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3 years ago

Y= x2 - 2x - 19

Mathematics

1 answer:

azamat3 years ago

7 0

Answer:

(4, -6)

Step-by-step explanation:

y= x² - 2x - 19

y + 4x = 5

x² - 2x - 19 + 4x = 5

x² + 2x = 5 + 19

x² + 2x = 24

x² + 2x - 24

x² + 6x - 4x - 24

x(x + 6) - 4(x + 6)

(x - 4) (x + 6)

x = 4, x = -6

The pair of points representing the solution set of this system of equations is (-6, 29) and (4, -6)

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A shop recorded total sales of $2,000 on Monday. On Tuesday, its sales fell by 10%. On Wednesday, sales fell by another 20% comp

PIT_PIT [208]

Answer:

"Decrease of 60 dollars"

Step-by-step explanation:

Sales

Monday = 2000

Tuesday = 10% less = 2000*0.9 = 1800

Wednesday = 20% less = 1800 (0.8) = 1440

Thursday =

25% of Monday = 25% * 2000 = 500

Sales increased by 500 on Thursday compared to Wednesday. So Sales were:

1440 + 500 = 1940

So, compared to Monday (2000) , thursday's sales was $60 less

7 0

3 years ago

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Find the product. √5(2+√7) A)2√5+√35 B)√45 C)2√5+2√7 D)√10+√35

OverLord2011 [107]

Answer:

$\huge \boxed{2\sqrt{5} +\sqrt{35}}$

Step-by-step explanation:

$\sqrt{5} (2+\sqrt{7} )$

Expand brackets.

$\sqrt{5} (2)+\sqrt{5}(\sqrt{7} )$

$2\sqrt{5} +\sqrt{5} \sqrt{7}$

Apply radical rule : $\sqrt{a} \sqrt{b} =\sqrt{ab}$

$2\sqrt{5} +\sqrt{5 \times 7}$

$2\sqrt{5} +\sqrt{35}$

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3 years ago

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As Darius is skiing down a ski slope, Jorge is on the chairlift on the same slope. The chair lift has stopped. Darius stops dire

Jobisdone [24]

Answer:

0 chances.

2.3 seconds.

Step-by-step explanation:

25=-16t^2+35t+5

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3 years ago

What is the product of (2x2 + 5x - 3) and (3x +7)?

kicyunya [14]

Answer:

6x^3 + 29x^2 + 26x -21

Step-by-step explanation:

(2x^2 + 5x -3)(3x + 7) = 6x^3 + 14x^2 + 15x^2 + 35x - 9x -21

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3 years ago

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klio [65]

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4 years ago