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Lostsunrise [7]
3 years ago
13

Cuanto es r2-2r-7=0​

Mathematics
1 answer:
vekshin13 years ago
6 0

Answer:

Step-by-step explanation:

The solution is attached

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write the equation in slope-intercept form of the line passing through the points (-3, -2) and (-5, 2) hint: y = mx + b, all wor
Mama L [17]

Answer:

y(x) = -2x -8

Step-by-step explanation:

using the hint, insert the points (x,y) in the equation:

-2 = -3m + b       eq1

2 = -5m + b        eq2

eq2 - eq1 :  

4 = -2m  ==> m = -2

insert m in eq1:    

-2 = -3*(-2) +b   ==> b = -8

4 0
3 years ago
What is the quotient of the division below?
erastovalidia [21]

Answer:

C. 48

Step-by-step explanation:

336/7 is 48

3 0
3 years ago
Read 2 more answers
Let cos x =1√10 with x in QIV and find: cot2x
Mazyrski [523]
Cos x = 1/√10
sin x = √( 1 - 1 /10 ) = √9/10 = - 3/√10 ( because x is in Q IV )
cot 2 x = cos 2 x/sin 2x = ( cos²x - sin²x)/ (2 sinx cosx ) =
= ( 1/10 - 3/10 )/(2 * (-3/√10)*1/√10)= (- 8/10 ) / (-6/10 ) = 8/6 = 4/3
3 0
2 years ago
If the volume of a rectangular prism is 240 cm3. What would be the dimensions?
lina2011 [118]

Answer:

I'm pretty sure the Volume of pyramid is  

80 cm

Step-by-step explanation:

3 0
3 years ago
A rectangular courtyard 3.78 metres long
Alborosie

Answer:

i believe the answer is C

Step-by-step explanation:

3.78 meters = 378 cm

5.25 meters = 525 cm

378 x 525 = 198,450

198,450 / 42 = 4725

4725 which is a whole number

8 0
3 years ago
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