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Tom [10]
3 years ago
9

Which expression is undefined ?

Mathematics
1 answer:
satela [25.4K]3 years ago
7 0

Answer:

A

Step-by-step explanation:

8/(-2+2) is just 8/0 and anything divided by 0 is undefined

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If an object takes 7 second to fall to the ground, what was its initial height? Show your work.
Verdich [7]

Answer:240.1 m

Step-by-step explanation:

We are given the following equation that models the the time it takes to an object to fall to the ground:

t_{(H)}=\sqrt{\frac{2H}{g}}

Where:

t_{(H)}=7 s is the time it takes to the object to fall to the ground

H is the object's initial height

g=9.8 m/s^{2} is the acceleration due gravity

Isolating H:

t^{2}=(\sqrt{\frac{2H}{g}})^{2}

t^{2}=\frac{2H}{g}}

H=\frac{t^{2}g}{2}

Solving with the given data:

H=\frac{(7 s)^{2}(9.8 m/s^{2})}{2}

H=240.1 m This is the initial height

8 0
3 years ago
In the diagram below, PA= <br>4, AB=2, and PC=3. Find<br>the length of PD.<br><br>​
Diano4ka-milaya [45]

Answer:

PD = 8

Step-by-step explanation:

PC x PD = PA x PB

3 x PD = 4 x (4 + 2)

3PD = 24

PD = 8

3 0
3 years ago
is 3x+4y=12 linear or nonlinear......is y=1/2x+6 linear or nonlinear......is y=4x to the power of 2 linear or nonlinear......is
Ilya [14]

3x+4y=12 is Linear.

y-1/2x+6 is Linear.

y=4x^2 is nonlinear.

y+2=|4| is linear.

y+6=4x is linear.

In order to tell whether an equation is linear or not, you have to first see if there is any variable^2 or more than ^1. If that is the case, it isn't linear. For example the equation x^2=4 or y^5=100 isn't linear. It also isn't linear if the equation is divided by X or Y.For example the equation 1/x=1 isn't linear or 1/y^2=5 isn't linear.

A question is also linear if you can write it in the form y=mx+b , 'm' meaning the slope of the equation and 'b' meaning the y-intercept of the equation.

3 0
4 years ago
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Find 2/5 divided 1/8 simplest form
Mekhanik [1.2K]

Answer: 3.2

Step-by-step explanation: (2/5)/(1/8)=(2/5)*8= 16/5=3 1/5=3.2

8 0
3 years ago
If 2+2 is 4 so what is 4 made up of?
Romashka [77]

The 4 is made up of the 2

4 0
3 years ago
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