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

Help I’m super confused and help would be appreciated!

Answers

Answer: 50 degrees

Step-by-step explanation: the total degree is 90 90-40=50

PLS I NEED HELP WITH THIS!!!!

Answers

Answer:

Step-by-step explanation:

The volume of a cylinder is

[tex]V=h\pi r^2\\ \\ h=8,\ r=4\\ \\ V=8\pi (4^2)\\ \\ V=8(16)\pi \\ \\ V=128\pi \units^3[/tex]

A candelabra holds 5 identical cylindrical candles, each with a diameter of 6 centimeters and a height of 9 centimeters. How many cubic centimeters of wax are in all the candles on the candelabra combined?

Answers

Answer: [tex]1272.51\ cm^3[/tex]

Step-by-step explanation:

Given

diameter of each candle is [tex]d=6\ cm[/tex]

The height of each candle is  [tex]h=9\ cm[/tex]

The volume of a cylinder is [tex]V=\pi r^2h[/tex]

The volume of each candle is

[tex]\Rightarrow V=\pi \times 3^2\times 9\\\Rightarrow V=254.502\ cm^3[/tex]

For 5 candles it is

[tex]\Rightarrow 5V=1272.51\ cm^3[/tex]

Total wax used for 5 candles is [tex]1272.51\ cm^3[/tex]

sorry this isn’t in text form… But thank you if you’re willing to provide help!

Answers

Answer:

Blank 1: y=3x+10

Blank 2: y= 40

Step-by-step explanation:

Let the cost of gift wrap be y and the number of gifts be x.

Department

An upfront fee of $10 means that Mr Bentley needs to pay $10 first, and this $10 is only paid once on top of the cost of wrapping each gift.

y= 3x +10

Niece

A flat fee of $40 means that no matter how many gifts the niece wraps, Mr Bentley only pays $40.

y= 40

To find out when the two plans cost the same, equate the two equations together. Then, solve for x.

3x +10= 40

3x= 40 -10 (-10 on both sides)

3x= 30

x= 30 ÷3

x= 10

Thus when Mr Bentley has 10 gifts to be wrapped, the 2 plans costs the same.

The Sugar Sweet Company will choose from two companies to transport its sugar to market. The first company charges $6500 to rent trucks plus an additional fee of $150.50 for each ton of sugar. The second company charges $5696 to rent trucks plus an additional fee of $200.75 for each ton of sugar.

Answers

Answer:

The second company is a better deal

Step-by-step explanation:

PLEASE HELP ME :)))Micheal is making scale drawings of rectangular rooms using a scale of 1in to 1 1/2 feet

Answers

Answer:

a) 256 ft^2 No

b) 150 ft^2 Yes

c) 300 ft^2 NO

d) 192 ft^2 Yes

w=8.5 in

l=11 in

A=w•l

A=8.5•11=93.5 in^2

Scale:

1in:1.5 ft

1in^2:2.25 ft^2

1in ^2. 2.25ft^2

93.5 in^2. Xft^2

X=2.25•93.5

X=210.375

Step-by-step explanation:

The required answers are below the scale drawings for each of these rooms:

a. 16 feet by 16 feet: No

b. 10 feet by 15 feet: es

c. 15 feet by 20 feet: NO

d. 12 feet by 16 feet: Yes

What is a scale image?

Scale image is defined as a ratio that represents the relationship between the shape and size of a figure and the corresponding dimensions of the actual figure or object.

a. 16 feet by 16 feet:

The width of the room on the scale drawing will be 16/1.5 = 10.67 inches, and the length will also be 10.67 inches. Since both dimensions are greater than the width and length of the paper, the scale drawing will not fit on one piece of paper.

Answer: No.

b. 10 feet by 15 feet:

The width of the room on the scale drawing will be 10/1.5 = 6.67 inches, and the length will be 15/1.5 = 10 inches. The length dimension of the scale drawing fits on the paper, Therefore, the scale drawing will fit on one piece of paper.

Answer: Yes.

c. 15 feet by 20 feet:

The width of the room on the scale drawing will be 15/1.5 = 10 inches, and the length will be 20/1.5 = 13.33 inches. Both dimensions are greater than the width and length of the paper, so the scale drawing will not fit on one piece of paper.

Answer: Not.

d. 12 feet by 16 feet:

The width of the room on the scale drawing will be 12/1.5 = 8 inches, and the length will be 16/1.5 = 10.67 inches. Both dimensions are less than the width and length of the paper, so the scale drawing will fit on one piece of paper.

Answer: Yes.

Learn more about the Scale images here:

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Jessica is building a patio in the shape of a trapezoid. The basses will be 6 inches and 8 inches. The height of the patio will be 3 inches Chelsea needs to know the area of the patio to buy the neccessary supplies. Find the area of the trapezoid patio

Answers

Answer:

21 in²

Step-by-step explanation:

Following the formula, you set it up as [tex]\frac{3(6+8)}{2}[/tex]

Add 6 and 8

[tex]\frac{3(14)}{2}[/tex]

Multiply 3 and 14

[tex]\frac{42}{2}[/tex]

Divide 42 by 2

21 in² = area of trapezoid patio

my question is what is x-4<6 i dont know inequalities

Answers

Answer:

x=6+4

x<10

(-∞,10)

Step-by-step explanation:

Inequalities are the greater than, greater than or equal to, less than, or less than or equal to—between two numbers or algebraic expressions.

Calculate the area of the composite figure, which is
not drawn to scale.

Answers

488cm² is your answer

Step-by-step explanation:

the area of the composite figure=area of rectangle +area of triangle

=l×b+1/2 b×h=17×22+1/2×{22-10}×19 =488cm²

what is 20-10x10-50 I am typing this bc i have to reach 20 characters lol

Answers

Answer:

-130

Step-by-step explanation:

Answer: 30

Step-by-step explanation:

Order of operations, multiplication first, then subtraction and addition

No troll answers, I actually need help. Thanks mates

Answers

Answer:

28/1

Step-by-step explanation:

Answer:

7sqrt2

Step-by-step explanation:

28/4=7

we have a 45-45-90 triangle so d=7sqrt2

I NEED HELP ASAP WILL GIVE BRAINLIST PLEASEE HELP

List the simple shapes into which you divided shape C, and measure their sides. Write all the measurements in inches.

Answers

Step-by-step explanation:

Perimeter is a measurement of the distance around a shape and area gives us an idea ... Understanding how much space you have and learning how to fit shapes ... If the shape is a polygon, then you can add up all the lengths of the sides to find the perimeter. ... You can write “in2” for square inches and “ft2” for square feet.

HELP ME PLZZZZZ ITS DUE IN 10 MIN HELP PLZZZZ

Answers

Perimeter is 100 feet

Area is 600 feet

PLZ HELP RN ILL MARK YOU BRAINLIST IF ITS RIGHT PLZZZ IM DESPERATE

Answers

Answer:

-5

Step-by-step explanation:

Divide -10 by 2 and you'll come away with -5

Answer: -5
Explanation: -10=2y, you divide both sides by 2 so -10/2=-5, and it’ll give you the answer for y=-5
Hope this is right!!

What is measure of the missing angle? HELP

Answers

Answer:

x = 31

So 2x-7 = 55

x + 4 = 35

Step-by-step explanation:

[tex]2x-7+x+4=90\\3x-3=90\\3x=93\\x=31[/tex]

Answer this question to get marked as brainliest plus 20 points!!!!!

Answers

Answer:

A. 91°

Step-by-step explanation:

∠A ≅ ∠B as vertical angles∠B + 47° + 42° = 180° (straight angle)∠B = 180° - 89° = 91°∠A = ∠B = 91°

Find f(-5) if f(n) = n^3 + 3n^2

Answers

Plug in -5 for n
-5^3 + 3(-5)^2
-125 + 3(25) = -125 + 75 = -50
f(-5) = -50

−0.2+
10
7

=minus, 0, point, 2, plus, start fraction, 7, divided by, 10, end fraction, equals

Answers

Answer:

Step-by-step explanation:

Please help NO LINKS!!!! They are two different questions and i really need help!!!!!

Answers

Answer:

1: c

2: 114

Step-by-step explanation:

Answer:

Part 1 is C

Part 2 is B

Step-by-step explanation:

Part 1: First convert 35% into a decimal (.35)

Then convert it into a fraction ([tex]\frac{7}{20}[/tex])

Now convert 10% into a fraction (.10)

Convert into a fraction ([tex]\frac{1}{10}[/tex] or [tex]\frac{2}{20}[/tex])

Part 2: Convert 15% into a decimal (.15)

Multiply .15 by 760 (114)

114 students chose tea as a drink

A group of 5 friends went to the movies. A bag of popcorn costs $2.99. How much will it take cost to get one bag of popcorn for each friend

Answers

Answer:

this one is so simple add $2.99 5 times

Step-by-step explanation:

Answer:

14.95

Step-by-step explanation:

I guess you are assuming that one person is getting the popcorn for all 5 people including themselves. It's not worded the best way I've ever seen but that is the assumption I will make

So you multiply 5 * 2.99 = 14.95

Only for interest's sake, you could solve the question by multiplying by 5 * 3 dollars

5 * 3 = 15 dollars

You take off 5 cents because the actual cost is 2.99 and that is 1 cent below 3 dollars.

15.00 - 05 = 14.95  or a nickel less than 15 dollars.

what is the difference between 7 million and 7 ten thousand

Answers

There are multiple answers to this question. One is that there are an additional two zeros on 7,000,000 than 70,000. In addition, 7,000,000 is 100 times greater than 70,000

Simply the following
-2+3(1-4)-2​

Answers

Answer:

- 13

Step-by-step explanation:

Given

- 2 + 3(1 - 4) - 2 ← evaluate parenthesis

= - 2 + 3(- 3) - 2 ← perform multiplication

= - 2 - 9 - 2

= - 13

Step-by-step explanation:

solution

= -2+3(3)-2

=-2+3*3-2

= -2+9-2

=-11-2

= -9

What is the volume of the rectangular prism?
3 cm
8 cm
2 cm

Answers

Answer:

54 centimeters

Step-by-step explanation:

The sum of two consecutive numbers is 35. What is the smallest number?

Answers

answer i got is 17, 18

what is the exact volume of a cylinder with a radius of 7 inches and a height of 20 inches

Answers

Answer:

V = 3078.76 in³

Step-by-step explanation:

To find the volume of a cylinder, use this formula:

V = πr²h

V = volumer = radiush = height

Plug in the values you know.

V = π(7)²(20)

First let's evaluate the exponent.

7² = 49

V = π(49)(20)

Now let's multiply.

49 • π = 153.938

153.938 • 20 ≈ 3078.76

V = 3078.76 in³

This is your answer.

Hope this helps!

What is the temperature, in degrees Fahrenheit, shown on the thermometer to the nearest integer

Answers

Answer:

-5..........................

What is the circumference of the following circle?
IN
T1

Answers

Answer:

the circumstance of the circle is 6.2857

Write an equation of the line in slope-intercept form.

Answers

Answer: y = -0.5x + 1

The Martinez Family has driven 240 miles so far. Their total trip is 300 miles. What percentage of the trip have they already driven

Answers

Answer:

90%

Step-by-step explanation:

Answer:

80%

Step-by-step explanation:

Un comerciante compra 16 máquinas de coser a S/.408 cada una: 27 equipos de sonido a S/. 732 cada uno y 19 lavadoras a S/. 652 cada una. ¿Cuánto pagó por todo?

Answers

Answer:

Costo Total= $38,680

Step-by-step explanation:

Dada la siguiente información:

Un comerciante compra 16 máquinas de coser a S/.408 cada una: 27 equipos de sonido a S/. 732 cada uno y 19 lavadoras a S/. 652 cada una.

Para calcular el costo total, debemos usar la siguiente formula:

Costo Total= costo unitario * cantidad adquirida

Costo Total= 408*16 + 732*27 + 652*19

Costo Total= $38,680

The total amount of everything including sewing machines, sound systems, and washing machine is $38,680.

What is the cost price?

The cost price refers to the original price of the items, it is the total amount of money that costs a manufacturer to provide a given product.

The unit cost of sewing machines = 408

The unit cost of a sound system = 732

The unit cost of a washing machine = 652

Total cost = 408 × 16 + 732 × 27 + 652 × 19

                = 6528 + 19764 + 12388

                = $38,680

Therefore, the total amount of everything including sewing machines, sound systems, and washing machine is $38,680.

Learn more about cost price;

https://brainly.com/question/11027396

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