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3 years ago

3x multiplied x+7 =?

Mathematics

1 answer:

trasher [3.6K]3 years ago

4 0

3x^2 + 21x
Is the answer without a doubt.

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(n+1)^3-n^3=1+3 (n+1)n using this formulae find the cube of 999.If cube of 1000 is 1000000000.

Nastasia [14]

We use the formula: ( a - b )^3 = a^3 - b^3 - 3ab( a - b);

a = 1000; b = 1;

999^3 = 1000^3 - 1^3 - 3·1000·1( 1000 - 1 ) = 1000000000 - 1 - 3000·999 = 1000000000 - 1 - 2997000 = 997002999;

6 0

3 years ago

List the prime factors for 54

natta225 [31]

Answer:

Step-by-step explanation:

The factors of 54 are 1, 3,9,18,27, and 54. 3 is the only prime number here.

Hope this helps.

8 0

4 years ago

Read 2 more answers

Simplify 7j-6k-5j+4k which explanation please:)

Phantasy [73]

Step 1. Gather like terms

 $(7j-5j)+(-6k+4k)$

Step 2. Simplify

 $2j-2k$

Done! Hope this helps :)

4 0

3 years ago

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Is 36 a square number

disa [49]

Yes it is a square number

5 0

3 years ago

Read 2 more answers

andre rode his bike at a constant speed he rode 1 mile in 5 minutes which of these equations represents the amount of time in mi

Alex777 [14]

We are given

Andre rode his bike at a constant speed he rode 1 mile in 5 minutes

Firstly, we will find constant speed

In 5 minutes , distance travelled =1 miles

so, we get speed

$v=\frac{1}{5} mile/min$

Let's assume T is time in minutes

D is the distance in miles

we know that

$Time=\frac{Distance}{speed}$

so, we can plug value

and we get

$T=\frac{D}{\frac{1}{5} }$

so, we get

$T=5D$ ...............Answer

3 0

3 years ago