In this this exercise, you're required to determined how many pounds of copper can be found in 120 pounds of the brass. Thus, we would solve for the percentage of copper contained in this type of brass.

$Copper = \frac{65}{100} \times 120\\\\Copper = 0.65 \times 120$

Copper, C = 78 pounds

5 0

1 year ago

Y=4x+5 has a gradient of 4 what is the equation of aline parallel to it?

Aloiza [94]

Your answer is Y= 4x + 2

8 0

2 years ago

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How do I determine if a limit exist considering how it looks on a graph? Can I determine if a limit exists solely from the graph

Allushta [10]

Answer: See below

Step-by-step explanation:

1. At x=1, the limit does not exist. If you see an open circle on the graph like you do here, you know that the function is discontinuous. This graph actually shows a jump discontinuity at x=1.

2. You can determine if a limit exists by solely looking at the graph. Unfortunately in this case, f(1)=1 and $\lim_{x \to \ 1^-} f(x)$ are not equal to each other. Therefore, the limit does not exist.

7 0

2 years ago