a student is running a 3k race he runs 1 km race every 2 minutes select the function that describes his distance from the finish line

By finding and using the scale factor for the model, we conclude that the height of the model is 9.6 inches.

The ratio between the model's width and the real width is the scale factor, and all the dimensions change following that scale factor.

We have:

8 in = 10ft

1 ft = (8/10) in

This means that each feet in the real life, will be represented with (8/10) inches in the model.

Now we know that the real height is 12ft, then the model's height will be:

12* (8/10) in = 9.6 in

So the correct option is B.

If you want to learn more about scale factors, you can read:

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Answer:

9.6

Step-by-step explanation:

took usatest prep got a 100%

Answer:

2

Step-by-step explanation:

2 times 2 times 2 equals 8

Answer:

20

Step-by-step explanation:

20 x 2 =40

40 is under 58 and the closest to 58

the next 10 is 30 and 30 x 30 is over 58 with 60

Answer: 1/10, 1/7, 2/9, 2/5, 7/11, 1/4, 1/10, 1/7,  1/9, 1/2 , 1/8, 1/12, 0/1, 0/0
1/13, 1/3, 1/4

Step-by-step explanation: i think i know all the answers

Answer: 57m

Step-by-step explanation: Speed is 3m/s

Time is 19seconds

distance =speed × time

Distance = 19 × 3

Answer:

57 m.

Step-by-step explanation:

In 1 second it can run 3 m

So in 19 s it can run 3*19

= 57 m.

Answer:

x = 73/12

Step-by-step explanation:

Given:

[tex]\displaystyle \large{12(x-7)=-11}[/tex]

Distribute 12 in x-7:

[tex]\displaystyle \large{12x-84=-11}[/tex]

Add both sides by 84:

[tex]\displaystyle \large{12x-84+84=-11+84}\\\displaystyle \large{12x=73}[/tex]

Divide both sides by 12:

[tex]\displaystyle \large{\dfrac{12x}{12}=\dfrac{73}{12}}\\\displaystyle \large{x=\dfrac{73}{12}}[/tex]

Therefore, the solution is x = 73/12

Answer:

[tex]\large\boxed{\bf\:x = \frac{73}{12} = 6\frac{1}{12} \approx 6.083}[/tex]

Step-by-step explanation:

[tex]12(x - 7) = -11[/tex]

Multiply 12 by x & 7 (distributive property) in the left hand side of the equation .

[tex]12(x-7)=-11\\(12*x)-(12*7)=-11\\12x - 84 =-11[/tex]

Bring -84 to the right hand side of the equation. Then,

[tex]12x = -11 + 84\\12x = 73\\x=\frac{73}{12} \\\\\boxed{\bf\:x = \frac{73}{12} = 6\frac{1}{12} \approx 6.083}[/tex]

[tex]\rule{150pt}{2pt}[/tex]

Answer:

C. 516 in2

Step-by-step explanation:

I took the test last week and I got this question corrected

Answer:

d

Step-by-step explanation:

d

The sales equation of the product is an illustration of a quadratic function, and the lifeline of the product is 12 years

The sales equation is given as:

S(t) = -(t - 3)² + 81

The lifeline of the product is when the sales hits 0.

This means that S(t) = 0

So, we have:

-(t - 3)² + 81 = 0

Subtract 81 from both sides

-(t - 3)² = -81

Divide both sides by -1

(t - 3)² = 81

Take the square root of both sides

t - 3 = 9

Add 3 to both sides

t = 12

Hence, the lifeline of the product is 12 years

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Read more about quadratic functions at:

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Answer:

In geometry, the incircle or inscribed circle of a triangle is the largest circle contained in the triangle; it touches (is tangent to) the three sides. The center of the incircle is a triangle center called the triangle's incenter.

Answer:

200 km/hr

Step-by-step explanation:

Let Va = the velocity of the airplane

Let Vw = the velocity of the wind

When flying with the wind:

(Va+Vw)*(4 hours) = 4000

4Va + 4Vw = 4000

4Vw = 4000 - 4Va

Vw = 1000 - Va

When flying against the wind:

(Va-Vw)*(7 hours) = 4200 km

7Va - 7Vw = 4200

Substitute 1000-Va for Vw and solve for Va:

7Va - 7(1000-Va) = 4200          

7Va -7000 + 7Va = 4200

14Va = 11200

Va = 800 km/hr

Rate of wind:

Vw = 1000 - Va = 1000 - 800 = 200 km/hour

Answer:

y=6x

Step-by-step explanation:

1. find the slope m. Pick two points on the line, such as (0,0) and (1,6). Plug those points into the slope formula.

m=change in y/change in x

m=6-0/1-0   Plug in (0,0)(1,6)

m=6/1    simplify

m=6  

The slope is 6

2. Find the y-intercept. Since the line crosses the y-axis at 0, the y-intercept is 0.

3. Use the slope m=6 and the y-intercept b=0 to write the equation in slope-intercept form.

y=mx+b

y=6x+0   Plug in m=6 and b=0

y=6x

Answer:

26 miles per gallon

Step-by-step explanation:

Divide 416 by 16 to find miles per gallon :)

Answer:

its A

Step-by-step explanation:

have you smiled today? its very important:)

Answer:

A

Step-by-step explanation:

Answer:

The answer is option B

3/5

Answer:

24 = x + 6

Step-by-step explanation:

24 =  x + 6

Answer:

x = 8

Step-by-step explanation:

24x = 6 x 32

24x = 192

x = 192/24

x = 8

Answer:

(a) 5.61

Step-by-step explanation:

Rearrange from smallest to largest:

☟︎︎︎

5.61 < 16.5 < 51.6 <56.1

Answer:

Step-by-step explanation:

Fraction:

Simplify:

Answer would be 9/36.

Answer:

L×W×B

10×7×6

=420cm of triangular prism

Answer:

A reflection on the y axis, and 12 units to the right

Step-by-step explanation:

This is true because if you translate something from one variable, you are going over the second variable.

Sorry I had to take down the answer, I might be wrong.

Answer:

14 in

Step-by-step explanation:

area cylinder= area of base × height of cylinder

area of cylinder = (pi × radius²) × H

(sub in values )

196×pi = (pi x r²) × 1

(196×pi)/1 = pi × r²

(196×pi)/pi = r²

(pics cancel each other )

then, square root 196= r

14 in = radius

Answer:

Step-by-step explanation:

First find the natural log of 4200:  It is 8.343.

Then 4200 = e^8.343

Answer:

The answer is B. 60°

Step-by-step explanation:

The Unit Circle.

A =  sin^-1 ( [tex]\frac{\sqrt{3} }{2}[/tex]) = 60°

The 63.5% of the students who do not exercise is the wrong percentage because 70% of the students do not exercise.

The amount of something is expressed as if it is a part of the total which is a hundred. The ratio can be expressed as a fraction of 100. The word percent means per 100. It is represented by the symbol ‘%’.

Miguel thinks that his data do not support the article's claim because 63.5% of the students who made the honor roll at his school do not exercise.

The percentage of the students who do not exercise will be

[tex]\rm P = \dfrac{112}{160} \times 100\\\\P = 70\%[/tex]

The 63.5% of the students who do not exercise is the wrong percentage because 70% of the students do not exercise.

More about the percentage link is given below.

https://brainly.com/question/8011401

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Answer:

x = 35° , y = 90°

Step-by-step explanation:

the exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

145° is an exterior angle of the triangle , then

y + 55° = 145° ( subtract 55° from both sides )

y = 90°

the sum of the 3 angles in a triangle = 180° , then

x + y + 55° = 180°

x + 90° + 55° = 180°

x + 145° = 180° ( subtract 145° from both sides )

x = 35°

Answer:

27<AB<81

Step-by-step explanation:

The sum of two sides of a triangle have to be than the length of the third side. 27+54 is 81, so the AB has to be less than 81. Now, to find the minimum, I can say 27+x has to be greater than 54, so x has to be greater than 27. Therefore, the answer has to be between 27 and 81, so the 2nd one is correct.

Answer:

B. 27 < AB < 81

Step-by-step explanation:

Nice

Answer:

5 is the mode of the data set.

Step-by-step explanation:

When finding the numbers of a bar graph like this, we count each x and the placement to find the number and amount of times it is shown.

Ex. There is 4 x's above 5. Meaning there are four, 5's.   5, 5, 5, 5.

The mode of a data set, is the number that appears the most often.

So, we can see that the 5 has the most x's, we know that 5 apears the most. Making 5, the mode.