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Nadusha1986 [10]
3 years ago
7

Find the distance between points (3,-5) and (-2, -1) on the co-ordinate plane. Write the answer to the hundredth.

Mathematics
1 answer:
blondinia [14]3 years ago
5 0
Distance: sqr(x2-x1)^2 + (y2-x1)^2
Sqr (-2-3)^2 + (-1+5)^2
Sqr (-1)^2 + (4)^2
Sqr 1 + 16
Sqr 17 = 4.12
The distance is 4.12
(Check my work)
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Write the inverse function for the function, ƒ(x) =1/2x + 4. Then, find the value of ƒ^ -1(4). Type your answers in the box.
Kipish [7]

Answer:

f⁻¹(x) = 2x - 8

f⁻¹(4) = 2 × 4 - 8

f⁻¹(4) = 0

Step-by-step explanation:

f(x) = \frac{1}{2} x + 4\\x = \frac{1}{2} f^{-1}(x) + 4\\x - 4 = \frac{1}{2} f^{-1}(x)\\2x - 8 = f^{-1}(x)\\f^{-1}(x) = 2x - 8

Let's test it

f^{-1}(f(x)) = 2(f(x)) - 8\\f^{-1}(f(x)) = 2( \frac{1}{2}x + 4) - 8\\f^{-1}(f(x)) = \frac{2}{2}x + 8 - 8\\f^{-1}(f(x)) = x

So we do indeed have the inverse function, so using that we can plug in the values requested:

f⁻¹(x) = 2x - 8

f⁻¹(4) = 2 × 4 - 8

f⁻¹(4) = 0

4 0
3 years ago
Please help I really really really need assistance through any means!
Georgia [21]
So make a square and then you an answer from (0,1) to (4,3) the slope is 1/2 in simplest form, but for a more accurate answer a calculator. 
8 0
4 years ago
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A triangular flag has an area of 444 square meters and a height of 74 meters. What is the length of the base
Serjik [45]
Yes because 74*12 is 888 and because it is a triangular flag, the area would be 444.
5 0
4 years ago
Fill in the table of values for the equation y = x + 2​
sweet [91]

Answer:

-3

2

5

Step-by-step explanation:

3 0
3 years ago
Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the corre
kvasek [131]

Answer:

h=\frac{V}{\pi r^2}

Step-by-step explanation:

To write this equation with h isolated, we cancel everything else on the right hand side of the equals sign.  This means we cancel π and r².

Since both of these are attached to h by multiplication, we divide by both to cancel.  We can divide by both at the same time:

\frac{V}{\pi r^2}=\frac{\pi r^2h}{\pi r^2}\\\\\frac{V}{\pi r^2}=h

7 0
3 years ago
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