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3 years ago

11

Use the discriminant to determine the number of solutions and types of solutions for the quadratic equation, below. Show your wo

rk when calculating the discriminant for full credit. Then answer all four questions in the box. (6 points)
a^2-5a=6

1 answer:

maria [59]3 years ago

7 0

Answer:

6

Step-by-step explanation:

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3 over 5 is 30% of what number?

denis23 [38]

3/5 = 0.3 * x
3/5 is 30% of x - This is how they match up from the word problem to a number sentence

So to solve it...
3/5 = 0.3x
x = 3/5 ÷ 0.3 = 2

8 0

3 years ago

Find the perimeter and area of the polygon with the given vertices C (4,0) D (4,7) E (8,7) F(8,0)

Dafna11 [192]

The perimeter would be 7+7+4+4 or 14+8 which equals 22 and the area would be 7x4 which is 28

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3 years ago

A company provides a monthly pension to its employees. A person retiring at 62 retires and receives a full monthly pension. If t

IRISSAK [1]

Answer:

<em><u>The reduction is 8.6%</u></em>

Explanation:

Call F the full monthly pension of a person retiring at 62.

If a person continues to work the pension grows at a rate of 6% per year, compounded monthly, so use the compounded growing formula:

$Pension=F(1+r/12)^{12t}$

Where r = 6 / 100 = 0.06, and t = number of years after retirement.

<u>For retirement at 65.5</u>:

t = 65.5 - 62 = 3.5

$Pension=F(1+0.06/12)^{12\times 3.5}=1.233F$

<u>For retirement at 67</u>:

t = 67 - 62 = 5

$Pension=F(1+0.06/12)^{12\times 5}=1.349F$

<u>Percent reduction of people who retire at 65.5 compared to what they would receive at 67</u>:

$(1.349F-1.233F)\times 100/(1.349F)=8.6\%$

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3 years ago

SELECT ALL: The point (0, 10) is a solution to the following system of inequalities. Given that information, what could be the s

r-ruslan [8.4K]

63is the number Sorry I don’t know

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3 years ago

For z = –2 + 2i, which graph represents z and –2z?

iVinArrow [24]

Answer:

Graph B

Step-by-step explanation:

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3 years ago

Read 2 more answers