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Pachacha [2.7K]
3 years ago
13

(x-3)(x+6)multiply and simplify your answer ​

Mathematics
1 answer:
enot [183]3 years ago
5 0

Answer:

x^{2} + 9x +18

Step-by-step explanation:

multiply the parentheses together (x × x)=x² and x×6=6x then do 3×x which will equal 3x and then multiply 3 and 6 which is 18

now combine like terms (x²+6x+3x+18)

6+3=9 so now you will have x²+9x+18

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The length of a rectangle is 4 ya more than twice the width x. The area is 510 yd^2. Find the dimensions of the given shape
Furkat [3]

Answer:

The dimensions of the rectangle are

length = 34 yards

width = 15 yards

Step-by-step explanation:

Given:

The shape is of rectangle,

Width of rectangle = x

Area of rectangle = 510 yd²

According to the given condition

Length of rectangle = 4 + 2x

To Find:

length =?

Width = ?

Solution:

We know that,

\textrm{Area of rectangle} = Length\times Width

On substituting the given values we get

510 = (4 + 2x)\times x\\510 = 4x+2x^{2}\ \textrm{using distributive property}\\\textrm{dividing throughout by two}\\255=2x+x^{2} \\\\x^{2} +2x -255 = 0\\

Which is a quadratic equation so we will apply splitting the middle term that is factorization we get

∴ x^{2}+ 17x -15x -255=0\\x(x+17)-15(x+17)=0\\(x-15)(x+17)=0\\\therefore x-15 =0\ or\ x+17=0\\\\\textrm{x cannot be negative i.e -17}\\\therefore x=15

∴ Width  x = 15 yard

∴ Length = 4 + 2x = 4 +2 × 15 = 34 yard

The dimensions of the rectangle are

length = 34 yards

width = 15 yards

5 0
3 years ago
use any strategy to solve the following problems 1) for haloween ned received 48 pieces of candy .if he put them into piles with
Veronika [31]

Answer:

He could make 16 piles.

Step-by-step explanation:

Divide 48 by 3: 48 ÷ 3 = 16

6 0
2 years ago
Which numbers in set A are elements in both the subset of odd numbers and the subset of multiples of 3? Plz help I will give the
hodyreva [135]

Only 3 and 9 are both the subset of odd numbers and the subset of multiples of 3.

6 0
3 years ago
20n^4+n^3+10n^2) / 10n^2
Zina [86]
Divide them
We'd get
2n^2+1/10n + 1
3 0
2 years ago
What is 25 times 25?
nikdorinn [45]

Answer:

625 is the answer!!!!!!!!

5 0
3 years ago
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