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
ale4655 [162]
3 years ago
9

Write and solve a system of equations that represents each situation. Interpret the solution. 

Mathematics
2 answers:
asambeis [7]3 years ago
7 0
Let $5 bills be denoted by x and $10 bills be denoted by y.

x + y = 12 \\
y = 5x  \\ \\ x + (5x) = 12 \\ \\ 6x = 12 \\ \\ => x = 2 \\ \\ y = 5x \\ \\ or, y = 5(2) \\ \\ => y = 10

Thus, there are 2 5$ bills and 10 10$ bills.
ValentinkaMS [17]3 years ago
6 0
X - $5 bills
y - $10 bills

x + y = 12
y = 5x

x + (5x) = 12
6x = 12
x = 2

y = 5(2)
y = 10

10 $10 bills and 2 $5 bills
You might be interested in
Mr. Fishie bought a tank for $15 and 10 fish which cost $f each. If he gave the cashier two 20-dollar bills, what was his change
Gnesinka [82]

Answer:

$25 - $10f

Step-by-step explanation:

Fishie's name is fishy.  

We know Mr. Fishie spent $15 on a tank.  His 10 fish cost 10*$f.  His total is:

Total =15 + 10*f

His change after 2 $20 would be:

$40 - ($15 - $10f), or

$25 - $10f

3 0
2 years ago
Ayanna is 3 years older than Brittany. The sum of 3 times Brittany's age and 2 times Ayanna's age is 76. How old are Ayanna and
Alex_Xolod [135]
Ayanna is 17 and Brittany is 14.

To find this, let's write two equations using the given information.

a = b + 3
3b + 2a = 76

Now, just substitute the first equation into the second and solve.

3b + 2(b + 3) = 76
3b + 2b + 6 = 76
5b = 70
b = 14

If Brittany is 14, then Ayanna is 3 years older at 17.
7 0
3 years ago
Find the area of the shaded region.<br> help pls
umka2103 [35]

Answer:

1. 50 m

2. 80 cm

Step-by-step explanation:

1. There are 2 triangles, subtract the area of 1 of them from the other.

The triangle that needs to be subtracted: b = 20 m, h = 10 m

A = 1/2b * h = 1/2(20) * 10 = 10*10 = 100 m

The big triangle, the one that needs to be subtracted plus the one you need to find the area of: b = 20 cm, h = 15 cm, 1/2(20) * 15 = 10 * 15 = 150

150 - 100 = 50 c

2. Divide it into 3 parts:

1- 3*4 = 12

2. 7*(4 + 4) = 7*8 = 56

3. [(4 + 4) * (13 - 7 - 3)]/2 = (8*3)/2 = 24/2 = 12

12 + 56 + 12 = 80 cm

7 0
3 years ago
Plssplsplsplspls answer fast bc its a map and I can't wait for way too long
AURORKA [14]

Answer:

Part A: 1

Part B: -4

Step-by-step explanation:

In a coordinate (x,y), the x-coordinate represents the input of a function and the y-coordinate represents the output.

Part A:

We're looking for the point the line passes through with an x-coordinate (input) of -3. This point is (-3,1) and therefore the output is 1 when the input is -3.

Part B:

We're looking for the point the line passes through with a y-coordinate (output) of 2. This point is (-4,2) and therefore an input of -4 yields an output of 2.

7 0
3 years ago
Read 2 more answers
Please HELP MEEEE!!
vladimir1956 [14]

Answer:

oh go on quizlet and look

Step-by-step explanation i saw it there

7 0
2 years ago
Other questions:
  • 1,-4,-9,-14,-19 what’s the 5th term
    8·2 answers
  • Yasmine is serving ice cream with the birthday cake at her party. She has purchased 19 1/2 pints of ice cream. She will serve 3/
    6·1 answer
  • PLEASE HURRY my question is in the picture​
    8·2 answers
  • 1. 10 is the geometric mean between 2 and ?..​
    11·1 answer
  • How do you do partial quotient in division
    7·1 answer
  • The average cost of driving a medium sedan in 2012 was 0.62 per mile. How much would it have cost to drive such a car 11,000 mil
    14·1 answer
  • Here is a Fill in the Gaps Question:
    9·2 answers
  • The distance from Jason’s house to school is 0.5 kilometer. What is this distance in meters?
    9·1 answer
  • The table represents the linear function f(x), and the equation represents the linear function g(x).
    12·2 answers
  • Which proportion is correct?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!