How many grams are there in 2.5 kilograms
1 answer:
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Answer:
The number of paper clips that Crystal has is 3 and the number of paper clips that Gayle has is 14
Step-by-step explanation:
Let
x----> the number of paper clips that Crystal has
y ---> the number of paper clips that Gayle has
we know that
----> equation A
----> equation B
substitute equation A in equation B
Solve the quadratic equation by graphing
The solution is
see the attached figure
Find the value of y
therefore
The number of paper clips that Crystal has is 3
The number of paper clips that Gayle has is 14
Answer:
B
Step-by-step explanation:
We can see in the expression that there are 2 x² blocks, 4 -x blocks, and 3 -1 blocks. Therefore, we can write this as
2 * x² + 4 * (-x) + 3 * (-1) = 2x²-4x-3
Comparing this with each answer, we have
A: x²-2x-4 + x² + 2x-1 = 2x²-5. This is not correct
B: 3x²-7x+1-(x²-3x+4) = 3x²-7x+1 -x²+3x-4 = 2x²-4x-3. This seems correct but we can check the other answers to be sure
C: (2x+1)(x-3) = 2x²-6x+x-3 = 2x²-5x-3. This is incorrect
D: . This is incorrect