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Marat540 [252]
3 years ago
10

Factor completely 4x^2-1

Mathematics
2 answers:
kari74 [83]3 years ago
7 0

Answer:

4×^2-1=(2× +1)(2× -1)

Step-by-step explanation:

using a^2 - b^2 =(a+b)(a-b)

alina1380 [7]3 years ago
6 0

Answer:

(2x - 1)(2x + 1)

Step-by-step explanation:

Difference of Squares: (ax + b)(ax - b) = (ax² - b²)

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Which two numbers on the number line has an absolute value of 3?
luda_lava [24]

Solution

             To    find   Which two numbers on the number line has  an

             absolute value of  3  

            Absolute   value   means    " how  far   a  number    is   from  

           zero "  .

           "3"    is    3    away   from   zero  .

           and    " -3 "   is  also   3    away   from  zero  .

           i.e

                    |  0  - 3  |   =   3

                    |  3 - 0 |  =  3

                    So ,  the  absolute   value  of   "3 "    is    3

                   similarly  , absolute  value  of  "3 "   is   3  .

                  Hence  , the  two  numbers   are   -3    and   3

6 0
3 years ago
What is the ratio for 4, 8, 12, 14 (r)
olasank [31]

answer for this question is 2 is to 4 is to6 is to 7

7 0
2 years ago
Eddie's Evergreens sells Christmas trees and wreaths. Trees cost 3 dollars more than 4 times the price of each wreath. It costs
kari74 [83]

Answer:

W = 16

T = 67

Step-by-step explanation:

Represent trees with T and wreaths with W

Given

T = 3 + 4 * W

2 * W + T = 99

Solving (a): Cost of W

Substitute 3 + 4 * W for T in the second equation

2*W + 3 + 4 * W = 99

2W + 3 + 4 W = 99

Collect Like Terms

2W + 4 W = 99 - 3

6W = 96

Divide through by 6

W =\frac{96}{6}

W = 16

Hence, each wreath costs $16

Solving (b): Cost of T

T = 3 + 4 * W

Substitute 16 for W

T = 3 + 4 * 16

T = 3 + 64

T = 67

Hence, each tree costs $67

3 0
2 years ago
The local cable company charges $90 per month for basic and $12 per month for each additional premium cable channel.The function
Alika [10]

Answer:

2 additional premium channels

Step-by-step explanation:

Using the given function, we substitute c(x) = 114 and solve for x:

114 =90 + 12x

Subtract 90 from both sides:

24=12x

Divide both sides by 12:

2=x

So you have ordered 2 additional premium channels.

5 0
3 years ago
There are 10 m of thread on the reel. She use 210 cm. In centimeters. How much is left on the reel
castortr0y [4]

Answer:

The length of the thread which is left on the reel is 790 cm. Used = 210 cm.

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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