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Ostrovityanka [42]
3 years ago
12

Pencils cost 9p each. How much would 28 pencils cost?​

Mathematics
1 answer:
pickupchik [31]3 years ago
3 0

Answer:

252p

Step-by-step explanation:

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COMPLETING THE SQUARE<br> X^2– 2x +
Studentka2010 [4]

Answer:

x^2 -2x + 1

Step-by-step explanation:

Think of a quadratic equation as

ax^2 + bx + c

x^2 -2x +

Comparing the two equations

a = 1 ,  b = -2,  c = ?

c becomes the missing part

Divide b by 2

-2/2 = -1

square the result

-1^2

= 1  this is what to add to get a perfect square

x^2 -2x + 1

(x - 1)^2

6 0
3 years ago
Expand and simplify <img src="https://tex.z-dn.net/?f=%20%283x-2%29%5E%7B2%7D%20" id="TexFormula1" title=" (3x-2)^{2} " alt=" (3
Rus_ich [418]
You can just 1) multiply the binomial by itself, or you can use 2) the square of a binomial pattern. I'll show it to you both ways.

1) Multiply the binomial by itself.

(3x - 2)^2 = (3x - 2)(3x - 2) =

Multiply every term of the first binomial by every term of the second binomial, then collect like terms. (This is often called using FOIL.)

= 9x^2 - 6x - 6x + 4

= 9x^2 - 12x + 4

2) Use the square of a binomial pattern

The square of a binomial is

(a - b)^2 = a^2 - 2ab - b^2

a^2 is the square of the first term.
b^2 is the square of the second term.
-2ab is the product of the two terms and 2.

You have

(3x - 2)^2,
where the first term is 3x, and the second term is -2

square the first term: 9x^2
square the last term: 4
the product of the terms and 2 is: -12x

Put it all together, and you get

9x^2 - 12x + 4

just like we got above with the other method.
7 0
3 years ago
Tug of War Activity
guapka [62]

Answer:

Round 3 the grandmas

Step-by-step explanation:

6 0
3 years ago
The measures of the angles in △ABC are given by the expressions in the table.
lozanna [386]

Answer:THE CORRECT ANSWER ISSSSSS x=25

mb=65

mc=50



6 0
3 years ago
Read 2 more answers
Triangle TUV and the triangle LMN are similar what is the measure of side LM
grin007 [14]

The answer should be 28

5 0
3 years ago
Read 2 more answers
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