Answer:
Step-by-step explanation:
153.52
Answer: 7/8= 35/40
3/10= 12/40
Step-by-step explanation: You can find the least common denominator by looking at a multiplication table or by multiplying the prime factors of the original denominators:
8 = 2×2×2. 10=2×5
"Cancel" the duplicate from one set or the other. So here one of the 2's is eliminated:
2×2×2×5=40
Then set up a proportion:
7/8 = x/40 Multiply the new denominator by the original numerator, then divide by the original denominator:
40×7=280. 280÷8=35
40×3=120. 120÷10=12
I hope this helps you with this question and all the others like it!
Step-by-step explanation:
s.i= P×T×R/100
=2000×0.25×2/100
= 1000/100
= 10
Answer:
432 people on Friday and 658 on Saturday
Step-by-step explanation:
Lets use variables for each day
x=Friday and y=Saturday
now write two equations since you were given two different information (money and people)
$6 on Friday and $8 on Saturday with a total amount of $7856
the equation will be 6x+8y=7856
now the second equation will be for people
x amount of people on Friday and y amount of people on saturday for a total of 1090; the equation will be
x+y=1090
put them together
6x+8y=7856
x+y=1090
now you can cancel a variable but manipulating one of the equations. We'll use x, to cancel x you need make it zero so multiply the bottom by -6
6x+8y=7856
-6(x+y=1090)
6x+8y=7856 now subtract downwards, with the x cancelling
-6x-6y=-6540
2y=1316 simplify
(2y/2)=(1316/2)
y=658
insert y into x+y=1090
x+(658)=1090
-658 -658
x=432
2
Step-by-step explanation:
1/4(-4×3 + 10×2)
1/4(-12 + 20)
THERE ARE 2 WAYS YOU COULD SOLVE THIS!
1. 1/4( -12) + 1/4( 20) = -3 + 5 = 2
2. 1/4 ( -12+20) = 1/4(8) = 2
