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Vinil7 [7]
3 years ago
6

If 2(x + 3) = x + 10, then x equals what

Mathematics
1 answer:
Rama09 [41]3 years ago
8 0

Answer:

x=4

Step-by-step explanation:

To solve this problem you must apply the proccedure shown below:

1. You need to apply the Distributive property on the left member of the equation:

2(x + 3) = x + 10\\ 2x+6=x+10

2. Now, you must solve for x, as following:

2x-x=10-6\\ x=4


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The 2015 American Time Use survey contains data on how many minutes of sleep per night each of 10,900 survey participants estima
Gelneren [198K]

Answer: .C. The population is the 10,900 respondents to the American Time Use Survey.

Step-by-step explanation:

In statistics , Population is refer to a large group of individuals or observations that have same characteristics.

A sample is a  subset drawn from it.

We are given that "The 2015 American Time Use survey contains data on how many minutes of sleep per night each of 10,900 survey participants estimated they get.  An SRS (simple random sample) of 100 of the participants has a mean time of x¯=514.4 minutes. "

i.e. The population is 10,900 respondents to the American Time Use Survey.

4 0
3 years ago
Factor completely 2x2 − 2x − 40
Montano1993 [528]

Answer:

2(x-5)(x+4)

Step-by-step explanation:

2x^2 − 2x − 40

Factor out a 2

2(x^2 -x -20)

What 2 numbers multiply to -20 and add to -1

-5*4 = -20

-5+4 = -1

2(x-5)(x+4)

4 0
3 years ago
plz help me do these please its hard you have to make them into decimals round to the nearest hundreth if nessesery. plz and tha
borishaifa [10]

Answer:

3: 0.625

4: 2.2

7: 1.083

8: 4.285

11: 1.1

12: 0.08

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Can someone help me with this question????
frutty [35]

Answer:

Hi! I think I got the answer, it is a tricky one! The answer I got was C) 1029.

Step-by-step explanation:

1. It is good to first know that 40%more means 1.4 (some number). So, if n is 40% more than the sum of the other three numbers: n= 1.4* (<em>l +m+p)</em> .

2. Also note that: <em>n+l+m+p= </em>1764; so, <em>n = 1764-l-m-p.</em>

3. Since we have two expressions for n, we can equate them to each other. Giving, 1.4* (<em>l +m+p) =1764-l-m-p . </em>Simplifying we get 2.4 (<em>l +m+p)</em>=1764.

4. <em>l +m+p =1764/2=735.</em>

5. 1764-735=1029

Hope that helps! Feel free to message back if there are any questions!

<em />

7 0
3 years ago
What is an algebraic expression?​
Klio2033 [76]

Answer: an expression obtained by a finite number of the fundamental operations of algebra upon symbols representing numbers.

Step-by-step explanation: In mathematics, an algebraic expression is an expression built up from integer constants, variables, and the algebraic operations. For example, 3x² − 2xy + c is an algebraic expression.

3 0
2 years ago
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