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Ugo [173]
4 years ago
10

What formulae can be used to solve quadratic equation in two variables?​

Mathematics
1 answer:
bazaltina [42]4 years ago
4 0
The formula that could be used ax*2 + bx + c = 0
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What could be the intersection of plane PRS and plane QRS?
Mariana [72]

Answer:

The plane PRS passes through the points P, R and S. So it contains the line RS. Also the plane QRS passes through the points Q, R and S. So it contains the line RS as well. Since both the planes contain the line RS, the line RS must be the intersection of plane PRS and QRS

Step-by-step explanation:

8 0
3 years ago
Can someone help me with 30-32 please?
Harman [31]
30 is A to the second power 31 is X to the first power 32 is just M
8 0
4 years ago
Pls help or explain steps ​
Tems11 [23]

Solving for a variable means to rewrite the equation so that the desired variable is alone on one side. So, we have to "move" all the other variables/constants in order to make this happen. We are allowed to add/subtract the same quantity from both sides, or to multiply/divide both sides by any non-zero number.

Let's start with the first example: we are given

11. d=rt

the variable r is not alone on the right hand side because it is multiplied by t. We can reverse this by dividing both sides by t: the equation becomes

\dfrac{d}{t}=\dfrac{rt}{t}=r

So, we have written the equation as r=\frac{d}{t}, which means that r now sits alone on one side of the equation, and thus we have solved the equation for r!

Similarly, we do all the others:

12. f=v+at

Subtract at from both sides to get

f-at=v

13. Ax+By=C

Subtract By from both sides to get

Ax=C-By

Now divide both sides by A to get

x = \dfrac{C-By}{A}

14. A=\frac{1}{2}Pl

Multiply both sides by 2:

2A=Pl

Divide both sides by P:

\dfrac{2A}{P}=l

4 0
3 years ago
Read 2 more answers
Your friend deposits $1900 in an account that earns 6% compounded
iVinArrow [24]

Answer:

$2,128

Step-by-step explanation:

6% + 6% = 12%

12% x 1900 = 228

1900 + 228 = 2128

her accoun balance will be $2128 after 2 years

mark as brainlest :)

6 0
3 years ago
Read 2 more answers
Using pie symbol how can you find 355 as the volume of a cylinder?
Akimi4 [234]
Hello,

V=π R²h=355=5*71
1) h=355 , R=√(1/π) ,V=π*(√(1/π)²*355=π/π * 355=355

2) h=5, R=√(71/π), V=π*(√(71/π))²*5=71*5=355

3) a>0,h=a, R=√(355/(πa)), V=π*(√(355/(πa)))²*a=π*355/(πa) * a=355



6 0
3 years ago
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