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bekas [8.4K]
3 years ago
15

Solve the simultaneous equation: x-y=2

Mathematics
1 answer:
kakasveta [241]3 years ago
5 0

Answer:

Y= –7.08, 5.08

Step-by-step explanation:

hope ya ready bro.

X=36/Y

replace 36/y instead of X

36/Y–Y=2===> 36–Y²=2Y===> Y²+2Y–36=0

Y1= –1+√37≈ –7.08

Y2= –1–√37≈ 5.08

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At the city museum, child admission is $5.40 and adult admission is $9.10. On Monday, three times as many adult tickets as child
denis23 [38]

Answer: 33 child tickets that were sold.

Step-by-step explanation:

Let x represent the number of child tickets that were sold.

Let y represent the number of adult tickets that were sold.

At the city museum, child admission is $5.40 and adult admission is $9.10. A total sales of $1079.10 was made on Monday. This means that

5.4x + 9.1y = 1079.1 - - - - - - - - - -1

On Monday, three times as many adult tickets as child tickets were sold. This means that

y = 3x

Substituting y = 3x into equation 1, it becomes

5.4x + 9.1 × 3x = 1079.1

5.4x + 27.3x = 1079.1

32.7x = 1079.1

x = 1079.1/32.7

x = 33

y = 3x = 3 × 33

y = 99

3 0
3 years ago
Emily purchased lemons for $600. She sold 3/4 of these at a loss of 20% and the remaining at a gain of 20%. How much percent doe
MAVERICK [17]

Answer:

10%

Step-by-step explanation:

Given: CP of lemon is $600.

           3/4 of lemon sold at 20% loss

           Remaining lemon at 20% gain.

Considering the quantity of lemon remain constant.

Cost price of 3/4 of lemon= \frac{3}{4} \times 600= \$450

As given, 3/4 of lemon sold at 20% loss.

∴ Selling price of \frac{3}{4}\ of\ lemon=  450- \frac{20}{100}\times 450

Selling price= 450- 90= \$ 360

Hence, selling price of 3/4 lemon is $360.

Now, the cost price of remaining lemon (1-\frac{3}{4} )= (\$ 600-\$ 450)

∴ The cost price of \frac{1}{4}\ lemon = \$ 150

As given, remaining \frac{1}{4} lemon\ sold\ at\ gain\ of\ 20\%

∴ Selling price of \frac{1}{4} \ lemon= (150\times \frac{20}{100}+150)

Selling price of \frac{1}{4} \ of\ lemon= (30+150)

Hence, selling price of 1/4 lemon is $180

Loss\profit percent= \frac{(SP-CP)}{CP} \times 100

∴ Loss\profit percent= \frac{60}{600} \times 100= 10\%

Hence, the loss percentage is 10%

8 0
3 years ago
BEST ONE GETS ALL THE POINTS QUICK!!!!!!!!!!
Nastasia [14]

Answer:whats the question?

Step-by-step explanation:

7 0
3 years ago
Car Acosts $10 36 per 100 miles to drive, while car B costs $6.64 per 100 miles to drive How much more would car A cost to drive
Ulleksa [173]

Answer:

$21.58 or $21.576

Step-by-step explanation:

580 ÷ 100 = 5.8

$10.36 × 5.8 = $60.088

$6.64 × 5.8 = 33.512

60... - 33... = $21.576

4 0
3 years ago
Read 2 more answers
2,000,000 mg = how many kg?
cluponka [151]
1kg=1,000g\\1g=1,000mg\\\\therefore\\1kg=1,000\times1,000mg=1,000,000mg\to1mg=\frac{1}{1,000,000}kg\\\\2,000,000mg=\frac{2,000,000}{1,000,000}kg=\boxed{2kg}
8 0
3 years ago
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