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2 years ago

Which is another way of correctly expressing (x - 3)(x - 3)?

Mathematics

2 answers:

Pavlova-9 [17]2 years ago

8 0

Answer:

There are two ways.

1.) The box method

2.) F.o.i.l

Both of these are easy to do, but if you have trouble visualizing things in your head I suggest the box method.

Here is how I did the problem with the box method

worty [1.4K]2 years ago

5 0

(x-3)^2, as x-3 is repeated twice

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Diano4ka-milaya [45]

Answer: I think the last option is the correct answer.

Step-by-step explanation:

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In a 3-digit number, the hundreds digit is one more than the ones digit and the tens digit is twice the hundreds digit. If the s

MaRussiya [10]

Answer:

The mentioned number in the exercise is:

362

Step-by-step explanation:

To obtain the mentioned number in the exercise, first you must write the equations you can obtain with it.

If:

x = hundredths digit
y = tens digit
z = ones digit

We can write:

x = z + 1 (the hundreds digit is one more than the ones digit).
y = 2x (the tens digit is twice the hundreds digit).
x + y + z = 11 (the sum of the digits is 11).

Taking into account these data, we can use the third equation and replace it to obtain the number and the value of each digit:

x + y + z = 11
(z + 1) + y + z = 11 (remember x = z + 1)
z + 1 + y + z = 11
z + z +y + 1 = 11 (we just ordered the equation)
2z + y + 1 = 11 (z + z = 2z)
2z + y = 11 - 1 (we passed the +1 to the other side of the equality to subtract)
2z + y = 10
2z + (2x) = 10 (remember y = 2x)
2z + 2x = 10
2z + 2(z + 1) = 10 (x = z + 1 again)
2z + 2z + 2 = 10
4z + 2 = 10
4z = 10 - 2
4z = 8
z = 8/4
z = 2

Now, we know z (the ones digit) is 2, we can use the first equation to obtain the value of x:

x = z + 1
x = 2 + 1
x = 3

And we'll use the second equation to obtain the value of y (the tens digit):

y = 2x
y = 2(3)
y = 6

Organizing the digits, we obtain the number:

Number = xyz
Number = 362

As you can see, the obtained number is 362.

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2 years ago

Need help with this question):

Citrus2011 [14]

I’m not sure maybe someone else will help

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2 years ago

An aquarium holds 56. 25 gallons of water. It has a length of 2 feet and a height of 2. 5 feet. What is the volume of the aquari

GaryK [48]

Wouldn’t it just be 56.25 bc it holds that much bc v=l x w x h and there is no height

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