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
Goryan [66]
3 years ago
5

A team t-shirt costs $3 per adult and $2 per child. On a certain day, the total number of adults (a) and children (c) who bought

shirts was 100, and the total money collected was $275. Which of the following options represents the number of children and the number of adults who purchased team shirts that day, and the pair of equations that can be solved to find the numbers? 75 children and 25 adults Equation 1: a + c = 100 Equation 2: 3a − 2c = 275 75 children and 25 adults Equation 1: a + c = 100 Equation 2: 3a + 2c = 275 25 children and 75 adults Equation 1: a + c = 100 Equation 2: 3a − 2c = 275 25 children and 75 adults Equation 1: a + c = 100 Equation 2: 3a + 2c = 275
Mathematics
2 answers:
jolli1 [7]3 years ago
7 0
3a + 2c = 275  .... t-shirt costs $3 per adult and $2 per child and <span>total money collected was $275
</span>
a + c = 100 ... the total number of adults (a) and children (c) who bought shirts was 100

so

3a + 2c = 275
a + c = 100 so a = 100 - c

substitute a =   100 - c into 3a + 2c = 275

3a + 2c = 275
3(100 - c) + 2c = 275
300 - 3c + 2c = 275
-c = - 25
c = 25
a = 100 -c = 100 - 25 = 75

so a = 75 (adults) and c = 25 (children)

answer

<span>Equation 1: a + c = 100
Equation 2: 3a + 2c = 275
25 children and 75 adults</span>
ANTONII [103]3 years ago
3 0
I did this problem before so if im correct, this is the solution

 a = 75 (adults) and c = 25 (children)
<span>Equation 1: a + c = 100 
Equation 2: 3a + 2c = 275 




</span>
You might be interested in
A researcher selects two samples of equal size and computes a mean difference of 1.0 between the two sample means. If the pooled
s344n2d4d5 [400]

Answer:

The Cohen's D is given by this formula:

D = \frac{\bar X_A -\bar X_B}{s_p}

Where s_p represent the deviation pooled and we know from the problem that:

s^2_p = 4 represent the pooled variance

So then the pooled deviation would be:

s_p = \sqrt{4}= 2

And the difference of the two samples is \bar X_a -\bar X_b = 1, and replacing we got:

D = \frac{1}{2}= 0.5

And since the value for D obtained is 0.5 we can consider this as a medium effect.  

Step-by-step explanation:

Previous concepts

Cohen’s D is a an statistical measure in order to analyze effect size for a given condition compared to other. For example can be used if we can check if one method A has a better effect than another method B in a specific situation.

Solution to the problem

The Cohen's D is given by this formula:

D = \frac{\bar X_A -\bar X_B}{s_p}

Where s_p represent the deviation pooled and we know from the problem that:

s^2_p = 4 represent the pooled variance

So then the pooled deviation would be:

s_p = \sqrt{4}= 2

And the difference of the two samples is \bar X_a -\bar X_b = 1, and replacing we got:

D = \frac{1}{2}= 0.5

And since the value for D obtained is 0.5 we can consider this as a medium effect.  

7 0
3 years ago
Solve for X<br><br> PLEASE HELP ME
guapka [62]

Answer:

x = 10°

Step-by-step explanation:

Step 1:

92° + x° + 78° = 180°             Supplementary Angles

Step 2:

x° + 170° = 180°         Combine Like Terms

Step 3:

x° = 180° - 170°       Subtract 170° on both sides

Answer:

x = 10°

Hope This Helps :)

4 0
2 years ago
Help please. this is really hard for me to understand.
bogdanovich [222]

Answer:

1. x = - 4, - 3

2. x = 9, - 1

3. x = - 1, 10

4. x = - 8, - 3

8 0
3 years ago
Which of the following fractions will not have a repeating decimal?
hoa [83]

4/5, because to simplify a decimal, you can divide the numerator by the denominator. 4 divided by 5 is 0.8

4 0
3 years ago
Read 2 more answers
**Solve each problem below. Be sure to write an equation, solve the problem, and answer
zhuklara [117]

Answer:

hyee

Step-by-step explanation:

hope this helps :)

5 0
3 years ago
Other questions:
  • Factor the expression: 9x + 123y
    15·1 answer
  • Find the value of x<br><br> 3(x-4)
    15·1 answer
  • For the problem 9+2(3) do you get the final answer if you had first as you do if you multiply first​
    10·2 answers
  • The ratio of girls to boys in the geography bee was 5 to 4. There were 36 total students. How many were boys?
    14·1 answer
  • Can get I help on 15-20 please or on someof them
    12·1 answer
  • Simplify if possible
    6·2 answers
  • If the following figure is a rectangle, find wz. ​
    9·2 answers
  • An individual is at a restaurant with two other people and they are trying to determine the tip for their check total which came
    6·1 answer
  • A car dealership tracks the highway fuel efficiency of the preowned cars on the lot. The dot plot displays the collected data. W
    9·1 answer
  • I need help on my question hurry plsss
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!