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3 years ago

Please help in maths all answers.....2i/3-6i

Mathematics

2 answers:

pishuonlain [190]3 years ago

5 0

Answer: 45 degrees I think

Step-by-step explanation:

Crank3 years ago

3 0

2i / 3-6i

Multiply the top and bottom by the conjugate of 3-6i.

The conjugate is 3+6i

2i(3+6i). Foil = 6i + 12i^2. Or 6i -12 because i^2= -1

(3-6i)(3+6i). Foil. = 9- 36i^2

6i-12 / 9+36
6i-12 / 45
Divide each term by 3

Answer: 2i -4 / 15

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Solve 7 pleaseeeeeeeeeeeeeeeee

yanalaym [24]

Answer:

5040

Step-by-step explanation:

I assume you really mean 7!

you understand what "!" means ?

n! = n×(n-1)×(n-2)×(n-3)×...×3×2×1

so,

7! = 7×6×5×4×3×2×1

now all you need is a calculator.

7! = 5040

6 0

3 years ago

A triangle has an area of 78 square inches. Its base is measured to be 13 inches. What is the height of this triangle in inches?

Fynjy0 [20]

Answer:

$\boxed{ \bold{ \huge{ \boxed{ \sf{12 \: inches}}}}}$

Step-by-step explanation:

Given,

Area of a triangle = 78 square inches

Base of a triangle = 13 inches

Height of a triangle = ?

Finding the height of a triangle

$\boxed{ \sf{area \: of \: a \: triangle = \frac{1}{2} \times \: base \: \times \: height}}$

$\dashrightarrow{ \sf{78 = \frac{1}{2} \times 13 \times h}}$

$\dashrightarrow{ \sf{78 = 6.5 \: h \: }}$

$\dashrightarrow{ \sf{6.5 \: h = 78}}$

$\dashrightarrow{ \sf{ \frac{6.5h}{6.5} = \frac{78}{6.5}}}$

$\dashrightarrow{ \sf{h = 12 \: inches}}$

Hope I helped!

Best regards! :D

4 0

3 years ago

I need help with 3,4,5 Please!!

gladu [14]

3. g(x) = x^2 - 5x + 3
g(-3) = -3^2 - 5(-3) + 3
g(-3) = 9 + 15 + 3
g(-3) = 27 <==

4. 4(7b + 15f - 8f) =
4(7b + 7f) =
28b + 28f <===

5. C = 2.50r + 15
for 5 rolls...r = 5
C = 2.50(5) + 15
C = 12.50 + 15
C = 27.50...its A

3 0

3 years ago

What are the three products of celullar respiration

Viktor [21]

Answer:

Cellular respiration is this process in which oxygen and glucose are used to create ATP, carbon dioxide, and water. ATP, carbon dioxide, and water are all products of this process because they are what is created.

Step-by-step explanation:

8 0

3 years ago

Simplify by distributing 7(36 – 2c + 4)

Nostrana [21]

Step-by-step explanation:

7(36-2c+4)

=252 - 14c + 28

=310 - 14c

7 0

3 years ago