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drek231 [11]
3 years ago
5

Expand and simplify : 3(2x+1)+2(x+3)

Mathematics
1 answer:
kolezko [41]3 years ago
4 0
I think is 8x+9 because i was trying to simplify-it and it keep coming out that
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Single adults: According to a Pew Research Center analysis of census data, in 2012, 20% of American adults ages 25 and older had
Mumz [18]

Answer:

The mean of the sampling distribution of sample proportions will be 0.2

Step-by-step explanation:

Central Limit Theorem for Proportions:

For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean \mu = p and standard deviation s = \sqrt{\frac{p(1-p)}{n}}

20% of American adults ages 25 and older had never been married.

This means that p = 0.2

So the mean of the sampling distribution of sample proportions will be 0.2

3 0
3 years ago
Beginning with an integer $n,$ Jake goes through the following steps: $\bullet$ 1. Take the reciprocal of the starting number. $
evablogger [386]

Answer: n= 32

Jakes started with 32

Step-by-step explanation:

Let n represent the initial integer.

Step 1: take the reciprocal.

Reciprocal of n = 1/n

Step 2: double the number obtained in step 1

= 2×1/n = 2/n

Step 3: take the reciprocal of the number obtained in step 2.

Reciprocal of 2/n = n/2

Since he ended up with 16

n/2 = 16

n = 2×16 = 32

4 0
3 years ago
Read 2 more answers
How much does the atmosphere weigh over each square meter of surface? express this in tonnes (units of 1000 kg). recall the conv
Anettt [7]
Atmospheric pressure = 101,325 Newtons / m²
Weight per meter square = 101,325 Newtons
Mass per meter square = 101,325 / (9.81 x 1000)
Mass per meter square = 10.3 tonnes per m²
7 0
3 years ago
Fred salmon purchased six 1000 bonds at 92. the bonds pay 6.5%
Feliz [49]
I think that's what you mean

6 0
3 years ago
Which of the following quadrilaterals have diagonals that are perpendicular to each other? Check all that apply.
mars1129 [50]

Answer: Option B and option D.

Step-by-step explanation:

We know that a quadrilateral is a 2-dimensional closed shape that has four sides.

By definition the diagonals of a quadrilateral are the lines that connect two non-adjacent vertices.

The following quadrilaterals have diagonals that are perpendicular to each other (also known as perpendicular bisector diagonals), which means that they form four angles of 90 degrees (right angles): <em>Rhombus and Square.</em>

Therefore the answers are: the option B and the option D.

4 0
3 years ago
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