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3 years ago

how many different lock combinations can be made using the digits 8, 2, 8 and 8 if the 2 is only used once in each combination?

Mathematics

1 answer:

alexandr402 [8]3 years ago

5 0

2,8,8,8

8,2,8,8

8,8,2,8

8,8,8,2

4 combinations.

Hope this helps!

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Divide (16x^6-12x^4+4x^2) by 4x^2

BabaBlast [244]

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3 years ago

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Please solve the following Factor. 9w2-49

romanna [79]

Answer:

(3w - 7)(3w + 7)

Step-by-step explanation:

The expression is a difference of squares and factors in general as

a² - b² = (a - b)(a + b)

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9w² - 49

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4 years ago

Simplify the expression. Assume that all variables are positive. Exponents in simplified form should all be

Rainbow [258]

Given:

The given expression is $\frac{7^{\frac{1}{2}} \cdot 7^{\frac{3}{2}}}{7^{-3}}$

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Exponents in simplified form:

Let us determine the exponent in simplified form.

Let us apply the exponent rule $\frac{x^{a}}{x^{b}}=x^{a-b}$

Thus, we have;

$7^{\frac{1}{2}+\frac{3}{2}-(-3)}$

Adding the fractions, we get;

$7^{\frac{4}{2}-(-3)}$

Cancelling the common terms, we have;

$7^{2-(-3)}$

Simplifying the exponent, we get;

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3 years ago

Which graph represents this system?

Vesnalui [34]

Step-by-step explanation:

Step 1: Find the correct option

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3 years ago

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Solve the problem.

skad [1K]

Answer:

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Step-by-step explanation:

Given:

$P = 0.62x^2 - 0.043x + 3$

To Find:

Time taken to reach 42,336 = ?

Solution:

According to the question x is the number of years after which the population .

Then

$42336 = 0.62x^2 - 0.043x + 3$

$0 = 0.62x^2 - 0.043x + 3- 42333$

$0.62x^2 - 0.043x -42333$ = 0

Solving using quadratic formula

$x =\frac{ -b\pm \sqrt{b^2 -4ac}}{2a}$

$x =\frac{ -(-0.043)\pm \sqrt{(-0.043) -4(0.62)(42333)}}{2(42333)}$

$x =\frac{ -(-0.043)\pm \sqrt{(0.001849) -0.10664}}{84666}$

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Neglecting the negative value we get

x = 261.337

x = 261 approx

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4 years ago

how many different lock combinations can be made using the digits 8, 2, 8 and 8 if the 2 is only used once in each combination?​

how many different lock combinations can be made using the digits 8, 2, 8 and 8 if the 2 is only used once in each combination?