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Arturiano [62]
2 years ago
13

Find the solution set of the quadratic equation over the set of complex numbers -7x^2+12x=10

Mathematics
2 answers:
Margarita [4]2 years ago
7 0

Answer: it’s A

Step-by-step explanation:

I chose b and got it wrong and showed that it was a

Zarrin [17]2 years ago
3 0
I’m not sure honestly maybe B
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What is 20 times greater than 0.08?
Free_Kalibri [48]
1.6 is 20 times greater the 0.08.
3 0
2 years ago
10 ft
wariber [46]

Answer:

<em>The perimeter of given figure  = 56.56 ft</em>

Step-by-step explanation:

<u>Step(i):-</u>

From diagram

      The length of the rectangle = 10 ft

     The width of the rectangle = 8 ft

     Perimeter of the rectangle

                      = 2 ( l+w)

                     =  2 ( 10 + 8)

                     = 2 × 18

                     = 36

<u><em>Step(ii):-</em></u>

The semi circle is included in the given diagram

<em>Now we will find the perimeter of semicircle</em>

<em>We know that </em>

<em>         perimeter  of the circle </em>

<em>           p = 2πr + d</em>

<em>         perimeter of the semicircle</em>

<em>         </em>P = \frac{1}{2} 2\pi r + d<em></em>

<em>        P = πr + 2 r    (∵ d = 2 r)</em>

<u><em>Step(iii):-</em></u>

<em> From diagram the diameter of semicircle is equal to the width of the rectangle </em>

<em>       d = 8</em>

<em>      d = 2 r = 8</em>

<em> The radius of the circle 'r' = 4   </em>

<em>     perimeter of the semicircle</em>

<em>        P = πr + 2 r   </em>

<em>       P = 3.14 ( 4) + 8</em>

<em>      P= 20.56</em>

<u><em>Conclusion:-</em></u>

<em>The perimeter of given figure</em>

<em>                     = perimeter of rectangle + perimeter of semicircle</em>

                    = 36 + 20.56

                   =56.56 ft

4 0
3 years ago
Can someone help me with the volumes of pyramids please for a brainless and points​
Rufina [12.5K]

Answer:

Step-by-step explanation:

Volume of a pyramid = (l×b×h)/3

V = 128cm^3,

l = 8cm

b = 8cm (/because is a square base)

Substituting this values

128 = (8×8×h)/3

Cross multiply

128×3 = 64h

384 = 64h

Dividing through by 64

h = 384/64

h = 6cm

Height is 6cm

6 0
3 years ago
What is the product of (3a 2)(4a2 – 2a 9)?12a3 − 2a 1812a3 6a 912a3 − 6a2 23a 1812a3 2a2 23a 18
timama [110]
To get the product of (3a + 2) and (4a² - 2a + 9), we can apply the rules of distribution over multiplication and have 3a(4a² - 2a + 9) + 2(4a² - 2a + 9) 12a³ - 6a² + 27a + 8a² - 4a + 18 Adding like terms of the same degree, we can simplify it into 12a³ + 2a² + 23a + 18 Therefore, the answer is D<span>. </span>
5 0
3 years ago
Read 2 more answers
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lyudmila [28]

Answer:

Step-by-step explanation:

Rate = (20½ pounds)/(4 hours) = (5⅛ pounds)/hour

9 hours × (5⅛ pounds)/hour = 46⅛ pounds

4 0
2 years ago
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