Answer:
Step-by-step explanation:
discriminant=5²-4×1×7=25-28=-3<0
no real number solution.
Answer:
No solution
Step-by-step explanation:
3x + 6y =36
-3x - 6y =0
------------------add
0 ≠ 36
No solution
Answer:
![\displaystyle A .20](https://tex.z-dn.net/?f=%20%5Cdisplaystyle%20A%20.20)
Step-by-step explanation:
<u>By </u><u>tangent</u><u> </u><u>theorem</u><u> </u>we acquire:
![\displaystyle x + 10 = 9 + 21](https://tex.z-dn.net/?f=%20%5Cdisplaystyle%20%20x%20%2B%2010%20%3D%209%20%2B%2021)
simplify addition:
![\displaystyle x + 10 = 30](https://tex.z-dn.net/?f=%20%5Cdisplaystyle%20%20x%20%2B%2010%20%3D%2030)
cancel 10 from both sides:
![\displaystyle x = 20](https://tex.z-dn.net/?f=%20%5Cdisplaystyle%20%20x%20%3D%2020)
hence,
our answer is A
Answer:
57 inches
Step-by-step explanation:
The height, width, and diagonal of the TV screen form a right triangle.
Use the pythagorean theorem, a² + b² = c², and solve for c, the hypotenuse/diagonal of the TV.
a² + b² = c²
30² + 48² = c²
900 + 2304 = c²
3204 = c²
56.6 = c
Round this to the nearest inch:
56.6
= 57
So, the diagonal of the TV screen is 57 inches
X/3=1351/7
cross multiply
7x=4053
divide by seven on both sides
x=579