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3 years ago

Help please! Write the series 7 + 9 + 11 + . . . + 21 in summation notation

Mathematics

1 answer:

Artist 52 [7]3 years ago

5 0

I hope you can open the attachment.
The expression is 2x + 5
starting at 1 and ending at 8

Download docx

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Examples of spiral motion<br>

natta225 [31]

Answer:Examples of Spiral Movement are:

Step-by-step explanation:

1)Cyclone

2)Spiral fern

8 0

3 years ago

Ignore “c”. i need help with 5 and 6. i suck at this lol. brainliest for whoever gives best answer

34kurt

Answer:

5 = 1/3

6 A = 24%

6 C = 26%

Step-by-step explanation:

sorry if its wrong i didn't have a lot of time

6 0

2 years ago

What are the real and complex solutions of the polynomial equation X^3-216=0

vazorg [7]

Answer:

$6,\ -3+3\sqrt{3}i,\ -3-3\sqrt{3}i$

Step-by-step explanation:

Factor the equation $x^3-216=0$ using formula for difference of the cubes:

$x^3-216=(x-6)(x^2+6x+36),$

then

$x-6=0\ or\ x^2+6x+36=0.$

1. The equation $x-6=0$ has real solution $x=6.$

2. The equation $x^2+6x+36=0$ has negative discriminant $D=6^2-4\cdot 36=36-144=-108,$ then it has two complex solutions

$x_{1,2}=\dfrac{-6\pm 6\sqrt{3}i}{2}=-3\pm3\sqrt{3}i.$

3 0

3 years ago

The midpoint of AB is M(7,-5). If the coordinates of A are (6,-7), what are the coordinates of B?

Virty [35]

Answer:

_____________________

a(6,-7) m(7,-5) letb(p,q)

Now,

Let a(6,-7) be x1 ,y1

Let b(p,q) be x2,y2

x,y = (7,-5)

Using Mid point Formula,

x = x1+x2 y= y1+y2

_____ , _____

2 2

7 = 6+p -5 = -7+q

___ , ____

2 2

or, 7×2=6+p , -5×2= -7+q

or, 14=6+p , -10= -7+q

or, p=14-6 , q= -7+10

p=8 , q= 3

Step-by-step explanation:

So , The coordinate of B(8,3)

Thank you

4 0

2 years ago

Can someone help me solve these problems?

kicyunya [14]

The answer is in the image and this question is from exponents

3 0

3 years ago