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3 years ago

8

Find the missing value in the table.

1 answer:

dimulka [17.4K]3 years ago

7 0

Answer:

we're just multiplying X × 2 every time so (y=80)

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Four more than three times a number is thirteen. What is this number?

Ostrovityanka [42]

Answer:

3

Step-by-step explanation:

13-4=9

9/3=3

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2 years ago

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Determine whether the function below is an even function, an odd function, both, or neither.

kari74 [83]

All of the powers of x here are even, so the function f(x) is even. Note that 19 = 19x^0 = 19(1) = 19

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3 years ago

What is the solution for x^2 +14x +15

ololo11 [35]

...................................

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(10+7)+30=47 what property is that?

chubhunter [2.5K]

17+30=47
47=47
That is the associative property of addition

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3 years ago

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Factorize 2a^2+7a-15

loris [4]

$\huge\bf \pink {\underline{Solution :-}}$

$2 {a}^{2} + 7a - 15$

$= 2 {a}^{2} + 10a - 3a - 15$

$= 2a(a + 5) - 3(a + 5)$

$= (a + 5)(2a - 3)$

$\sf \red{Hence, Answer \: is \: (a + 5)(2a - 3).}$

$\\$

$\bf \purple{ \underline{ Important \: Formulas \: for \: Factorization :-}}$

$• \: {a}^{2} + 2ab + {b}^{2} = {(a + b)}^{2}$

$• \: (a + b)(a - b) = {a}^{2} - {b}^{2}$

$• \: {a}^{2} - 2 ab + {b}^{2} = {(a - b)}^{2}$

$• \: {a}^{3} + 3 {a}^{2} b + 3a {b}^{2} + {b}^{3} = {(a + b)}^{3}$

$• \: {a}^{3} - 3 {a}^{2} b + 3a {b}^{2} - {b}^{3} = {(a - b)}^{3}$

$• \: {(a + b)}^{2} + {(a - b)}^{2} = 2( {a}^{2} + {b}^{2} )$

$• \: {(a + b)}^{2} - {(a - b)}^{2} = 4ab$

$• \: (a + b)( {a}^{2} -ab + {b}^{2} ) = {a}^{3} + {b}^{3}$

$• \: (a - b)( {a}^{2} + ab + {b}^{2} ) = {a}^{3} - {b}^{3}$

$• \: {( \frac{a + b}{2} )}^{2} - ( {\frac{a - b}{2} } )^{2} = ab$

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3 years ago

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