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2 years ago

On a test, Marcus answered 12 out of the first 15 problems correctly. If this rate continues

Mathematics

1 answer:

Deffense [45]2 years ago

6 0

Answer:

Step-by-step explanation:

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Given that the product of 22 integers is equal to 1, prove that their sum is not equal to 0.

Kay [80]

1. If the product of these integers is to be 1, then all of them must be either 1 or -1.

2. Since the product is positive (+1), it must be that there are an *even* number of negative ones (-1), if any.

3. If the sum were 0 it would mean that the number of +1's must equal the number of -1's. So that means there would have to be exactly 22/2=11 of each.

4. But if there were 11 of each, that means the number of -1's would be *odd* and there's no way the product could be +1 (as stated in 2 above).

Hence, the sum is never 0, if the product of 22 integers is equal +1.

4 0

3 years ago

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PLEASEE HELP ASAPPPP!<br> x9/x4 <br> PLEASSEEEEEEEE

Semmy [17]

Answer:

x^5

Step-by-step explanation

If this is dividing exponents, you just subtract the denominator from the numerator.

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3 years ago

What is the true solution In 20+In 5=2 In x?

S_A_V [24]

Answer:

x = 10

Step-by-step explanation:

Using the rules of logarithms

• log x + log y ⇔ log(xy)

• log $x^{n}$ ⇔ n log x

• log x = log y ⇒ x = y

Given

ln20 + ln5 = 2 lnx , then

ln(20 × 5) = ln $x^{2}$

ln 100 = ln $x^{2}$ , hence

x² = 100 ( take the square root of both sides )

x = 10

7 0

3 years ago

Derivation of f(x) = x^4 - 8x^2 + 3

weeeeeb [17]

The answer is F(0)=-3

7 0

3 years ago

Which names are correct for FM−→− ?

fiasKO [112]

Answer with explanation:

⇒A segment , $\Bar {AB}$ is equivalent to $\Bar {BA}$ .

⇒We can assert this by this way, if Distance between Two points A and B is 6 unit, then Distance between B and A will be 6 unit also.

So,

$\bar{FM}=\bar{MF}$

FM−→−⇒MF−→−

Option A

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3 years ago

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