Solve each quadratic equation by factoring.0=8a² -10a+3

Answers

Answer 1

Answer: 8a² - 10a + 3 = 0
x = -10 +/- √(-10)² - 4(8)(3)
      2(8)
x = -10 +/- √100 - 96
   16
x = -10 +/- √4
16
x = -10 +/- 2
   16
x = -10 + 2 x = -10 - 2
   16    16
x = -8 x = -12
      16    16
x = -1/2 x = -3/4

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I want you to show me how you did it so I can show my work

Answers

Answer:

lol what are we even supposed to answer?

Step-by-step explanation:

Kalon and his friend Marna own a chimney sweep service company. Working together, they can clean a chimney in 1 5/7 hours. If it takes Kalon 4 hours to clean a 20-foot chimney by himself, how long does it take Marna to clean the same size chimney by herself?

Answers

So to set up the equation we have:4M4+M=127
28M=12(4+M)
28M=48+12M
28K−12M=48
(28−12)M=48
16K=48
M=4816
M=3So Marna can clean the chimney alone in 3 hours

Final answer:

To find the time it takes for Marna to clean a 20-foot chimney by herself, we first determine the combined and individual rates of Marna and Kalon. We then subtract Kalon's rate from the combined rate to find Marna's rate and subsequently her individual cleaning time which is 3 hours.

Explanation:

The subject of this question is Mathematics, specifically dealing with the concept of rates and time. To solve this problem, we first need to express the combined rate of Kalon and Marna working together. The combined rate is expressed as 1 job per 1 5/7 hours, which simplifies to 7/12 of a chimney per hour.

Kalon's individual rate is 1 job per 4 hours, this simplifies to 1/4 of a chimney per hour. The formula we'll use is (1/Marna's time) = combined rate - Kalon's rate. Therefore, Marna's rate will be (7/12 - 1/4), simplified to 1/3 of a chimney per hour. Hence, Marna would require 3 hours to clean a 20-foot chimney by herself.

Learn more about Rates and Time here:

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The amount in a savings account increased from 200 to 216. What was the percent of increase?

Answers

216/200=%
1.08 which equals 108%

What is the complement of pie/4

Answers

complement is adds to 90 degrees=360/4
2pi=360
divid both sides by 4
pi/2=90 degrees

so
pi/4+comlement=pi/2
pi/4+complement=2pi/4
minus pi/4 both sides
comlement=pi/4

the comlement i pi/4

How to find excluded values ?

Answers

Hello,

The method is to find the roots of the denominator.

x²-2x-15=x²+3x-5x-15=x(x+3)-5(x+3)=(x+3)(x-5)

Roots are x=-3 and x=5

Answer C

How many sides does a hexagon have?
A. 5
B. 6
C. 7
D. 8

Answers

A pentagon has 5 sides.
A hexagon has 6 sides.
A heptagon has 7 sides.
An octagon has 8 sides.

A hexagon has 6 sides.

Your final answer is B. 6.

An Hexagon Has Six Sides. So B.

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