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3 years ago

B. 2(3x - 5) = 2x + 6

Mathematics

2 answers:

Leto [7]3 years ago

8 0

Answer:

x = 4

Step-by-step explanation:

Given

2(3x - 5) = 2x + 6 ( divide both sides by 2 )

3x - 5 = x + 3 ( subtract x from both sides )

2x - 5 = 3 ( add 5 to both sides )

2x = 8 ( divide both sides by 2 )

x = 4

gogolik [260]3 years ago

6 0

Answer:

x = 4

Step-by-step explanation:

2(3x - 5) = 2x + 6

expand- 2(3x-5):6x+10

6x-10= 2x+6

Add 10 to both sides

6x-10+10=2x+6+10

simplify

6x=2x+16

subtract 2x from both sides

6x-2x=2x+16-2x

simplify

4x=16

divide both sides by 4

4x/4=16/4

x=4

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In a study of government financial aid for college students, it becomes necessary to estimate the percentage of full-time coll

algol13

Answer:

(a) The sample size required is 2401.

(b) The sample size required is 2377.

Step-by-step explanation:

The confidence interval for population proportion p is:

$CI=\hat p\pm z_{\alpha/2}\sqrt{\frac{\hatp(1-\hat p)}{n}}$

The margin of error in this interval is:

$MOE=z_{\alpha/2}\sqrt{\frac{\hatp(1-\hat p)}{n}}$

The information provided is:

MOE = 0.02

$z_{\alpha/2}=z_{0.05/2}=z_{0.025}=1.96$

(a)

Assume that the proportion value is 0.50.

Compute the value of n as follows:

$MOE=z_{\alpha/2}\sqrt{\frac{\hat p(1-\hat p)}{n}}\\0.02=1.96\times \sqrt{\frac{0.50(1-0.50)}{n}}\\n=\frac{1.96^{2}\times0.50(1-0.50)}{0.02^{2}}\\=2401$

Thus, the sample size required is 2401.

(b)

Given that the proportion value is 0.55.

Compute the value of n as follows:

$MOE=z_{\alpha/2}\sqrt{\frac{\hat p(1-\hat p)}{n}}\\0.02=1.96\times \sqrt{\frac{0.55(1-0.55)}{n}}\\n=\frac{1.96^{2}\times0.55(1-0.55)}{0.02^{2}}\\=2376.99\\\approx2377$

Thus, the sample size required is 2377.

(c)

On increasing the proportion value the sample size decreased.

8 0

4 years ago

Which sign makes the statement true is 1<,>,or =to -8

djverab [1.8K]

Answer:

1<-8

Step-by-step explanation:

From what i believe your asking 1<-8 is how it should go. Because a positive 1 is greater than a negative 8.Anyone correct me if im wrong...

3 0

3 years ago

Read 2 more answers

HELP I NEED HELP ASAP

ValentinkaMS [17]

Answer: B

Explanation:
We can substitute burgers for m and drinks for p, since all burgers are the same price and drinks are the same price, substitute the 3 burgers and 2 drinks into
3m+2p
The only right answer for this equation is $13.50, substitute the 5m+4p=$23.50 and your only right answer is B

4 0

3 years ago

Add, subtract, multiply or divide all for of these numbers to get a result equal or close to 51.

Elis [28]

7*8-6+5=55

6*5+7+8=45

5*7+8+6=49

I will continue in the comments

4 0

3 years ago

Identify all of the radii circle o

Olegator [25]

Answer:

The radii are OA , OB and OC

Explanation:

The radius of the circle is defined as the line joining between the center of the circle and a point that lies on the circumference of the circle

In the given circle:

The center is "O"

The three points that lie on the circumference are A, B and C

Based on the above definition, the three radii would be:

OA, OB and OC

Hope this helps :)

4 0

4 years ago