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2 years ago

Help would be greatly appreciated!

Mathematics

1 answer:

NNADVOKAT [17]2 years ago

5 0

Answer:

D the answer is D, thats when cos and sin are equal together

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What are the solutions to this problem? (use the quadratic formula and i)<br><br> -2x^2+5x-11=0

Sever21 [200]

Step-by-step explanation:

The quadratic formula is:

$x = \frac{-b \pm\sqrt{b^2-4ac} }{2a}\\$

A, in this case, is -2.

B is 5

C is -11

x = $\frac{-5 \pm\sqrt{5^2-4(-2)(-11)} }{2(-2)}$

x = $\frac{-5\pm\sqrt{25 -88} }{-4}\\$

x = $\frac{-5\pm\sqrt{-63}}{-4}$

x = $\frac{-5+i\sqrt{63} }{-4}$ and $\frac{-5-i\sqrt{63} }{-4}$

We can break up the fraction to make it easier on our eyes

x = $\frac{5}{4}\pm\frac{i\sqrt{63} }{4}$

$\frac{\sqrt{63} }{4}$ ≈1.9843

x = $1.25 + 1.9843i\\1.25 - 1.9843i$

7 0

3 years ago

Read 2 more answers

Which of the following correctly describes the variation in the equation r=l/pt

nikitadnepr [17]

If i can remember correctly, R = i/pt
p and t are directly related
R and I are directly related

7 0

3 years ago

Students in the sixth grade are raising money for an end of year camping trip. So far they have raised 240. This is 2/5 of the c

Sauron [17]

Answer: $600

Step-by-step explanation:

2/5 = 240 of the trip

1/5 = 120 of the trip

3/5 = 360 of the trip

4/5 = 480 of the trip

5/5= the whole trip $600

6 0

3 years ago

The measures of a triangle are 2x,3x and 4x what is the degree measure of the largest angle of the triangle

Pavel [41]

9x=180
X= 20

Largest 4x 4(20) = 80 degrees

4 0

3 years ago

What are the amplitude and midline?

Vadim26 [7]

Answer:

Amplitude 3; midline y=2

Step-by-step explanation:

The midline is the mean of both ends of the function in the graph.

$\frac{5-1}{2}=2$

The amplitude is the vertical distance between the midline and one of the end points.

$5-2=3$

(sorry for the basic math, i just want to make sure you know where im getting the values from)

7 0

3 years ago