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4 years ago

HELP ME PLZ !! First one who answer these right gets brainliest !

Mathematics

2 answers:

Oksi-84 [34.3K]4 years ago

6 0

Answer:

3. z = 0

I could only find the answer for number 3. I'm sorry! I hope this helps anyway!

Phantasy [73]4 years ago

5 0

Answer:

It might be very wrong

3. 6z + 12 = 30z + 12

0 = 24z

z = 0

4. 3x +3 +1 +2x = 4x +4+ x

4 +5x = 5x +4

0 = 0

5. - 2b = - 2b +4+3-3

0 = 4

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Find MO if MN = 9x and NO = 2(x+7)

Greeley [361]

Answer:

11x + 14

Step-by-step explanation:

3 0

3 years ago

Let alpha and beta be conjugate complex numbers such that frac{\alpha}{\beta^2} is a real number and alpha - \beta| = 2 \sqrt{3}

miskamm [114]

Answer:

$-3+i\sqrt{3} , 1+\sqrt{3}$

Step-by-step explanation:

Given that alpha and beta be conjugate complex numbers

such that frac{\alpha}{\beta^2} is a real number and alpha - \beta| = 2 \sqrt{3}.

Let

$\alpha = x+iy\\\beta = x-iy$

since they are conjugates

$\alpha-\beta = x+iy-(x-iy)\\= 2iy= 2i\sqrt{3} \\y =\sqrt{3}$

$\frac{\alpha}{\beta^2} }\\=\frac{x+i\sqrt{3} }{(x-i\sqrt{3})^2} \\=\frac{x+i\sqrt{3}}{x^2-3-2i\sqrt{3}} \\=\frac{x+i\sqrt{3}((x^2-3+2i\sqrt{3}) }{(x^2-3-2i\sqrt{3)}(x^2-3-2i\sqrt{3})}$

Imaginary part of the above =0

i.e. $\sqrt{3} (x^2-3)+2x\sqrt{3} =0\\x^2+2x-3=0\\(x+3)(x-1) =0\\x=-3,1$

So the value of alpha = $-3+i\sqrt{3} , 1+\sqrt{3}$

3 0

3 years ago

a theater has two screens and shows its movies continuously. a 30 minute documentary is shown on one. a 120 minute film is shown

BigorU [14]

Answer:
120 minutes

Explanation:
The film starts at noon (12pm) and takes 120 minutes or 2 hours meaning it will stop and replay at 2:00pm. The documentary is 30 minuets meaning it will finish and replay again at 12:30, 1:00, 1:30 then at 2:00.

3 0

3 years ago

Last year Austin, Texas received 23.5 inches pf rainfall. This year Austin received 21.2 inches of rainfall. Find the percent of

Anna71 [15]

Percent decrease=decrease/original times 100
decrease=23.5-21.2=2.3
original=23.5

percent decrease=2.3/23.5 times 100=0.0978 times 100=9.8%

B is answer

7 0

4 years ago

Read 2 more answers

A triangle of sides 15 cm 14 cm 13 cm prove

yarga [219]

Answer:

84 sq.m.

Step-by-step explanation:

Given : Sides of triangle are 13 cm,14 cm and 15 CM

To Find :find the area of the triangle

Solution:

We will use heron's formula :

Where

a = 13

b = 14

c = 15

Hence the area of the triangle is 84 sq.m.

Tip: use Heron's formula

6 0

3 years ago