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Mama L [17]
2 years ago
6

Which expression is equivalent to 0.7×0.23

Mathematics
2 answers:
Len [333]2 years ago
8 0

Answer:

o D (7x\frac{1}{10} )x(23x\frac{1}{100})

Step-by-step explanation:

0.7×0.23

is equivqlent to:

(7 x 1/10) x (23 x 1/100)

Marina CMI [18]2 years ago
3 0
The answer is D because when multiplied by 1/10 you move the decimal place of 7 one space to the left so 7 now equals .7 and when multiplied by 1/100 23 is moved two spaces to the left to make .23
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neonofarm [45]

Answer:

I believe the answer is 3. Im not sure so sorry if you get it wrong

7 0
3 years ago
X puᴉɟ oʇ ǝʌɐɥ noʎ<br><br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%20%7B%7D%5E%7B2%7D%20%7D%7B5%20%7B%7D%5E%7B2%7D%20%7D
Law Incorporation [45]

Hello there! The value of x is 20 or -20

"20 or - 20" is one answer so you are supposed to answer 20 or -20, not choose only one.

Step-by-step explanation:

\large{ \frac{ {x}^{2} }{ {5}^{2} }  =  {4}^{2} }

First, we simplify 5² and 4²

\large{ \frac{ {x}^{2} }{25}  = 16}

Multiply the whole equation by 25 to get rid of the denominator.

\large{ \frac{ {x}^{2} }{25} (25) = 16(25)} \\  \large{ {x}^{2}  = 400}

Square both sides and solve the equation.

\large{ \sqrt{ {x}^{2} }  =  \pm{ \sqrt{400} }}

Also don't forget to write "plus or minus" symbol when we are solving a quadratic equation by squaring both sides.

\large{x = \pm{20}}

4 0
2 years ago
Simplify: (3x 2y -2) 3 / (9xy 3) 3
Dafna11 [192]

Answer:

0

Step-by-step explanation:

Ⓗⓘ ⓣⓗⓔⓡⓔ

Well, what I would do is line it up so you can cancel things out. I.e.:

(3x*2y-2)3

(9xy*3)3

Both of the 3s can cancel out

3x*2y-2

9xy*3

2y-2

3y*3

2y/3y-2/3=2/3-2/3=0

(っ◔◡◔)っ ♥ Hope this helped! Have a great day! :) ♥

Please, please give brainliest, it would be greatly appreciated, I only need one more before I advance, thanks!

6 0
3 years ago
Hi pls help answer this!
Morgarella [4.7K]

Answer:

363-138=-5x

Step-by-step explanation:

Let c = cost

We know that the total cost is $363:

363-??????

We also know that he spent $138 on parts:

363-138?????

And we are solving for the cost of labor per hour:

363-138=5x

We can use this equation to find the total cost of labor per hour.

Hence, your equation will be 363-138=5x

7 0
2 years ago
Wen is factoring the polynomial, which has four terms.
Firdavs [7]

Answer:

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

Step-by-step explanation:

Given

4x³ + 10x² - 6x ← factor out 2x from each term

= 2x(2x² + 5x - 3) ← factor the quadratic

Consider the factors of the product of the coefficient of the x² term and the constant term which sum to give the coefficient of the x- term

product = 2 × - 3 = - 6 and sum = + 5

The factors are + 6 and - 1

Use these factors to split the x- term

2x² + 6x - x - 3 ( factor the first/second and third/fourth terms )

= 2x(x + 3) - 1(x + 3) ← factor out (x + 3) from each term

= (x + 3)(2x - 1)

Thus

4x³ + 10x² - 6x = 2x(x + 3)(2x - 1) ← in factored form

5 0
2 years ago
Read 2 more answers
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