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3 years ago

2 2-1-1-1 whats is the answer

Mathematics

1 answer:

schepotkina [342]3 years ago

3 0

2-1=1-1=0-1=-1 is the first 2 part of the eqation too then it will be 2-2=0-1=-1-1=-2-1=-3
-3

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50 is 40% of what number

DENIUS [597]

50 / 0.40 = 125

To check your answer, 125 * 0.4 = 50

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3 years ago

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40 times something = 3600<br>what's the other number<br><br>

sammy [17]

Answer:

Step-by-step explanation:

3600 / 40 = 90

90 x 40 = 3600

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3 years ago

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What is the binomial expansion of (x + 2y)7?

borishaifa [10]

<h2>Thus, the required "option 4)" is correct.</h2>

Step-by-step explanation:

We find,

$(x+2y)^7$

To find, the binomial expansion of of $(x+2y)^7$ = ?

We know that,

$(x+y)^{n} =^nC_0x^n+^nC_1x^{n-1}y+nC_2x^{n-2}y^2+nC_3x^{n-3}y^3+...+^nC_ny^n$

∴ $(x+2y)^7$

Here, n = 7, x = x and y = 2y

$(x+2y)^7$ = $^7C_0x^7+^7C_1x^{7-1}(2y)+^7C_2x^{7-2}(2y)^2+^7C_3x^{7-3}(2y)^3+^7C_4x^{7-4}(2y)^4+^7C_5x^{7-5}(2y)^5+^7C_6x(2y)^6+(2y)^7$ $=x^7+7x^{6(2y)+21x^{5}4y^2+35x^{4}8y^3+^35x^{3}16y^4+21x^{2}32y^5+7x64y^6+128y^7$

$=x^7+14x^{6}y+84x^{5}y^2+280x^{4}y^3+560x^{3}y^4+672x^{2}y^5+448xy^6+128y^7$

∴ The binomial expansion of of $(x+2y)^7$

$=x^7+14x^{6}y+84x^{5}y^2+280x^{4}y^3+560x^{3}y^4+672x^{2}y^5+448xy^6+128y^7$

Thus, the required "option 4)" is correct.

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3 years ago

Marta’s math textbook weighs Four-fifths of a pound less than 4 times the weight of the book she is reading for her language art

aleksley [76]

Answer:The answer is 2 and 1/5 = 4x - 4/5 = 3/4 pound.

So your answer would be C

Step-by-step explanation:

Hope this helps ツ

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3 years ago

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I need help doing what’s in the pictureee plz help I need help like NOW

Dima020 [189]

Answer:

4 x 10∧-6

Step-by-step explanation:

You divide the normal numbers normally. Then, you subtract the exponents. Leave the base (in this case 10) alone.

5 0

3 years ago