Answer:
x = 20 ft
Step-by-step explanation:
We can use similar triangles and ratios to solve
4.5 ft 6 ft
--------- = ---------------
15 ft x ft
Using cross products
4.5x = 15*6
4.5x =90
Divide each side by 4.5
4.5x/4.5 = 90/4.5
x =20
You read 2/5 of the remainder on Sunday. That means 3/5 of the remainder are unread (1- 2/5). It is given that 36 pages are unread. Therefore 3/5 of the remainder is equal to 36. Set up equation and solve for x which will be the remainder
3/5x=36
x=36(5/3)
x=60
Answer:
20
Step-by-step explanation:
3/4 = 75%
15 ÷ 75% = 20
15 is 75% of 20.
Answer:
15x^2 - 12x^3
Step-by-step explanation:
A rectangular block has 3 parts that play into its volume. length, width and height. The question gives us length and width in the form of x and 3x, so height is what's missing.
It gives us a bit more information saying the sum of its edges is 20. We also have to ask how many lengths, widths and heights are there. That may be a bit hard to understand, but is you are looking at a block I could ask how many edges are vertical, just going up and down. These would be the heights. There are 4 total, and this goes the same for length and width, so 4*length + 4*width and 4*height = 20.
Taking that and plugging in x for length and 3x for width (or you could do it the other way around, it doesn't matter, you get:
4*x + 4*3x + 4*height = 20
4x + 12x + 4h = 20
16x + 4h = 20
4h = 20 - 16x
h = 5 - 4x
Now we have h in terms of x, which lets us easily find the volume just knowing x. To find the volume of a rectangular block you just multiply the length, width and height.
x*3x*(5-4x)
3x^2(5-4x)
15x^2 - 12x^3
Question doesn't give a specific value for x at all so you should be done there. Any number you plug in for x should get you the right answer
Answer:
32?
Step-by-step explanation:
16×2=32
not sure what the numbers after that means but
x8=128
x16=256
x4=64
