MATHEMATICS HIGH SCHOOL

Y=2x-5
3x+8y+32=56
What does y and x equal?

Answers

Answer 1
Answer: y = 2x - 5
3x + 8y + 32 = 56
3x + 8(2x - 5) + 32 = 56
3x + 8(2x) - 8(5) + 32 = 56
3x + 16x - 40 + 32 = 56
19x - 8 = 56
      + 8   + 8
     19x = 64
      19     19
         x = 3.4
y = 2(3.4) - 5
y = 6.8 - 5
y = 1.8
(x, y) = (3.4, 1.8)

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At a benefit concert, fourteen bands have volunteered to perform but there is only enough time for six of the bands to play. How many lineups are possible?

Answers

There are 2,162,160 possible combination that could be made if there are 14 bands and only 6 slots available. This is computed using factorial. By using factorial we first need to identify the number of band and the number of slots available. It could be express as 14! - 8! or 14 x 13 x 12 x 11 x 10 x 9, which is equal to 2,162,160 combination.

©Brian invests £1300 into his bank account.
He receives 10% per year simple interest.
How much will Brian have after 3 years?
Give your answer to the nearest penny where appropriate.

Answers

Answer:I believe it’s £1690

Step-by-step explanation:

10%of 1300=£130

130 multiplied by 3 =390

1300+390=£1690

Answer:

3000

Step-by-step explanation:

How do you find the spread on a dot plot

Answers

The spread is the minimum value to the maximum value. The range is the maximum minus the minimum value hope that helps

How to solve for 40! / 10!30!

Answers

40! / 30!  = 40*39*38*37*36*35*34*33*32*31

dividing this by 10!   10*9*8*7*6*5*4*3*2*1

 =    4*13*19*37*17*11*4*31

=      847,660,528
     
         
         

Which of the following equations is y = x2 – 5x – 14 in factored form?Oy= (2-7)(2+2)
Oy= (x + 7) (x - 2)
Oy= (x - 5)(x – 14).
Oy= (x + 5) (x + 14)
Need help ASAP PLS

Answers

Answer:

Y = (x - 7) (x + 2)

Step-by-step explanation:

Solve each system.
y=2x+6
y= -3x+16

Answers

y=2x+6\ny= -3x+16\n\n2x+6=-3x+16\n2x+6+3x-6=-3x+16+3x-6\n5x=10\ /:5\nx=2\n\ny=2x+6\ \ \ \Rightarrow\ \ \ y=2\cdot2+6=4+6=10\n\nAns.\ \ x=2\ \ and\ \ y=10
y= 2x+6  so therefor ----> x=2 and y=10 
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