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3 years ago

Question 1 (1 point)

Mathematics

2 answers:

Igoryamba3 years ago

6 0

1:x=4

2:x{5

Step-by-step explanation:

EleoNora [17]3 years ago

3 0

1. X=5

Ahh Ahahah suns

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What is the slope of this graph?

guapka [62]

Answer: 1/5 up 1 over 5

Step-by-step explanation:

6 0

3 years ago

The total cost (in dollars) for a company to manufacture and sell x items per week is C = 40 x + 640 , whereas the revenue broug

ikadub [295]

Answer:

The company must sell 60 or 70 items to obtain a weekly profit of 200.

Step-by-step explanation:

The profit is the difference between the revenue and the cost of a given task, therefore:

$\text{profit} = R - C\\\text{profit} = 66*x - 0.2*x^2 - (40*x + 640)\\\text{profit} = 66*x - 0.2*x^2 - 40*x - 640\\\text{profit} = - 0.2*x^2 + 26*x - 640$

To have a profit of 200, we need to sell:

$-0.2*x^2 + 26*x - 640 = 200\\-0.2*x^2 + 26*x -840 = 0\text{ } *\frac{-1}{0.2}\\x^2 -130 + -4200 = 0\\x_{1,2} = \frac{-(-130) \pm \sqrt{(-130)^2 - 4*1*(-4200)}}{2*1}\\x_{1,2} = \frac{130 \pm \sqrt{16900 + 16800}}{2}\\x_{1,2} = \frac{130 \pm \sqrt{100}}{2}\\x_{1,2} = \frac{130 \pm 10}{2}\\x_{1} = \frac{130 + 10}{2} = \frac{140}{2} = 70\\ x_{2} = \frac{130 - 10}{2} = \frac{120}{2} = 60$

The company must sell 60 or 70 items to obtain a weekly profit of 200.

3 0

3 years ago

3. Write an equation of a line that is perpendicular to the line x – 2y = 8.

xenn [34]

Answer:

y=0.5x+40

Step-by-step explanation:

Copy the equation.

x-2y=8

Subtract x from both sides.

-2y=-x-8

Divide both sides by -2.

y=0.5x+4

Now we know the slope is 0.5.

Any line with a slope of 0.5 will be perpendiculr to the original line.

One that you can use is y=0.5x+40.

7 0

3 years ago

Hello everyone!

Ivan

After 1 year it is worth 108% of its original value
108% = 1.08
so 1.08 x 1000 = $1080

After 2nd year it is worth 92% of that $1080
92% = 0.92
so 0.92 x 1080 = $993.60

3 0

3 years ago

Rewrite this expression using a positive exponent.<br> -7<br> 5

Sergio [31]

Answer:

1/5^7

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers