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lesantik [10]
2 years ago
6

The distribution of the amount of money spent by students on textbooks in a semester is approximately normal in shape with a mea

n of 358 and a standard deviation of 37.According to the standard deviation rule, approximately 68% of the students spent between $ and $ on textbooks in a semester.
Mathematics
1 answer:
Mnenie [13.5K]2 years ago
7 0

Answer:

I'm sorry I don't know

Step-by-step explanation:

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Find 5 rational numbers between -3/4 and 5/6
insens350 [35]

Answer:

1/2, 1/3, 1/4, 1/5, 1/6

Step-by-step explanation:

6 0
3 years ago
A metal cube contracts when it is cooled. if the edge of the cube is decreasing at a rate of 0.2 cm/hr, how fast is the volume c
aleksandr82 [10.1K]

Answer:

2160 cm³/hour

Step-by-step explanation:

By default, we know that the volume of a cube is given as s³

Thus, the Volume function, V = s³

When we differentiate with respect to time we have

dV/dt = 3s² (ds/dt), where ds/dt = 0.2

Then we go ahead and substitute all the given parameters

dV/dt = 3 x 60 x 60 x 0.2

dV/dt = 10800 * 0.2

dV/dt = 2160 cm³/hour

This means that the volume decreases by a rate of 2160 cm³/hour at the instant its edge is 60 cm

7 0
2 years ago
Help me please...!!!
Bogdan [553]
Answer is B.
8^1/3 = (2^3)^1/3 = 2
8 0
3 years ago
The number of mosquitoes in Brooklyn (in
stealth61 [152]

Answer:

Maximum is 4

Step-by-step explanation:

M(x) is quadratic function, so we need to fin maximum.

m(x)=-x(x-4)

m(x)=-x^2+4x

To find a maximum we need to find m’

M’(x)=-2x+4

M’(x)=0 if x=2

The maximum is in the point x=2

M(2)=-2(2-4)=4

5 0
3 years ago
Read 2 more answers
4. If f(x) = 4x - 9, what is the equation for f1(x)?
VikaD [51]
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3 years ago
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