Answer: Mark has 28 marbles while Don has 85 marbles.
Step-by-step explanation:
Let x represent the number of marbles that Mark has.
Let y represent the number of marbles that Don has.
If Don has 1 more than 3 times the number of marbles Mark has, it means that
y = 3x + 1
The total number of marbles is 113. It means that
x + y = 113- - - - - - - - - - - - 1
Substituting y = 3x + 1 into equation 1, it becomes
x + 3x + 1 = 113
4x + 1 = 113
4x = 113 - 1 = 112
x = 112/4
x = 28
y = 3x + 1 = 3 × 28 + 1
y = 85
Answer:
98.1 units
Step-by-step explanation:
so the area of the rectangle is 6x8 = 48
the are of one of the triangles is 4.5x8 = 18
so two of those...
then the area of the circle 6xpi = 28.2 but we have to cut it in half since its a perfect semi-circle... so 28.2/2 = 14.1
then we just add them all up, and we get
48+18+18+14.1 = 98.1
I hope this helps :)
Answer:
It’s the first and the third one
Step-by-step explanation:
i am kinda confused can you explain it more please
