All categories

3 years ago

I need help quick please

Mathematics

1 answer:

Sati [7]3 years ago

3 0

Answer:

search it up its there

Step-by-step explanation:

You might be interested in

Which is a solution to the equation?<br> (x-2)(x + 5) = 18

pishuonlain [190]

Hello!

Answer:

$\boxed{x=4, x=-7}\checkmark$

Step-by-step explanation:

First, expand.

$x^2+3x-10=18$

Then, subtract by 18 both sides.

$x^2+3x-10-18=18-18$

Simplify and solve.

$x^2+3x-28=0$

Therefore, the solution to this equation is x=4, and x=-7.

x=4 and x=-7 is the correct answer.

Hope this helps you!

Have a nice day! :)

Thank you!

4 0

3 years ago

Read 2 more answers

If Vector u=(5,-7) and v=(-11,3), 2v-6u=_____ and ||2v-6u||≈_____

Sauron [17]

<h2>Answer:</h2>

$2\vec{v}-6\vec{u}=(-52,48) \\ \\ ||2\vec{v}-6\vec{u}||=75.28}$

<h2>Step-by-step explanation:</h2>

In this problem we have two vectors:

$\vec{u}=(5,-7) \ and \ \vec{v}=(-11,3)$

So we need to find two things:

$2\vec{v}-6\vec{u}$

and:

$||2\vec{v}-6\vec{u}||$

FIRST:

In this case we have the multiplication of vectors by scalars. A scalar is a simple number, so:

$2\vec{v}-6\vec{u} \\ \\ Replace \ \vec{v} \ and \ \vec{u} \ by \ the \ given \ vectors: \\ \\ 2(-11,3)-6(5,-7) \\ \\ Multiply \ each \ component \ by \ the \ corresponding \ scalar:\\ \\ (2\times (-11),2\times 3)+(-6\times 5,-6\times (-7)) \\ \\ (-22,6)+(-30,42) \\ \\ Sum \ of \ vectors: \\ \\ (-22-30,6+42) \\ \\ \therefore \boxed{(-52,48)}$

SECOND:

If we name:

$\vec{w}=2\vec{v}-6\vec{u}$

Then, $||2\vec{v}-6\vec{u}||$ is the magnitude of the vector $\vec{w}$ . Therefore:

$||\vec{w}||=||2\vec{v}-6\vec{u}|| \\ \\ ||\vec{w}||=||(-52,48)|| \\ \\ ||\vec{w}||=\sqrt{(-58)^2+48^2} \\ \\ ||\vec{w}||=\sqrt{3364+2304} \\ \\ ||\vec{w}||=\sqrt{5668} \\ \\ \boxed{||\vec{w}||=75.28}$

5 0

3 years ago

Read 2 more answers

The university needs to transport 421 fans from the stadium parking lot to the football game. If a van holds 10 people, how many

Tasya [4]

421/10= 42.1 vans since you can’t bring a 0.1 van you’ll have to bring a whole extra van so 43 vans

answer: one person will be in the partially full van

7 0

3 years ago

Suppose that Njoman rolls a fair six-sided die and a fair four-sided die S uivant

ale4655 [162]

Answer:

1/6 ,1/6, 1/24, no events A and B are not independent events.

Step-by-step explanation:

6 0

3 years ago

Maurice earns a commission of 6,048 from the sale of a Lexus, priced at $50,400. What is Maurice's commission rate?

Nutka1998 [239]

Answer:

commission rate of Maurice is 12%

Step-by-step explanation:

Maurice earns commission = $6,048

Lexus priced at = $50,400

Maurice's commission rate =

= $\frac {commision}{rate} \times 100$

= $\frac{6048}{50400} \times 100$

=12 %

hence the commission rate of Maurice is 12%

8 0

3 years ago