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Dmitry_Shevchenko [17]
3 years ago
5

Jenna starts her homework at 6:30 P.M. She solves math problems for 20 minutes. She works on a paper for history for 30 minutes

and studies science vocabulary for 15 minutes. Finally, Jenna reads for 40 minutes. When will Jenna finish her homework?
Mathematics
2 answers:
tigry1 [53]3 years ago
5 0

Answer:its either 7:20 or 8:00 i think

Step-by-step explanation:

MatroZZZ [7]3 years ago
4 0
Jenna will finish her homework at 8:15
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Answer:

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Step-by-step explanation:

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3 years ago
One triangle has a weight of 6 grams. What is the weight of one square?
kramer

Answer:

Assuming you want them to weigh the same the answer would be 3 grams

Step-by-step explanation:

Because... 6 × 3 = 18 3 × 4 = 12

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3 years ago
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Work out the ratio of the volume of the sphere to the volume of the cylinder
N76 [4]

so we know the radius of the sphere is 8, and its surface area is 4πr², therefore its surface area is 4π8², namely 256π.


we also know that the surface area of the cylinder is half that of the sphere, namely 256π/2 or 128π, let's use that surface area to get the height h.


\bf \textit{total surface area of a cylinder}\\\\ SA=2\pi r(h+r)~~ \begin{cases} r=4\\ SA=128\pi  \end{cases}\implies 128\pi =2\pi (4)(h+4) \\\\\\ 128\pi =8\pi(h+4)\implies \cfrac{128\pi }{8\pi }=h+4\implies 16=h+4\implies \boxed{12=h}


since now we know h and r for the cylinder, and we also know r for the sphere, let's check their volume's ratio.


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8 0
3 years ago
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fenix001 [56]

Answer:

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Step-by-step explanation:

Hello

To simplify the polynomial we must eliminate the parentheses

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ax^{n}*bx^{m} =abx^{n+m}

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Answer:

is this a maths question?

Step-by-step explanation:

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