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Arada [10]
3 years ago
15

Hello i need some help!

Mathematics
2 answers:
loris [4]3 years ago
8 0
3(2-b) can be rewritten as 3•2 - 3b

In the distributive property you are distributing the number outside the parentheses to the numbers inside.
murzikaleks [220]3 years ago
5 0

Answer:

3×2 + 3×-b

Step-by-step explanation:

3(2-b)\\= 3\times 2 + 3\times (-b)\\\\= 6 -3b

You might be interested in
What is the factored form of a2 – 121?
Flura [38]

Answer:

The factored form a^2-121 is (a+11)(a-11).

Step-by-step explanation:

Given : a^2-121

We have to write the given expression in factored form.

Factor form of an expression is writing the expression in lower power form such that the product of factors given the original expression

Consider the given expression  a^2-121.

We know the algebraic identity x^2-y^2=(x+y)(x-y)

Here a^2-121=a^2-(11)^2.

Comparing with identity stated above , we have x= a , b = 11 , thus, we get

a^2-(11)^2=(a+11)(a-11).

Thus, the factored form a^2-121 is (a+11)(a-11).

7 0
3 years ago
What is 2X to the power of 3 divided by -8X to the power of 4?
PIT_PIT [208]

Answer: 8 = 23 (-8)4 = (23)4 = 212

1/(2048x)

Step-by-step explanation:Negative number raised to an even power is positive

For example let's look at (-7)6 , where (-7) , a negative number, is raised to 6 , an even exponent :

(-7)6 can be written as (-7)•(-7)•(-7)•(-7)•(-7)•(-7)

Now, using the rule that says minus times minus is plus, (-7)6 can be written as (49)•(49)•(49) which in turn can be written as (7)•(7)•(7)•(7)•(7)•(7) or 76 which is positive.

We proved that (-7)6 is equal to (7)6 which is a positive number

Using the same arguments as above, replacing (-7) by any negative number, and replacing the exponent 6 by any even exponent, we proved which had to be proved

Dividing exponential expressions :  x3 divided by x4 = x(3 - 4) = x(-1) = 1/x1 = 1/x

Final result :

1/2048x

im in middle school

6 0
3 years ago
Dave is three times as old as his sister. In seven years the sum of their ages will be 38. How old are they now?
bija089 [108]

Answer:

Dave is 18 and his sister is 6.

Step-by-step explanation:

If you do 38 -7x2 you can work out the combined ages of them now which is 24 (you have to do 7x2 because there are two of them and its seven years in the future). Then you can work out their ages using a ratio. Dave’s age : his sister’s age is 3:1 so if you divide 24 by 4 (3+1 = 4 so your can work out one portion of their age) you can find out how old the sister is which is 6. Times that by 3 to get Dave’s age which is 18. A formula for this (where x is his sisters age) would be 3x=38-7x2 which cancels down to 6.

7 0
4 years ago
35% of 20 is what number
EleoNora [17]
It's 7

Hope I helped! ( Smiles )
8 0
3 years ago
Read 2 more answers
I will give <br> Brainliest
timofeeve [1]

Answer:

yx=yz+ax

Step-by-step explanation:

5 0
3 years ago
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