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Maksim231197 [3]
3 years ago
9

Simplify expression 2i(4.5-20i)3i

Mathematics
1 answer:
Margaret [11]3 years ago
3 0

Answer:

-27+120i

Step-by-step explanation:

that is the answer

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Veronica tried to solve an equation step by step.
Svetach [21]
No steps are wrong. To solve this equation, you need to isolate the y. So, you would add 4.6 to both sides to cancel out the 4.6 on the right side and isolate the y.
3 0
2 years ago
What is y in this equation 6x+5y=-15
marishachu [46]

Answer:

y= -3 -6x/5

Step-by-step explanation:

6x+5y=-15

-6x          -6x

-----------------------------------

5y = -15 - 6x

divide both sides by 5

5y/5= -15/5 - 6x/5

y= -3 -6x/5

5 0
3 years ago
Read 2 more answers
PLEASE HELP!
IrinaVladis [17]

Answer:

Step-by-step explanation:

<h3>Sphere:</h3>

1) a) r =  7 cm

 \sf \boxed{\text{Volume of sphere=$\dfrac{4}{3}\pi r^3$}}

                             \sf =\dfrac{4}{3}*3.14*7*7*7\\\\= 1436 \ cm^3

 \sf \boxed{\text{\bf Surface area of sphere = $4\pi r^2$}}

                                           = 4*3.14 * 7 * 7

                                           = 615.44 cm²

b) r= 8.4 cm

     Volume = \dfrac{4}{3}\pi r^3

                  \sf =\dfrac{4}{3}*\dfrac{22}{7}*8.4*8.4*8.4\\\\= 2483.7 \ cm^3

   Surface area = 4*3.14*8.4*8.4

                         = 887.04 cm²

<h3>Hemisphere:</h3>

      a) r = 6 cm

     \sf \boxed{\text{\bf Volume of hemisphere =$\dfrac{2}{3} \pi r^3$}}

                                                \sf =\dfrac{2}{3}*3.14*6*6*6\\\\= 452.16 \ cm^3

        \sf \boxed{\text{\bf Surface area of hemisphere=3 \pi r^2}}\sf \boxed{\text{\bf Surface area of hemisphere = $3 \pi r^2$}}

                                                            = 3 * 3.14 * 6 * 6

                                                             = 339.12 cm²

                                                           

                       

3 0
2 years ago
What is the equation of a line that is perpendicular to the x-axis and passes through (3,-2)
34kurt

Answer:

x = 3

Step-by-step explanation:

we know that if we have an original line and we are finding the perpendicular we know that the slope of the second line is gonna be the negative reciprocal of the first line and given that we know it must be  perpendicular to the original line it will be heading downwards on the y axis with no slope so instead of y equals it will be x equals and we know that our x value of the point given is three so the answer is x = 3

4 0
3 years ago
Read 2 more answers
Find the solutions of the quadratic equation 6X^2- 6x-2=0
Viefleur [7K]
Hopefully this is good

6 0
3 years ago
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