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Sonbull [250]
2 years ago
6

The equation x2 - 9 = 0 has real solution(s). DONE

Mathematics
1 answer:
Andru [333]2 years ago
5 0

Answer:

{-3, 3}

Step-by-step explanation:

x^2 - 9 = 0 can be written in factored form as (x -3)(x + 3) = 0.  Letting each factor equal zero separately and solving for x, we get x:  {-3, 3}

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A pizza is cut into twelve pieces. Describe the steps you would take to find the area of one slice of the pizza.
DanielleElmas [232]
Hey there!

First, you would need to find the area of the circle/pizza . . .

Formula of finding area → pi*r²  (Pi * the radius of the circle/pizza²)
---
Once you have found the area, you would need to divide the result by the number 12 since there is a total of 12 slices in the pizza.
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This is how you would find the area of one slice of pizza.
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I hope this helps you.
Have a great day! :)
5 0
3 years ago
the fourth term of an arithmetic sequence is 141, and the seventh term is 132. what is the first term?
Cerrena [4.2K]
The 1st, 4th, and 7th terms make an arithmetic sequence of their own. The 4th term is the average of the 1st and 7th, so ...
   (1st +7th)/2 = 4th
   1st + 7th = 2×4th
   1st = 2×4th - 7th

The first term is ...
   2*141 - 132 = 150
7 0
3 years ago
8 gis can fold 5 paper cranes in 6 minutes. how long will it take 36 girls to fold 120 paper cranes? with proper working.​
nikitadnepr [17]
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8 0
3 years ago
Complementary events are described as the events of one outcome happening and that outcome not happening. Given that definition,
masya89 [10]

Complementary events are the events which are opposite of the given event.

For example, for a "rainy day", its complimentary event is "not a rainy day".

We can also say, If A is a given event, then " not A" is its complimentary event.

In the given question we have been given the event of choosing a girl's name when drawing names from a cup in class.

Now in class as there can be boys or girls, the complimentary even of choosing a girl's name is choosing a boy's name.

Option C) is the right answer.


3 0
3 years ago
Read 2 more answers
Find the two points where the the line crosses the x and y axis for the given equation.
nydimaria [60]
To figure out where each crosses the x and y axis simply plug in 0 for y and x respectively.

x intercept is where y = 0
y intercept is where x = 0

a) x intercept 

ax + b(0) = c

c = ax

x = c/a  so the x intercept is (c/a, 0)

y intercept 

a(0) + by = c
0 + by = c
y = c/b, so the y intercept is (0,c/b)

Jus repeat the process for part b 

b) x intercept 
ax - 0 = c
x = c/a, so the x intercept is the same, (c/a , 0)

y intercept

0 - by = c
y = -c/b, so the y intercept is different from before (0, -c/b)
7 0
2 years ago
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