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olga_2 [115]
3 years ago
7

11 th grade algebra .

Mathematics
1 answer:
Ksju [112]3 years ago
7 0

Answer:

  C

Step-by-step explanation:

The inverse of a matrix is the transpose of the cofactor matrix, divided by the determinant. The determinant is (4)(3) -(1)(-5) = 17, eliminating choice B.

In a 2×2 matrix, the transpose of the cofactor matrix swaps the diagonal elements, and negates the off-diagonal elements. That is, the transpose of the cofactor matrix will look like the matrix of B. When that is divided by 17, you get the matrix of answer choice C.

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The equation of a line is y = mx + 2. What is the value of m (the slope) if the line passes through point A(−5, −18)?
Kitty [74]
We can input the point
remember that (x,y)
so we are given (-5,-18)
so when x=-5, y=-18
so

-18=-5m+2
minus 2 both sides
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divide both sides by -5
4=m
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answer is 2nd option
6 0
4 years ago
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frutty [35]

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3 years ago
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aleksandrvk [35]
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Read 2 more answers
What is the measure of the angle between the hour hand and the minute hand when it is 7:00 and 2:00
sergij07 [2.7K]

Answer:

150 degrees or 210 degrees

Step-by-step explanation:

A circle is equal to 360 degrees. The face of a clock is a circle and therefore 360 degrees. A clock is separated into 12 sections. Divide 360/ 12 = 30 degrees. This means each section is 30 degrees.

Between 2:00 and 7:00 clockwise, there are 5 sections. Since each section is 30 degrees, then 5*30 = 150 degrees.

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The angle depends on the direction of it.

3 0
3 years ago
.12 divided by 7.15 please put step by step thank you
wel

Answer:

59.58333

Step-by-step explanation:

715/12

write in long division format ( which u did )

divide 71 by 12 to get 5

multiply 71 by 12 = 5

subtract 60 by 71

bring down the next number

115/12 =9

multiply 12 by 9

subtract 180 by 115

add a decimal on the top and bring down zero

divide 70 by 12 = 5

multiply 5 by 12

subtract 60 - 70

bring down a zero

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multiply 12 by 8

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divide 40 by 12 = 3

anddd u get the point

sorry it took so long

5 0
3 years ago
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