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aksik [14]
3 years ago
7

Please help and show work

Mathematics
1 answer:
PSYCHO15rus [73]3 years ago
6 0
Multiply 5x8 then cut it in half and thats your answer
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what is the equation of the quadratic function that passes through the points (0,-1),(1,0),and (2,-3)
Alexus [3.1K]

Answer:

-2x^2 + 3x -1

Step-by-step explanation:

y = ax^2 + bx + c

(0,-1):  

-1 = a(0)^2 + b(0) + c

-1 = 0 + 0 + c

-1 = c

(1,0):

0 = a(1)^2 + b(1) + c

0 = a + b + c

(2,-3):

-3 = a(2)^2 + b(2) + c

-3 = 4a + 2b + c

Replace c with -1

0 = a + b -1

1 = a + b

-3 = 4a + 2b -1

-2 = 4a + 2b

-1 = 2a + b

Solve:

2a + b = -1

-1a - b = -1

a = -2

2a + b = -1

-2a -2b = -2

-b = -3 divide both by -1:  b = 3

a = -2; b = 3; c = -1

y = ax^2 + bx + c or y = -2x^2 +3x -1

6 0
3 years ago
What is The exact value of 5.3 million × 2.7 thousand
ipn [44]
Fourteen billion three hundred ten million
6 0
3 years ago
A 13-foot ladder is leaning against a building, forming a right triangle. The height where the ladder touches the building is se
Sonja [21]

Answer:

20 feet

Step-by-step explanation:

13 foot ladder + 7 feet more = 20 feet

3 0
3 years ago
Use a graphing calculator to determine the solution of<br> 1-2x - y = 2<br> 13x + 2y=1
Arte-miy333 [17]
The first one is 2x+y=-1

the second one is 13x+2y-1=0
6 0
3 years ago
5). Jonathan bought a new jacket. The jacket originally cost $79.95 but is on sale for 20% off. How much
Harlamova29_29 [7]
Answer:c
Explanation: well 79.95-20%=63.96
5 0
2 years ago
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