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sleet_krkn [62]
3 years ago
14

If x-y=2 and y=-2/3, find x

Mathematics
2 answers:
Sphinxa [80]3 years ago
7 0

Answer:

Step-by-step explanation:

x - y = 2√3     given

-y = -x + 2√3  subtract x from both sides

y = x - 2√3     multiply both sides by -1

 

xy = 1                  given

x(x - 2√3) = 1      substitution

x2 - 2x√3 = 1       distribute

x2 - 2x√3 - 1 = 0  subtract 1 from both sides

 

Can you solve for x then y?

Katarina [22]3 years ago
6 0

Answer:

1 and 1/3

Step-by-step explanation:

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The school production of Our Town' was a big success. For opening night. 434 tickets were sold. Students paid $4.00 each, while
Alex73 [517]

Answer:

286 students attended

148 non students attended

Step-by-step explanation:

Given

Tickets = 434

Students = \$4.00

Non-Students = \$6.00

Total = \$2032.00

Solving (a): Number of students

Represent students with S and non students with N

So:

S + N = 434 --- (1)

4S + 6N = 2032 --- (2)

Make N the subject of formula in (1)

N = 434 - S

Substitute 434 - S for N in (2)

4S +6(434 - S) = 2032

Open Bracket

4S + 2604 - 6S = 2032

Collect Like Terms

4S - 6S = 2032 - 2604

-2S = -572

Divide through by -2

S = 286

<em>Hence; 286 students attended</em>

Solving (b):

Recall that

N = 434 - S

N = 434 - 286

N = 148

<em>148 non students attended</em>

4 0
3 years ago
A small business wants to meet the minimum medical loss ratio required. If projections show that the business will pay out an av
timama [110]

Answer:

$7120 or $7565 is the minimum average premium they should charge per policy holder

Step-by-step explanation:

Small business can charge 80-85% of the total value of the policy as premium.

In this case the spending per policy holder is $8900

Hence, per policy holder has to pay a premium of

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$7120 or $7565 is the minimum average premium they should charge per policy holder

5 0
2 years ago
What is the sum of the series?​
Natalija [7]

Answer:

44

Step-by-step explanation:

k=1: 2*1-4 = -2

k=2: 2*2²-4 = 4

k=3: 2*3²-4 = 14

k=4: 2*4²-4 = 28

-2 + 4 + 14 + 28 = 44

4 0
3 years ago
Read 2 more answers
Can you plz find the area of the parallelogram??
levacccp [35]
13.5·18=243
Base* Hight= Answer 

6 0
3 years ago
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Which inequality had the graph shown below?
prisoha [69]

Answer:

y < 2x -3

Step-by-step explanation:

7 0
3 years ago
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