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natali 33 [55]
3 years ago
9

Can someone please help me?

Mathematics
1 answer:
Nookie1986 [14]3 years ago
8 0

Answer:

-3 • (x - 7)

Step  1  :

6x -  3 • (3x - 7)

Step 2:

21 - 3x  =   -3 • (x - 7)

Final result :

-3 • (x - 7)

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Factor completely, then place the answer in the proper location on the grid.<br><br> a^6 - 25b^2
Solnce55 [7]
This is the difference of 2 squares 

square root of a^6  = a^3
and square root of 25 b^2  = 5b  so we get 

(a^3 + 5b)(a^3 - 5b)

Thats the answer
5 0
3 years ago
John was given the equation 4(2a + 3)= -3(a - 1) + 31 - 11. Some steps an their reasons have already been completed. State a pro
cestrela7 [59]

Answer:

- Disitributive property.

- Addition property of equality.

Step-by-step explanation:

The complete exercise is attached.

For this exercise you need to remember the following properties:

1. The Distributive property states that:

c(a+b)=ac+bc\\\\c(a-b)=ac-bc

2. The Addition property of equality states that:

If\ a=b\ then\ a+c=b+c

Then, given the equation:

4(2a + 3)= -3(a - 1) + 31 - 11a

You can identify that the first property John used was the Distributive property:

(4)(2a) + (4)(3)= (-3)(a) +(-3)(- 1) + 31 - 11a\\\\8a+12=-3a+3+31-11a

After combining like terms, you can identify that the next  property he applied was the Addition property of equality, adding 14a to both sides of the equation:

8a+12+(14)=-14a+34+(14)\\\\22a+12=34

8 0
4 years ago
I need help! Really bad a math.​
Alex17521 [72]

Answer:

-72

Step-by-step explanation:

Substitute -4 in the equation

h(-4) = -20 + 13(-4)

h(-4) = -20 + -52

h(-4) = -72

-72 is the final answer

8 0
3 years ago
Read 2 more answers
PLEASE HELP I DONT KNOW WHAT TO DO !! I APPRECIATE IT IF YOU HELP ME !
attashe74 [19]

Answer:

x = ±20

Step-by-step explanation:

x^2 -1=399

Add 1 to each side

x^2 = 399+1

x^2 = 400

Take the square root of each side

sqrt(x^2) = ±sqrt(400)

x = ±20

8 0
3 years ago
A sign next to a roller coaster at an amusement park says, “You must be at least 60 inches tall to ride.” Noah is happy to know
gtnhenbr [62]

Answer:

x>60 or x=60

Step-by-step explanation:

The must be 60 or more inches.

8 0
3 years ago
Read 2 more answers
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