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anastassius [24]

3 years ago

9

What is the surface area of a can that has radius of 9 ft. and height of 3 ft.? SA = __________ ft.2. Use 3.14 for pi. A. 678.2

B. 458.6 C. 354.3 D. 292.0

1 answer:

Kruka [31]3 years ago

8 0

Answer:

678.2

Step-by-step explanation:

To find the surface area you need to use the expression $2\pi rh + 2\pi r^2$

When you substitute the numbers in you get 678.24

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Step by step 7 ,9, and 11 please. EVEN IF U CANT DO ALL, u can help with 1 or 2. Ill mark brainly.

gregori [183]

Answer:

7) $4 \ log_3(x) - 4 \ log_3(y)$

9) $5log_4(7) - 5log_4(12)$

11) $5log_5 \ (x) - log_5 \ (y)$

Step-by-step explanation:

$log_3 (\frac{x}{y})^{4}$

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Use Logarithm of a Quotient which states

$log_b \frac{M}{N} = log_b M-log_bN$

And also use Logarithm of a Power which states

$log_b\ M^{n} = n\log_bM$

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So using these two properties,

7. $4 \ log_3(x) - 4 \ log_3(y)$

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For #9, use the same logarithm propertied

$log_4(\frac{7}{12})^5 = 5log_4(7) - 5log_4(12)$

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#11 is also the same concept

$log_5\ \frac{x^5}{y} = 5log_5 \ (x) - log_5 \ (y)$

It is not - 5 log5(y) since only x is to the power of 5 not y

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Hope this is what you were looking for and helps you! Have a nice day/night :)

5 0

2 years ago

Sammi believes that 0.3 repeating is a rational number. Is Sammi correct?

Ket [755]

Answer: Yes, Sammi is correct because although it is repeating, it is expressible as a ratio of 2 integers.

I hope this helps!

Step-by-step explanation:

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2 years ago

PLS SOLVE THIS<br> I WILL MARK BRAINLIEST

Paraphin [41]

Answer:

AB = 25 units

Step-by-step explanation:

In right triangle ACB, $CD\perp AB$

Therefore, by geometric mean property:

$CD^{2} ={AD\times DB} \\ \\ {10}^{2} = AD\times 5 \\ \\ 100 = 5AD \\ \\ AD = \frac{100}{5} \\ \\ AD = 20$

AB = AD + DB

AB = 20 + 5

AB = 25 units

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strojnjashka [21]

The answer is 20x^2 + 14x + 2

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Andreyy89

This is the answer for graph

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