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
Oxana [17]
3 years ago
12

In a certain candy store, 3 pounds of candy and 2 pounds of mints cost $10.80, and 1 pound of candy and 3 pounds of mints cost $

5.35. What is the cost per pound of the mints?
A.mints are 65¢ per lb
B.mints are 75¢ per lb
C.mints are 85¢ per lb
Mathematics
2 answers:
lesya692 [45]3 years ago
7 0
3 * C + 2 * M = 10.8

1 * C + 3 * M = 5.35

C = 3.1 $

M = 0.75 $ p

so B
Tasya [4]3 years ago
3 0
3c + 2 m = 10.80
1c + 3m = 5.35

Rewrite the second equation as: c = 5.35 - 3m
Now plug this new equation into the first equation in place of the c.

3(5.35 - 3m) + 2m = 10.80
16.05 - 9m + 2m = 10.80
Combine like terms
16.05 - 7m = 10.80
Subtract 16.05 from both sides
-7m = 10.80-16.05
-7m = -5.25
Divide both sides by -7
m = 5.25
m - .75
Letter B 75 cents per pound
You might be interested in
Write the slip-intercept form of the equation of the line described
kompoz [17]

Answer:

1) y=⅚x -2⅓

2) y=8/3x -5

Step-by-step explanation:

<u>Point-slope form:</u>

y=mx+c, where m is the gradient and c is the y-intercept.

Parallel lines have the same gradient.

Gradient of given line= \frac{5}{6}

Thus, m=⅚

Susbt. m=⅚ into the equation,

y= ⅚x +c

Since the line passes through the point (4, 1), (4, 1) must satisfy the equation. Thus, substitute (4, 1) into the equation to find c.

When x=4, y=1,

1= ⅚(4) +c

1 =  \frac{20}{6}  + c \\ c = 1 -  \frac{20}{6}  \\ c = 1 - 3 \frac{1}{3}  \\ c =  - 2 \frac{1}{3}

Thus the equation of the line is y =  \frac{5}{6} x - 2 \frac{1}{3}.

The gradients of perpendicular lines= -1.

Gradient of given line= -⅜

-⅜(gradient of line)= -1

gradient of line

= -1 ÷ (-⅜)

= -1 ×(-8/3)

= \frac{8}{3}

y =  \frac{8}{3} x + c

When x=3, y=3,

3 =  \frac{8}{3} (3) + c \\ 3 = 8 + c \\ c = 3 - 8 \\ c =  - 5

Thus the equation of the line is y =  \frac{8}{3} x - 5.

4 0
3 years ago
PLS HELP ME ASAP FOR 12 and 13!!! (SHOW WORK FOR BOTH!!!) + LOTS KF POINTS!!
pychu [463]

12.
Distribute the negative
2x - 5 - 9y + 8 + 16y
Simplify
2x + 7y + 3

13.
Square is 4 sides, all sides are equal
4 ( 4x + 3)
16x + 12

Please mark Brainliest if it helped.


8 0
3 years ago
What is the factor expression of 27 + 33
Nat2105 [25]
20+7 + 30+3 is that what you meAN
3 0
3 years ago
Read 2 more answers
What's the proper name of the quadrilateral below
Alecsey [184]
That quadrilateral is a parallelogram. Parallelograms have 4 sides and the opposites side are parallel to each other.
6 0
4 years ago
Read 2 more answers
In the figure to the right, ABCD is a rectangle. Find the area of △ABC, if the area of △AOD is 10.
ehidna [41]
Assuming BOD and AOC are straight lines.

Area of the rectangle = 4 x ΔAOD
Area of the rectangle = 4 x 10
Area of the rectangle = 40 unit²

Area of ΔABC = 1/2 x 40 
Area of ΔABC = 20 unit²
5 0
3 years ago
Other questions:
  • A scatterplot consists of (1, 4.0), (2, 3.3), (3, 3.8), (4, 2.6), and (5, 2.7). The line of best fit used to model the data is y
    12·2 answers
  • Suppose you just received a shipment of ninenine televisions. twotwo of the televisions are defective. if two televisions are ra
    8·1 answer
  • What is m∠CAD?
    15·2 answers
  • Solve each equation (Isolating first)
    9·2 answers
  • The points (15, 10), (25, 20), (30, 22), (40, 32), (55, 53), (60, 55) represent the time, x, it takes 6 people to travel y miles
    14·2 answers
  • Roses produced asexually from cuttings are genetically identical to the parent. Roses grown from sexually produced seeds may loo
    11·2 answers
  • 5x + 2 – 2 = -18 – 2 5x = -20 true or false
    14·2 answers
  • Plisss help me on my assesment
    9·1 answer
  • Question 15: Given l∥m, find the value of x.
    7·1 answer
  • Domain of (x-5)(x+5)
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!