Answer: I think it is B
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
12x + 6y = 24
Subtract 6y on both sides.
12x = 24 - 6y
Divide 12 into both sides.
x = 24/12 - 6/12y
x = 2 - 1/2y
The number of red marbles in the bag is 19 and the number of blue marbles is 8.
<u>Explanation:</u>
Let R be the number of red marbles
Let B be the number of blue marbles
According to the question,
R + B = 27 (Total number of marbles is 27
) -1
R = 3B - 5 (Number of red marbles is 5 less than 3 times the number of blue marbles
)
Substitute the right half of the second equation for R in the first equation
3B - 5 + B = 27
Add 5 to each side and combine the Bs
4B = 32
Divide both sides by 4
B = 8
Use this value of B in the first equation
R + 8 = 27
R = 19
Therefore, number of red marbles in the bag is 19 and the number of blue marbles is 8.
Answer: x=6, y=4
Step-by-step explanation:
substitute y with (x-2) in the 1st equation
10x-9(x-2)=24
10x-9x+18=24
x+18=24
x=6
Then use 6 for x to solve for y
y=6-2
y=4
Answer:
A=21√6
p=6√3 + 14√2
Step-by-step explanation:
Area =L*W
P=2(L+w)