What was the resulting equation ?

Mathematics

1 answer:

zaharov [31]3 years ago

8 0

From the first equation we get y = 2x. Subbing this into the second equation, we get:

x^2 (2x)^2
------ - --------- = 1, or
25 49

x^2 4x^2
------ - --------- = 1
25 49

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Find x please help thank you

Angelina_Jolie [31]

Answer: x=(7√6)/2

Step-by-step explanation:

To find x, we would have to find the hypotenuse of the 45-45-90 triangle. First, we would have to find the hypotenuse by using the 30-60-90 triangle on top to find it.

For a 30-60-90 triangle, the hypotenuse is 2x in length. the x is the same in all sides. All you would have to do is to plug it in. The leg opposite of 60° is x√3 in length. the leg opposite of 30° is x in length.

Since we know that 7 is opposite of the 30° angle, we know that x is 7. Across fron 60° is the hypotenuse of the 45-45-90 triangle. That leg is x√3. We plug in x=7 and get 7√3.

The hypotenuse of the 45-45-90 triangle is x√2 and the legs are both x. We can set 7√3 equal to x√2 to find x of the missing side.

7√3=x√2 [divide both sides by √2]

x=(7√6)/2

Now, we know x=(7√6)/2.

8 0

3 years ago

After a discount of 5% the sales price of a game system is $106.78 what is the original price

Mrac [35]

106.78/.05=2135.6
21356*.05=106.78

4 0

3 years ago

What is the area of triangle DEF?