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HACTEHA [7]
3 years ago
11

What is the volume of the cylinder below?

Mathematics
1 answer:
Digiron [165]3 years ago
3 0

Answer:

Step-by-step explanation:d

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5+2 root 3 / 7+4 root 3 =a-6root3
STALIN [3.7K]

Answer:

<h2>a = 11</h2>

Step-by-step explanation:

\dfrac{5+2\sqrt3}{7+4\sqrt3}\qquad\text{use}\ (a+b)(a-b)=a^2-b^2\\\\=\dfrac{5+2\sqrt3}{7+4\sqrt3}\cdot\dfrac{7-4\sqrt3}{7-4\sqrt3}=\dfrac{(5+2\sqrt3)(7-4\sqrt3)}{7^2-(4\sqrt3)^2}\qquad\text{use FOIL}\\\\=\dfrac{(5)(7)+(5)(-4\sqrt3)+(2\sqrt3)(7)+(2\sqrt3)(-4\sqrt3)}{49-4^2(\sqrt3)^2}\\\\=\dfrac{35-20\sqrt3+14\sqrt3-8(3)}{49-(16)(3)}=\dfrac{(35-24)+(-20\sqrt3+14\sqrt3)}{49-48}\\\\=\dfrac{11-6\sqrt3}{1}=11-6\sqrt3

8 0
3 years ago
The difference between a number x and 3 is at least nine Write an inequality for the following sentence.
dybincka [34]

Answer:

3 - x ≥ 9

Step-by-step explanation:

At least in inequality means greater than or equal to (≥)

Difference in mathematics means subtraction

The difference between a number x and 3

3 - x

is at least nine

3 - x ≥ 9

The inequality for the sentence is

3 - x ≥ 9

6 0
4 years ago
Create a sample division problem with a 2-digit divisor and give an incorrect answer, showing the steps taken to get the incorre
Makovka662 [10]

Answer:

Incorrect Answer Below

Step-by-step explanation:

Problem: We have a total of 28 candies that need to be divided evenly between 4 students.

(Incorrect) Solution: In order to solve this problem we can seperate the total number of candies into single digits and then divide each digit by 4 like so...

2 / 4 = 0.5

8 / 4 = 2

Now that we have the answer of both of these divisions we can simply add these values together to get the number of candies each student will get

0.5 + 2 = 2.5 candies

6 0
3 years ago
A triangle has sides with lengths of 14 centimeters, 15 centimeters, and 19 centimeters. Is it a right triangle?
Svetlanka [38]
Yes

15+14 > 19 true
15+19 > 14 true
14+19 > 15 true

If all the statements are true then it’s a right triangle.
6 0
3 years ago
Which number is larger 0.707 or 0.71?
mash [69]
0.71 is a larger number
5 0
3 years ago
Read 2 more answers
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