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givi [52]
3 years ago
5

What are the solutions to the quadratic equation 3x^2+15x-18=0

Mathematics
2 answers:
e-lub [12.9K]3 years ago
8 0
Based on my calculations x= 1, -6

mariarad [96]3 years ago
7 0

Hey there!!

The equation given = 3x² + 15x - 18 = 0

a = 3

b = 15

c = -18

Quadratic formula =

- b ± √(b² - 4ac ) / 2a

- 15 ± √ ( 225 + 216 ) / 6

-15 ± √ (  441 ) / 6

-15 ±  21 / 6

- 15 + 21 / 6

=  6 / 6 = 1  is one of the answer.

- 15 - 21 / 6

- 36 / 6  = -6 is the second answer.

Answers = 1 and -6

Hope my answer helps!


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HELP PLS 30) PTS
Verdich [7]

Answer:

32 ; 20

Step-by-step explanation:

Middle section: 26

Sum of parallel lengths: 2 × 26 = 52

Ratio of the sides:

100% : 62.5%

8 : 5

5/(8+5) × 52

20

8/(8+5) × 52

32

6 0
4 years ago
ou live in the building on the left in the drawing, and a friend lives in the other building. the two of you are having a discus
Alenkinab [10]

Answer:

1.3

Friend is wrong

Step-by-step explanation:

Given:

friend's claim: height of his building is more than 1.50 times the height of yours

line of sight to the top edge of the other building makes an angle of 21° above the horizontal

line of sight to the base of the other building makes an angle of 52° below the horizontal

Solution:

Let A be the height of your building is A

Let B+A his building is B higher than yours.

Let the distance between the buildings is x.  

then

tan 52 = A/x

tan 21 = B/x  

A/B = tan 52 / tan 21

      =  1.27994 / 0.38386

A/B = 3.33

(A + B) / A = 1.5 0

A/A + B/A = 1.50

1 + B/A = 1.50

B/A is basically (B/x) / (A/x)

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5 0
4 years ago
Write the equation of a quadratic function in standard form for the parabola that passes through the given points.
vazorg [7]

Answer:

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8 0
1 year ago
Find the volume of the following
Nadusha1986 [10]

Given:

A prism with right triangular base.

Base of triangle = 6 ft

Height of triangle = 8 ft

Height of prism = 7

To find:

The volume of the given prism.

Solution:

The volume of prism is:

V=Bh             ...(i)

Where, B is the base area and h is the height of the prism.

In the given figure, the base of the prism is a right angle triangle with legs 6 ft and 8 ft. So, the area of the base is:

B=\dfrac{1}{2}\times base\times height

B=\dfrac{1}{2}\times 6\times 8

B=\dfrac{48}{2}

B=24

Substituting B=24,\ h=7 in (i), we get

V=24\times 7

V=168

Therefore, the volume of the prism is 168 cubic ft.

6 0
3 years ago
Y=4x+28 sorry some is cut off
Rus_ich [418]
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7 0
3 years ago
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