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3 years ago

Factorise completely (2x+1)^2 -(x-1)^2

Mathematics

1 answer:

Vladimir79 [104]3 years ago

5 0

Use photomath ! It's an app that gives you the answer with the explanation and it shows you how it got to the answer !

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Reciprocal of 2 3/11

const2013 [10]

Answer:

11/25

Step-by-step explanation:

Reciprocal is the fraction flipped

6 0

2 years ago

The length of a living room is 12 feet and its width is 1012 feet. The length of the room is being expanded by x feet. Choose an

Ivanshal [37]

Answer:

Option C. 10.5(12 + x) square feet

Option E. (126 + 10.5x) square feet

Step-by-step explanation:

step 1

Find the area of the original living room

we know that

The area of the original living room is equal to

$A=LW$

we have

$L=12\ ft\\W=10\frac{1}{2}\ ft=10.5\ ft$

substitute

$A=(12)(10.5)=126\ ft^2$

step 2

Find the new area of the living room

The length of the room is being expanded by x feet

we have

$L=(12+x)\ ft\\W=10.5\ ft$

The new area is

$A=10.5(12+x)\ ft^2$

The expanded form of the expression is

Apply distributive property

$A=10.5(12)+10.5(x)\\A=(126+10.5x)\ ft^2$

6 0

3 years ago

Solve: 16 + x = 12 then you can get the brainiest.

alexgriva [62]

The answer would be -4 because when you add a positive and a negative it’s like subtracting.

4 0

3 years ago

Please help me.......

Vesna [10]

Answer:

Step-by-step explanation:

I hope this helps

8 0

2 years ago

Russell has been training for the Emerald Valley Race. The first week he trained, he ran 5 days and took the same two routes eac

Ivahew [28]

In maths, Distance is described as the quantity of space between two points, and further calculation can be defined as follows:

Given Expression:

$5x + 2 = 30\\\\2(x + 5) = 30\\\\5(x + 2) = 30\\\\2x + 5 = 30$

To find:

distance=?

Solution:

$5\ days\ \begin{cases} & \text{ if } \text{before school 2 miles} \\ & \text{ if } \text{after school x miles} \end{cases}$

$\therefore 5(x+2)=30\\\\$

$\bold{5(x+2)=30}\\\\\bold{5x+10=30}\\\\\bold{5x=30-10}\\\\\bold{5x=20}\\\\$

$\bold{x=\frac{20}{4} }\\\\\bold{x=4}$

Therefore, the final answer is "4 miles".

Learn more:

brainly.com/question/12186030

8 0

2 years ago

Read 2 more answers