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
TiliK225 [7]
3 years ago
14

Out of 30 students are surveyed 17 have a dog based on these results predict how many of the 300 students in the school have a d

og
Mathematics
2 answers:
elena-s [515]3 years ago
6 0
 17 / 30  =  x / 300

cross multiply 

30x = 5,100

divide by 30

x = 170


or 


\frac{17}{30} * 10 =  \frac{170}{300}

if it is simpler.
zubka84 [21]3 years ago
5 0
From\ proportion:\\
30\ students\ 17\ dogs\\
300\ students\ x\ dogs\\\\Cross\ multiplication\\
30x=300*17\\
30x=5100\ \ \ | divide\ by\ 30\\
x=170\\\\
There\ will\ be\ 170\ dogs\ for\ 300\ students.
You might be interested in
A music store sold a total of 27 used trumpets and clarinets in one month. Trumpets cost $149 and clarinets cost $99. If total s
vodomira [7]
Answer: 16

Solution:

1) Use letters to identify the variables:

Number of trumpets: t
Number of clarinets: c

2) Translate each statement into algebraic (mathematical) language.

2.1) Sold a total of 27 used trumpets and clarinets

=> t + c = 27

2.2) Trumpets cost $149 and clarinets cost $99

Total cost of the trumpets: 149t
Total cost of clarinets: 99c

Total cost = 149t + 99c

2.3) Total sales were $3223

=> 149t + 99c = 3223.

3) State the system of equations:

Equation (1) t + c = 27
Equation (2) 149t + 99c = 3223

4) Solve the system of equations:

4.1) Multiply equation 1 by 149:

=> 149t + 149c = 4023

4.2) Subtract the equation (2) from the equation obtained in 4.1

=> 149c - 99c = 4023 - 3223

=> 50c = 800

=> c = 800 / 50 = 16

5) Verify the solution:

From equation (1) t = 27 - 16 = 11

Total cost = 149*11 + 99*16 = 3223

Now you have a verified answer: they sold 16 clarinets
7 0
3 years ago
Which graph shows that Cindy reads about 3/4 of the time while riding in the car?
wolverine [178]

The graph that shows a unit rate of 3/4, which is the time Cindy reads while riding in the car is the graph attached below.

<h3>What is Unit Rate?</h3>

Unit rate can be described as a constant or exactly how much of one quantity is per 1 unit of another quantity.

Unite rate (k) = x/y.

In the graph attached below, when x (hours driving) = 3, y (hours reading) = 4.

Therefore, unit rate = 3/4. We can then conclude that the graph that shows that Cindy reads 3/4 of the time she rides in a car is the graph attached below.

Learn more about unit rate on:

brainly.com/question/19493296

#SPJ1

4 0
1 year ago
Don’t know the answer.
kvasek [131]
They are both isosceles triangles
6 0
3 years ago
Brenda considers geometric figures and concepts that are related to lines. Which terms are considered undefined?
Umnica [9.8K]

Answer:

A, C, F

Step-by-step explanation:

4 0
3 years ago
-12 increased by half of a number is 28. What is the number
Nadya [2.5K]

Answer:

80

Step-by-step explanation:

28-28=0

0-12= -12

28+12 = 40

28-40 = -12

40 is the increase

40 is half of 80

So, the answer is 80

To check: -12 + 40 (half of a number; 80) = 28

Hope this makes sense. If you require further information, do not hesitate to ask!

3 0
2 years ago
Read 2 more answers
Other questions:
  • Cisco wants to purchase three items at the sporting goods store. The items he wants to buy are football pants for $21.99, footba
    15·1 answer
  • How many time does 16 go into 4
    8·2 answers
  • 20+3(7+4)+5+2(7+9)?????
    15·2 answers
  • Find the derivative of f(x) = 2x2 + 7x at -3. That is, find f'(-3).
    6·1 answer
  • PLEASE HELP AND LEAVE A SMALL EXPLANATION
    15·1 answer
  • You do not have to exsplain
    13·1 answer
  • A math instructor claims that college women have more credit card debt than college men. She conducts a random sample of 38 coll
    13·1 answer
  • 4/5 + 2/3 =<br>1 1/2-2/6=​
    6·2 answers
  • If (-1,0) belong to the function f where f(x) =M X +2, then M= <br><br>Pls answer ​
    7·1 answer
  • Combine Like terms
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!