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sdas [7]
3 years ago
15

Someone plz help on # 15 (idk what to do) :/

Mathematics
1 answer:
aleksklad [387]3 years ago
4 0

Answer:

2x-5= -20

move -5 to the other side

sign changes from -5 to 5

2x-5+5= -20+5

2x= -15

divide by 2 for both sides

2x/2= -15/2

cross out 2 and 2, divide by 2 and 2 and then becomes x

x= -15/2

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11x<-66 what is the answer
melomori [17]
11 x < - 66

x < - 66 / 11

x < - 6

hope this helps!
8 0
3 years ago
Is 0 14 closed under multiplication
Elden [556K]
No because 0x14 would be 0 BUT it is still multiplication.
4 0
3 years ago
Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis. y = 64x−8x^2,
Mandarinka [93]
We need to get the limits first. When y = 0
0 = 64x - 8x^2
x = 0 and x = 8
The volume is
V = ∫ y dx from 0 to 8
V = ∫ (64x - 8x^2) dx from 0 to 8
V = 32x^2 - 8x^3/3 from 0 to 8
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4 0
3 years ago
On his drive from Montpelier, Vermont, to Columbia, South Carolina, Arthur averaged 51 mph. If he had been able to average 60 mp
Llana [10]

Answer:

Distance between Montpelier and Columbia is 1020

Step-by-step explanation:

51 mi/hr average:

d = 51 t  

60 mi/hr average:

d t = 60*(t-3)

Substitute (1) into (2)  

   51 t =  60*(t-3)

   51 t =  60 t + 180

   9 t  =  180

   t    =   20

d = 51 t

   = 51 (20)

   = 1020

let see distance is 1020 lets check

51 t = 60 * (t-3)

51 (20)= 60* (20-3)

1020   = 60*17

1020 = 1020

4 0
3 years ago
Find the value of x.
Slav-nsk [51]

Answer:

  x = 53

Step-by-step explanation:

The sum of the angle measures in a triangle is 180°:

  91° + 36° + x° = 180°

  x° = 180° -127° = 53°

  x = 53

6 0
3 years ago
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