2 years ago

How to rotate 90 degree counterclockwise

Mathematics

1 answer:

Stella [2.4K]2 years ago

3 0

Rotate once to the left side

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Find the least common denominator of 1/6 and 2/7

harina [27]

Answer:

it is it is 42

Step-by-step explanation:

7/42+12/42=19/42

5 0

2 years ago

Monifer used substitution to solve this system of equations. Which equation could be the result of her first step? 3a +b=225 b=a

weeeeeb [17]

3a + a - 15 = 225 . your substituting b(a-15) into the first equation. <span />

6 0

2 years ago

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Gravel is being dumped from a conveyor belt at a rate of 30 ft3/min, and its coarseness is such that it forms a pile in the shap

pogonyaev

Answer:

Rate of increase in height = $\frac{dh}{dt}=0.3156ft/min$

Step-by-step explanation:

we know that volume of a cone is given by

$V=\frac{1}{12}\pi d^{2}h$

It is Given that diameter equals height thus we have

$V=\frac{1}{12}\pi h^{2}h\\\\V=\frac{1}{12}\pi h^{3}$

Differentiating both sides with respect to time we get

$\frac{dV}{dt}=\frac{1}{12}\pi \frac{dh^{3}}{dt}\\\\\frac{dV}{dt}=\frac{1}{12}\pi(3h^{2}\frac{dh}{dt})$

Applying values and solving for $\frac{dh}{dt}$ we get

$\frac{dh}{dt}=\frac{12\frac{dV}{dt}}{3\pi h^{2}}\\\\\frac{dh}{dt}=0.3156ft/min$

8 0

2 years ago

After the 4th half life how much of the sample is left if the mass is 100g.

vazorg [7]

Answer:

$\huge\boxed{\sf 6.25 \ g}$

Step-by-step explanation:

After every Half life , Half of the mass is left.

After 1st Half life = 100 g / 2 = 50 g

After 2nd Half life = 50 / 2 = 25 g

After 3rd Half life = 25 / 2 = 12.5 g

After 4th Half life = 12.5 / 2 = 6.25 g

$\rule[225]{225}{2}$

Hope this helped!

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2 years ago

4<br> Find the perimeter of a<br> Square with a side<br> length of 7 meters.

11Alexandr11 [23.1K]

Answer: P=28 meters

Step-by-step explanation:

$P=4$ × a ⇒ a is the side length

$P=4$ × $7$

$P=28$

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2 years ago

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