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vitfil [10]
3 years ago
9

Find the value of x that makes m\ \n.

Mathematics
1 answer:
Fofino [41]3 years ago
5 0

Answer:

x = 15

Step-by-step explanation:

These angles are supplementary so you'd set up an equation like 3x -15 +150 = 180 then solve for x from there.

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Explain why a quadratic equation with a positive discriminant has two real solutions, a quadratic equation with a negative discr
Bad White [126]

Answer:

A quadratic equation can be written as:

a*x^2 + b*x + c = 0.

where a, b and c are real numbers.

The solutions of this equation can be found by the equation:

x = \frac{-b +- \sqrt{b^2 - 4*a*c} }{2*a}

Where the determinant is D = b^2 - 4*a*c.

Now, if D>0

we have the square root of a positive number, which will be equal to a real number.

√D = R

then the solutions are:

x = \frac{-b +- R }{2*a}

Where each sign of R is a different solution for the equation.

If D< 0, we have the square root of a negative number, then we have a complex component:

√D = i*R

x = \frac{-b +- C*i }{2*a}

We have two complex solutions.

If D = 0

√0 = 0

then:

x = \frac{-b +- 0}{2*a} = \frac{-b}{2a}

We have only one real solution (or two equal solutions, depending on how you see it)

3 0
3 years ago
Anybody know how to solve this?
kirza4 [7]

Answer:

1

Step-by-step explanation:

Anything to the 0 power is 1.

Hope this helps!

:)

6 0
2 years ago
Read 2 more answers
Which of the following is equivalent to (-2/3) with a exponent of 3
Zinaida [17]

Answer:

( -8,27) I believe

Step-by-step explanation:

Because you times 2x2x2=8 and 3x3x3=27. Getting( -8,27)

Hope this helps :)

4 0
2 years ago
Martin earned the following scores on his last five tests.
Arada [10]
IQR= 18 is the interquartile range of his scores.
8 0
3 years ago
PLEASE ANSWER + BRAINLIEST!!!
quester [9]
Use the Cosine Rule

q^2 = 20^2 + 30^2 - 2^20*30 cos 15

       =  140.89

so q = sqrt 140.89 =  11.9 (answer)
6 0
3 years ago
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