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Vikentia [17]
3 years ago
9

Find the determinant: - 4 5 7 3

Mathematics
1 answer:
RUDIKE [14]3 years ago
8 0

Answer:

-47

Step-by-step explanation:

To get the determinant of a 2x2 matrix,

Step 1: Multiply the top left and bottom right numbers

Step 2: Subtract it by the top right number times the bottom left number

(-4*3)-(7*5)

=-12-35

=-47

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motikmotik

Answer:

x=3

Step-by-step explanation:

6 0
3 years ago
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Use any method to work these out, but do NOT use a calculator.
Artemon [7]

Answer:

A) 216

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Step-by-step explanation:

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4 0
4 years ago
In the Tigers Football Club, there are 9 players to each coach, while in the Eagles Football Club, there are 17 players to every
vivado [14]

9514 1404 393

Answer:

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  • Eagles: 16 coaches, 136 players

Step-by-step explanation:

We can define a "basic unit" of each team to be the minimum number of players and coaches that can have the given ratio. For the Tigers, that is 1 coach and 9 players, for a total of 10 team members. For the Eagles, that is 2 coaches and 17 players, for a total of 19 team members. If we have t basic units of Tigers and e basic units of Eagles, then we want ...

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We want t and e to be integers, so this is a Diophantine equation. It can be solved any of several ways, including use of the Extended Euclidean Algorithm. Here, we'll make some observations based on "number sense."

The value of e must be an even number between 0 and 232/19 = 12. The product of e and 19 must be a number that ends in 2, because 10t will end in 0, and the sum with 19e must end in 2.

The only multiple of 9 that ends in 2 is 9×8 = 72, so the value of e must be a positive number less than 12 that ends in 8. We must have e=8.

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The Tigers have 8 coaches and 72 players.

The Eagles have 16 coaches and 136 players.

8 0
3 years ago
The sum of two angles formed by the intersection of two lines is 50°. Find the measures of the angles.
MrRissso [65]

Answer:

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Step-by-step explanation:

when two lines intersect each other, four angles are formed . Two of these angles are equal and the other two angles are also equal. The equality of the of these angles is due to the fact that they are vertically opposite angles.

Vertically opposite angles are equal. Since the sum of two angles formed due to the intersection of the two lines is equal to 50° , the two angles should be equal(vertically opposite angles).

The angles will be 50/2 = 25°. Each angle will be 25°. If we want to find the other 2 angles formed by the intersection we subtract 50 from 360°.  we will get 310. The angles will be 310/2 = 155°.  Generally the angles formed from the intersection of this 2 lines will be 25°, 25°, 155° and 155°.  

7 0
3 years ago
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shutvik [7]
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5 0
3 years ago
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