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shepuryov [24]
3 years ago
9

A train moves a constant speed and travels 6 miles in 4 minutes. What is its speed in miles per minute?

Mathematics
1 answer:
saw5 [17]3 years ago
5 0

1.5 miles per minute

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A spherical balloon with radius r inches has volume defined by the function below. Find a function that represents the amount of
bixtya [17]
<span>v = 4/3*pi*r^3

derivating both sides with respect to t 
dv/dt = 4*pi*r^2*dr/dt
 
when d = 1.7, r = 0.85, and dv/dt = 2:
2 = 4*pi*(0.85)^2*dr/dt
 
thus
dr/dt = 1/(2pi*(0.85)^2)
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4 0
3 years ago
What is the equation of this circle in standard form M(2,4) N(9,4) these are coordinates across the diameter of the circle?
igomit [66]
The standard form is

(x-xo)² + (y-yo)² = r²

Where xo,yo is the center of the circumference
and r is the radius.

We find the distance between the points to determine the <span>diameter

d=sqrt ((9-2)</span>² + (4-4)²<span>) = sqrt (49) = 7

The radius of the circumference is d/2 = 7/2 = 3.5

And we can see that those points are at the same coordinate y = 4 

The center is given then by , x = (9+2)/2 = 5.5
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The equation results

(x-5.5)</span>² + (y-4)² = (3.5)²<span>

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3 0
3 years ago
Solve for x<br> 29=4x-11
Gemiola [76]
The correct answer for this would be X=10
3 0
3 years ago
Read 2 more answers
I need help with my ixl ..
Ad libitum [116K]

Answer:

The measure of angle E is 45 degrees

Step-by-step explanation:

To get the measure if angle E, we use the appropriate trigonometric ratio

From the question, EF is the hypotenuse since it faces the right angle

EG is adjacent to angle E

so we are going to use the trigonometric ratio that connects adjacent to the hypotenuse

This trigonometric ratio is the cosine

It is the ratio of the adjacent to the hypotenuse

Thus,

we have it that;

Cos E = EG/EF

cos E = 6√26/12√13

E = arc Cos ( 6 √26/12 √13)

E = 45 degrees

6 0
3 years ago
What is a simplified expression for 3(2x + y)
Brut [27]

Answer:

6x + 3y

Step-by-step explanation:

Multiply 3 by 2x.

Multiply 3 by y.

This is known as the distributive law.

4 0
3 years ago
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