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goblinko [34]
2 years ago
15

2) A shirt costs $12.50 but there is a discount of 10%. The

Mathematics
1 answer:
Salsk061 [2.6K]2 years ago
7 0
12.50-0.1=11.25
11.25x0.09= 1.01
11.25+1.01=12.26

The final price is $12.26
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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
Doughnuts at one shop cost £1.20 each.
charle [14.2K]

Answer: 30p

Step-by-step explanation:

Cost of donuts in the first shop £1.20

Cost at the second shop at 25% higher

= 1.20 x 1.25 = 1.50

Difference in price

= 1.50 - 1.20 = 0.30

3 0
3 years ago
What is the slope and y intercept of the equation 6x-1 = 3y - 10
Ivan
First, change it into general form(y=my+b).
3y=6x-1+10
3y=6x+9
y=2x+3
So, the slope is 2, and the y-intercept is 3
6 0
2 years ago
Liz ran 4/5 km on Monday and 56 KM on Tuesday  about how much did she run?
Dimas [21]

Answer:

56.8

Step-by-step explanation:

4/5+56 =56.8

very sorry if this is wrong

3 0
2 years ago
Read 2 more answers
Determine the number of solutions for this equation:<br> 4x-1=2[2x-1]
krek1111 [17]

Answer:

See the attachment and Mark as brainleist please.

7 0
2 years ago
Read 2 more answers
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