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stira [4]
4 years ago
6

IF U SEE THIS PLZ HELP IM FAILING! 20 POINTS AND WILL MARK BRAINLIEST!

Mathematics
2 answers:
marshall27 [118]4 years ago
6 0

Answer:

mc013-1.j pg

Step-by-step explanation:

The answer is A

astraxan [27]4 years ago
4 0

Answer:

A :)

Step-by-step explanation:

The y-intercept (initial value) is 10 and it has a slope of -1,

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Solving Quadratic Equations with Complex SolutionsThe discriminant: D=b^2-4acQuestion:5x^2-2x+1=0
fomenos

• The value of the discriminant ,D= -16

,

• The solution to the quadratic equation is

x=\frac{1+2i}{5}\text{     or    }\frac{1-2i}{5}

Step - by - Step Explanation

What to find?

• The discriminant d= b² - 4ac

,

• The solution to the quadratic equation.

Given:

5x² - 2x + 1=0

Comparing the given equation with the general form of the quadratic equation ax² + bx + c=0

a=5 b=-2 and c=1

Uisng the quadratic formula to solve;

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

The discriminant D=b² - 4ac

Substitute the values into the discriminant formula and simplify.

D = (-2)² - 4(5)(1)

D = 4 - 20

D = -16

We can now proceed to find the solution of the quadratic equation by substituting into the quadratic formula;

x=\frac{-(-2)\pm\sqrt[]{-16}}{2(5)}

Note that:

√-1 = i

x=\frac{2\pm\sqrt[]{16\times-1}}{10}

x=\frac{2\pm\sqrt[]{16}\times\sqrt[]{-1}}{10}x=\frac{2\pm4i}{10}x=\frac{2}{10}\pm\frac{4i}{10}x=\frac{1}{5}\pm\frac{2}{5}ix=\frac{1\pm2i}{5}

That is;

\text{Either x=}\frac{1+2i}{5}\text{ or     x=}\frac{1-2i}{5}

7 0
1 year ago
Using the formula C=2TTr, find the circumference of a circle with a diameter of 28 in. round your answer to the nearest inch
slava [35]

radius = diameter/2

so 28/2=14

 using 3.14 for PI

2*3.14*14 = 87.92 = 88 inches

3 0
3 years ago
Read 2 more answers
5 left! Help please! So close to being done! a. 75. b. 66 c. 122 d. 98. thank you
user100 [1]

Answer:

98

Step-by-step explanation:

180- 122 = 58

58 + 24= 82

180- 82= 98

5 0
3 years ago
Read 2 more answers
What is equal to -5/4​
sleet_krkn [62]

− 10/8

− 15/12

− 20/16

− 25/20

− 40/32

These are all equal, the list could go on but here are many

8 0
3 years ago
Rotate the given triangle 90°
kati45 [8]

9514 1404 393

Answer:

  \left[\begin{array}{ccc}0&-1&-2\\0&-3&5\end{array}\right]

Step-by-step explanation:

The rotation matrix for 90° CCW is ...

  \left[\begin{array}{cc}0&-1\\1&0\end{array}\right]

Then the rotated coordinates are ...

  \left[\begin{array}{ccc}0&-1\\1&0\end{array}\right]\cdot\left[\begin{array}{ccc}0&-3&5\\0&1&2\end{array}\right]=\left[\begin{array}{ccc}0&-1&-2\\0&-3&5\end{array}\right]

_____

The transformation of each ordered pair is ...

  (x, y) ⇒ (-y, x)

4 0
3 years ago
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