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vodka [1.7K]
3 years ago
15

If using the method of completing the square to solve the quadratic equation

Mathematics
1 answer:
Makovka662 [10]3 years ago
7 0

Answer:

=-1+\sqrt{15}i,\:x=-1-\sqrt{15}i

Step-by-step explanation:

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Area of a Triangle
jek_recluse [69]

Answer:

3.51 (round to the nearest hundreds)

Step-by-step explanation:

PART A

slope of the line passing through AC : (6-1)/(1-2) = 5/-1 = -5

equation of the line passing through B and perpendicular to AC:

y-3 = 1/5(x-3)

y-3 = 1/5x -3/5

y = 1/5 x - 3/5 + 3

y = 1/5 x + (-3+15)/5

y = 1/5 x + 12/5

PART B

line that passes through the points A and C

y-1 = -5(x-2)

y = -5x+10 + 1

y = -5x + 11

Interception of the lines

y = 1/5x + 12/5

y = -5x + 11

-5x + 11 = 1/5x + 12/5

-25x +55 = x + 12

26x = 43

x = 43/26

y = -5(43/26) + 11

y= -215/26 + 11

y = (-215+286)/26 = 71/26

D (1.65, 2.73)

PART C

AC = \sqrt{(1-2)^2 + (6-1)^2} = \sqrt{1 + 25} = \sqrt{26} = 5,09902

BD = \sqrt{(3-1.65)^2 + (3-2.73)^2} = 1,376735

PART D

AREA = (5,09902 * 1.376735)/2 = 3,509999

8 0
3 years ago
A solid figure with one circular base and one curved surface
gulaghasi [49]
What is the net of the shape? I would say a ball, or a cylinder.
8 0
3 years ago
Read 2 more answers
PLEASE HELP I WILL GIVE BAINY LIST TO WHOEVER ANSWERS ALL THE QUESTIONS !!!!!
sergejj [24]

Answer:

1. 97\frac{3}{4}

2. 3x6\frac{3}{4}=20\frac{1}{4}

3. 77\frac{1}{2}

4. Yes (explanation given below)

Step-by-step explanation:

1. Find the area of the wall including the door...

Just multiply the numbers for the width and length.

11\frac{1}{2} x 8\frac{1}{2}=97\frac{3}{4}

And now, as you can see.

97\frac{3}{4} is our answer for 1.

2. Find the area of the door. (improper fraction)

Again, we just have to multiply, then simplify, and remember to keep it in improper fraction format.

3x6\frac{3}{4}=20\frac{1}{4}

so now, we can see that that is the area of the door, but according to the question, we have to leave the answer in the improper fraction format. To turn a mixed number into a improper fraction, we have to multiply the denominator of the fraction with the whole then, add the numerator, the answer that we get is going to be the numerator of the improper fraction and the denominator remains the same.

20 1/4 = 81/4 (improper fraction)

So, 81/4 is our answer for 2.

3. Without door space, give how much wall area there is. (mixed number)

So, as we already know that the door covers up 20\frac{1}{4}, so all what we have to do is, take the area of the Whole wall and door and subtract it by the door area.

WHOLE wall = 97\frac{3}{4}

Door only = 20 \frac{1}{4}

97\frac{3}{4}-20\frac{1}{4} = 77\frac{1}{2}

So, hence, the answer for 3. is 77\frac{1}{2}

4. Does Amelia have enough paint? Explain...

Yes, amelia has enough paint for covering the whole intire wall because she has enough paint for a 100 square feet, and the actual surfact area of her wall is JUST 97 3/4 square feet. So, she definitely has enough paint to cover that wall and door.

Thank You! Please mark me brainliest so that I get encouraged to make more great answers like this one!

5 0
2 years ago
Read 2 more answers
Chuck combines 6.42 liters of red paint with 6.87 liters of blue paint to make purple paint. He pours the paint equally into 3 c
seraphim [82]
It would be 4.005
hope im right

3 0
3 years ago
Graph the function f(x)= cos (πx/2)
tresset_1 [31]

Answer:

Step-by-step explanation:

Here it is

3 0
2 years ago
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