Find the product of - y(2y 3 - 8)

Answers

Answer 1

Answer: i used mathway to answer this and it said it was -6y(to the second power)+8y

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Answers

Answer:

Step-by-step explanation:

total length = 6 + 6 + 6 = 18 cm

total breadth = 3 + 3 + 3 = 9 cm

perimeter = 2 ( l + b )

= 2 ( 18 + 9 )

= 2 × 27

What is the final sales price of a telescope that originally cost $400 but was marked up 32?

Answers

Answer:

$528

Step-by-step explanation:

I'm assuming you mean up 32%?

3sin(2x)-1=0 to solve

Answers

Answer is in the attachment below.

$3\sin (2x)-1=0 \n \n 3\sin(2x)=1 \qquad /:3 \n \n \sin (2x) = (1)/(3) \n \n 2x=\arcsin (1)/(3) +2\pi k\qquad \hbox{or} \qquad 2x= \pi - \arcsin (1)/(3)+2\pi k \qquad /:2 \n \n x_1=(1)/(2)\arcsin (1)/(3)+\pi k \n \n x_2=(\pi)/(2)-(1)/(2)\arcsin (1)/(3)+\pi k$

k is an integer

arcsin (1/3) is approximately 0.34 radians (19.47 degrees)

Sylvie finds the solution to the system of equations by graphing.y = x + 1 and y = x – 1
Which graph shows the solution to Sylvie’s system of equations?

Answers

Answer:

the 2nd one

Step-y-step explanation:

1.- I am a multiple of 3
- I am an odd number
- the sum of my digits is 6
- my ones is one more than my tens digit
- my hundreds digit is 5 times my one digit
what number am I?

2.
- all my digits are different
-my ones digit is 4 times my hundreds digit
- my thousands digit is a perfect square
-my ones digit is 3 more than my tens digit
what number am I?

Answers

Answer:

1. 501

2. 1258 or 4258 or 9258

Step-by-step explanation:

1. represent number (d3d2d1) in terms of x. let x = 10's digit (dxd) then

d2 = x

d1 = x + 1

d3 = 5(x + 1) = 5x + 5

d3 + d2 + d1 = 6

(5x + 5) + (x) + (x + 1) = 6

7x + 6 = 6

7x = 0

x = 0 SO

d3 = (5x + 5) = 5

d2 = 0

d1 = x + 1 = 1

501

2. d4d3d2d1 and d1 not = d2 not = d3 not = d4, let d3 = x and d2 = y then

d2 = y

d3 = x

d1 = 4x and d1 = y + 3 so 4x = y + 3 or y = 4x - 3

d4 = perfect square (1 or 4 or 9)

any d must be <= 9

d4d3d2d1 = (1 or 4 or 9)(x)(4x - 3))(4x) so x<3 (0,1,2) or d1 fails <= 9

(1,4,9)(0,1,2)((4x - 3 = (1,5))((4x = 0,4,8)

d3 (0,1,2) must be 2 because 0 does not work for d2 and 1 does not work for d1, so this make d1 (4x) = 8 so

(d4)(2)(4x - 3 = 5)(4x = 8) = d4 (1,4,9) and 258 so

1258 or 4258 or 9258

The solution of an equation with two variables X and y is

Answers

Answer:

The solution of an equation with two variables (x and y) is an ordered pair (x, y).

Step-by-step explanation:

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