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2 years ago

I need help with this one to please

Mathematics

2 answers:

kozerog [31]2 years ago

7 0

Answer:

1. 11

2. 20

3. 6

4. 18

Step-by-step explanation:

1. a+8, a=3

So, 3+8 = 11

2. 10(c-5), c=7

First we solve (7-5)=2

Then we got 10(2) = 20

3. Given n is 18 so we substitute 18 in the equation

$\frac{18 + 6}{4}$

First, 18+6 = 24

Next, 24÷4 = 6

$\frac{4(8) + 22}{3}$

Solve 4(8) first we got 32.

Then 32+22 = 54

Next, 54÷3 = 18

Hope this helps you! Please vote!

Degger [83]2 years ago

4 0

Step-by-step explanation:

<h2>Hope my answer helps you hehe (/^▽^)/</h2>

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TRIGONOMETRY - Given the complex numbers <img src="https://tex.z-dn.net/?f=z_%7B1%7D%20%3D20%20cis%20226" id="TexFormula1" title

Norma-Jean [14]

This is easily done after writing both complex numbers in exponential form:

$z_1=20\,\mathrm{cis}226^\circ=20e^{226^\circ i}$

$z_2=5\,\mathrm{cis}76^\circ=5e^{76^\circ i}$

Then

$\dfrac{z_1}{z_2}=\dfrac{20e^{226^\circ i}}{5e^{76^\circ i}}=4e^{(226-76)^\circ i}=4e^{150^\circ i}$

In trigonometric form, this is

$\dfrac{z_1}{z_2}=4\,\mathrm{cis}150^\circ=4(\cos150^\circ+i\sin150^\circ)=\boxed{-\dfrac{\sqrt3}2+\dfrac i2}$

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3 years ago

Terrance has 12 of the 15 collector's edition books in a series. Keymar has 4/5 of the series. Who has more books?

klasskru [66]

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3 years ago

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Solve For X: 8.47 = 5.5 + X

Bumek [7]

Answer:

x=2.97

Step-by-step explanation:

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3 years ago

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Ryan and Marie had some marbles. if Ryan lost `15 marbles, he would have 4 times as many marbles as Marie. If Ryan lost 75 marbl

vaieri [72.5K]

Ryan's marbles = x
Marie has 4 times less marbles then Ryan would have if he lost 15 marbles (it means he would have x-15)
So, Marie marbles = (x-15):4
If Ryan lost 75 marbles (it means he would have x-75), he would have 1 1/2 times as many marbles as Marie.

We got an equation: $x-75=1\frac{1}2\cdot\frac{x-15}{4}$

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3 years ago

What is the parent equation for exponential growth and decay?

Archy [21]

Answer:

A = P x r^t

Step-by-step explanation:

A = Amount (e.g. number of organisms in population after certain period of time)

P = Principal/ Initial Value (e.g. the starting population)

r = rate as a decimal (e.g. if a population increases over certain period of time by 20%, r would equal 1.2)

t = time in whichever units you need.

Example of problem using formula:

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3 years ago

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