanation:
