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
Elden [556K]
2 years ago
7

At a pet store, Rhonda paid $55 for 8 dog bowls and 6 bones. Kelly paid $32.50 for 2 dog bowls and 9 bones. Determine the cost o

f one dog bowl (x) and one bone (y). Write a system of linear equations that models this situation.
Mathematics
1 answer:
Mashcka [7]2 years ago
7 0

Answer:

8d + 6b = 55

2d + 9b = 32.50

Step-by-step explanation:

let 'd' = # dog bowls

let 'b' + # bones

Rhonda:  8d + 6b = 55

Kelly:  2d + 9b = 32.50

we can multiply Kelly's equation by -4 to eliminate the 'd' terms:

Kelly: -4(2d + 9b) = 32.5(-4)

-8d - 36b = -130

now add the above equation to Rhonda's equation:

  -8d - 36b = -130

+  8d + 6b = 55

-30b = -75

b = 2.50

now we can use either equation and substitute 2.5 for 'b' to find 'd'

2d + 9(2.5) = 32.5

2d + 22.5 = 32.5

2d = 10

d = 5

You might be interested in
Estimate and classify the critical points for the graph of each function.
Neko [114]

Answer: B

(0.5, 7), maximum; (2, 1), point of inflection; (3.5, –5), minimum

Critical points of a function are those points at which a line drawn tangent to the curve is horizontal or vertical. On the graph, maximum and minimum points look like peaks and valleys, respectively. Points of inflection that are critical points are places where the curve flattens out and changes from being bent upward to being bent downward or vice versa.

Just passed the test

6 0
3 years ago
Find the term to term rules for 2,6,18,54,162
faltersainse [42]

Answer:

a, ax3 =b, bx3= c , cx3=d, dx3=e

Step-by-step explanation:

2, 2×3=6, 6x3=18,18 x3 =54, 54x3= 162

Multiplication of three with previous number will give you next number in series.

4 0
2 years ago
Needs help with algebra ​
Maslowich

Answer:

4 {a}^{2}  + 5b = 9b - 7c

=> 4 {a}^{2}  + 7c = 9b - 5b

=>  \frac{4 {a}^{2} + 7c }{4}  = b

option C

6 0
3 years ago
WILL MARK YOU BRAINLIEST
Irina-Kira [14]

Answer:

it is upside down type it in the coments

Step-by-step explanation:

5 0
3 years ago
PLS HELP SUSPER EASY PLS ILL GIVE BRAINLIEST
Andrej [43]

it's d !!!!!!!!!!!!!!!!!!!!!!!!!!

5 0
3 years ago
Read 2 more answers
Other questions:
  • The radius of a cylindrical construction pipe is 2ft . if the pipe is 23ft long, what is its volume? use the value 3.14 for π ,
    13·1 answer
  • Can you help me with my homework i dont get division ;(
    10·1 answer
  • What equals 88 in multiplication
    15·2 answers
  • What is (fog)(x)?<br> f(x) = x?<br> g(x) = 3x + 3
    8·2 answers
  • I need help understanding no. 1 part c)
    12·1 answer
  • Given the replacement set {0. 1. 2. 3. 4). solve 4x - 5 = 11.<br> 0 X=0<br> 0 X = 3<br> 0 X = 4
    15·1 answer
  • If 64^-5 = 2^x, what is the value of x?
    12·1 answer
  • Determine if the function is proportional. Explain your reasoning.
    5·1 answer
  • 1 Middle School Mathematics 5 points stio49304Asked 03.20.2020 Charlotte runs a farm stand that sells bananas and raspberries. E
    9·1 answer
  • FIND THE AREA OF THE SHADED REGION.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!