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olga55 [171]
2 years ago
14

Evaluate the given algebraic expression for x = 2 and y= 3. -Зху -6 -12 -18 -24

Mathematics
1 answer:
mrs_skeptik [129]2 years ago
4 0

Answer:

-18

Step-by-step explanation:

-3xy,X=2 ,y=3

-3(2)(3)

-3(6)

=-18

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Step-by-step explanation5:

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If you have 3x + y = 9 write it in slope intercept form... what is the slope, y intercept?
ladessa [460]

Step-by-step explanation:

given

3x + y = 9

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3 0
3 years ago
What is the exact value of cos (67.5° )?
Brilliant_brown [7]

Answer:

0.38268343

Step-by-step explanation:

cos( 67.5 )

Rewrite  

67.5

as an angle where the values of the six trigonometric functions are known divided by  2 . cos ( 135\ 2)

Apply the cosine half-angle identity.

±

√

1

+

cos

(

135

)

2

 

Change the  

±

to  

+

because cosine is positive in the first quadrant.

√

1

+

cos

(

135

)

2

Simplify  

√

1

+

cos

(

135

)

2

√

2

−

√

2

2

The result can be shown in multiple forms.

Exact Form:

√

2

−

√

2

2

Decimal Form:

0.38268343

…

6 0
3 years ago
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