Mathematics High School

plzzzz help meee.......​

Plzzzz Help Meee.......

Answers

Answer 1

Answer: [tex]-3\hat{i}-6\hat{j}+2\hat{k}[/tex]

Step-by-step explanation:

Given

[tex]\vec{a}=2\hat{i}+4\hat{j}-5\hat{k}\\\vec{b}=\hat{i}+\hat{j}+\hat{k}[/tex]

[tex]\vec{c}=\hat{j}+2\hat{k}[/tex]

The addition of the three is [tex]\vec{a}+\vec{b}+\vec{c}[/tex]

[tex]\vec{a}+\vec{b}+\vec{c}=(2\hat{i}+4\hat{j}-5\hat{k})+(\hat{i}+\hat{j}+\hat{k})+(\hat{j}+2\hat{k})[/tex]

[tex]\vec{a}+\vec{b}+\vec{c}=3\hat{i}+6\hat{j}-2\hat{k}[/tex]

vector opposite to the vector  [tex]\vec{a}+\vec{b}+\vec{c}\ \ \text{is}\ -(\vec{a}+\vec{b}+\vec{c})[/tex]

[tex]\therefore -(\vec{a}+\vec{b}+\vec{c})=-3\hat{i}-6\hat{j}+2\hat{k}[/tex]

Related Questions

Solve the system of equations

2x+3y= 6
x+y=4

(6,-2)
(-2,6)
(-3, 4)
(0, 2)

Answers

Answer:

Step-by-step explanation:

2x+3y= 6     ========================>>>           2x +  3y = 6

x+y=4    =====   times both sides by 2  =====>>>    2x + 2y = 8

             ==== subtract these two equations ==>>  (2x - 2x) + (3y - 2y) = 6 - 8

                                                                                       0x     +      y       =   -2

        y = -2     so if  x + y = 4             plug in -2 where y was

                             x + (-2) = 4              add 2 to both sides

                                    x   =  6

(6,-2)

(-2,6)

(-3, 4)

(0, 2)

The total cost of a sweater and a pair of pants was $89.47. If the price of the sweater was $8.53 less than the pair of pants, what was the price of the sweater? Express your answer as a simplified fraction or a decimal rounded to two places.

Answers

Answer:

Let S = price of sweater

Let P = price of pants

S + P = 89.47 because that was the total spent

S = P - 8.53   because the sweater is 8.53 less than pants

Substitute P-8.53 in place of S in the

1st equation and solve for P

P - 8.53 + P = 89.47

2P - 8.53 = 89.47     add 8.53 to both sides

2P = 89.47 + 8.53

2P = 98.00  divide both sides by 2

P = 98.00/2

P = $49.00

S = P - 8.53

S = 49.00-8.53

S = $40.47

A sweater costs $40.47 and the pants cost $49.00

4x - 7y = -40
3x - 2y = -4

Answers

Heres your answer: x=4,y=8

8 because it makes the most sense for the particular question

Please help me! Anything is appreciated!

Answers

Answer:

it wont let me download the pdf :/

Dvide if the polynomial does not divide evenly. Include the remainder as a fraction (18u^2 - 142u - 11) ÷ (u - 8)​

Answers

Answer:

18u + 2 + 5/(u - 8)

Step-by-step explanation:

(18u^2 - 142u - 11) ÷ (u - 8)​

18u^2 - 142u - 11 = 18u^2 - 8*18u + 2u - 11 = 18u(u - 8) + 2u - 16 + 5 =18u(u - 8) + 2(u - 8) + 5 =(18u + 2)(u - 8) + 5

(18u^2 - 142u - 11) ÷ (u - 8)​  = 18u + 2 + 5/(u - 8)

Answer:

18u + 2 + 5/u - 8.

Step-by-step explanation:

(18u^2 - 142u - 11) ÷ (u - 8)

= 18u + 2 + 5/u - 8.


Write the first 6 terms of the sequence.

an= -n2+6

Please show work

Answers

For the term number which is “n” you substitute for example to find the first term you would do

(-1)(2)+6= 4

For term two replace “n” with 2

(-2)(2)+6= 2

Then you would continue for the rest of the terms

Answer:

Step-by-step explanation:

[tex]a_{n}=-n^2+6\\a_{1}=-1^2+6=5\\a_{2}=-2^2+6=2\\a_{3}=-3^2+6=-3\\a_{4}=-4^2+6=-10\\a_{5}=-5^2+6=-25+6=-19\\a_{6}=-6^2+6=-36+6=-30[/tex]

PLEASE HELP I HAVE 30 MINUTES UNTIL CLASS ENDS PLEASE HELP

Answers

Answer:

12 stamps

Step-by-step explanation:

6 divided by 0.50 = 12

Answer: it’s 12

Step-by-step explanation: all I did was multiplied 6 by .50

Hope this helps!

what number is 6% of 850?

Answers

Answer:

51 is 6% of 850

Step-by-step explanation:

0.06*850

Name the marked angle in 2 different ways.

Answers

Answer:

acute is one of the i hope this helps

A baker needs 40 fluid ounces of milk for a chocolate cake recipe and 64 fluid ounces of milk for a carrot cake recipe. How many cups of milk does the baker need for the carrot cake and the chocolate cake recipes combined?

Answers

Answer:

104 ounces

Step-by-step explanation:

40+64= 104

.......

the baker needs 13 cups of milk

Josiah had 128 toy cars. If he organizes them into groups of 7 , how many cars will be in the final group?

Answers

Answer:

2

Step-by-step explanation:

128divided by 7 = 126

hwlp me i need help PLZZZZZZZZZZZZZZZZ

Answers

The answer is 16 hope this helps

My bad

the answer is 16

I'm going to refrain from answering area problems from now on. Deepest Apologies

6 is 4% of what
number?

Answers

Answer:

150

Step-by-step explanation:

since 4 percent would have to be multiplied by 25 to get 100 you have to multiply 6 by 25. This comes out to 150. You can even check this by doing 150 times 0.04 which is 6 so we are correct!

Seth is using a large shoe box to store his baseball cards. The length and the width of the box are each 12 inches, and the height is 6 inches. Which of the following equations could be used to find the volume of Seth's shoe box?

Answers

Answer:

Step-by-step explanation:

Hi

Answer: v = (6)(12)

Step-by-step explanation:

Please help quarter ends tomorrow and I don’t know what to do I’m failing all my classes

Answers

Answer:

I believe the answer is y=x+-13

Step-by-step explanation:

what is the mean, median, mode and range of 7, 2, 1, 4, 1

Answers

The mean is the total of all the values, divided by the number of values. To find the mean, we add up all the results and then divide them by the total number of values which is 5:

1 + 1 + 2 + 4 + 7 = 15

15 / 5 = 3.

The median is the middle number in a list of numbers ordered from smallest to largest, so the median is 2.

1, 1, (2), 4, 7

The mode is the value that appears most often in a set of data. In this case, the mode is 1.

1: 2
2: 1
4: 1
7: 1

The range is the difference between the highest value and the lowest value, so the range here is 6.

Highest value: 7
Lowest value: 1

7 - 1 = 6

hey!!! please answer this asap it is an emergency!!!

whoever answers first and gets it right will be marked brainliest!!!

Answers

Answer:

my bad yall, I seen the comments!! it's 12

Step-by-step explanation:

I'm so sorry!!

Answer:

Okay, i'm not being jugy but it it is super easy... it is 12 only because 1x12=12, 2x12=24, 3x12=36, and 4x12=48!!

it is most definately 12 DON'T WORRY

In the following diagram, m AC=97º and m CD= 112°. Find the measure of angle
x.

Answers

Answer:

In the diagram, assume that segments are tangents if they appear to be. Find the ... Find the length of an arc with measure 62° in a circle with radius 2 m. 21. I hope this helps u  

Step-by-step explanation:

Pls help me find the area in this pic!

Answers

105 squared meters is the answer.

Round 188,206 to the nearest thousand

Answers

189,000 I think because the 8 is above 5 if the number was below 5 it would be 188,000

Did Sammy eat more blueberries on Monday or on
Monday or on Tuesday? Explain
your reasoning.

Answers

Answer: Sammy says he was hungry on Monday so that's why he ate more blueberries than Tuesday

Step-by-step explanation:

A dog shelter has 22 poodles. The number of poodles is doubling every year. How long before the shelter has 22,528 poodles?

Please help

Answers

Answer:

I think 1024 days? Which is around 2 years...

Can someone help me find this

Answers

Answer:

it should be 90 degrees

Step-by-step explanation:

...........................

Solve for x
help pls

Answers

Answer:

this is the answer!

Step-by-step explanation:

Please help me!
----------------------------

Answers

Answer:

It should be D because you start off with the X coordinate then y

if the angle of elevation from the point on the ground to the top of the tree is 34° and the point is 25 feet from the base of the tree what is the height of the tree? The answer is 16.9 but I need help with part 2 “if the tree grows an additional 10 feet, what is the new angle of the elevation from the point 25 feet from a he base of the tree to the top of the tree? A) 42.3° B) 47.1° C) 49.8° D) 54.6°

Answers

Answer:

It’s c I did it on USA test prep

Step-by-step explanation:

Please help me on maths

Answers

Answer:

x = 25

Step-by-step explanation:

x + 25 + 2x - 10 + 90 = 180

3x + 105 = 180

3x = 75

x = 25

Which value is equivalent to (36)3?
A.
32
B.
33
C.O 39
318

Answers

Answer:

108

Step-by-step explanation:

36(3)=108

The correct answer is not on the answer choice.

Whichever answer is the closest to 108, choose it.

HELP!!! NEED HELP!!!!

Answers

Answer:

C

Step-by-step explanation:

Please help!! I'll give brainliest and the rest!!

Answers

Answer:

C. 4c < 60

Step-by-step explanation:

Isabell + 3 sisters

good luck, i hope it helps :)

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