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natta225 [31]
3 years ago
10

Simplify (6 5x) (7x 3)

Mathematics
1 answer:
antiseptic1488 [7]3 years ago
3 0
(6 + 5x)(7x + 3) = 42x + 18 + 35x^2 + 15x = 35x^2 + 57x + 18
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A jeweler wants to minimize business costs and has found that the average cost in dollars per necklace is given by C(x)=0.5x^2-7
Vika [28.1K]

Answer:

The maximum cost is 41 dollars per necklace.

Step-by-step explanation:

The average cost in dollars/necklace is given by :

C(x)=0.5x^2-7x+65.5  .....(1)

Where

x is the number of necklaces that are created

To maximize the cost, find the value of x by putting dC/dx = 0

\dfrac{d}{dx}(0.5x^2-7x+65.5)=0\\\\x-7=0\\\\x=7

Now put the value of x = 7 in equation (1).

C(x)=0.5(7)^2-7(7)+65.5\\\\=41\ \text{dollars per necklace}

Hence, the maximum cost is 41 dollars per necklace.

8 0
3 years ago
No Explanation Please Don't Answer
vazorg [7]

Answer:

A) \frac{1}{2}(9+15)w

Step-by-step explanation:

Area of a trapezoid is \frac{1}{2}(base1+base2) *h

A=\frac{1}{2}(9+15)*w

8 0
2 years ago
Does this graph show a function? Explain how you know.
beks73 [17]

Answer:

No, the graph fails the vertical line test

Step-by-step explanation:

To determine if the graph is a function, we can use the vertical line test.

Use a vertical line, if the vertical passes through two or more points, the graph is not a function

Looking at the y axis ( which is a vertical line), it passes through two points

This means the graph is not a function

No, the graph fails the vertical line test

5 0
2 years ago
Suppose E is an event whose probability of occurring is
bixtya [17]

Answer:

D. 1/3

Step-by-step explanation:

3 0
2 years ago
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Ralph is an electrician. He charges an initial fee of $37.50, plus $25 per hour. If Ralph earned $187.50 on a job, how long did
Fynjy0 [20]

Answer:

6

Step-by-step explanation:

25x+37.5=187.5; x as hours

8 0
3 years ago
Read 2 more answers
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