16 + (28/2) - (6 /10) - 4 × 2

Rewrite it

= 7 × 100 + 8 × 1 + 9 × 0.1 + 8 × 0.001

= 700 + 8 + 0.9 + 0.008

= 708.908

Make proportion,

42/x = 35/100

35x = 4200

x = 4200/35

x = 120

Hence, 42 is 35% of 120

gross profit margin= total profit / total sales

profit = 9 × 8 - ( 40 + 8 ) = 24

sells = 9 × 8 = 72

24/72 = 33%

To obtain the desired 40% profit,

the book needs to sell for $50 + 40% * $50

Our target price for the sale is 50 + 0.4*50

= 50 + 20

=$70

We need the original price of the book

to be enough so that 20% off of that

price gives us $70

Set P = the original price

The original price minus 20% … Read more

**let speed of wind be y mphlet speed of plane in still air be x..Against wind the speed = x-ydistance traveled = 24602460/x-y= 66x-6y= 2460x-y=410...........1..with wind speed = x+ydistance is same 24602460/x+y=5**

**5x+5y=2460x+y=492............2..Add equation 1 & 2x-y+x+y=410+4922x=902x= 451 mph speed of plane in still air...Plug the value of x in equation 1451-y=410y=451-410y=40 mph the speed of** … Read more

"Icosikaihenagon" is a proper denomination for a 21-sided polygon, according to Wikipedia (see Polygon).

However, I doubt that even a well-read mathematician would understand precisely what this word is referring to (apart perhaps if the said mathematician is Greek).

"21-gon" would be a much more intelligible designation.

(y - y₁) = m(x - x₁)

m = tanθ

m = tan 135

m = -1

(x₁, y₁) = (-2, 3)

(y - 3) = -1[x - (-2)]

y - 3 = -1[x + 2]

y - 3 = -x -2

y =-x-2+3

y = -x + 1

Write this as

44 + 1/6

= 264/6 + 1/6

= (264+1)/6

= 265/6

I was searching the answer of this question and I found the same question with the complete solution, here

I hope it'll help.

Harry now = x

Nick now =7x

Nick in 6 years = 7x+6

Harry in 6 years = x+6

Nick in 6 years = 5(Harry in 6 years)

7x+6 = 5(x+6)

So that's the one we want: 7x+6 = 5(x+6)

7x+6 = 5x+30

2x = 24

x =12

so Harry's age in 6 years will be … Read more

1 hour = 60 minutes

1/3 0f 60 minutes = 1/3 × 60

= 60/3

= 20 minutes

I hope it'll help you.

# 4y + 10 - 2y = 8 + y

# 4y - 2y + 10 = 8 + y

2y + 10 = 8 + y

2y - y = 8 - 10

y = -2

Write 6 7/8 in simple fraction

6 7/8 = 55/8

1/2 of 55/8 = 55/8 × 1/2

= 55/4 = 13 3/4