Answer:
(-1, 5)
Step-by-step explanation:
3 [x + y = 4]
3x + 3y = 12
- 3x + 7y = 32
-4y = -20
y = 5
x + 5 = 4
x = -1
no because 7.909090 is greater than 7.9 so it would not make that a true statement.
In isosceles right triangle, legs are equal. Let each leg is of x units . And the given hypotenuse is 5 square 6. We use pythagorean identity here, which is
![a^2 + b^2 = c^2](https://tex.z-dn.net/?f=%20a%5E2%20%2B%20b%5E2%20%3D%20c%5E2%20)
Where a=b=x and c= 5 square root 6
![x^2 +x^2 =(5 \sqrt6)^2](https://tex.z-dn.net/?f=%20x%5E2%20%2Bx%5E2%20%3D%285%20%5Csqrt6%29%5E2%20)
![2x^2 = 150](https://tex.z-dn.net/?f=%202x%5E2%20%3D%20150%20)
![x^2 =75](https://tex.z-dn.net/?f=%20x%5E2%20%3D75%20)
![x= 5 \sqrt 3](https://tex.z-dn.net/?f=%20x%3D%205%20%5Csqrt%203%20)
And that's the length of both the legs . ANd that's the required answer .
Answer:
<h2>70 ft</h2>
Step-by-step explanation:
120 below we can use a model to figure this out.
sea level is 0
the submarine <u>goes 120 down</u>, so its -120
it <u>goes up by 50</u>, so now its <em>70</em>
no other obstacles, 70 or A is your answer.
We can times 5/2 and 9/2. And then divide that number with 21/2.
Then we can get 15/14.
We can subtract 15/14 from 11/2.
b=31/7