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blsea [12.9K]
3 years ago
12

We did not recieve a diagram for this question.

Mathematics
1 answer:
Marta_Voda [28]3 years ago
8 0
If the line is tangent to circle at point A and the radius ( suppose AO) has a slope of 2.5 then a slope of the tangent line is :
\frac{-1}{2.5}= -0.4
Explanation: The product of slopes of two perpendicular lines is -1. To get second slope we have to divide -1 by the first one.
Answer:C) - 0.4
You might be interested in
A line segment has an end point of ( -4,-6) which reflection will produce an image with endpoints (-4, 6) and (-6,-4)
HACTEHA [7]
The given point is (-4, -6)

First reflected point is (-4, 6).
Note that the x coordinate is same and y coordinate has opposite sign. Above x-axis, y is positive and below x-axis y is negative. This shows that the reflection was across x-axis which resulted in the change of sign of y coordinate.

Second reflected point is (-6, -4)
Notice that in comparison to the original point, the location of x and y coordinate has been interchanged. This can only happen when the reflection is across the line y = x. The reflection of a graph across y = x also results in the inverse of that graph, with x values and y values interchanging their positions.

So,
1st Answer: Reflection across x-axis
2nd Answer: Reflection across the line y = x
4 0
3 years ago
Devang has a collection of dimes and nickels that total $1.10. He has a total of 15 coins. Which matrix can be used to represent
OLEGan [10]

AX  = b or  \left[\begin{array}{cc}1&1\\0.1&0.05\end{array}\right] \left[\begin{array}{c}x\\y\end{array}\right]  = \left[\begin{array}{c}15\\1.10\end{array}\right]

<h3>The above matrix can be used to determine the number of dimes  x and  nickels y.</h3>

Step-by-step explanation:

Here, total number of coins  = 15

Let us assume the number of dimes  = x

Also, let us assume the number of nickels  = y

So, x + y = 15  .... (1)

Again, 1 dime  = $0.1

So, x dimes  = x ($0.1)   = $ (0.1 x)

1 nickel  = $0.05

So, y nickels  = y ($0.05)   = $ (0.05 y)

Also, total value of coins  =  $1.10

⇒  0.1 x + 0.05 y  = 1.10     .... (2)

So, from (1) and (2) the matrix can be written as:

AX  = b or  \left[\begin{array}{cc}1&1\\0.1&0.05\end{array}\right] \left[\begin{array}{c}x\\y\end{array}\right]  = \left[\begin{array}{c}15\\1.10\end{array}\right]

The above matrix can be used to determine the number of dimes  x and  nickels y.

5 0
3 years ago
Hi, if it's possible to answer this now, Thank you so much. If you don't know the answer, that's ok :D
hram777 [196]

Answer:

5x4^10

Step-by-step explanation:

Hope this helps have a nice day :)

4 0
4 years ago
Read 2 more answers
What times what equals 39?
tigry1 [53]
13 times 3 equals 39. So 13 and 3 are the two numbers.
4 0
4 years ago
Read 2 more answers
X+2y-z=5<br> -X-y+2z=-13<br> 2x+y-2z=14
faltersainse [42]

Answer:

x+2y-z=5 ...(1)\\ -x-y+2z=-13...(2) \\ 2x+y-2z=14...(3) \\  \\ add \: (2) + (3) \\\boxed{x= 1} \\ 2 \times (1) + (2) \\ x + 3y =  - 3 \\ 1 + 3y =  - 3 \\ 3y =  - 4 \\ \boxed{y =  -  \frac{4}{3}  }\\ solve \: for \: z \\ x + 2y - z = 5  \\ 1-\frac{4}{3}(2)-z=5\\3-8-3z=15\\3z=-20\\\boxed{z = -   \frac{20}{3} }

3 0
3 years ago
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