Simplify
(3x - 1)(3x + 1) - (2x + 7)(2x - 7)



Please help I need to review for my test tomorrow

Answer: 4x+1 3/4=10

Step-by-step explanation: Took the test. Plus you can check to see if it equals to - 10 = 10 by replacing x with 2 1/16. Example: 4 * 2 1/16 + 1 3/4 =10. So 10 = 10 is a true match.

The given case can be represented as the equation 4x + 13/4 = 10.

A system of linear equations can be defined as a number of equations needed to solve the equations. For n number of variables n number of equations are required.

Given that,

The length of board = 10 feet.

The length of piece that is cut first = 13/4 feet.

Suppose the length of each remaining piece cut into four equal parts is x feet.

Now, the expression for the total length of the board can be given as the sum of the total length of the remaining piece and the the piece that is cut first.

In mathematical form it can be written as,

4x + 13/4 = 10

Hence, the equation for the given case is 4x + 13/4 = 10.

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9514 1404 393

Answer:

  P(E') = 12/13

Step-by-step explanation:

If E is the event "a 10 is drawn", then its probability is 4/52 = 1/13, because there are 4 cards in the deck that are 10s. The probability of E' is the complement of this:

  P(E') = 1 -P(E) = 1 -1/13

  P(E') = 12/13

[tex]\sf \Large \boxed{\displaystyle \sf \frac{12}{13} } \\\\\\ 10 \ of \ spades \ or\ 10 \ of \ clubs \ or\ 10 \ of \ diamonds \ or\ 10 \ of \ hearts \\\\4 \ cards \ from \ the \ 52 \ are \ tens\\\\48 \ are \ not \ tens\\\\\displaystyle \frac{48}{52} =\frac{12}{13}[/tex]

Answer:

you multiply the same number by each other and check if it matches squareroot number

Step-by-step explanation:

Answer:

75 po ang sagot

Step-by-step explanation:

pa brailess 1x po pls

Answer:

x < -4

-64/16 = -4

Answer is 2/3

because

16/3 / 8=2/3

Answer:

Four over nine looks like 4/9 and 2 over nine looks like 2/9.

Since they have the same denominator, which is 9, 4/9 would be bigger than 2/9, because 4 is bigger than 2.

Step-by-step explanation:

Hope this helps you :)

Answer:

28

Step-by-step explanation:

4 / 7 * x = 16

4 * x = 16 * 7

x = 4 * 7

x = 28

Answer:

the answer would be 28 becuase you would factor the numerator and denominator and cancel out the commen factors. i could explain more if needed :)

Answer: Strong positive association

Hope this help

Step-by-step explanation: can i get the crown

Answer:

n = 26

Step-by-step explanation:

Solve the rational equation by combining expressions and isolating the variable  

n.

Answer: Well I would say Jones Act, any vessel can enter Puerto Rico. In fact, many foreign vessels enter Puerto Rico regularly, importing goods from countries around the world. However, transportation of goods between two U.S. ports must be carried out by a vessel that was built in the U.S. and operated primarily by Americans.

Step-by-step explanation:

Answer:

The answer is C

Step-by-step explanation:

Answer:

h = 209

Step-by-step explanation:

So we want to solve h, therefore, we must get it by itself on one side. We can do that by somehow removing the three that is with h. So how could we do that? Well, by multiplying h/3 by 3, we get h because the threes cancel out. However, whatever we do to one side, we must do it to the other too because then the equation does not hold true. So, 3 x (69 + 2/3) = 209

Answer:

Basically the first image goes in the first box because opposites attract and the second image is what happens when you let the magnets go. The third image would go into the second chart because same-sides repel each other and the fourth picture shows what happens if you let the magnets that have the same sides facing each other go.

Step-by-step explanation:

'D'

本题已由中国数学会官方解答（现有会员：3人）  

D.

[tex]16 - (6.25 + 2 \times 2.25)[/tex]

Answer:

C. 3y/4x²

Step-by-step explanation:

12x/2y*3y²/24x³=12/2*3y/24x²

                           =6*y/8x²

                           =6y/8x²

                           =3y/4x²

Answer:

j = -23

Step-by-step explanation:

Answer:

[tex]\frac{6x^2+3x-1}{x^{\frac{3}{2} } }[/tex]

Step-by-step explanation:

[tex]610 \times t = d[/tex]

Step-by-step explanation:

[tex]915 \: \: divided \: \: by \: \: 1.5 = 610[/tex]

2. Turn it into a equation

well I try my best

Answer:

Step-by-step explanation:

Is 3000025

Step-by-step explanation:

25+ 3000000= 3,000,025

Answer:

Answer

4)net income

Step-by-step explanation:

answer

Answer:

Y = -1/4x + 2

Step-by-step explanation:

Found the answer by doing rise over run. Rise = 1  Run = -4

Answer:

x = 23

Step-by-step explanation:

simplify both sides of the equation then isolate the variable.

Answer:

x = 23

Step-by-step explanation:

x/20 + 20 ( -2/5 )/20 = 3/4

combine fractions with common denominator

x - 8/20 = 3/4

Multiply all terms by the same value to eliminate fraction denominators

20 . x - 8/20 = 3/4 = 20. 3/4

Cancel multiplied terms that are in the denominator

x - 8 = 20 . 3/4

Multiply the numbers

x - 8 = 15

Add 8 to both sides of the equation

x - 8 + 8 = 15 + 8

simplify

add the numbers

x = 23

Answer: 8a

Step-by-step explanation:

3a + 5a

8a

Answer:

1/3 probability

4 + 4 + 4 = 12

4/12 = 1/3

Step-by-step explanation:

Answer:

5√2

Hope this helps!

Answer:

11

Step-by-step explanation:

You can plug it inot a calculator, or can make a factor tree, in which the 2 factors would be 11, so 11^2=121 and [tex]\sqrt121[/tex]=11

Answer:

11

Step-by-step explanation:

its something you basically have to just memorize and know... i dont know how to explain it, but like basically not all numbers have an even number square root. to have an even number for a square root, the number has to be able to be divided by the same 2 numbers. like 121, for it to have a whole number square root, it has to be able to be divided by 2 same numbers. or doubles... 11 times 11

11 squared is 121

square root of 121 is 11

hope this helps.

mark me brainliest :D