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3 years ago

8+2(1+12÷2)^2 Please explain

Mathematics

1 answer:

Maru [420]3 years ago

8 0

Answer:

The best thing to do here is PEMDAS which is parenthesis, exponents, then eith multiply, divide, add, subtract which will help you figure out the answer and when you plug it all in you get 106 as ur answer

Step-by-step explanation:

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Help plz show work please

borishaifa [10]

Alright, so here we have a cone and a cylinder. The cone has a height of 12. The cylinder has a height of 10.5. Both shapes, because they're on top of each other, have a diameter of 26 or a <em>radius</em> of 13.

Equation for a cylinder: $V_{cylinder} = \pi r^{2} h$

Equation for a cone: $V_{cone} = \frac{1}{3} \pi r^{2} h$

We're going to add both of the volumes of these shapes as soon as we find them.

Cylinder:

$V_{cylinder} = \pi r^{2} h\\= \pi (13)^{2} (10.5)\\\approx 5574.756$

Cone:

$V_{cone} = \frac{1}{3} \pi r^{2} h\\= \frac{1}{3} \pi (13)^{2} (12)\\\approx 2123.717$

Add both values: 2123.717 + 5574.756 = 7698.473 cm³.

Hope this was helpful, let me know if I missed anything!

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3 years ago

Hurry leaving for church

Pavlova-9 [17]

Answer:

250 ft/mile

Step-by-step explanation:

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6 0

3 years ago

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Find the root of the quadratic equation y=3x^2-30x+45

LuckyWell [14K]

$y=3x^2-30x+45\\\\a=3;\ b=-30;\ c=45\\\Delta=b^2-4ac\\\\\Delta=(-30)^2-4\cdot3\cdot45=900-540=360 \ \textgreater \ 0\\\\therefore\\x_1=\dfrac{-b-\sqrt\Delta}{2a}\ and\ x_2=\dfrac{-b+\sqrt\Delta}{2a}\\\\\sqrt\Delta=\sqrt{360}=\sqrt{36\cdot10}=\sqrt{36}\cdot\sqrt{10}=6\sqrt{10}\\\\x_1=\dfrac{30-6\sqrt{10}}{2\cdot3}=\dfrac{30-6\sqrt{10}}{6}=\boxed{5-\sqrt{10}}\\\\x_2=\dfrac{30+6\sqrt{10}}{2\cdot3}=\dfrac{30+6\sqrt{10}}{6}=\boxed{5+\sqrt{10}}$

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4 years ago

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marishachu [46]

Answer:

dang good luck

Step-by-step explanation:

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3 years ago

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MAXImum [283]

1. 0.25. This is because if you have -18.75 and then you add 20 to it you would be left with 0.25.
2. -1.25. This is because if you add AM and Noon together you would get that answer.
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3 years ago

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