Answer:
u = -10
Step-by-step explanation:
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Answer:
9.5 feet
Step-by-step explanation:
We have that,
Height of the point at the wall where the ladder is leaned = 9 feet
Horizontal distance between the ladder and wall = 3 feet.
So, we get the right triangle as shown in the figure.
Using 'Pythagoras Theorem', i.e.
, we get,
![x^{2}=9^{2}+3^{2}](https://tex.z-dn.net/?f=x%5E%7B2%7D%3D9%5E%7B2%7D%2B3%5E%7B2%7D)
i.e. ![x^{2}=81+9](https://tex.z-dn.net/?f=x%5E%7B2%7D%3D81%2B9)
i.e. ![x^{2}=90](https://tex.z-dn.net/?f=x%5E%7B2%7D%3D90)
i.e. x = 9.5 feet.
Thus, the length of the ladder must be 9.5 feet.
The answer is C. See the work below.
Answer:
(B)(negative 2) (4)
Step-by-step explanation:
The arrow on the number line ended at negative 8 (-8).
Given the options:
(A) (negative 3) (4) =(-3)(4)=-12
(B)(negative 2) (4) =(-2)(4)=-8
(C) (2)(4)=8
(D)(3)(4)=12
The expected product is -8 since that is where the arrow ended. Therefore, the product that is modeled by the number line is that which gives a result of -8. The correct option is B.
(B)(negative 2) (4) =(-2)(4)=-8