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PilotLPTM [1.2K]
3 years ago
8

Solve 3x-4y=18,9x+2y=12

Mathematics
1 answer:
jasenka [17]3 years ago
4 0
The values of x and y are 2 and -3 respectively.

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Write an equation in point slope form that passes through the point (1,8) & slope of -3 show all work
densk [106]

y-y1 = m(x-x1)

where: x1 = 1 y1 = 8 (given point (1,8) and m = -3

y - (8) = -3 (x - (1))

y - 8 = -3 (x-1)

y- 8 = -3x +1




6 0
3 years ago
Consider the spreading of a rumor through a company of 1000 employees, allworking in the same building.We assume that the spread
natima [27]

Answer:

On the 12th day, the rumor would have has to all the 1000 employees

Step-by-step explanation:

Given the data in the question;

so, lets consider the rumor spreading thorough the company of 1000 employee;

the given model is; r_{n+1} = r_{n} + 1000kr_{n} ( 1000 - r_{n} )

where k is the parameter that depends on how fast the rumor spreads, n is the number of days.

now, lets assume k = 0.0001, lets also assume r₀ = 4

so to find how soon all 1000 employees  will have heard the rumor  ;

let n be;

then r1 will be;

r1 = r₀ + ( 0.001)r₀(1000-r₀ )

so

r1 = 4 + ( 0.001) × 4× (1000 - 4 )

r1 = 7.984

r2 will be;

r2 = r1 + ( 0.001)r1(1000-r1 )

r2 =  7.984 + ( 0.001) × 7.984 × (1000 - 7.984 )

r2 = 15.904255744

   

r3  will be;

r3 = r2 + ( 0.001)r2(1000-r2 )  

r3 = 15.904255744 + ( 0.001) × 15.904255744 × (1000 - 15.904255744 )

r3 = 31.555566137

Using the same formula and procedure by substituting n = 1,2,3,4,5,6,7,8,9,10,11,12.

we will have;

n        rₙ

0        4

1        7.984

2       15.904255744

3       31.555566137

4       62.1153785

5       120.372437

6       226.25535

7       401.319217

8       641.58132

9       871.53605

10     983.497013

11      999.727651

12     999.999926

Therefore, On the 12th day, the rumor would have has to all the 1000 employees

 

5 0
3 years ago
What expression is equivalent to 24b-34ab
Svet_ta [14]
It should be 2b(12-17a)
8 0
3 years ago
The length of the sides of a triangle from a G.P. The length of the longest side exceeds that of the shortest side by 9cm. The p
Bas_tet [7]

Take sides as a, \: ar, \: ar^2

6 0
2 years ago
On Friday night 225 people saw the dinosaur exhibit at the museum this amount represents 20% of the people who visited the museu
Igoryamba
20 %  = 225
1%  =  225 / 20
100% =  225 * 100 / 20
           =   1125  answer
8 0
3 years ago
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