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
marta [7]
3 years ago
13

DO THIS PLEASE! STEP BY STEP

Mathematics
1 answer:
Papessa [141]3 years ago
5 0

Answer:

a=5, s=3

Step-by-step explanation:

a=adult s=student

then write 2 equations to represent the amount of people and money

a+s=8

7.25a+5.5s=52.75

• To solve a pair of equations using substitution, first solve one of the equations for one of the variables. Then substitute the result for that variable in the other equation.

{a+s=8, 7.25a+5.5s=52.75}

• Choose one of the equations and solve it for a by isolating a on the left hand side of the equal sign.

a+s=8

• Subtract s from both sides of the equation.

a=−s+8

• Substitute −s+8 for a in the other equation, 7.25a+5.5s=52.75.

7.25(−s+8)+5.5s=52.75

• Multiply 7.25 times −s+8.

−7.25s+58+5.5s=52.75

• Add −29s/4  to 11s/2.

−1.75s+58=52.75

• Subtract 58 from both sides of the equation.

−1.75s=−5.25

• Divide both sides of the equation by −1.75, which is the same as multiplying both sides by the reciprocal of the fraction.

s=3

• Substitute 3 for s in a=−s+8. Because the resulting equation contains only one variable, you can solve for a directly.

a=−3+8

• Add 8 to −3.

a=5  

You might be interested in
Find the value of x with all work, parallel lines and transversal lines
musickatia [10]

Answer: no idea

Step-by-step explanation:

3 0
3 years ago
The actual distance between two villages is 120 kilometers. On a map of the area, 0.5 centimeter represents 2 kilometers.
saveliy_v [14]

Answer:

30 centimeters

Step-by-step explanation:

I hope this helps

3 0
3 years ago
Read 2 more answers
33 inches is 9.6% of what number of inches
andreyandreev [35.5K]

Answer:

316.8

Step-by-step explanation:

Multiply 33 by 9.6.

4 0
3 years ago
WILL GIVE BRAINEST <br>you invest 300$ in an account....
Lapatulllka [165]
It will be B. <span>(300 * 0.075 * 10) + 300 = 225 + 300 = $525</span>
5 0
3 years ago
Read 2 more answers
What is the total length of the tadpoles that are 1/8-inch and 1/4-inch long?
nasty-shy [4]

The dot plot shows the frequency or length of the tadpoles

The total length of the tadpoles that are 1/8-inch and 1/4-inch long is 7/8 inches

<h3>How to determine the total length?</h3>

From the dot plot, we have the following parameters:

  • 3 tadpoles have a length of 1/8
  • 2 tadpoles have a length of 1/4

So, the total length is:

Total = 3 * 1/8 + 2 * 1/4

Evaluate the product

Total = 3/8 + 1/2

Rewrite as;

Total = 3/8 + 4/8

Evaluate the sum

Total = 7/8

Hence, the total length of the tadpoles that are 1/8-inch and 1/4-inch long is 7/8 inches

Read more about dotplots at:

brainly.com/question/24309209

4 0
2 years ago
Other questions:
  • What is the average rate of change between:
    8·1 answer
  • Someone please help me I’ll give you Brainliest
    7·1 answer
  • The minute hand of a clock is six (6) inches long. a. How far does the tip of the minute hand move in 24 hours? Write your answe
    9·1 answer
  • Use forward or backward substitute to conjecture a closed formula which describes the nth term of the sequence an = an-1 – n, wh
    5·1 answer
  • Help with this problem
    13·1 answer
  • Suppose we take a sample of 18 men and 17 women to estimate the difference in average height between men and women. The men had
    6·1 answer
  • Sum of q and 10 is 20
    9·2 answers
  • ⚠️Help Please It’s Due Today!! ⚠️
    11·1 answer
  • Find x if the base angles of an isosceles triangle are 47 degrees and 3x+14
    14·1 answer
  • Determine the sum of the first 1000 Natural numbers
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!