Here is a dot plot that shows the ages of teachers at a school.

Mathematics

1 answer:

lisabon 2012 [21]2 years ago

7 0

Answer:

whats the answer?

Step-by-step explanation:

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alukav5142 [94]

The answer is B - 43.25

The two congruent sides will have congruent angles. One angle measurement is given. Triangle angles equal 180.

Take 180 and subtract the given angle 93.5. Then divide by 2 to get the measurements x and the other unknown.

180 - 93.5 = 86.5

86.5/2 = 43.25

5 0

2 years ago

Calculate the discriminant and use it to determine how many real-number roots the equation has.

lakkis [162]

Discriminant = sq root (-17^2 -4*3*10)
discriminant = sq root (289 -120)
discriminant = sq root (169)
The discriminant is positive so the equation will have 2 rational solutions.

4 0

2 years ago

Find the slope of the line (7, 5) and (3, -4) on it.

Karolina [17]

Answer:

9/4

Step-by-step explanation:

4 0

3 years ago

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Solve the equation for x, |x-2|=4

Korvikt [17]

The answer would be either 6 or -2

4 0

3 years ago

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Find the derivative dy / dx for y = x^3 - 5x / x^2 - 1

soldier1979 [14.2K]

$Use\\\\\left(\dfrac{h(x)}{g(x)}\right)'=\dfrac{h'(x)g(x)-h(x)g'(x)}{[g(x)]^2}\\\\\text{We have}\\\\h(x)=x^3-5x\to h'(x)=3x^2-5\\\\g(x)=x^2-1\to g'(x)=2x\\\\f(x)=\dfrac{x^3-5x}{x^2-1}\to f'(x)=\left(\dfrac{x^3-5x}{x^2-1}\right)'\\\\=\dfrac{(x^3-5x)'(x^2-1)-(x^3-5x)(x^2-1)'}{(x^2-1)^2}\\\\=\dfrac{(3x^2-5)(x^2-1)-(x^3-5x)(2x)}{(3x^2-5)^2}\\\\=\dfrac{3x^4-3x^2-5x^2+5-2x^4+10x^2}{(x^2-1)^2}\\\\=\dfrac{x^4+2x^2+5}{(x^2-1)^2}\\\\Answer:\ \left(\dfrac{x^3-5x}{x^2-1}\right)'=\dfrac{x^4+2x^2+5}{(x^2-1)^2}$

8 0

2 years ago