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2 years ago

Bryce is making a model building. He raises the walls of the building by 2 centimeters, five times.

Mathematics

2 answers:

photoshop1234 [79]2 years ago

7 0

Answer:

10 cm!

I think...it's really basic math so...maybe?

Paha777 [63]2 years ago

5 0

Answer:

10 cm

Step-by-step explanation:

(2 cm)×5 = 10 cm

Bryce raises the walls 10 cm altogether.

You could add the raises, but multiplication is easier.

(2 cm) +(2 cm) +(2 cm) +(2 cm) +(2 cm) = 10 cm

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How do you solve it?

MatroZZZ [7]

Answer:

i: x=-2, x=1

ii: x=-1/2

Step-by-step explanation:

Quadratic form:

You solve i by using FOIL (First, Outside, Inside, Last) because it is a multiplication problem.

$(x+2)(x-1)=0$

"first" would be $x*x$ , which would equal $x^{2}$

"outside" would be $x*-1$ , which would equal $-1x, or -x$

"inside" would be $2*x$ , which would equal $2x$

"last" would be $2*-1$ , which would equal $-2$

Now you need to combine the terms so that they are one after the other

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Combine like terms, and you should get:

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You need to get the variable by itself.

Subtract two from both sides

$x+2=0\\x=-2$

Add one to both sides.

$x-1=0\\x=1$

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$x+2+x-1=0\\2x+1=0\\2x=-1\\x=-\frac{1}{2}$

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