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Alenkasestr [34]
3 years ago
9

Multiply and simplify the following complex numbers: (4+4i)(−2−5i)

Mathematics
1 answer:
DaniilM [7]3 years ago
3 0

Answer: -8+8i - 20i + 20i

Simplify

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Find the equation f(x) = a(x - h)2 + k for a parabola containing point (3, 6) and having (1, -2) as a vertex. What is the standa
nlexa [21]

f(x) = 2 x^{2} -4x

Step-by-step explanation:

Step 1 :

Given, f(x) = a(x - h)2 + k

Point on the parabola is (3, 6)

Vertex (h,k) = (1,-2)

Step 2:

Substituting the vertex in the equation we have,

f(x) = a(x-1)2 -2

Substituting the point (3,6) in this we have,

6 = a(3-1)2 - 2 => 6 = 4a -2

=>  4a = 8 => a = 2

Step 3 :

Substituting the value for a and the vertex in the given equation we have

f(x) = 2(x-1)2 -2 = 2(x2 - 2x + 1) -2 = 2x2 - 4x

=> f(x) = 2 x^{2} -4x  which is the standard form

8 0
3 years ago
How too solve for x 5x+8
lions [1.4K]
I don't think you can solve for x unless they give you what that equation equals (for example 5x+8=7)

I'm pretty sure that is as simplified as it can be
3 0
4 years ago
Read 2 more answers
1,920 in expanded form<br> with operation symbols
gavmur [86]

Answer:

Expanded Notation Form:

 1,000  

+ 900  

+ 20  

+ 0  

Expanded Factors Form:

 1 × 1,000  

+ 9 × 100  

+ 2 × 10  

+ 0 × 1  

Expanded Exponential Form:

1 × 103

+ 9 × 102

+ 2 × 101

+ 0 × 100

Step-by-step explanation:

Hope this helps :D

4 0
3 years ago
Help ASAP will mark brainliest
kari74 [83]
The answer is 1/23 that’s right
8 0
3 years ago
Read 2 more answers
Randy walks 1/2 mile in each 1/5 hour. How far will Randy walk in one hour
katrin [286]
In the given problem, it is already given that Randy can walk for a distance of 1/2 a mile in 1/5 of an hour. Now let us first convert 1/5 hour to minutes. this will make the problem a bit easy.
1/5 hour = 1/5 * 60 minutes
               = 12 minutes
So
Randy in 12 minutes can walk for a distance of = 1/2 mile
Then
In 60 minutes Randy can walk for a distance of = [1/(2*12)] * 60
                                                                             = (1/24) * 60
                                                                              = 2.5
So Randy can walk 2.5 miles in 1 hour.
7 0
3 years ago
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