1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Sergeu [11.5K]
3 years ago
14

Find a ⋅ b. a = 6i - 6j, b = 4i + 2j

Mathematics
1 answer:
Serhud [2]3 years ago
7 0
24i - 12j= 12
just think of i and j as labels to let you know what number corresponds with whata*b = 12

You might be interested in
You manage an ice cream factory that makes two flavors: Creamy Vanilla and Continental Mocha. Into each quart of Creamy Vanilla
Mars2501 [29]

Answer:

You should make 250 quarts of Creamy Vanilla and 200 of Continental Mocha to use up all the eggs and cream.

Step-by-step explanation:

This problem can be solved by a first order equation

I am going to call x the number of quarts of Creamy Vanilla and y the number of quarts of Continental Mocha.

The problem states that each quart of Creamy Vanilla uses 2 eggs and each quart of Continental Mocha uses 1 egg. There are 700 eggs in stock, so:

2x + y = 700.

The problem also states that each quart of Creamy Vanilla uses 3 cups of cream and that each quart of Continental Mocha uses 3 cups of cream. There are 1350 cups of cream in stock, so:

3x + 3y = 1350

Now we have to solve the following system of equations

1) 2x + y = 700

2) 3x + 3y = 1350

I am going to write y as function of x in 1) and replace it in 2)

y = 700 - 2x

3x + 3(700 - 2x) = 1350

3x + 2100 - 6x = 1350

-3x = -750 *(-1)

3x = 750

x = 250

You should make 250 quarts of Creamy Vanilla

Now, replace it in 1)

y = 700 - 2x

y = 700 - 2(250)

y = 700 - 500

y = 200.

You should make 200 quarts of Continental Mocha

7 0
3 years ago
passes through A(-3, 0) and B(-6, 5). What is the equation of the line that passes through the origin and is parallel to ?
goblinko [34]

Answer:

       Equation of line , 5x + 3y = 0

Step-by-step explanation:

The slope of a line passing through points (x₁,y₁) and (x₂,y₂) is given by \frac{y_2-y_1}{x_2-x_1}

Here points are given by (-3,0) and (-6,5)

Slope=\frac{5-0}{(-6)-(-3)}=\frac{-5}{3}

The slope of parallel lines are same. So slope of required line =\frac{-5}{3}

Equation of a line with slope m passing through origin is given by

                    y =mx

               So equation of line, y=\frac{-5}{3}x\\\\3y=-5x\\\\5x+3y=0

Equation of line , 5x + 3y = 0

4 0
3 years ago
Read 2 more answers
A ________ is a whole number that divides another whole number with a remainder of 0
Brut [27]

It's a factor. This concept is widely used throughout algebra, and you'll probably bump into it through the end of high school and beyond.

A common use is expressing a term in <em>prime factorization</em>, or reducing a number to its most base parts- primes. For example:

20 = 4 * 5 = 2 * 2 * 5

Of course, a number like 13 which is already prime is made up of itself and 1. <em>Factors do not have to be primes.</em> 20 is also reducible through combinations of 1, 2, 4, 5, 10, and 20. Prime factorization is just a handy example.

Basically, factors multiply with each other to create other numbers, and numbers can be reduced down to their factors.

8 0
4 years ago
F(x)=x+3 ;find f (x+1)
nataly862011 [7]

Answer:

x+4

Step-by-step explanation:

(x+1)+3

8 0
3 years ago
Given that 1 inch = 2.54 cm, how many centimeters are there in 3 feet? Answers may be written using decimal form and should be r
Olin [163]

Answer:

There is <u>91.44 centimeters</u> in 3 feet.

Step-by-step explanation:

First, you would have to know that there are 12 inches in 1 feet. So, if you do 12 x 3, you would get 36 inches to equal 3 feet. Then, you can do 36 x 2.54 and get your answer of 91.44 centimeters.

5 0
3 years ago
Other questions:
  • Finding out how many events can someone attend with the cost of $36
    5·1 answer
  • Tori chang and kai chang sell cookies for Girl Scouts. Over the past 6 months they sold 110 boxes of cookies. Kai sold 4 times a
    5·2 answers
  • Quiana took out a loan to pay for a new car. Initially, she owed the lender $15,234.68. She has repaid $247.43 of the loan each
    10·2 answers
  • The figure shows two triangles on the coordinate grid: A coordinate grid is shown from positive 6 to negative 6 on the x-axis an
    10·1 answer
  • A chord of a circular clock is 48 inches long, and its midpoint is 7 inches from the center of the circle. What is the radius of
    13·1 answer
  • Please answer this question correctly. Need help ASAP.!
    15·1 answer
  • Please help !!! I’m confused
    5·1 answer
  • Find the probability that a senate is a male or a Democrats
    13·1 answer
  • Use the figure to find the measures of the numbered angles,
    7·1 answer
  • 7.5, 6.3, 2.1 what type of triangle is it?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!