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avanturin [10]
3 years ago
13

Express the following in a a+bi form. (3 – i)(4 + 7i) – ((5 – i) – 2(1 – 3i))

Mathematics
1 answer:
prohojiy [21]3 years ago
4 0

Answer:

16+12i

Step-by-step explanation:

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I WILL GIVE BRAINLIEST AND 30 POINTS FOR THE ANSWER!!
agasfer [191]

Answer:

1170 m²

Step-by-step explanation:

Parallelogram: 40 x 18 = 720

triangle: (50 x 18) / 2 = 450

total area: 720 + 450 = 1170

5 0
3 years ago
I will give brainlest answer
KonstantinChe [14]
4 units right and 4 units down
4 0
4 years ago
Solve :1/1-x^a-b +1/1-x^b-a​
Stolb23 [73]

The answer  to the above eqaution is 1

Step-by-step explanation:

Proceeding step by step

Step 1= 1/(1-xᵃ⁻ᵇ)+ 1/(1-xᵇ⁻ᵃ)

on rearranging the equation (b-a) as -(a-b) and substituting the value

Step 2= 1/(1-x ᵃ⁻ᵇ) + 1/(1-x -⁽ᵃ⁻ᵇ⁾ )

Using the indices corrolary that 1/1- x ⁻ᵃ= -xᵃ/ (1- x ᵃ) and subsituting the value of the expression in the step mentioned below

Step 3=1/(1+x ᵃ⁻ᵇ) - (x ᵃ⁻ᵇ)/(1-x ᵃ⁻ᵇ)

Since the denominators are the same the two fractions can be added with common denominator being 1+x ᵃ⁻ᵇ

On adding the above mentioned step 3 we get

Step 4=(1- x ᵃ⁻ᵇ) / (1- x ᵃ⁻ᵇ)

          =1

Thus the value of equation =1

4 0
3 years ago
What is the solution to this -28=3+8(h-9)??
stiks02 [169]
-28 = 3 + 8(h-9)
-28 = 3 + 8h - 72    (distributive property a(b-c) = ab - ac)
-28 = -69 + 8h        (combining like terms ( 3 - 72))
 41 = 8h                  (adding 69 on both sides to isolate 8h)
 /8     /8                   (dividing coefficient (8) on both sides to isolate h)
 5.125 = h

Therefore h = 5.125
7 0
3 years ago
The sale price of ground beef at a local grocery store is $1.49 for the 1st pound and 1.09 for each additional pound which funct
bixtya [17]
Y=1.09(x-1)+1.49  where y is cost and x is in pounds we could further operate:

y=1.09x-1.09+1.49

y=1.09x+0.4 (note that the domain is x≥1)
5 0
4 years ago
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