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4 years ago

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A model is made of a car. the car is 10 feet long and the model is 7 inches long. what is the ratio of the length of the car to

the length of the model? question 2 options: 7 : 120 7 : 10 10 : 7 120 : 7

1 answer:

Stells [14]4 years ago

5 0

hey!

Answer: 120:7

Hope this helps!

~LENA~

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PLSSS HELP IF YOU TURLY KNOW THISS

Doss [256]

Answer:

the answer s 6 and seventh squared so it's a 7 on the top of the 6

Step-by-step explanation:

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3 years ago

3 4/5 expressed as a decimal is<br><br> 3.40<br> 3.45<br> 3.50<br> 3.80

mart [117]

It is expressed as 3.80

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3 years ago

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A person's heart beats 200 times in 3 minutes. How many times will it beat in an hour (remember...60 minutes in an hour) ?

andreev551 [17]

200 times / 3 minutes = x times / 60 minutes

3x = 12000

x = 4000 times in an hour

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3 years ago

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I need HELP in 5 min!!!

noname [10]

Answer:

75

Step-by-step explanation:

By "composite" we mean "numbers that can be factored further."

The numbers between 10 and 20 but not including 10 or 20 are:

12, 14, 15, 16, 18

12, 14, 15, 16 and 18 are all composite numbers (all can be factored).

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4 0

3 years ago

Neveah has created the function f(x) =the quantity of 2x plus 4, divided by 3 to represent the growth of her hair, where x repre

dangina [55]

Given that:

The function to represent the growth of Neveah hair is

$f(x)=\dfrac{2x+4}{3}$

where, x represents the number of months since her last hair cut.

To find:

The inverse of function and time when her hair will have grown 6 inches.

Solution:

We have,

$f(x)=\dfrac{2x+4}{3}$

Put f(x)=y.

$y=\dfrac{2x+4}{3}$

Interchange x and y.

$x=\dfrac{2y+4}{3}$

Isolate y.

$3x=2y+4$

$3x-4=2y$

$\dfrac{3x-4}{2}=y$

Put $y=f^{-1}(x)$ .

$f^{-1}(x)=\dfrac{3x-4}{2}$

So, the required inverse function is $f^{-1}(x)=\dfrac{3x-4}{2}$ . It represents the number of months to grow her hair x inches.

She can predict when her hair will have grown 6 inches by putting x=6 in the inverse function.

Put x=6 in the inverse function.

$f^{-1}(6)=\dfrac{3(6)-4}{2}$

$f^{-1}(6)=\dfrac{18-4}{2}$

$f^{-1}(6)=\dfrac{14}{2}$

$f^{-1}(6)=7$

Therefore, growth of her hair is 6 inches in 7 months.

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3 years ago