2 years ago

Solving each system by elimination -9x+y=11 -8x-y=6

Mathematics

1 answer:

Anestetic [448]2 years ago

5 0

Y=20x

y=14x there is your answer , you must have the y by itself always!

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Y/-7 = 1/14<br> y = ?<br> pls answer as a reduced fraction.

mote1985 [20]

Answer:

y = -1/2

Step-by-step explanation:

−7⋅

8 0

2 years ago

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The sum of the ages of Mr Lin and his son Ethan is 38 years. In three years' time, Mr Lin will be three times as old as his son.

Sati [7]

Answer:

Mr.Lin's present age is 30 years now. His son is 8 years old now.

Step-by-step explanation:

Let L = Mr.Lin's present age,

S = his son's present age.

First equation is

L + S = 38. (1)

The second equation is

L + 3 = 3*(S+3) (2) ("In three years' time, Mr.Lin will be three times as old as his son.")

From (1), express S = 38-L and substitute it into (2). You will get

L + 3 = 3*((38-L)+3), or

L + 3 = 114 - 3L + 9,

4L = 114 + 9 - 3,

4L = 120,

L = 30.

8 0

3 years ago

Pls help i keep getting it wrong.

Oksanka [162]

Did yhu do 5 and 8 ?

3 0

2 years ago

What is 6x^3+20x^2+15x+3 divided by 3x+1

torisob [31]

Answer:

2x^2+6x+3

Step-by-step explanation:

answer : 2x^2+6x+3

3 0

2 years ago

Examine the right triangle. A right triangle with side lengths 17 centimeters and 48 centimeters. The hypotenuse is unknown. Wha

Dimas [21]

Answer:

The answer to your question is c = $\sqrt{2593}$

Step-by-step explanation:

Data

right triangle

short leg = 17 cm

long leg = 48 cm

hypotenuse = ?

Process

-Use the Pythagorean theorem to find the answer

c² = a² + b²

c = hypotenuse

a = short leg = 17 cm

b = long leg = 48 cm

- Substitution

c² = 17² + 48²

-Simplification

c² = 289 + 2304

c² = 2593

-Result

c = $\sqrt{2593}$

5 0

2 years ago

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