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ollegr [7]
3 years ago
15

2[3x-(4x-6)]=5(x-6)Solve and answer the linear equation.

Mathematics
1 answer:
OleMash [197]3 years ago
8 0

Answer: x = 6

<u>Step-by-step explanation:</u>

2[3x - (4x - 6)] = 5(x - 6)

2[3x - 4x + 6] = 5x - 30

2[-x + 6] = 5x - 30

-2x + 12 = 5x - 30

<u>+2x        </u>  <u>+2x        </u>

        12 = 7x - 30

      <u>+30 </u>  <u>      +30 </u>

        42 = 7x

         \frac{42}{7} = \frac{7x}{7}

          6 = x

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Plz help me, first one who helps will get a BRAINLIEST.
Gnom [1K]

Answer: 1. 1,0 2. -1,9 3.-20

Step-by-step explanation:

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3 years ago
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14. Find mMK please :)
MrRissso [65]

Answer:

Step-by-step explanation:

11) strategy:  since they tell us. indirectly,  that the length of  JK is the same as LM then we can set those two equal, solve for X  and then.. when we have X we can figure out the lenght of JK  and LM and then just divide that by 2 go get PK  ( :0 Player Killer ???  no , not that PK)    

solve JK and LM

3x + 23 =9x-19

42 = 6x

7 = x

now that we know x = 7 plug it into either equation to come up with the length of JK or LM .  I'll pick JK just b/c it was 1st

3(7) + 23 = JK

21+23 = JK

44 = JK

now take half of 1/2*JK= 22  that is PK    ( are you sure that 's not player killer?)

PK = 22

12) strategy: set the two arcs BG and GC equal and solve for X, then plug x into either equation and the multiply the answer by 2 to find arc AB

9x-20 = 5x + 28

4x = 48

X = 12

9(12) -20 = BG

88 = BG

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13) done

14)  strategy: find the angle at L,  and that will also be the arc of MK

<em>copy and past the below</em> helpful trig functions into your computer

Use SOH CAH TOA to recall how the trig functions fit on a triangle

SOH: Sin(Ф)= Opp / Hyp

CAH: Cos(Ф)= Adj / Hyp

TOA: Tan(Ф) = Opp / Adj

<em>copy and past the above</em> :

use which ever trig function you want , we have all the sides of the triangle, I'll use CAH

Cos(Ф) = 9/15

Ф = arcCos(9/15)

Ф = 53.13010°

arc MK = 53.13010°

15)   strategy:  arc JK is just 2 times MK

2*MK = 106.26020°

arc MK = 106.26020°

16) find arc JPK   strategy:  JPK is just the remaining part of a full circle of 360 - MK  = 253.7397°

arc JPK = 253.7397°

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2 years ago
PLZ HELPP MEE DUE TONIGHT!!!!!!!!!!!!!
KATRIN_1 [288]
We know that
x²+px−35=0-------> <span>has one root that is equal to 7
so
substitute x=7 in the equation
</span>7²+p*7−35=0
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14+p*7=0
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the answer Part a) is 
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</span>
Part b) <span>Find the other root
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<span>
using a graph tool-------> to resolve the second order equation
see the attached figure

the other root is
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</span>

3 0
4 years ago
Change the percent to a fraction:10%
Shkiper50 [21]

Answer:

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Step-by-step explanation:

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8 0
2 years ago
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Find the surface area of the figure below​
Vera_Pavlovna [14]

Answer:

310.8m²

Step-by-step explanation:

<u>GIVEN :-</u>

  • Diameter = 9m ⇒ Radius (r) = 9/2 = 4.5m
  • Slant height (l) = 13m

<u>TO FIND :-</u>

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<u>FORMULAES TO KNOW BEFORE SOLVING :-</u>

  • Curved surface area of cone = \pi rl (where r = radius & l = slant height)
  • Curved surface area of hemisphere = 2\pi r^2 (where r = radius)

<u>PROCEDURE :-</u>

In the figure , the cone is mounted on a hemisphere.

⇒ Radius of cone = Radius of hemisphere = 4.5m

Total surface area of the figure = Curved surface area of both cone & hemisphere.

⇒

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∴ Total surface area = 183.7 + 127.1 = 310.8m²

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