Answer:
Yes
Step-by-step explanation:
y is the litters of water in the tank
x is the time in minutes
m is the change in litters
b is the initial amount of water
so the formula is y = mx + b
whereas m is -14 and b is 770
y = -14x + 770 or y = 770 - 14x
To solve for X you must get x by itself so let's get started
-4x+13=6x-7
subtract 13 from both sides
-4x=6x-20
subtract 6x from both sides
-10x=-20
divide both sides by -10
x=2
to check if this is correct plug in x into original equation
-4 (2)+13=6 (2)-7
-8+13=12-7
5=5
answer x=2 holds true :)
Answer:
16 problems.
Step-by-step explanation:
100% divided by 20 questions.
100/20 is equal to 5, therefore each question is worth 5 points.
Grade of 80% divided by points per question.
80/5 is 16 so the student answered 16 questions correctly.
Answer:
1, 2 and 4
Step-by-step explanation:
1.32m2/16m +48m/16m =2m +3
2.4m2/2m +6m/2m =2m+3
4.10m2 /5m +15m/5m= 2m+3
