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soldier1979 [14.2K]
3 years ago
14

Solve x^2-8x-9=0 using the x method

Mathematics
2 answers:
Artist 52 [7]3 years ago
8 0

Answer: <em>x=9,-1</em>

Step-by-step explanation:

<em>First, we are gonna start out with finding two numbers that multiply to equal -9 and add up to equal -8</em>

<em>Those numbers would be -9 & 1</em>

<em>-9+1=-8</em>

<em>-9x1=-9</em>

<em>Now we have </em>

<em>(x-9)(x+1)</em>

<em>x-9=0   x+1=0</em>

<em>   +9 +9   -1  -1</em>

<em>x=9      x=-1</em>

Nikitich [7]3 years ago
6 0

Answer:

x=1,--9

Step-by-step explanation:

Move all terms to the left side and set equal to zero. Then set each factor equal to zero x=1,--9

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Please help !!!!!!!!!!!!
zhannawk [14.2K]

Answer:

25+40

Step-by-step explanation:

for the area of a triangle you multiple the base times the height. for the area of the square it is the length times width.

NOTE: to completely answer just add 25+40

6 0
3 years ago
manuel wanted to put a brick walkway through his backyard from door to bbq area. the walkway is going to be 6 yards long. so far
In-s [12.5K]

Answer:

155 inches

Step-by-step explanation:

1 yard = 3 feet = 36 inches ; 6 yards = 18 feet = 216 inches ; 216 inches-61 inches = 155 inches

5 0
3 years ago
The corporate team-building event will cost $14 if it has 7 attendees. If there are 9
kobusy [5.1K]

Answer: for 9 attendees it would cost $18

Step-by-step explanation: First you have to find the unit rate. So for every 7 attendees it costs $14, divide them both by the GCF which is 7. 14÷7=2

7÷7=1

So for every 1 attendee it is $2.

Now to figure out how much it would cost for 9 attendees, figure out what you have to do to 1 to get 9. Multiply it by 9.

And whatever you do to one number you have to do for the other. So $2 • 9 = $18

So for every 9 attendees it costs $18.

5 0
3 years ago
What is the volume of a sphere that has a diameter of 17 centimeters​
Sedaia [141]

Answer:

2571.14

in terms of pi: 818.83

Step-by-step explanation:

7 0
3 years ago
Help asap..............
MatroZZZ [7]

The common denominator for 25 and 20 would be 100

25 x 4 = 100

20 x 5 = 100

Rewrite 14/25 as 14 x 4 / 25 x 4 = 56/100

Rewrite 11/20 as 11 x 5 / 20 x 5 = 55/100

14/25 is greater than 11/20

14/25 > 11/20

3 0
3 years ago
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