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Nana76 [90]
4 years ago
10

Multiply (x+3)(x-3) A) x^2 +6x+9 B) x^2 -9 C) x^2 + 6x-9 D) x^2 - 6x +9

Mathematics
2 answers:
kotegsom [21]4 years ago
8 0

Hi!

We can remove the parentheses.

x+3·x-3

Group together like terms.

x·x+3·-3

x²-9

The answer is B) x²-9

Hope this helps! :)

-Peredhel

Nimfa-mama [501]4 years ago
3 0

(x+3)(x-3)

=x^2 + 3x -3x - 9

=x^2 - 9

Answer

B) x^2 -9

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strojnjashka [21]

Answer:

3 - a

Step-by-step explanation:

Given that when you add two numbers together the result is 3.

The greater of the number is given as a.

Let "x" represent that lesser number.

Thus:

a + x = 3

To make x the subject of the formula. Subtract a from both x.

a + x - a = 3 - a

x = 3 - a

Therefore, the expression that represents the lesser number, x, is:

3 - a

8 0
3 years ago
Which of the following lists the three named stars in order of increasing mass (lowest mass first)?
Helga [31]

Answer:

Option (A)

Step-by-step explanation:

The Barnard's Star is usually considered to be a red dwarf, that is approximately six light-years away from the location of earth. It is present in the Ophiuchus constellation and forms the 4th proximate star to the sun.

Altair refers to the bright shining star present in the Aquila constellation. It forms the 12th brightest star that occurs in the night sky.

Spica is one of the proximate stars to the earth and that is extremely large having a mass of almost ten times the mass of the sun.

The mass of Barnard's star is= 2.864 × 10^29 kg

The mass of the Altair is= 3.56 × 10^30 kg

The mass of the Spica= 19.89 × 10^30 kg

The arrangement of these given stars in the increasing order are as follows-

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Hence, the correct answer is option (A).

3 0
3 years ago
What is the range of the function f(x) = 2 – 2 when the domain is {0, 2, 4}? O {-1, 2, 14} {3, 6, 8} {-2, 2, 6) All real numbers
devlian [24]

Answer:

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Step-by-step explanation:

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5 0
3 years ago
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Serial numbers for a product are to be made using 2 letters followed by 3 numbers. If the letters are to be taken from the first
Daniel [21]
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    the third has 10  ways

Then to choose 3 numbers among 10, with repeat, there are 10x10x10= 1000 ways
And the total serial numbers that can be generated is
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8 0
3 years ago
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ziro4ka [17]

Answer:

E. 64,000,000

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2^26 = (2^13)^2

But 2^13 = 8000 so

2^26 =  (8,000)^2

= 64,000,000

7 0
3 years ago
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