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diamong [38]
2 years ago
13

Using the Completing the Square method, what are the zeros of the quadratic function f(x) = 2x2 + 8x – 3?

Mathematics
1 answer:
Vlad1618 [11]2 years ago
8 0

Answer:

A

Step-by-step explanation:

I got it right on Edge...Don't miss this question!

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What is the area of the triangle shown below
kykrilka [37]

Answer: 60

Step-by-step explanation:

Using Heron's formula, we know that

Step 1: Calculate "s" (half of the triangles perimeter):

s =  (a+b+c)/2

Step 2: Then calculate the Area:

Herons formula A = sqrt( s(s-a)(s-b)(s-c) )

So S = 36/2 = 18

so \sqrt{18(18-13)(18-13)(18-10)}

So our final answer is the square root of 3600, which equals 60.

5 0
3 years ago
Three vectors A, B, C in three-dimensional space satisfy the following properties
wlad13 [49]

Answer:

\frac{7}{8}\pi

Step-by-step explanation:

observe

||a–b+c|| = ||a+b+c||

(a-b+c)² = (a+b+c)²

(a+b+c)² – (a-b+c)² = 0

((a+b+c)+(a-b+c))((a+b+c)–(a-b+c)) = 0

(2a+2c)(2b) = 0

(a+c)b = 0

a•b + c•b = 0

||a||×||b||×cos(π/8) + ||c||×||b||×cos(θ) = 0

\cos(\theta)=-\frac{||a||\times ||b|| \times \cos(\frac{\pi}{8})}{||c||\times ||b||}=-\cos(\frac{\pi}{8})\\ \theta=\frac{7}{8}\pi

3 0
4 years ago
Mr. Howard is building a dog pen around his square yard. Each side is 144 ft long. How many yards of fencing does he need to pur
slamgirl [31]

Answer:

192

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
What is 6 3/4 x 3/5<br><br> A) 54/20<br><br> B) 75/12<br><br> C) 81/20<br><br> D) 9/4
steposvetlana [31]
The answer you are looking for is C my friend
8 0
3 years ago
The statue of liberty is 151 ft tall. calculate its height in meters answers
White raven [17]
1 feet = 0.3048 m

Height of statue is 151 ft.

For converting it into meter , we will multiply it 0.3048.

So 151 ft = 151 * 0.3048 meter.
                 = 46.0248 meter.

So  the height of statue in meter = 46.0248 meter.
6 0
4 years ago
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