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2 years ago

I will give brainlest please answer and explain

Mathematics

1 answer:

Artemon [7]2 years ago

3 0

Answer:

Step-by-step explanation:

There is 6 students in the 8hr zone.

Gosh, do I have to explain? A is a, c is c!

4+6+6+6.5+6.5+6.5+6.5+7+7+7+7+7.5+7.5+7.5+8+8+8+8+8+8.5=141.

141÷20=7.05. So, no, it is not b.

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Hello please help i’ll give brainliest

dlinn [17]

Answer:

<h2>The sun and the earth's interior </h2>

Step-by-step explanation:

As,

The Earth has two basic sources of energy -

Earth's Interior- hat reaching the Earth from the Sun (Solar Energy) and that reaching the surface of the Earth the Earth itself (Internal or Geothermal Energy). 
Solar Energy - reaches the Earth in the form of radiant energy, and makes up 99.987% of the energy received by the Earth.

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2 years ago

A: 7x - 3x +10 B:+4x²+66-4 A-B=

Annette [7]

Answer:

A-B=7x-3x+10-4x²-66+4
4x-52-4x²

hope it helps

stay safe healthy and happy.

8 0

2 years ago

A trough of water is 20 meters in length and its ends are in the shape of an isosceles triangle whose width is 7 meters and heig

Vaselesa [24]

Answer:

a) Depth changing rate of change is $0.24m/min$ , When the water is 6 meters deep

b) The width of the top of the water is changing at a rate of $0.17m/min$ , When the water is 6 meters deep

Step-by-step explanation:

As we can see in the attachment part II, there are similar triangles, so we have the following relation between them $\frac{3.5}{10} =\frac{a}{h}$ , then $a=0.35h$ .

a) As we have that volume is $V=\frac{1}{2} 2ahL=ahL$ , then $V=(0.35h^{2})L$ , so we can derivate it $\frac{dV}{dt}=2(0.35h)L\frac{dh}{dt}$ due to the chain rule, then we clean this expression for $\frac{dh}{dt}=\frac{1}{0.7hL}\frac{dV}{dt}$ and compute with the knowns $\frac{dh}{dt}=\frac{1}{0.7(6m)(20m)}2m^{3}/min=0.24m/min$ , is the depth changing rate of change when the water is 6 meters deep.

b) As the width of the top is $2a=0.7h$ , we can derivate it and obtain $\frac{da}{dt}=0.7\frac{dh}{dt} =0.7*0.24m/min=0.17m/min$ The width of the top of the water is changing, When the water is 6 meters deep at this rate

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2 years ago

For her phone service, Lisa pays a monthly fee of $27, and she pays an additional $0.05 per minute of use. The least she has bee

Sergio [31]

The equation to find the amount of money spent is 27 + 0.05m. This equation, in this case, needs to be larger or equal to 90.70. So our inequality would be:

27 + 0.05m >= 90.70

Now we can solve this equation for m.

27 + 0.05m >= 90.70
0.05m >= 63.70
m >= 1274

4 0

2 years ago

5._35 rounded to the nearest whole number is 5? Giving brainlists

Tatiana [17]

Answer:

yes it is 5

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers