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Dvinal [7]
3 years ago
11

Write the negation of the following statement.

Mathematics
1 answer:
DENIUS [597]3 years ago
5 0

Answer:

  • B. An obtuse angle measures greater than 90°.

Step-by-step explanation:

  • An obtuse angle measures 85°.  

It is incorrect as obtuse angle is greater than 90°

<u>Correct answer </u>

  • B. An obtuse angle measures greater than 90°.
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The awnsers : A:24
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3 years ago
Read 2 more answers
Use Cramer's Rule to find x in the system of equations below.
Ronch [10]

Answer: x = 4 , y = -3

Step-by-step explanation:

Going by the Cramer's rule , we first determine the determinant by dealing with only  the coefficients of x and y in the 2 x 2 matrix.

2x  -  3y = 17

5x  + 4y = 8

2        -3

5         4,   going by the rule now, we now have

(2 x 4) - (5 x -3)

8 + 15

= 23.

Now to find the value of x , replace the constants with the coefficient of x and divide by he determinants.

 17        -3

 8          4

---------------  

2           -3

5            4

( 17 x 4 ) - ( 8 x -3 )

---------------------------

         23

     =  68 + 24

         ------------

              23

    =       92/23

    =           4.

 x =   4

Now  to find y, just repeat the process by replacing the coefficient of y with the constants.

2        17

5        8

-----------

2        -3

5         4

( 2 x 8 ) - ( 5 x 17 )

-----------------------

            23

       16 - 85

       ---------

          23

  =  -69/23

  =   -3

y =  -3.

check

substitute for the values in any of the equations above.

2(4)  - 3(-3)

8  + 9

= 17

 

 

8 0
3 years ago
Anyone really good at math i have some questions.....PLEASE!!
Hunter-Best [27]

Answer:

I can help you!

Step-by-step explanation:

What do you need help with?

3 0
3 years ago
Please Please help me.
AURORKA [14]

Answer:

3

Step-by-step explanation:

Factorial means multiply that number and all numbers below it

3! = 3*2*1 = 6

0! =1

2! = 2*1 = 2

1! =1

6*1

------

2*1

6/2 =3

8 0
3 years ago
At a certain store the taco sauce was on sale for 1/5 off.with a coupon for an additional 40 cents off, the final cost of the sa
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What is the question?

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