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Kaylis [27]
3 years ago
5

Compute (3+4i) +(7 − 20i).

Mathematics
1 answer:
Sveta_85 [38]3 years ago
8 0

Answer:

10 -16 i

Step-by-step explanation:

given,

(3+ 4 i) + (7 − 20 i)

for the given complex number

if the number is added of subtracted the real part will add or subtract to the real part and imaginary will add or subtract to the imaginary part.

now

                = (3+ 4 i) + (7 − 20 i)                                  

               = (3 + 7) + (4+(-20)) i                      

                = 10 + (-16) i                      

                = 10 -16 i                              

so, the given answer will be 10 -16 i

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kherson [118]

\sf{\qquad\qquad\huge\underline{{\sf Answer}}}

Here we go ~

  • take value of pi = 3

  • r = radius = 5 cm

  • h = height = 9 cm

Let's calculate volume of Cylinder ~

\qquad \sf  \dashrightarrow \:v =  \pi {r}^{2} h

\qquad \sf  \dashrightarrow \:v = 3 \times  {5}^{2}  \times 9

\qquad \sf  \dashrightarrow \:v =  3\times25 \times 9

\qquad \sf  \dashrightarrow \:v = 75 \times 9

\qquad \sf  \dashrightarrow \:v =67 5 \:  \: cm {}^{3}

That's all, ask me if you have any queries ~

7 0
2 years ago
p is a polynomial of degree 5. p has roots of multiplicity 2 at t=4 and t=0, a root of multiplicity 1 at t=-4, and p(1)=2025. Fi
DENIUS [597]
P(x) = (x^2)(x - 4)^2(x + 4) + some constant(b)
2025 = (1^2)(1 - 4)^2(1 + 4) + b
2025 = 45 + b
b = 1980

Complete Equation:

p(x) = (x^2)(x - 4)^2(x +4) + 1980

or expanded form

p(x) = x^5 - 4x^4 - 16x^3 + 64x^2 + 1980
5 0
3 years ago
Ms.Perkins needs to order art supplies for the entire school.She would like to get at least 8,000 piece construction paper has 4
Neko [114]

Answer:

17 packs

Step-by-step explanation:

If each pack of construction paper has 495 pieces

Mrs Perkins would like to get at least 8000 pieces of construction paper

Number of Packs She will need

= Total Pieces Needed/Number of Pieces per pack

=8000/495

=16\frac{16}{99}

Now, 16 X 495 =7920 and this is less than the required numbers.

Therefore, She will need at least 17 packs in order to have a minimum of 8000 pieces pf construction paper

3 0
3 years ago
Write 0.511 as a percent
Kazeer [188]

51.1 % is the answer.

3 0
3 years ago
Read 2 more answers
WILL MARK BRAINLIEST ^^<br><br> picture included!! PLEASE and thx
Elenna [48]
<h3>Answer: C) 3 units up and 4 units left</h3>

Explanation:

Like with the previous problems, the answer comes fairly straight forward from the values of c and d.

c = 4 tells us we have a shift of 4 units to the left

d = 3 indicates we're shifting 3 units up.

Note: we shift left instead of right because x+c = x+4 means the xy axis has been shifted 4 units to the right, giving the illusion the cosine curve is shifted 4 units to the left.

3 0
3 years ago
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