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3 years ago

GIVING 20 POINTS AWAY PLEASE HELP ME WITH THIS QUESTION ASAP!!

Mathematics

1 answer:

Stolb23 [73]3 years ago

8 0

Answer:

D 144 in hope this helps you on your test

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Type the correct answer in each box. Find the elements of matrix A. help PLS!!

horsena [70]

Answer:

a = 2

b = 11

c = 11

d = -2

Step-by-step explanation:

$\sf \left[\begin{array}{cc}a&b\\c&d \end{array}\right] *\left[\begin{array}{ccc} 22&11&7\\ 6&-9&-15 \end{array}\right] =\left[\begin{array}{ccc} 22a+6b&11a-9b&7a-15b\\22c+6d&11c-9d&7c-15d \end{array}\right]$

$\sf \left[\begin{array}{ccc} 22a+6b&11a-9b&7a-15b\\22c+6d&11c-9d&7c-15d \\ \end{array}\right] =\left[\begin{array}{ccc} 110&-77&-151\\230&139&107 \\ \end{array}\right]$

On comparing to right side, we get,

22a + 6b = 110

Divide the entire equation by 2

11a + 3b = 55 ------------(I)

11a - 9b = -77 -------------(II)

Subtract equation (II) from (I)

11a + 3b = 55

11a - 9b = -77

- + + {Now subtract}

12b = 132

b = 132/12

$\sf \boxed{\bf \ b = 11}$

Substitute the value of b in eqaution (I)

11a + 3*11 = 55

11a + 33 = 55

11a = 55 - 33

11a = 22

a = 22/11

$\sf \boxed{\bf \ a = 2}$

22c + 6d = 230

Divide by 2

11c + 3d = 115 -----------------(III)

11c - 9d = -139 ------------------(IV)

Subtract (IV) from (III)

11c + 3d = 115

11c - 9d = 139

- + -

12d = -24

d = -24/12

$\sf \boxed{\bf \ d = -2}$

Plugin d = - 2 in equation (III)

11c + 3*(-2) = 115

11c - 6 = 115

11c = 115 + 6

11c = 121

c = 121/11

$\sf \boxed{\bf \ c = 11}$

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2 years ago

The figure below shows the ideal pattern of movement of a herd of cattle, with the arrows showing the movement of the handler as

jeyben [28]

The arc length in degrees (same as central angle that cuts it off) is to 360 (degrees in a circle) AS the arc length in linear measure is to the circumference of the circle (2 pi r).
90/360 = AL/[2 pi (85)] where AL is the arc length in linear measure.
1/4 = AL/[170 pi]
4 AL = 170 pi
AL = 42.5 pi
AL = 133.45 feet (approx)

I hope your satisfied with my answer in feel free to ask for more

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4 years ago

List the sides in order from shortest to longest. The diagram is not to scale. Triangle upper J upper K upper L is shown. Angle

aniked [119]

Answer:

your answer would be C

Step-by-step explanation:

line segment JK,Modifying above upper L upper J with bar, Modifying above Upper L Upper K with bar

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3 years ago

If you subtracted 3 from the exponent in an exponential function, what would happen to the graph? A) It would move up 3 B) It wo

kolezko [41]

Answer: The correct answer is D!

Step-by-step explanation:

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3 years ago

Read 2 more answers

(-2) with an exponent of four equals what

charle [14.2K]

The answer is 16 because (-2*-2*-2*-2= 16)

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3 years ago