1) x - 2y = 5, x² - y² = 8 2) x - y = 0, x² + xy - y² = 4

3) 3x + 4y = - 5, 2x² - xy + 5y² = 26

Pls it is simultaneous equations

step-by-step explanation:

first, eliminate the parenthesis:

3

x

+

2

−

4

x

second, group like terms:

3

x

−

4

x

+

2

third, combine like terms:

(

3

−

4

)

x

+

2

→

−

1

x

+

2

→

−

x

+

2

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%

the answer is 31.27mph

range is infinite on both x and y axis positive and negative

step-by-step explanation: