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MAXImum [283]
3 years ago
11

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:

<u>Sales</u>

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
Read 2 more answers
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}

7 0
3 years ago
Read 2 more answers
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

0=-16t^2+35t+5

4 0
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

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

8 0
3 years ago
PLEASE Help!
klio [65]
<span>Two triangles are congruent if they have: exactly the same three sides and; exactly the same three angles. the information above is not sufficient for telling there are congruent triagles
so the possible answer is </span>
<span>-none of the triangles </span>
8 0
4 years ago
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