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3 years ago

PLEASE HELP ME 20 PTS

Mathematics

2 answers:

Sunny_sXe [5.5K]3 years ago

7 0

Answer:

Step-by-step explanation:

edge2021, got a 100 on pre-test

podryga [215]3 years ago

6 0

Answer:

The answer is C

Sn=3(1-1/2^n)

Step-by-step explanation:

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What is y=-2/5x in standard form

VikaD [51]

Standard form is x + y = number.

y = -2/5 x

y + 2/5 x = 0

2/5 x + y = 0

In standard form, the coefficient of x or y cannot be a fraction.

Therefore we have to multiply the whole equation by 5.

2x + 5y = 0

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3 years ago

Solve for m.

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Step-by-step explanation:

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3 years ago

What

NNADVOKAT [17]

The answer is -130. hope this helps.

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Simplify this equation Thanks a lot!!!

den301095 [7]

Answer:

-1

Step-by-step explanation:

We need to simplify the given expression . The given expression is ,

$\rm\implies ( 2 \sqrt6 +5)^{2n-1} ( 2\sqrt6 - 5)^{2n-1}$

Here we can see that the power of the both exponent is same that is (2n+1) . Recall the property of exponents ,

$\bf\implies a^m \times b^m = (ab)^m$

Using this property , we have ,

$\rm\implies ( 2 \sqrt6 +5)^{2n-1} ( 2\sqrt6 - 5)^{2n-1}$

This can be written as ,

$\rm\implies\{( 2 \sqrt6 +5) ( 2\sqrt6 - 5)\}^{2n-1}$

Simplifying using ( a+b)(a-b) = a² - b² ,

$\rm\implies\{( 2 \sqrt6)^2 -5^2 \}^{2n-1}\\\\\rm\implies ( 24 - 25)^{2n-1}$

Subtracting the numbers inside the brackets ,

$\rm\implies (-1)^{2n - 1 }$

Now we know that every odd number is in the form of 2n -1 , where n is any integer. Therefore , the power is odd .

Since the base is (-1) , for even power it is 1 and for odd power it is -1 . Therefore the final answer is ,

$\rm\implies\boxed{\quad \red{ -1 }\quad }$

Hence the required answer is (-1) .

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3 years ago

Write a fact with the same sum as 7+5

kozerog [31]

6+6
8+4
9+3
10+2
11+1
Hope this helps!

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