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4 years ago

This may seem silly but how do you multiply 8 times 8 it all ways stumps me.

Mathematics

2 answers:

Nady [450]4 years ago

5 0

(lol) ....... but 8×8=64

qaws [65]4 years ago

4 0

Lets solve this step by step.

8 * 8 = 64

Lets suppose there are 8 aquariums and there are 8 fish in each. Therefore, there are 8 groups of 8 fish. Add and solve.

8+8+8+8+8+8+8+8 = 64

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What is the value of root 12+root 12+root12....<br> ...............to infinite

Effectus [21]

X=root(12+root(12+root(...)))
x^2=12+root(12+root(12+root(...)))
x^2=12+x
x^2-x-12=0
(x+3)(x-4)=0
X=4

7 0

4 years ago

Need to know these two problems

Arturiano [62]

Multiple 16 by 1 and then divide by 8 which makes 2.

Multiply 36 by 1 and then divide by 9 which makes 4.

5 0

3 years ago

Read 2 more answers

The difference of the squares of two positive consecutive even integers is 36. Find the integers. Use the fact that, if x repres

djyliett [7]

Hello from MrBillDoesMath!

Answer:

8 and 10

Discussion:

Let x and x+2 be as described in the Question. Then

(x+2)^2 - x^2 = 36 => (x+2)^2 = x^2 + 2x + 4

x^2 + 4x + 4 - x^2 =36 => the x^2 terms cancel

4x + 4 = 36 => subtract 4 from both sides

4x = 36 -4 - 32 => divide both sides by 4

x = 32/4 = 8

So the integers are 8 and 10 (8+2)

Check: 10^2 - 8^2 = 100 -64 - 36.

Thank you,

MrB

5 0

4 years ago

A standard number cube is rolled 288 times. Predict how many times a 3 or a 5 will be the result.

Anvisha [2.4K]

The events of rolling a 3 or a 5 are disjoint, so $\mathbb P\bigg((X=3)\cup(X=5)\bigg)=\mathbb P(X=3)+\mathbb P(X=5)$ .

Each face has a $\dfrac16$ probability of occurring, so the event of interest occurs with probability $\dfrac16+\dfrac16=\dfrac13$ . The number of times a 3 or 5 is rolled across 288 trials has a binomial distribution, $\mathcal B\left(288,\dfrac13\right)$ .

Recall that the expected value of a binomial distribution $\mathcal B(n,p)$ is $np$ . So in this experiment, we should expect to witness approximately $\dfrac{288}3=96$ instances of rolling a 3 or a 5.

5 0

3 years ago

Find the x and y intercepts for the equation 3x-2.5y = 30.

Dmitry_Shevchenko [17]

Answer: x-int = 10 and y-int = -12

Explanation:

Find x intercept:

To find x intercept set y = 0

3x - 2.5(0) = 30

3x = 30
x = 10

Find y-int:
Set x = 0

3(0) - 2.5y = 30
-2.5y = 30
y = 30/-2.5
y = -12

7 0

3 years ago

Read 2 more answers