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frutty [35]
2 years ago
7

Which are the solutions of the quadratic equation?

Mathematics
2 answers:
pochemuha2 years ago
8 0
X= 9+√105/2, 9-√105/2
aivan3 [116]2 years ago
6 0
So here just plug values into the quadratic formula x= -b+- sqr b^2-4ac / 2a
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Solve the proportion for the variable given. 4/v+10 - 6/v+6
belka [17]

The\ domain:\\v+10\neq0\ \wedge\ v+6\neq0\\v\neq-10\ \wedge\ v\neq-6\\\\\dfrac{4}{v+10}=\dfrac{6}{v+6}\ \ \ \ \ |\text{cross multiply}\\\\4(v+6)=6(v+10)\ \ \ \ |\text{use distributive property}\\\\(4)(v)+(4)(6)=(6)(v)+(6)(10)\\\\4v+24=6v+60\ \ \ \ \ |\text{subtract 24 from both sides}\\\\4v=6v+36\ \ \ \ |\text{subtract 6v from both sides}\\\\-2v=36\ \ \ \ |\text{divide both sides by (-2)}\\\\\boxed{v=-18}\in D

7 0
3 years ago
A sphere has a diameter of 24 units. What is its volume in cubic units?
DiKsa [7]
Hello!

The equation to find the volume of a sphere you use the equation

\frac{4}{3}  \pi  r^{3}

r is radius which is half the diameter

put in 3.14 for pi and 12 for r

\frac{4}{3} *3.14* 11^{3}

This gives us the answer of 7234.56 cubic units

Hope this helps!
4 0
3 years ago
Read 2 more answers
A couple decided to have 4 children.
AveGali [126]
See below the theee of possibilities:

BBBB
BBBG
BBGB
BBGG
BGBB
BGBG
BGGB
BGGG
GBBB
GBBG
GBGB
GBGG
GGBB
GGBG
GGGB
GGGG

There are 16 differents possibilities.
In 11 of them have at least 2 boys

So probability is 11/16
7 0
3 years ago
How is 225 divisible by nine
Ivanshal [37]
A number is divisible by 9 if and only if the sum of its number is a multiple of nine.

2+2+5=9 hence 255 is divisible by 9.
5 0
3 years ago
Read 2 more answers
HELP ASAP PLS.
Sindrei [870]

Step-by-step explanation:

I have no idea if I'm doing it right but my guess would be to take the values that we get from f(x) and g(x) when x = 1.  Therefore we get that f(x) is equal to 4 and g(x) is equal to -1.  We than just do f/g which is 4/-1 which gives us the final answer of -4 which is option B.

Answer:  Option B, -4

5 0
2 years ago
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