Answer:
4 hours aka D
Step-by-step explanation:
You divide 3 1/2 over 7/8. You can use the graph and count by 7 on the little boxes until you reach the end of the gray.
Question 1:
I'm actually not sure which term you ment exactly, so I calculated the solution for three possible variations of your term, depending on how one sets the brackets.
To calculate an ordered pay just set x or y to some value, insert it into the equation and you get the solution for the other variable.
In these calculations I always picked x so values would get eliminated or as close to 0 as possible to make it easier.
variation 1 of term:
y=(5^4)*(x-3)
insert x=3
y=(5^4)*(3-3)==(5^4)*0=0
pair: (3,0)
variation 2 of term:
y=(5^4)*x-3
insert x=0:
y=(5^4)*0-3=0-3=-3
pair: (0,-3)
variation 3 of term:
y=5^(4*x-3)
insert x=1:
y=5^(4*1-3)=5^1=5
pair: (1,5)
question 2:
2y=-5x-4
just insert the pairs as (x,y) into the equation:
a. (-2,3)
2*3=-5*-2-4
6=10-4 yes
b. (1,-4)
2*-4=-5*1-4
-8=-9 no
c. (0,2)
2*2=-5*0-4
4=-4 no
d. (-1,1)
2*1=-5*-1-4
2=5-4 no
Answer:
55p
Step-by-step explanation:
30+25=55 its ....simple addition
I got all Rational Numbers are Integers (A.)
Hope this helps! :D
7x-5y=21 when x=4 from the coordinate point of (4,y)
Next,
7x-5y=21
Substitute x with 4
7(4)-5y=21
28-5y=21
Add 5 to each side
28-5y+5y=21+5y
28=21+5y
Subtract 21 to each side
28-21=21+5y-21
7=5y
Divided 5 to each side
7/5=5y/5
y=7/5
Or
y=1 2/5
Check:
7x-5y=21
Substitute x with 4 and y with 7/5
7(4)-5(7/5)=21
28-7=21
21=21. As a result, (4,7/5) is your correct answer. Hope it help!