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OverLord2011 [107]
3 years ago
10

Help ME PLEASE> IF YOU SOLVE THIS I WILL GIVE YOU BRAINLIEST AND 20 points!

Mathematics
1 answer:
NeX [460]3 years ago
5 0
0.25x² + 8.5 - 17 = 0

1)
a = 0.25
b = 8.5
c = -17


2)

- 8.5 ± √(8.5)²-4(0.25) (-17)
------------------------------------------
2(0.25)



3)

-34 ± √1428
----------------------
2


4)

-35.894 and 35.894
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2. How much interest is earned on a principal of $200 invested at an interest rate of 9% for eight
zavuch27 [327]

Answer: 177

Step-by-step explanation:

8 0
3 years ago
The volume of a square prism is 144x^3 +216x^2 +81x
Svetach [21]

Answer:

Equation for the perimeter of prism's square face: 16x + 12

Step-by-step explanation:

Volume of Square prism = Length * Width * Height

                                         = 144 x^3 + 216 x^2 +81 x

taking 9x common = 9x( 16 x^2 + 24 x + 9)

                               = 9x ( (4x)^2 + 2(4x)(3) + (3)^2 )

                                = 9x ( 4x+3)^2

so the length is 9x, width is 4x+3 and height is 4x+3

Now, Perimeter of prism's square face = 2* Width + 2 * Height

                                                                = 2* (4x+3) + 2* (4x+3)

                                                                = 8x +6 + 8x + 6

                                                                = 16x +12

                   

6 0
3 years ago
Is this correct?<br><br> |-4+5i| √-4²+5²<br> √-16+25<br> √-9<br> =3
melamori03 [73]
No it is not, √-9=3i
5 0
3 years ago
V+2/v + 4/3v =11<br> How to solve this ?
Goshia [24]

Answer:

0.189

4.525

Step-by-step explanation:

v/1 + 2/v + 4v/3 = 11

we can eliminate denominators if we distribute 3v to each term:

3v(v/1 + 2/v + 4v/3) = 3v(11)

3v² + 6 + 4v² = 33v

7v² - 33v + 6 = 0

factor this trinomial:

there are no factors of 6 that would add to -33 so we can use the quadratic formula to solve:  (-b ± √b²-4ac) / 2a

a = 7

b = -33

c = 6

[33 ± √(-33)² - 4(7)(6)] / 2(7)

(33 ± √1089 - 168) / 14

(33 ± √921) / 14

(33 ± 30.35) / 14

(33+30.35) / 14 =  4.525

(33-30.35) / 14 =  0.189

3 0
3 years ago
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