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
Tresset [83]
3 years ago
10

A model is made of a car. The car is 9 feet long and the model is 6 inches long. What is the ratio of the length of the car to t

he length of the model?
a. 6:9
b. 18:1
c. 1:18
Mathematics
2 answers:
Natasha_Volkova [10]3 years ago
7 0

Answer:b

Step-by-step explanation:

Firstly convert 9 feet into inch which is equivalent to 9× 12

=108 inches

9 feet : 6 inches

Is the same as

9×12 inches : 6 inches

108 inches : 6 inches

So 108/6 is 18 and 6/6 is 1

18 inches : 6 inches

velikii [3]3 years ago
5 0

Answer:

B

Step-by-step explanation:

To answer this, we need to see the to see to the fact that they are both in the same unit before we can take the ratio.

Firstly, we know that 1 foot = 12 inches. 9 feet would this be 9 * 12 = 108 inches.

Now we are told to get the ratio of length of car to length of model.

This means 108:6 = 18:1

You might be interested in
This is math questions that we made up!
Lyrx [107]
How did you do that
5 0
3 years ago
The ratio of Aziz's money to Osman's money was 2:1 at first. After Aziz spent $10 ratio became 4:3. How much money did each boy
Dvinal [7]

Answer:

Aziz's money was $30

Osman's  money was $15

Step-by-step explanation:

Let

x-----> Aziz's money at first

y-----> Osman's  money

we know that

\frac{x}{y}=\frac{2}{1}

x=2y ------> equation A

\frac{x-10}{y}=\frac{4}{3} -----> equation B

substitute equation A in equation B and solve for y

\frac{2y-10}{y}=\frac{4}{3}\\ \\6y-30=4y\\ \\6y-4y=30\\ \\2y=30\\ \\ y=15

Find the value of x

x=2(15)=30

therefore

At first

Aziz's money was $30

Osman's  money was $15

8 0
2 years ago
I hope its bigger so u can seeeeeeeeeee!!!
Nata [24]

Answers:

Gabe needs 30 liters of the 50% solution

Gabe needs 30 liters of the 70% solution

Both answers are 30

==================================

Explanation:

We have two beakers, each of which we don't know how much is inside. Let's call this x and y

x = amount of liquid in the first beaker (water+acid)

y = amount of liquid in the second beaker (water+acid)

We're told that the beakers have a 50% solution and a 70% solution of acid. This means that the first beaker has 0.5*x liters of pure acid, and the second beaker has 0.7*y liters of pure acid. In total, there is 0.5x+0.7y liters of pure acid when we combine the two beakers. This is out of x+y = 60 liters total, which we can solve for y to get y = 60-x. We will use y = 60-x later on when it comes to the substitution step

We can divide the total amount of pure acid (0.5x+0.7y liters) over the total amount of solution (x+y = 60) to get the following

(0.5x+0.7y)/(x+y) = (0.5x+0.7y)/60

We want this to be equal to 0.6 because Gabe wants a 60% solution when everything is said and done, so

(0.5x+0.7y)/60 = 0.60

0.5x+0.7y = 0.60*60 .... multiply both sides by 60

0.5x+0.7y = 36

0.5x+0.7( y ) = 36

0.5x+0.7(60-x) = 36 ........ replace y with 60-x (substitution step)

0.5x+0.7(60)+0.7(-x) = 36 .... distribute

0.5x+42-0.7x = 36

-0.2x+42 = 36

-0.2x = 36-42 .... subtract 42 from both sides

-0.2x = -6

x = -6/(-0.2) .... divide both sides by -0.2

x = 30

He needs 30 liters of the 50% solution

Use this x value to find y

y = 60-x

y = 60-30

y = 30

So he needs 30 liters of the 70% solution


3 0
3 years ago
Find the value of A in the equation 5/a+3=3/A-2
amid [387]
5+3a = 3-2a
So
5a = -2
a=-2/5=-0.4
4 0
3 years ago
Read 2 more answers
Help!!!1!!!!!!!!!!!!!!!!!!!!!!
ad-work [718]
Equation B is written in vertex form, which means you can read the vertex (extreme value) from the numbers in the equation.

Vertex form is
   y = a(x -h)² + k
where the vertex (extreme point) is (h, k). Whether that is a maximum or a minimum depends on the sign of "a". When "a" is negative, the graph is a parabola that opens downward, so the vertex is a maximum.


Equation B reveals its extreme value without needing to be altered.
The extreme value of this equation is a maximum at the point (2, 5).

3 0
3 years ago
Other questions:
  • 2b for b = 9 evaluate the expression
    9·2 answers
  • What equation is the inverse of y=7x^2-10?
    11·1 answer
  • HELP ME PLEASE I GOTTA PASS
    8·1 answer
  • How is slope determined from this graph? Describe exactly how to determine the slope.
    6·1 answer
  • Multiply the numerators, and then multiply the denominator. Find the product. <br><br> 11/12 x 2/5
    15·1 answer
  • 4 sinA + 5 sinA what is the answer of it​
    13·1 answer
  • Suppose 12% of students surveyed said they have tried riding a zip line.
    13·1 answer
  • X=0,100,200,300, y=3.5,38.5 73.5, 108.5
    12·2 answers
  • No one answered the first one so ill give brainlist to someone who knows the naswer
    9·2 answers
  • Help! 20 Points! + Brainliest! Which expressions have been simplified correctly? Choose exactly two answers that are correct.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!