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Svetllana [295]
3 years ago
5

What is the value of 9^-1/2

Mathematics
2 answers:
qaws [65]3 years ago
7 0

Answer:

81-1/2

80/2

40 and right than say

Elden [556K]3 years ago
3 0

Answer:

\frac{1}{3}

Step-by-step explanation:

Using the rule of exponents/ radicals

a^{-m} ⇔ \frac{1}{a^{m} }

a^{\frac{1}{2} } ⇔ \sqrt{a}

Given

9^{-\frac{1}{2} }

= \frac{1}{9^{\frac{1}{2} } }

= \frac{1}{\sqrt{9} }

= \frac{1}{3}

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A football thrown by a quarterback follows a path given by hx=-0.0095x2+x+7, where h is the height of the ball in feet and x is
Wewaii [24]

Answer:

The ball can be knocked down at a horizontal distance of 3.09 feet or 102.17 feet from the marshal.

Step-by-step explanation:

We have the function that represents the height h (x) of the ball h(x) = -0.0095x^2 + x + 7

Where x is the horizontal distance of the ball.

We want to find the horizontal distance the ball is at (horizontal distance between the field marshal and the ball) when it is at a height of 10 feet.

To do this, we must do h (x) = 10

10 = -0.0095x^2 + x + 7\\0 = -0.0095x^2 + x -3

Now we must solve the second degree equation. For this we use the formula of the resolvent:

\frac{-b + \sqrt{b ^ 2 - 4 * a * c}}{2a}

       and

\frac{-b - \sqrt{b ^ 2 - 4 * a * c}}{2a}


\frac{-1 + \sqrt{1 ^ 2 - 4 * (- 0.0095)(-3)}} {2 (-0.0095)} = 3.09 ft

  and

\frac{-1 - \sqrt{1 ^ 2 - 4 * (- 0.0095)(-3)}} {2 (-0.0095)} = 102.17ft


Then, the ball can be knocked down at a horizontal distance of 3.09 feet or 102.17 feet from the marshal.

7 0
3 years ago
Sami is 5 feet and 8 inches and his little sister is 4 feet and 11 inches. How many inches taller is Sami than his sister?
Ierofanga [76]

Sami is 9 inches taller than his sister

Hope this helps.

8 0
3 years ago
Help please its for a test​
shutvik [7]

Answer:

x=-15

Step-by-step explanation:

x+70=55° (bcz a || b)

x=55-70

x=-15°

Hope u like it

<em>PLZ</em><em> </em><em>MARK</em><em> </em><em>ME</em><em> </em><em>AS</em><em> </em><em>BRAINLIEST</em><em> </em><em />

6 0
4 years ago
What is m A)96<br> B)48<br> C)55<br> D)110
topjm [15]
The answer is B.. i dont actually know im just guessing
8 0
3 years ago
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4. A TV has a screen that is 15 in. long and has a 25 in. long diagonal. Find
yaroslaw [1]

Answer:’

Step-by-step explanation:

6 0
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