What is the vertex f(x)= 5x^2+20x-16

Answers

Answer 1
Answer: f(x) = 5x² + 20x - 16

y = 5(x² + 4x) - 16
y + 16 = 5(x² + 4x + __)

perfect square:
x² ⇒ x * x
4x ⇒ 2*2x
2² = 4

y + 16 + 4 = 5(x² + 4x + 4)
y + 20  = 5(x+2)²

(x+2)² ⇒ (x+2)(x+2) = x(x+2) + 2(x+2) = x² + 2x + 2x + 4 = x² + 4x + 4

y = 5(x+2)² - 20

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Write 7340 in standard form
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Slope of 1/2 and x-intercept of 4
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Nadia bought 5 tickets to attend a spaghetti super fundraiser at her. school.The equation 5x equals 32.50 can be used to find x, the cost of each ticket in dollars.Which equation represents the cost of each ticket. A: x equals 32.50/5B: x equals 32.50(5)C: x equals 32.50 - 5D: x equals 32.50 + 5

What is the value for x?



Enter your answer in the box.

x = ?

Answers

The two little lines through the sides of AB and CB mean that they are the same length.

Because the two sides are the same length angle A and Angle C are also the same, so those are both 73 degrees.


The three inside angles of a triangle need to equal 180 degrees, so we know angle B would equal 180 - 73 - 73 = 34 degrees.


Now we can set the equation for angle B equal to 34 and solve for x.


6x+4 = 34

Subtract 4 from each side:

6x = 30

Divide both sides by 6:

x = 30/6

x = 5

Round each number to the nearest whole number.225.45 and 90.32

Answers

225.45 is 230 

90.32 is 90
225.45 rounded to the nearest tenth is 230and 90.32 to the nearest tenth is 90

What is the total cost of a $12.60 item plus 7% sales tax?

Answers

To take a percent, move the decimal point of the percent two places to the left. 7% = 0.07

Then multiply:

12.60 • 0.07 = 0.88

12.60 + 0.88 = 13.48

The total cost is: $13.48
7% = 0.07
12.60 * 0.07 = 0.88
12.60+0.88 =13.48
$13.48
I hope this helps;)

What are the quadrants for -6,-4

Answers

the quadrant for -6,-4 is quadrant 3
Quaderant 3, negative and negative

A company’s stock decreased from $15 per share to $9 per share. What is the percentage decreased in stock price? Round your answer to the nearest whole percent. Do not include the percent sign in your answer.

Answers

Answer:

40

Step-by-step explanation:

Let's use the Rule of Three Simple to answer the question this way:

Stock price    Percentage

$ 15                    100%

$ 9                       x

15 * x = 9 * 100

15x = 900

x = 900/15

x = 60

Percentage decreased = 100 - 60

Percentage decreased = 40

The company's stock decreased 40 percent

Final answer:

The decrease in the stock price from $15 to $9 represents a 40% decrease. We arrived at this result by subtracting the lower price from the higher one, dividing the result by the original price and then multiplying by 100.

Explanation:

The question asks about how much the stock price of a company decreased from $15 per share to $9 per share. In this case, the first step is to determine the difference in the stock prices, which is $15 - $9 = $6. To find the percentage decrease, we divide this difference by the original price and multiply by 100:

($6 / $15) * 100 = 40

Therefore, the stock price decreased by 40%. It's important to understand that stock prices can fluctuate based on a variety of factors, as seen in stock market histories such as the case of Netflix, whose stock price has experienced significant changes over the years. Nevertheless, the principle of calculating the percentage decrease remains the same.

Learn more about Percentage Decrease here:

brainly.com/question/29763752

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List 3 values that would make this inequality true.

Answers

10, 20, and 30. Hope this helped :0
I think 5, 10, and 15 might work, but 10, 20, and 30 do for sure.