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3 years ago

10

How many centimeters are in 4.8 inches?

2 answers:

Shtirlitz [24]3 years ago

4 0

it will be about 12.192

Leya [2.2K]3 years ago

3 0

There would be 12.19 centimeters.Hope it helps :)

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Andrew is saving up money for a down payment on a car. He currently has $3355, but knows he can get a loan at a lower interest r

Rufina [12.5K]

Answer:

5.06 years or 60.75 months

Step-by-step explanation:

Compound interest formula:

$AV=PV(1+\frac{i}{n})^{n*t}\\4045=3355(1+\frac{.037}{12})^{12t}\\1.025=(1.003)^{12t}\\log1.025_{1.003}=12t\\60.75=12t\\5.062$

5.06 years or 60.75 months

3 0

3 years ago

The sum of the roots of 2x squared + 8x -3=0 is?

Helen [10]

According to Vieta's formula, if $x_1,x_2$ are solutions of quadratic equation $ax^2+bx+c=0$ , then:

$\displaystyle x_1+x_2=- \frac{b}{a}$

In our case:

$\displaystyle x_1+x_2=- \frac{8}{2} =-4$

4 0

3 years ago

What is the greatest common factor of the polynomial below?

nekit [7.7K]

Answer:

option C

Step-by-step explanation:

18x^2 - 6x

take common

6x(3x^2 - 1)

here 6x is greatest common factor of the polynomial

4 0

3 years ago

Read 2 more answers

Trisha and Byron are washing and vacuuming cars to raise money for a class trip. Trisha raised $38 washington 5 cars and vacuumi

pshichka [43]

Answer:

The amount they charged to wash a car is <u>$6</u> and vacuum a car is <u>$2</u>.

Step-by-step explanation:

Given:

Trisha and Byron are washing and vacuuming cars to raise money for a class trip.

Trisha raised $38 washington 5 cars and vacuuming 4 cars.

Byron raises $28 by washing 4 cars and vacuuming 2 cars.

Now, to find the amount they charged to wash a car and vacuum a car.

Let the amount charged for washing a car be $x.$

And the amount charged for vacuuming a car be $y.$

So, the total amount Trisha raised:

$5x+4y=38.$ .......(1)

And, the total amount Byron raised:

$4x+2y=28.$

Now, to get the amount they charged to wash a car and vacuum a car we use elimination method:

$5x+4y=38\\4x+2y=28......\times 2$

$5x+4y=38\\8x+4y=56$

$-3x=-18$

$3x=18$

<em>Dividing both sides by 3 we get:</em>

$x=6.$

<u>Amount charged to wash a car = $6.</u>

Now, putting the value of $x$ in equation (1) we get:

$5(6)+4y=38.$

$5\times 6+4y=38$

$30+4y=38.$

<em>Subtracting both sides by 30 we get:</em>

$4y=8.$

<em>Dividing both sides by 4 we get:</em>

$y=2.$

<u>Amount charged to vacuum a car = $2.</u>

Therefore, the amount they charged to wash a car is $6 and vacuum a car is $2.

5 0

3 years ago

What is the polar form of -3+ v3i?

Softa [21]

z=-3+√3i
a=-3,b=√3

So

$\\ \rm\Rrightarrow r=\sqrt{a^2+b^2}$

$\\ \rm\Rrightarrow r=\sqrt{(-3)^2+(\sqrt{3})^2}$

$\\ \rm\Rrightarrow r=\sqrt{9+3}$

$\\ \rm\Rrightarrow r=\sqrt{12}$

$\\ \rm\Rrightarrow r=2\sqrt{3}$

Find theta

$\\ \rm\Rrightarrow \theta=tan^{-1}(\dfrac{y}{x})$

$\\ \rm\Rrightarrow \theta=tan^{-1}(\dfrac{\sqrt{3}}{3})$

$\\ \rm\Rrightarrow \theta=tan^{-1}(\dfrac{-1}{\sqrt{3}})$

$\\ \rm\Rrightarrow \theta=\dfrac{5\pi}{6}$

Polar form

$\\ \rm\Rrightarrow r(cos\theta+isin\theta)$

$\\ \rm\Rrightarrow 2\sqrt{3}(cos\dfrac{5\pi}{6}+isin\dfrac{5\pi}{6})$

7 0

2 years ago