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2 years ago

HELP ME PLZ

Mathematics

1 answer:

joja [24]2 years ago

7 0

Ok I think it’s 26 if I’m wrong sorry

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Easy question pls anwser

defon

Answer:

A, C, D

Step-by-step explanation:

Since 15 is a positive integer, it can be represented in positive situations.

15 students add classes to schedule. = 15

15 points are taken away. = -15

15 point are given. = 15

15 dollars has been added to your salary = 15

15 dollars have been taken from your salary = -15

6 0

2 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

2 years ago

Read 2 more answers

ASAP plz

Ivenika [448]

Answer:

$23.85

Step-by-step explanation:

39.95 x 3 which can also be 39.95 + 39.95 + 39.95=119.85

So then do 143.70-119.85 to find the answer which is 23.85.

8 0

2 years ago

Read 2 more answers

What is the solution set for the inequality 4 - 5g > 39?

katrin [286]

The solution set for the given inequality is $g > -7$

<u>Given the following inequality:</u>

$4 - 5g > 39$

<h3>What is an inequality?</h3>

An inequality can be defined as a mathematical relation that is typically used to compare two (2) integers or variables in an equation by illustrating any of the following:

Greater than (>).

Less than (<).

Greater than or equal to the other (≥).

Less than or equal to the other (≤).

Simplifying the inequality, we have:

$4 - 5g > 39\\\\5g > 4-39\\\\5g > -35\\\\g > -7$

Read more on inequality here: brainly.com/question/24372553

6 0

1 year ago

Could you please solve that?

nordsb [41]

Answer:

i think my brain just died what math are you doing

Step-by-step explanation:

3 0

2 years ago