Do you know how to do 2 2/3x 5

Answers

Answer 1
Answer: It would be 2 10/15 be course time the bottom and top
Answer 2
Answer: is going to be 3 1/3

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Show work and help PLEASE 5 6 7 and 8 please

Write each decimal in words 0.214

Answers

Two hundred fourteen thousandths ( Don't add the "and" between hundred and fourteen because they will think the number 0.214 is actually written like 200.14)

Please help me I beg you! :(

Answers

Question 6

x² - 16 = 0
x² = 16
x² = √16
x = 4 or -4

Question 7

x²  + 3x - 54 = 0
Factorizing

Find two numbers that add to make 3x and multiply to make 54
Write out the factor of -54 in pairs
1, -54
-1, 54
2, -27
-2, 27
3, -18
-3, 18
4, -16
-4, 16
6, -9
-6, 9
Then find the pair that, when added = +3 (in bold)
-6 + 9 = 3

x² + 9 - 6x - 54 = 0
x(x + 9)      -6(x + 9)

Use the (x + 9) and the coefficient of these brackets to make double brackets.
(x+9)(x-6) = 0

If the product of two terms =0, at least one must equal 0

x + 9 = 0
x = -9

x - 6 = 0
x = 6

x = -9 or 6


Question 8

2x² -11x - 6 = 0

First, multiply the coefficient of x² by the value of c (the number on its own)2 x -6 = 12

This time, find factors of -12 that equal -11
1, -12
-1, 12
2, -6
-2, 6
3, -4
-3, 4
The pair is in bold
1 + -12 = -11

2x² -12x + x - 6
Split down the middle and factorise in singe brackets
2x(x - 6)        1(x - 6)
Now use the brackets pre-made (x - 6) and put together what is in front of them (2x +1)
(2x + 1)(x - 6)

 If the product of two or more terms = 0, at least 1 must equal 0
2x + 1 = 0
2x = -1
2x/2 = x       -1/2 = -0.5

x - 6 = 0
x = 6

x = -0.5 or 6

Question #6:
They expect you to remember that the difference
of two squares can be factored as 

   (the sum of the squared numbers) times (their difference).

So   [ x² - 16 = 0 ]  can be written as  (x + 4) (x - 4) = 0 .

Now, a rule that you've used hundreds of times before
and you'll use thousands of times again: 
If the equation says that the product of two things is zero,
then the equation is true if EITHER of them is zero.

So ...  
(x+4) = 0 gives you one solution,
and (x-4)=0 gives you the other solution.
__________________________________

Question #7:

Factor the left side of the equation.

       (x + 9) (x - 6) = 0 .

Now, use a rule that you heard somewhere VERY recently:
If the equation says that the product of two things is zero,
then the equation is true if EITHER of them is zero.

So ...
(x + 9) = 0 gives you one solution, and
(x - 6) gives you the other one.
_______________________________________

Question #8:

Factor the left side of the equation:

           (2x + 1) (x - 6) = 0

Now use the golden rule that you've memorized by now:
If the equation says that the product of two things is zero,
then the equation is true if EITHER of them is zero.

So ...
(2x + 1) = 0 gives you one solution,
and (x - 6) = 0 gives you the other one.



HELP!! ANYONE, PLEASE HELP ME

Answers

go along the x axis to 11.30
look up from there until you reach the line
the go across to the y axis and that is the mass :)

When you calculate it it goes around 4.8 or something like that

Help help help help help

Answers

I would assume the answer is .775.

thats not the simplest form since there is a decimal multiply 10 than simplify by dividing 5 when you keep on simplifying this gives you 31/40 and that would be the simplified version.

Please mark brainliest.

X^-2+4x^-1+3=0 solve by making appropriate substitution

Answers

ANSWER

x =  - 1 \: or \: x =  -  (1)/( 3)

EXPLANATION

The given equation is:

{x}^( - 2)  + 4 {x}^( - 1)  + 3 = 0

Recall that:

{a}^( - m)  =  \frac{1}{ {a}^(m) }

\frac{1}{ {x}^(2) }  +  (4)/(x)  + 3 = 0

Or

{( (1)/(x) )}^(2)  + 4( (1)/(x) ) + 3 = 0

Let

u =  (1)/(x)

Our equation then becomes:

{u}^(2)  + 4u + 3 = 0

The factors of 3 that add up to 4 are:

{u}^(2)  + 3u + u + 3

u(u + 3) + 1(u + 3) = 0

(u + 1)(u + 3) = 0

u + 1 = 0 \: or \: u + 3 = 0

u =  - 1 \: or \: u =  - 3

This implies that:

(1)/(x)  =  - 1 \: or \:  (1)/(x)  =  - 3

x =  - 1 \: or \: x =  -  (1)/( 3)

Question on circumference, photo attached.

Answers

The answer is 25.1327 (and so on)

So that rounded is 25.1 

or 

just 25