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Helen [10]
3 years ago
6

How do I solve this math Distribute and Combine Like Terms Maze 7+7(7n-9)

Mathematics
2 answers:
swat323 years ago
8 0
You multiply what’s in the parentheses first so it would be 7x7n which equals 49n and then 7x-9 which equals -63 so it would be 7+49n- 63
Bingel [31]3 years ago
7 0
7+7(7n-9)
7+49n-63
49n-56
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Rewrite the expression ????^2 + 4???? + 3, first by factoring and then by completing the square. Which way is easier?
yanalaym [24]

Answer:

Factoring

(x+3) (x+1)

Completing the square

(x+2)^2 +(-1) = (x+2)^2 -1

For this case seems more complicated the option completing the square because we need to do more operations and we need to know algebra. By the other hand for the Factoring case we just need to find two numbers that satisfy the conditions required.

Step-by-step explanation:

Assuming the following expression:

x^2 +4x +3

Factoring

For this case we want to find two values that added would be 4 and multiplied would be 3. On this case these two values are 3 and 1 because 3+1=4 and 3*1 =3. So then we can factor the expression like this:

(x+3) (x+1)

Completing the square

For this case if we want to complete the square we need to do this:

x^2 +4x + (\frac{4}{2})^2 +3 - (\frac{4}{2})^2

And if we simplify this we got:

(x^2 +4x +4) +3-4

(x+2)^2 +(-1) = (x+2)^2 -1

For this case seems more complicated the option completing the square because we need to do more operations and we need to know algebra. By the other hand for the Factoring case we just need to find two numbers that satisfy the conditions required.

7 0
3 years ago
50 points hurry!!!!! <br> find what belongs in the missing/blocked out line.
andrezito [222]

Answer:

4+7(11)

Step-by-step explanation:

the square root of 121 is 11 so it would be 4+7(11)

6 0
3 years ago
PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! I DONT KNOW HOW TO GRAPH SO
xz_007 [3.2K]

Answer:

(-1, -2) will be the solution.

Step-by-step explanation:

System of equations has been given as,

y = 3x + 1 ---------(1)

Input-output value table for the given line will be,

x       -2        -1          0          1

y      -5        -2         1           4

y = -x - 3 ----------(2)

Input-output value table for the given line will be,

x        -2         -1           0           1

y       -1          -2          -3         -4  

By plotting the given coordinates we can draw the straight lines.

And the point of intersection (common point) of these lines will be the solution of the given system of equations.

Hence, (-1, -2) will be the solution.

4 0
3 years ago
I need step by step help with: 3x^1/3 + 2x^2/3 =5
Luba_88 [7]
If you write y=x^{1/3}, you'll notice this is really just a quadratic equation that can be factorized:

2x^{2/3}+3x^{1/3}-5=0\iff 2y^2+3y-5=0\iff (2y+5)(y-1)=0\iff(2x^{1/3}+5)(x^{1/3}-1)=0

So you have

2x^{1/3}+5=0\implies 2x^{1/3}=-5\implies x^{1/3}=-\dfrac52\implies x=-\dfrac{125}8

and

x^{1/3}-1=0\implies x^{1/3}=1\implies x=1
5 0
3 years ago
Is this correct?<br> Someone please help me
attashe74 [19]

yes it is correct kip it up

3 0
2 years ago
Read 2 more answers
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