12. Find u · v for u = 3i + 4j and v = i - 2j

a.
[tex] \sqrt{5} [/tex]

b. -5
c. 10
d. 3i - 8j​

Answers

Answer 1
ANSWER: -3-2ji-8j^2

EXPLAINATION:

I dont know why that isn’t one of the answers but that’s what I got. You could try D.

MARK ME BRAINLIEST PLEASE

Related Questions

Julio spent $21 on a magazine and five notepads. If the magazine cost $6, then how much was each notepad?

Answers

Answer:

3

Step-by-step explanation:

Answer is $3 ! 21-6=15 15/5=3

I need help it's easy but not for me

Answers

Answer:

1. C. h = 2s + 75

2. J. c = 65m + 25

3. C. y = -3/5x + 3

4. F. T = 129c - 75

5. A. y = -0.5x -1

Evaluate (8 x 10-3) +0.45 – (7 X 10-2). Write your answer in
scientific notation.

Answers

Answer: 80 x  −  60.55

can someone please help me with this question?

Answers

Answer:

402.12

Step-by-step explanation:

V=πr2h= π·42·8≈402.12386

Answer:

864 feet

Step-by-step explanation:

Plug numbers in

Plz help its due by 1

Answers

11.5

Step-by-step explanation:

Please help me!!!!!!

Answers

Answer:

C is 25

Step-by-step explanation:

Because 25+38=63 and 63/7 is equal to 9.

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

The value of c in the expression (c + 38) / 7 = 9 is 25.

What is an expression?

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example:

2 + 3x + 4y = 7 is an expression.

(3x + 2)/ 3 is an expression.

2x + x + 4x is an expression.

We have,

(c + 38) / 7 = 9______(1)

We will solve for c.

From (1).

(c + 38) / 7 = 9
Multiply 7 on both sides.

7 x (c + 38) / 7 = 7 x  9

c + 38 = 63

Subtract 38 on both sides.

c + 38 - 38 = 63 - 38

c = 25

Thus,

The value of c in the expression (c + 38) / 7 = 9 is 25.

Learn more about expressions here:

https://brainly.com/question/3118662

#SPJ2

HELPPP ASAP!!!

How many cubes are in this set?

Answers

Answer:

7

Step-by-step explanation:

7 because it's not asking for squares it asking for cubes

Kim will paint all the faces of the outside of the storage trunk when it is closed. How many square feet will Kim paint?

Answers

Answer:

Step-by-step explanation:

B i don’t know

Answer:

A

Step-by-step explanation:

When born, a baby weighed 8.5 pounds and gained 1.6 pounds per week for the first 10
weeks. Which of the following functions accurately models the number of pounds, p, the
baby weighs as function of the number of weeks, w, since it was born?

Answers

Answer:

I believe the answer is C

Step-by-step explanation:

if the baby weighted 8.5 pounds when born then that is the initial value therefore the baby will be weighted 1.6 times 10 weeks or w

hope this helps

Find the volume of the given figure.

Answers

Answer:

5/18

Step-by-step explanation:

Volume= length•width•height

5/6•1/2= 5/12

5/12•2/3= 10/36= 5/18

15!!!! POINTSS what is the mode in the data shown below

Answers

Answer is 20, hope this helps BRAINLIEST?
Here is the other answer so that you can give the person above me brainest

Need help with this question real quick
2b + 7g - 5b - 8g
Need all the steps as well

Answers

Answer:

Step-by-step explanation:

-5b+2b-8g+7g

-3b-1g

I’m not so sure.

Sue knitted a scarf for her friend June that was also 4 feet long. After a month, the length of June's scarf could be represented by the expression 3/3 x 4. How did the length of June's scarf change? Explain.

Answers

Answer:

There was no change in the length of June's scarf, that is, the length of it remained the same.

Step-by-step explanation:

Since Sue knitted a scarf for her friend June that was also 4 feet long and, after a month, the length of June's scarf could be represented by the expression 3/3 x 4, to determine how did the length of June's scarf change you must perform the following calculation:

Month 1 = 4

Month 2 = 3/3 x 4 = 1 x 4 = 4

Therefore, as can be seen, there was no change in the length of June's scarf, that is, the length of it remained the same.

The selling price of an item is ​$520. It is marked down by ​10%, but this sale price is still marked up from the cost of ​360$. Find the markup from cost to sale price.

Answers

Answer:

30%

Step-by-step explanation:

Answer: good luck

Step-by-step explanation:

Two teams are playing in the finals for an adult softball league. Each team has 13 players and the ages of the team members are shown in the tables. Which statement is true?
A) The mean for team 1 is greater than the mean for team 2.
B) The median for team 1 is greater than the median for team 2.
C) The median for team 2 is greater than the median for team 1.
D) The value of Q1 for team 1 is greater than the value of Q1 for team 2.

Answers

Don't you hate the people with the website. The answer is c

Answer:

B

Step-by-step explanation:

if 100 ml of rat poison is mixed with 2,5l of water then what would be the simplified poison water ratio ​

Answers

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Answer: 1:25 ratio of rat poison to water

Explanation:

100:2500

10: 250

1:25

I hope this helped!

<!> Brainliest is appreciated! <!>

- Zack Slocum

*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆

Find the one of the following sets of side lenghts could represent a right triangle

Answers

Answer:

B

Step-by-step explanation:

Using the pythagorean theorem A^2 + B^2 = C^2 the only numbers that work are those in choice B. 8 short leg, 15 long leg, 17 hypotenuse.

8^2 + 15^2 = 17^2 = 64 +225=289 = 289=289 therefor proving these set of numbers are a right triangle.


What do ou Sun and
the star Vega have in
Common

Answers

Answer:

Vega has a radius of around 1.1 million mi / 1.8 million km, about 2.5 times bigger than our Sun. Vega is the first solitary main-sequence star beyond the Sun known to be an X-ray emitter. They are both stars. They both form a circle that is very bright for human eyes. Over one million Earth's could fit inside the Sun.

Step-by-step explanation:

what is it what is it what is it?!

Answers

Answer:

1.0 g element will be remaining after 19 minutes

Step-by-step explanation:

Answer:

1.0 g element will be remaining after 19 minutes

Step-by-step explanation:

Adam, Chris, and jason have 2 1/2, 3 1/3, and 1/6 pounds of fish, respectively, to bring to the fish fry. how many pounds of fish do they have combined. 

Answers

Answer:

7lbs

Step-by-step explanation:

which sentence best describes percy's rectangle ​

Answers

Umm I would say birds of a feather flock together


Help me please I need this ?!!!!!!

Answers

Answer:

16x^4 y^2

Step-by-step explanation:

How can we eliminate the fraction?
y = - - 2

Answers

Answer:

multiply each term on both sides by 4

Step-by-step explanation:

What 1+1 help i'll give 15 points

Answers

Answer:

11

Step-by-step explanation:

am so smart

BRAINLIEST TO CORRECT ANSWER!!

Answers

Answer:

Step-by-step explanation:

how do i solve this?

Answers

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Answer: x = 110

Explanation:

We can see that both the sides are equal because of the lines on the sides of the triangle. That means that the angle on the other side is also 35, we also know that the total amount of degrees in a triangle is 180

So now we can do this equation:

35 + 35 + x = 180

70 + x = 180

x = 110

I hope this helped!

<!> Brainliest is appreciated! <!>

- Zack Slocum

*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆

Step-by-step explanation:

[tex]180 - (35 \times 2) = \\ = 180 - 70 = \\ = 110[/tex]

The sum of internal angles of a triangle is 180 and we have a triangle with 2 lengths that are the same. We can say that also the other angle is 35,so the result is 110


Which correctly describes how the graph of the inequality 5x + 2y = 13 is shaded?

Answers

Answer:

The answer is above the solid line.

Step-by-step explanation:

x - (2x + 1) = 8 - (3x + 2)

Answers

Answer:

x=7/2

Step-by-step explanation:

Answer:

x=7/2

Step-by-step explanation:

x-(2x+1)=8-(3x+2)

x-2x-1=8-3x-2

-x-1=6-3x

+x on both sides

-1=6-2x

-6 on both sides

-7=-2x

7=2x

÷2 on both sides

7/2=x

Hope this helps =]

Take the function f(x)= square root of x+5 (then outside of square root) +1

And:
1. Reflect it along the x axis
2. translate it 4 units left
3. Translate it 3 units dow

What would be this functions NEW equation?

Answers

Reunited with 4 equals to 3

[tex]f(x) = - \sqrt{x + 5 + 4} + 1 - 3[/tex]

[tex]f(x) = - \sqrt{x + 9} - 2[/tex]

A laptop has a listed price of $801.98 before tax. If the sales tax rate is 8.5%, find the total cost of the laptop with sales tax included.
Round your answer to the nearest cent, as necessary.

Answers

Answer 870.15

Step-by-step explanation:

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