Ask question

Ask question

All categories

andrey2020 [161]

3 years ago

15

Please help me!!!!!!!!!!!!!!!!!!!!!!!!

1 answer:

Reika [66]3 years ago

8 0

Which # is it that u need help on or is it the whole thing

You might be interested in

9. One winter day, the temperature increased

Andru [333]

Answer: A~ 45

Step-by-step explanation:

8 0

3 years ago

A new car is purchased for 19900 dollars. The value of the car depreciates at 7.5% per year. What will be the value of the car a

bogdanovich [222]

Answer:

$10665,64

Step-by-step explanation:

S=19900*(1-(7,5/100))^8=10665, 64

6 0

3 years ago

Read 2 more answers

Expand: -3(x – y + 5)

HACTEHA [7]

Answer:

-3x+3y-15

Step-by-step explanation:

;)

5 0

3 years ago

Read 2 more answers

A garden in the shape of trapezoid has an area of 44.4 square meters. One base is 4.3 meters long and the other base is 10.5 met

mamaluj [8]

Answer:

22.5 1/2

Step-by-step explanation:

4 0

4 years ago

Factorize 2a^2+7a-15

loris [4]

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

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

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

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

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

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

$\\$

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

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

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

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

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

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

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

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

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

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

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

5 0

3 years ago

Read 2 more answers