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2 years ago

Please please help me with this question please now and show your steps

Mathematics

1 answer:

sattari [20]2 years ago

6 0

Answer:

$y = {x}^{2} - 8x + 7 \\ a = 1 \: and \: b = - 8 \\ the \: line \: of \: symmetry \: \\ x = \frac{ - b}{2a} = \frac{8}{2} \\ x = 4(line \: of \: symmetry) \\ y = {4}^{2} - 8(4) + 7 \\ = 16 + 32 + 7 = y = 55 \\ vertix \: is \: (4 ,55) \\ y = {0}^{2} - 8(0) + 7 \\ y = 7 \\ 0 = {x}^{2} - 8x + 7 \\ (x - 7)(x - 1) = 0$

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PLEASE ANSWER what does ok mean?

tia_tia [17]

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3 years ago

An online shopping club has 10,000 members when it charges $7 per month for membership. For each $1 monthly

Sonja [21]

Answer:

The function that can be used in the online shopping club about its monthly revenue is:

$R = -400x^{2} +7200x+70000$

Step-by-step explanation:

First, we're gonna take into account the different values we have in the exercise:

10,000 members
$7 per month for membership
Loses of 400 members by each $1 monthly increase

How the variable $x$ represents the price increase, we can do the formula below:

$(10000 - 400x) * (7+x)$

In this formula, we represent in the first part that by each 1 in the variable $x$ , the total of members will be reduced in 400, in the second part, we mention that at the same time, the membership fee will be increased in the same value of $x$ . Now we must simplify this function:

$(10000 - 400x) * (7+x)$

We operate the values:

$70000+10000x-2800x-400x^{2}$

Solve we can:

$70000+7200x-400x^{2}$

And organize:

$-400x^{2} +7200x+70000$

At the end, how $R$ represents the monthly revenue received by the club, we use that variable for our formula:

$R=-400x^{2} +7200x+70000$

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2 years ago

PLEASE EASY HELP*****

frez [133]

Answer:

Step-by-step explanation:

Multiply through by x+5

2(x + 1) = x + 5 - 1 Combine like terms

2x + 2 = x + 4 Subtract 2 from both sides.

2x = x + 4 - 2

2x = x + 2 Subtract x from both sides.

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3 years ago

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Answer:

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Step-by-step explanation:

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2 years ago

What point is not included in the solution set for the inequality (0,6) (1,5) (2,4) (3,2)

Setler79 [48]

Answer:

(3, 2)

Step-by-step explanation:

To be considered part of a solution set for the inequality provided, a given point must lie within the shaded region that is graphed. Since we want to find the point that is not included in the solution set for the inequality, we need to find the point that does not lie in the shaded region.

Let's test each point to see which doesn't lie in the region. Refer to the image below if you're having trouble graphing the points:

(0, 6): This point lies in the shaded region, so it is not our answer.
(1, 5): This point lies in the shaded region, so it is not our answer.
(2, 4): This point lies in the shaded region, so it is not our answer.
(3, 2): This point does not lie in the shaded region, so it is our answer.

Hope this helps!

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1 year ago