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3 years ago

Solve (2x^2+3x−5) (−4x^3+5x+2) step by step . (Marking Brainliest) ;)

Mathematics

1 answer:

bixtya [17]3 years ago

6 0

-8x⁵-12x⁴+30x³+19x²-4x-10

Step-by-step explanation:

-8x⁵+10x³+4x²-12x⁴+15x²+6x+20x³-10x-10..simplify

-8x⁵-12x⁴+10x³+20x³+4x²+15x²+6x-10x-10... like terms

-8x⁵-12x⁴+30x³+19x²-4x-10.. this is the final answer we can't add this anymore cause they ain't like terms the last form is this one.

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A bag contains 8 black beads and 4 white beads. If 2 beads are drawn at random, what is the probability that both beads are blac

maria [59]

Answer:

14/33

Step-by-step explanation:

The total amount of beads is 8+4 = 12. 8 of these are black beads, so that is what we want, so 8/12 or 2/3. For the second one, one black bead is already taken so 8-1 = 7 are left and for the total 12 - 1 = 11 are left, so 7/11. Multiply this by 2/3 and we get 14/33.

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3 years ago

Solve for m in V = 3x + 2m - y.

jok3333 [9.3K]

Answer:

$\large\boxed{m=\dfrac{V+y-3x}{2}}$

Step-by-step explanation:

$3x+2m-y=V\qquad\text{add}\ y\ \text{to both sides}\\\\3x+2m-y+y=V+y\\\\3x+2m=V+y\qquad\text{subtract}\ 3x\ \text{From both sides}\\\\3x-3x+2m=V+y-3x\\\\2m=V+y-3x\qquad\text{divide both sides by 2}\\\\\dfrac{2m}{2}=\dfrac{V+y-3x}{2}\\\\m=\dfrac{V+y-3x}{2}$

8 0

3 years ago

What is the value of X?

LenKa [72]

Answer:

5.625 or 5-5/8 or 45/8

Step-by-step explanation:

Solve using Similar triangles again

ratio of 4:7.5

3/x=4/7.5 cross multiply

22.5=4x

x=22.5/4=5.625=5-5/8=45/8

7 0

2 years ago

Evaluate the following expression for m= 8 and p= -12 M^2-|p| 76 52 -52 -76

masha68 [24]

Answer:

Step-by-step explanation:

Put the numbers in the expression and do the arithmetic.

(-8)² - |-12| = 64 -12 = 52

3 0

3 years ago

What is the percent change of 7 increased to 21

timurjin [86]

Answer:

300%

Step-by-step explanation:

21/7=3 This means that 21 is 3 times more than 7.

4 0

2 years ago