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4 years ago

5

Search for the volume of a cube 10 cm

1 answer:

Elis [28]4 years ago

8 0

V = a^3
10 * 10 * 10 = 1000 cm

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2. The length of a rectangle is 5 feet more than the width. The perimeter of the rectangle is

nevsk [136]

In order to solve this let us for at assume that the value of the width is X. Therefore the length will be x+5.

We can now write an equation:

(X+5) + (X+5) + X + X = 58

Combining like terms we should get
4X + 10 = 58

Now subtract 10 from both sides to get
4x = 48

Divide by 4 now and you should get

X = 12

Now we know the value of X and therefore the width.

7 0

3 years ago

A cube has a volume of 216 cubic feet. What is the length of an edge of this cube?

kupik [55]

Answer:

6

Step-by-step explanation:

a cube has sides of the same length hence its volume is obtain as cubed side.

we have the volume and we need the side:

$\sqrt[3]{216} =\sqrt[3]{3^{3} 2^{3} } = 3*2 = 6$

3 0

3 years ago

If an=24, which recursive formula could represent the sequence below? ...,24,88, 664, 8408A) An=(An-2)^2 + An-1 ; A1=2B) An= 3An

Rudik [331]

When we substitute $n = 4$ , we get...

$a_{n-3}=a_1\\ \\ a_{n-2}=a_2\\ \\ a_{n-1}=a_3\\ \\ a_n=a_4$

Comparing the given sequence: 24, 88, 664, 8408, we get

$a_{n-3}=a_1=24\\ \\ a_{n-2}=a_2=88\\ \\ a_{n-1}=a_3=664\\ \\ a_n=a_4=8408$

We need to substitute the above values in each option and check which is TRUE.

----

<u>Option A</u>

$a_n=(a_{n-2})^2+a_{n-1}, a_1=2\\ \\ a_n=(88)^2+664=7744+664\\\\a_n=8408 (TRUE)$

<u>Option B</u>

$a_n=3a_{n-1}+16\\ \\ a_n=3(664)+16\\\\a_n=2008 (FALSE)$

<u>Option C</u>

$a_n=(n)a_{n-1}-8\\ \\ a_4=(4)a_3-8=4(664)-8\\\\a_4=2648 (FALSE)$

<u>Option D</u>

$a_n=2a_{n-2}+7a_{n-1}\\ \\ a_n=2(88)+7(664)\\ \\ a_n=4824(FALSE)$

Conclusion:

Option A is the correct answer.

6 0

4 years ago

Read 2 more answers

2x/2 = 90/2 pls solve it it

svet-max [94.6K]

Answer:

x=45

Step-by-step explanation:

2(45)=90

90/2=90/2

3 0

3 years ago

Can someone help me thank you

mrs_skeptik [129]

Answer: y=20x +0

Step-by-step explanation: y=mx (slope) + b (y-intercept). You can search more about how to find the slope of a equation and y-intercept

6 0

3 years ago