All categories

3 years ago

X cubed plus 2x cubed NEED THIS ASAP

Mathematics

2 answers:

elena55 [62]3 years ago

5 0

X^3+2x^2
hope this helps

ahrayia [7]3 years ago

5 0

We can add them because of the distributive property
ab+ac=a(b+c)
so

x³+2x³=1x³+2x³=x³(1+2)=x³(3)=3x³

the simplified form is 3x³

You might be interested in

In a class, 45 students are taking the SAT exam.The number of boys is 9 more than the number of girls.How many girls and boys ar

maxonik [38]

The equation would be
g + (g + 9) = 45
2g + 9 = 45
- 9
2g = 36
÷ 2
g = 18
18 + 9 = 27
Girls: 18
Boys: 27
Hope this helps! Let me know if you have any questions :)

7 0

3 years ago

What is 5/8 + 11/12

Brrunno [24]

<h2><u>PLEASE MARK BRAINLIEST!</u></h2>

Answer:

Let's solve!

Step-by-step explanation:

$\frac{5}{8} + \frac{11}{12}$

$\frac{5}{8} + \frac{11}{12} = \frac{30}{48} + \frac{44}{48}$

$\frac{30}{48} + \frac{44}{48} = \frac{74}{48}$

$\frac{74}{48} = 1\frac{26}{48}$

$1\frac{26}{48} = 1\frac{13}{24}$

Your answer is $1\frac{13}{24}$

<em>I hope this helps!</em>

5 0

3 years ago

A cube has side length a.The side lengths are decreased to 30% of their original size.Write an expression in simplest form for t

jeka94

Answer:

Volume V = 0.027a^3

Step-by-step explanation:

Let a represent the length of the side length of the cube.

a.The side lengths are decreased to 30% of their original size;

l = 30% of a

l = 0.3a .....1

The volume of a cube can be expressed as;

V = l × l × l

V = l^3 .......2

Where;

l = side length

Substituting the value of l into equation 2;

V = l^3 = (0.3a)^3

V = 0.027a^3

Volume V = 0.027a^3

5 0

3 years ago

Next-door neighbors Bob and Jim use hoses from both houses to fill Bob's swimming pool. They know that it takes 12 h using both

Leokris [45]

Answer:

Jim's hose: 27 hours.

Bob's hose: 21.6 hours.

Step-by-step explanation:

Let t represent hours taken by Jim's hose.

Part of pool filled by Jim's hose in 1 hour would be $\frac{1}{t}$ .

We have been given that Bob's hose, used alone, takes 20% less time than Jim's hose alone. This means that Bob's hose take will take 80% time of Jim's hose that is $0.8t$ .