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OleMash [197]
3 years ago
8

Which step has the mistake in solving for roots?

Mathematics
1 answer:
REY [17]3 years ago
7 0

Answer:

Step-by-step explanation:

2x² - 7x - 3 = 1

Step 1: 2x² - 7x - 4 = 0

Step 2: incorrect.

Use Quadratic Formula to solve for roots.

x = [7 ± √(7² – 4·2(-4))] / [2·2]

 = [7 ± √81] / 4

 = [7 ± 9] /4

 = -0.5, 4

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To celebrate getting a new job, Marco went out for a dinner that cost $100. If the local sales tax is 6% and Marco left a 15% ti
lorasvet [3.4K]

9514 1404 393

Answer:

  $121.00

Step-by-step explanation:

Together, the tax and tip were 6% and 15% of $100, or 21% of $100. That means the total cost of Marco's mean was ...

  (1 +21%) × $100 = 1.21×$100 = $121.00

5 0
3 years ago
Polygon B BB is a scaled copy of Polygon A AA using a scale factor of 5 55. How many times larger is the area of Polygon B BB th
stira [4]

Answer:

308025 times larger

Step-by-step explanation:

The polygon BBB is a scaled copy of polygon A using a scale factor of 555.

This means for every length of polygon AAA, polygon BBB is 555 times larger.

Recall area is in L^{2}.

Area of polygon BBB = (scale factor)^2 multiplied by area of polygon AAA

Since the scale factor is 5

Area of polygon BBB = (555^2) * Area of polygon AAA

Area of polygon BBB = 308025 times the area of polygon AAA

Hope I have been able to help.

8 0
3 years ago
Read 2 more answers
I know you add it but can you please help and show work
kondaur [170]
Answer is b i know this
5 0
4 years ago
Explain the difference between a public and Private company. is it better for a company to be public or private
Mumz [18]
In most cases, a private company is owned by the company's founders, management, or a group of private investors. A public company is a company that has sold all or a portion of itself to the public via an initial public offering.
3 0
3 years ago
A computer regularly priced at $843.75 is marked down 40%. What is the sale price of the computer. HELPP!!
yulyashka [42]

Answer: $506.25

Step-by-step explanation:

1. Find 40% of $843.75

- The decimal value of 40% is 0.4. We can multiply 0.4 by 843.75 to find the discount on the computer.

    -> 0.4*843.75= 337.5

2. Now that we have the discount, we can subtract 40% of the original price to find the new price.

843.75 - 337.5 = $506.25

8 0
3 years ago
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