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Alexus [3.1K]
2 years ago
8

Find the inverse matrix or type

Mathematics
1 answer:
Nataly [62]2 years ago
5 0

Answer:

I don't know if you mean [3,-1] & [-5,3] or \left[\begin{array}{ccc}3&-1\\-5&3\end{array}\right]

The inverse for first ones are "none" because they're not square matrices.

However the inverse for \left[\begin{array}{ccc}3&-1\\-5&3\end{array}\right]  is  \left[\begin{array}{ccc}0.75&0.25\\1.25&0.75\end{array}\right].

Hope this helps.

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meteroloogist track severe stoms using Doppler radar. A polar grid is used to measure distances as the storms progress. If the c
FinnZ [79.3K]

Answer:

$(x-h)^2+(y-k)^2= (r+ 40 )^2$  

Step-by-step explanation:

It is given that a meteorologist is using a Doppler radar to find out the distance of the storm as it passes using a polar grid.

The origin of the radar screen is its center.

And the distance between each ring is 10 miles from the center.

So let :

r = radius

h and k = be the coordinates of the center.

So the equation of a circle is :

$(x-h)^2+(y-k)^2= r^2 $

Now the equation of the fourth circle when the radius changes by 10 miles is :

$(x-h)^2+(y-k)^2= (r+ 40 )^2$  

5 0
3 years ago
If a(x) = 2x - 4 and b(x) = x + 2, which of the following expressions produces a quadratic function
Rina8888 [55]

Answer:

Step-by-step explanation:

Multiplying a(x) and b(x) together results in a quadratic equation (a trinomial).  This trinomial looks like (a·b)(x) = (2)(x - 2)(x + 2).  Note that this is a "special product;"  (2)(x^2 - 4); there is no middle term.

7 0
3 years ago
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A shoe store uses 50% markup for all of the shoes it sells. What would be the selling price of a pair of shoes that has a wholes
Stels [109]

57 + 57/2 = 57 + 28.5 = 85.5

4 0
3 years ago
How do you know if when he sees you for the first time than he likes you?
Tamiku [17]

Answer:

BRUH

Step-by-step explanation:

BRUH

6 0
3 years ago
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BRAINLIEST TO FIRST CORRECT ANSWER!!
sineoko [7]

Answer:

57\:\mathrm{km}

Step-by-step explanation:

Since the question implies his truck travels at a constant distance per gallon, we can set up the following proportion to find how much father his truck can go.

Let x represent how much farther his truck can go, in kilometers:

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Cross-multiplying, we get:

2x=76\cdot 1.5,\\x=\frac{76\cdot 1.5}{2}=\boxed{57\:\mathrm{km}}

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2 years ago
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