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SVETLANKA909090 [29]
3 years ago
13

If it takes 30 seconds to break 12 things how many things can you break in 1 minuet

Mathematics
2 answers:
Eduardwww [97]3 years ago
8 0

Answer:

x = 24

Step-by-step explanation:

We can use a ratio to solve

30 seconds          60 seconds

------------------ = --------------

12 things           x things

Using cross products

30x = 60 * 12

Divide by 30

30x/30 = 60 * 12/30

x = 24

garri49 [273]3 years ago
3 0

Answer:

You can break 24 things

Step-by-step explanation:

One minute is 60 seconds, so all you have to do is double how many things you can break in 30 seconds

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morpeh [17]
Speed of the plane: 250 mph
Speed of the wind: 50 mph
Explanation:
Let p = the speed of the plane
and w = the speed of the wind
It takes the plane 3 hours to go 600 miles when against the headwind and 2 hours to go 600 miles with the headwind. So we set up a system of equations.
600
m
i
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=
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Solving for the left sides we get:
200mph = p - w
300mph = p + w
Now solve for one variable in either equation. I'll solve for x in the first equation:
200mph = p - w
Add w to both sides:
p = 200mph + w
Now we can substitute the x that we found in the first equation into the second equation so we can solve for w:
300mph = (200mph + w) + w
Combine like terms:
300mph = 200mph + 2w
Subtract 200mph on both sides:
100mph = 2w
Divide by 2:
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So the speed of the wind is 50mph.
Now plug the value we just found back in to either equation to find the speed of the plane, I'll plug it into the first equation:
200mph = p - 50mph
Add 50mph on both sides:
250mph = p
So the speed of the plane in still air is 250mph.
6 0
3 years ago
Write the slope-intercept form of the equation of the line that passes through the point (-4,0 ), and is parallel to y=-(5/4x)+4
amid [387]

Answer:

Step-by-step explanation:

hello :

note :

Use the point-slope formula.

y - y_1 = m(x - x_1)   when : x_1= -4      y_1= 0  

     m= +5/4 (parallel means same slope)

an equation in the point-slope form is : y +0= -5/4(x+4)

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2 years ago
What is the definition of constant
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Answer: If you mean the math definiton then a quantity or parameter that does not change its value whatever the value of the variables, under a given set of conditions.

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S_A_V [24]
The probilitu would be 1/3 becouse they are all evan and yeah
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PLEASE HELP!!!! Will be rewarded brainliest!!
kozerog [31]

Answer:

9.5

Step-by-step explanation:

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