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
kirill [66]
3 years ago
15

3 lbs for $21 at that rate how would 9 lbs cost

Mathematics
2 answers:
FrozenT [24]3 years ago
8 0
The cost for 9 lbs would be 63 dollars
earnstyle [38]3 years ago
7 0
Well we are going to use 3lbs for $21 as our rate. 
Lets set it up in a fraction. 
  
  3lbs 
--------
  $21 

So we want to know how much 9lbs would cost.. 
Well lets set that up as a fraction as well. 
  9lbs 
--------
    x 

We put x there because we dont know how much 9lbs will cost.

Now we know that in order to get 9lbs they just multipled 3lbs x 3 
And that gave us 9lbs!!!
3lbs x 3 = 9lbs 

Now when dealing with fractions we must always keep one rule in mind. 
What ever you do to the top you must do to the bottom. 
So we could multiply $21 by 3 and get our 9lbs cost!!
$21 x 3 = $63 

So this means we can finally say our answer! 
 Answer = 9lbs would cost $63 

Good Luck! :)


You might be interested in
My new laptop was $824.99 plus the 10% tax. What is the total cost of the laptop?
lina2011 [118]

Answer:

Rounding up to the nearest hundredth, 907.49

Step-by-step explanation:

10% of 824.99 is 82.499 so all you have to do is 824.99 + 82.499 which will get you 907.48900 and rounding to the nearest hundreth will get you 907.49

3 0
2 years ago
Read 2 more answers
Expand and simplify 9(2x + 3) + 4x
aleksandr82 [10.1K]

Answer:

22x+27

Step-by-step explanation:

Let's simplify step-by-step.

9(2x+3)+4x

Distribute:

=(9)(2x)+(9)(3)+4x

=18x+27+4x

Combine Like Terms:

=18x+27+4x

=(18x+4x)+(27)

=22x+27

4 0
3 years ago
Read 2 more answers
The total value of the money in her piggy bank is $7.75. If Brielle has 63 nickels, write and solve a linear equation to find th
Nataly [62]
Didhzhsuwuebxhxhudsdhdhdidee
4 0
3 years ago
How can you describe the graph of the equation ax + by = c? Explain
scoundrel [369]

Answer:

When A and B are not both zero, the graph of Ax + By = C is always a line. The graph of Ax + By = C, where A and B are not both zero, is a line. Divide both sides by B. Because the form Ax + By = C can describe any line, it is called the standard form of an equation for a line.

Hope this helps you!

6 0
2 years ago
123
ser-zykov [4K]

First, I'm going to separate factor the expression inside of the square root.

sqrt[ (2/18) * (x^5) ]

sqrt[ (1/9) * (x^5) ]

We can take the square root of 1/9 easily, because 1 and 9 are both perfect squares. The square root of 1/9 is 1/3.

Looking at the x^5, we can separate it into x^2 * x^2 * x^1. The square root of x^2 is x. So, we now also have an x^2 on the outside because there are two x^2s in our expanded form.

ANSWER: (x^2 * sqrt(x)) / 3

(Option 1)

Hope this helps!

4 0
3 years ago
Other questions:
  • Find the limit. lim θ→0 cos(8θ) − 1 / sin(3θ)
    13·1 answer
  • In simplified exponential notation, the expression x ³ · x -4 · x =
    12·1 answer
  • Find the inequality represented by the graph ​
    8·1 answer
  • Select the decimal that is equivalent to 13/75
    6·2 answers
  • The cost of 3 slices of pizza is $4.89. What is the cost of each slice of pizza? $1.63 $1.89 $2.45 $2.88
    13·2 answers
  • What is the perimeter of the triangle?
    15·2 answers
  • Solve for x. Round to the nearest tenth, if necessary.
    6·1 answer
  • 1+1-1......................help plz due in 20 secs
    15·1 answer
  • Find the next three sequence of 1,3, 9, 27,<br>​
    10·1 answer
  • 3x-1/5=x+1/3 pls help me
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!