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
taurus [48]
3 years ago
13

You buy 3 bags of sand and 2 bags of pea gravel for $21. In a second purchase (at the same prices), you buy 2 bags of sand for $

10. Let represent the price (in dollars) per bag of sand and let y represent the price (in dollars) per bag of pea gravel. Use a graph to find the price per bag of sand and the price per bag of pea gravel. What is thE bag of sand cost and bad of pea gravel cost.
Mathematics
1 answer:
Artist 52 [7]3 years ago
4 0

Answer:

Bag of sand cost = $5/-

Bag of pea gravel cost = $3/-

Step-by-step explanation:

Given that,

3 bags of sand and 2 bags of pea gravel cost $21

2 bags of sand cost $10.

Suppose number of bags of sand is represented by x.

Number of bags of pea gravels is represented by y.

We can write as:

3x + 2y = 21

2x = 10

x = 5

eq 1 : 15+ 2y = 21

y= 3

Therefore,

Bag of sand cost = $5/-

Bag of pea gravel cost = $3/-



You might be interested in
What is the area of the figure 7 will mark brainiest
Masteriza [31]
The area is 27 inches
4 0
3 years ago
At the end of the year a car is worth 5% less than what it was worth at the beginning of the year. If a car was worth $9 500 in
Pepsi [2]
The answer should be 9025
3 0
3 years ago
Read 2 more answers
The prism below is made of cubes which measure of a centimeter on one side. What is the volume?
denpristay [2]
Volume = 45
Bc
3 rows wide
5 rows long
3 rows tall
5x3=15
15x3=45
6 0
2 years ago
How do you find the height of a triangle?
Dmitrij [34]
Answers:  height, "h", of a triangle:    <span> h = 2A /  (b₁ + b₂) .
___________________________________________________ </span>
Explanation:
__________________________________________________
The area of a triangle, "A", is equal to (1/2) * (b₁ + b₂) * h ; 
                                    or:  A = (1/2) * (b₁ + b₂) * h
                                    or: write as:  A =  [(b₁ + b₂) * h] / 2 ;
          ___________________________________________
                                     in which:  A = area of the triangle; 
                                                       b₁ = length of one of the bases
                                                                 of the triangle ("base 1");
                                                       b₂ = length of the other base
                                                                 of the triangle ("base 2");
                                                       h = height of the triangle;
____________________________________________________
To find the height of the triangle, we rearrange the formula to solve for "h" (height); assuming that all the units are the same (e.g. feet, centimeters); if no "units" are given, then the assumption is that the units are all the same.
We can use the term "units" if desired, in such cases; in which the area, "A" is measured in "square units"; or "units²",
_________________________________
So, given our formula for the "Area, "A"; of a triangle:
_________________________________________________
 A =  [(b₁ + b₂) * h] / 2 ; we solve for "h" in terms of the other values; by isolating "h" (height) on one side of the equation.
     If we knew the other values; we plug in the those other values.
______________________________________________
  Given:   A =  [(b₁ + b₂) * h] / 2 ;

Multiply EACH side of the equation by "2" ;
_________________________________________
            2*A = {  [(b₁ + b₂) * h] / 2 } * 2 ;
_________________________________________
to get:
_________________________________________
           2A = (b₁ + b₂) * h ;
_____________________________________________________
           Now, divide EACH side of the equation by:  "(b₁ + b₂)" ;  to isolate "h"
on one side of the equation; and solve for "h" (height) in terms of the other values;
_____________________________________
            2A /  (b₁ + b₂) = [ (b₁ + b₂) * h ] / (b₁ + b₂);
______________________________________
to get:
_______________________________________________
           2A /  (b₁ + b₂)  =  h ;  ↔<span>  h = 2A /  (b₁ + b₂)  .
__________________________________________________</span>
7 0
3 years ago
1 and -1 is nonlinear or linear
OLga [1]

Answer:

liner

Step-by-step explanation:

they look like a line on a graph

4 0
2 years ago
Other questions:
  • Can someone do theses problems please.Giving first person with explanations and answers brainlest :).
    15·2 answers
  • a coin is tossed 4 times which of the following represents the probability of the coin landing on heads all 4 times
    7·1 answer
  • Find the exponential regression equation that best fits the data
    10·1 answer
  • Abby ran 3 times as many laps as Karen. Adding 4 th the number of laps Abby ran and then dividing by 7 gives the number of laps
    10·2 answers
  • Find the median for the data set. 9, 14, 11, 8, 3, 15*<br> Your answer
    14·2 answers
  • At the grocery store last week, small boxes of facial tissue were on sale at 4 boxes for $5. This week they mark a new price at
    10·1 answer
  • Hey guys I really need help on this one!
    12·1 answer
  • X = 1/4 y = 2/3 z = 4 1/5
    10·1 answer
  • Is there a dilation the Maps shape lll onto shape ll if so what is the scale factor and is it in enlargement or reduction?
    7·1 answer
  • A sweet shop sells 150g of sweets for £1.32 Work out the cost of buying 475g of sweets​
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!