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2 years ago

Help meeee if you want to please thank you have a good day!

Mathematics

2 answers:

Minchanka [31]2 years ago

7 0

The answer is 2.7

I’m not an expert at this but i did some research so I hope I can help

It’s 2.7 because the formula for calculating density is to divide the mass by the volume and in you do that for each of them you get 2.7 every time

astra-53 [7]2 years ago

6 0

Answer: 2.7
10.8 / 4 = 2.7
18.9 / 7 = 2.7 and so on...

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Answer:

y=3x+13

Step-by-step explanation:

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3 years ago

A road perpendicular to a highway leads to a farmhouse located d miles away. An automobile traveling on this highway passes thro

pshichka [43]

Answer:

$\frac{dh}{dt}=\frac{30r}{\sqrt{d^{2}+900}}$

Step-by-step explanation:

A road is perpendicular to a highway leading to a farmhouse d miles away.

An automobile passes through the point of intersection with a constant speed $\frac{dx}{dt}$ = r mph

Let x be the distance of automobile from the point of intersection and distance between the automobile and farmhouse is 'h' miles.

Then by Pythagoras theorem,

h² = d² + x²

By taking derivative on both the sides of the equation,

$(2h)\frac{dh}{dt}=(2x)\frac{dx}{dt}$

$(h)\frac{dh}{dt}=(x)\frac{dx}{dt}$

$(h)\frac{dh}{dt}=rx$

$\frac{dh}{dt}=\frac{rx}{h}$

When automobile is 30 miles past the intersection,

For x = 30

$\frac{dh}{dt}=\frac{30r}{h}$

Since $h=\sqrt{d^{2}+(30)^{2}}$

Therefore,

$\frac{dh}{dt}=\frac{30r}{\sqrt{d^{2}+(30)^{2}}}$

$\frac{dh}{dt}=\frac{30r}{\sqrt{d^{2}+900}}$

3 0

3 years ago

Find the fractional notation for the ratio 5 to 9

vazorg [7]

5:9 is just 5/9
Hope this helps!

5 0

2 years ago

Question shown in image.

PolarNik [594]

Answer: Step-by-step explanation:

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2 years ago

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grigory [225]

Answer:

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Step-by-step explanation:

The number 238 is in the hundreds as the first digit is in the hundreds. You can tell because you say "two hundred."

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7 0

3 years ago