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SVETLANKA909090 [29]
3 years ago
15

Factorization of trinomial x2^ - 8x - 48

Mathematics
1 answer:
erastovalidia [21]3 years ago
7 0

x ^2 − 8 x − 48 = ( x + 4 ) ( x − 12 )

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WILL MARK AS BRAINLIEST FOR THESE QUESTIONS.
laiz [17]

1.

Let the sandwich be represented by = x

Let the drink be represented by = y

As given, Joe charges $10.00 for two sandwiches and one drink, so equation becomes 2x+y=10    ....(i)

He charges $6.50 for one sandwich and one drink, so equation becomes x+y=6.50  ....(ii)

Subtracting (ii) from (i) we get

x=3.50

And as x+y=6.50

y=6.50-3.50=3.00

Hence, cost of a sandwich is $3.50 and a drink is $3.00

2.

the question is incomplete. coordinates are missing

3.

Let x represent the number of performances

cost = 8000+300x

revenue = 700x

To break even, the cost must be equal to the revenue.

8000+300x=700x

400x=8000

so x=20

Hence, 20 performances are needed to break even.

4.

Let us take x for 20% material, y for 50% material

\frac{20x+50y}{200}=30

20x+50y=6000    ......... (1)

Accounting for volumes to use, x+y=200 or x=200-y ................ (2)

Putting the value of x in (1)

20(200-y)+50y=6000

4000-20y+50y=6000

4000+30y=6000

30y=2000

y=66.67

x=200-y = 200-66.67 =133.33

Hence, 133.33 ml of 20% acetic acid and 66.67% of 50% acetic acid is needed.





3 0
3 years ago
How many solutions does 5x-y=2 5x-y=-2 have?
alekssr [168]

Answer:

No Solution.

Step-by-step explanation:

5x-y=2

5x-y=-2

-------------

-(5x-y)=-2

5x-y=-2

----------------

-5x+y=-2

5x-y=-2

-------------

0=-4

no solution

7 0
3 years ago
If you invest $1,600 at 5.35% for 18 months how much simple interest is earned​
valentinak56 [21]

Answer:

Step-by-step explanation:

6 0
2 years ago
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Hellpppppppppppp...<br> '
Mars2501 [29]

Answer:

1 1/2

one and one half.

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Find the cost of a $19,500 car plus a 6% sales tax
Scrat [10]
There are 2 ways to do this...

19,500(1.06) = 20,670

or

19,500 + 0.06(19,500) = 19,500 + 1170 = 20670
8 0
3 years ago
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