All categories

3 years ago

What is the factored form of the expression.Factor completely. 56k^3-84k^2+70k-105

Mathematics

2 answers:

kari74 [83]3 years ago

4 0

The answer would be

3x (2x - 3)(x^2 - 6 )

I hope this was helpful :D

PSYCHO15rus [73]3 years ago

3 0

Expression 56k³ - 84k² + 70k - 105 can be simplified to: 7(8k³ - 12k² + 10k - 15)

8k³ - 12k² + 10k - 15 is a third degree expression. it will be factorised to:
(k - 1.5)(k + 2.2)²

Finally expression 56k³ - 84k² + 70k - 105 can be simplified to: 7(k - 1.5)(k + 2.2)²

Good luck

You might be interested in

I need a word problem for this system of equation y=-80x+300. and I also need to explain the initial value and discuss the rate

photoshop1234 [79]

Answer:

15\4

Step-by-step explanation:

7 0

3 years ago

PLEASE HELP QUICKLY

andreev551 [17]

Answer:

He ran one mile in 20 minutes

Step-by-step explanation:

4 0

3 years ago

Which of the following relations is a function?

Murljashka [212]

Answer:

c is the one with function

3 0

3 years ago

the pta is ordering pizza for their next meeting. they plan to order 2 cheese pizzas for every 3 pepperoni pizzas they order. ho

vova2212 [387]

10 cheese pizzas

use simple ratio, 3:2 (3 pepperoni for every 2 cheese)
to make the ratio bigger, we substitute the "3" pepperoni for "15" pepperoni. then take the new amount, 15/3 original, you get 5. then multiply the 2 original cheese pizzas by that 5, and you get 10 cheese pizza's.

hope that helps

5 0

3 years ago

PLEASE HELP!

Wittaler [7]

Answer:

See below

Step-by-step explanation:

Use the formulae directly

For a cone, with base radius = r and height = h, here are the related formula

$\textrm{Slant height l} = \sqrt{r^2 + h^2}$ (1)

$\textrm{Lateral surface area} = \pi r l$

$\textrm {Base area} = \pi r^2$

$\textrm { Total Surface Area SA} = \textrm{Base Area + Lateral Area} = \pi r^2 + \pi rl = \pi r(r + l)$ (2)

$\textrm{Volume V = } (1/3) \pi r^2h$ (3)

Therefore directly plugging in the numbers in the above equations:

Note:

l = slant height in cm
SA = total surface area in sqcm
V = Volume in cubic cm

Figure(a)

r = 4, h = 8

$\textrm{l} = \sqrt{4^2 + 8^2} =\sqrt{80} = 8.944 \\\textrm{SA} = 4\pi(4 + 8.944) = 4\pi(12.944) = 162.66\\\textrm{V} = (1/3)\pi(4^2)(8) = 134.04$

Figure(b)

r = 7, h =15

$\textrm{l} = \sqrt{7^2 + 15^2} =\sqrt{274} = 16.55$

$\textrm{SA} = 7\pi(7 + 16.55) = 517.89$

Figure (c)

r = 5, l = 8

$h = \sqrt{l^2 - r^2} = \sqrt{8^2 - 5^2} = \sqrt{39} = 6.245\\SA = \textrm{SA} = 5\pi(5 + 8) = 204.2\\V = (1/3)\pi(5^2)(6.245) = 163.5$

6 0

2 years ago