3.2n as a algebraic expression

Answer: [tex]300[/tex] [tex]times[/tex]

Step-by-step explanation:

Answer:

58.07 > 58.4 is false.

29.6 = 29.600 is true.

140.23 < 140.203 is false.

108.505 > 108.5 is true.

A,B helps it help if you doubt used calculator

Answer:

i think the answer is B

Step-by-step explanation:

7x + 3 = 9x - 3 - 2x

7x - 9x + 2x = -3 - 3

0 = -6

equation doesn't have any solution

Answer:

First make sure the both weights have the same units.

Take your experimental yield and divide it by the theoretical yield.

Multiply this value by 100 to find the percent yield.

The expressions that is equivalent to log (12/5) would be A. log (12) - log (5).

When you raise a number with an exponent, there comes a result.

Lets say you get

a^b = c

Then, you can write 'b' in terms of 'a' and 'c' using logarithm as follows

b = \log_a(c)

'a' is called base of this log function. We say that 'b' is the logarithm of 'c' to base 'a'

We have given an expression as ;

log (12/5)

We know that

[tex]log_a(b) - \log_a(c) = \log_a(\frac{b}{c})[/tex]

So,

log (12/5) = log (12) - log (5)

Thus, the correct option is A. log (12) - log (5)

The expressions that is equivalent to log (12/5) would be A. log (12) - log (5).

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Answer:

circle graph

Step-by-step explanation:

Answer:

The answer is circle graph

Step-by-step explanation:

Answer:

The first one = add three matches to the right side(on horizontal, two that or on top and bottom vertically.)

Second: Start with 5, and keep adding 3 until 26. 5 + 3+3+3+3+3+3+3

Or (26-5)/3 = 21/3 = 7

7 additions are needed so 7+1 = 8

Third: I believe you can answer this with this info

Step-by-step explanation:

Answer:

That is a division equation.

Step-by-step explanation:

Answer:

a) By the Central Limit, the sampling distribution of the sample proportion of American adults worried about global warming is approximately normal with mean 0.3 and standard deviation 0.0142.

b) 0.0002 = 0.02% probability that the sample proportion from a random sample of 1048 adults who are worried about global warming is above 35%.

c) Yes, as 35% already has a z-score above 2, which means that any value above 35%, including 40%, would be unusual.

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

If the z-score is lower than -2 or greater than 2, the measure X is considered unusual.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

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

30% of American adults were worried about global warming.

This means that [tex]p = 0.3[/tex]

(a) Describe the sampling distribution of the sample proportion of American adults worried about global warming for a random sample of 1048 American adults.

Sample of 1048 means that [tex]n = 1048[/tex]

The mean is [tex]\mu = p = 0.3[/tex]

The standard deviation is [tex]s = \sqrt{\frac{p(1-p)}{n}} = \sqrt{\frac{0.3*0.7}{1048}} = 0.0142[/tex]

By the Central Limit, the sampling distribution of the sample proportion of American adults worried about global warming is approximately normal with mean 0.3 and standard deviation 0.0142.

(b) (3 points) Compute the probability that the sample proportion from a random sample of 1048 adults who are worried about global warming is above 35%.

This is 1 subtracted by the pvalue of Z when X = 0.35. So

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

By the Central Limit Theorem

[tex]Z = \frac{X - \mu}{s}[/tex]

[tex]Z = \frac{0.35 - 0.3}{0.0142}[/tex]

[tex]Z = 3.53[/tex]

[tex]Z = 3.53[/tex] has a pvalue of 0.9998

1 - 0.9998 = 0.0002

0.0002 = 0.02% probability that the sample proportion from a random sample of 1048 adults who are worried about global warming is above 35%.

(c) (2 points) Based on your answers above, do you think it would be unusual to get 40% of 1048 randomly selected American adults being worried about global warming

Yes, as 35% already has a z-score above 2, which means that any value above 35%, including 40%, would be unusual.

Answer:

A

Step-by-step explanation:

Got it right

The correct division for using the Area Method to draw the trend line is shown by Option A.

A scatter plot is the plot that consists of data that is randomly spread and doesn't have a fixed pattern , A trend has to be determined from the data to understand the pattern.

The given scatter plot shows an upstream and a downstream , The correct division will be from the point where it start following a fixed pattern , Which is in the Option A attached.

Therefore The correct division for using the Area Method to draw the trend line is shown by Option A.

The missing Options are attached with the answer

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Answer:

Im not sure about my answer but um 11.59 maybe ? sorry if i'm wrong...

Step-by-step explanation:

1.74 x 3= 5.22                     1.74 / 3 = 0.58                    6.96 + 0.58 = 7.54

1.92 x 2= 3.84                     1.92 / 9 = 0.21                     3.84 + 0.21 =4.05

                                        7.54 + 4.05 = 11.59

Answer: I think 6 x 10^-4 has the greatest value.

Step-by-step explanation:

Answer:

h=78

c=106

Step-by-step explanation:

Answer:

h = 78

c = 106

Step-by-step explanation:

h - 53 = 25

h = 25 + 53

h = 78

c - 72 = 34

c = 34 + 72

c = 106

Answer:

-4°

Step-by-step explanation:

4 + 8 = 12

12 - 16 = -4

The temperature was -4 at 9pm

Answer:

10 i think

Step-by-step explanation:

theres 10 x's

Answer:

10?

Step-by-step explanation:

i just counted the x's

Answer:

5x + 3y = 15 are (3,0) and (0,5).

Step-by-step explanation:

To learn how to find the x intercept, we will change the y for 0 and solve for x.

Answer:

Step-by-step explanation:

A large aquarium has a length of 84 inches. It is located in a large basement that is properly heated and ventilated. The width should be close to 1/2 the length and the height ought to be 1/6 the length. If the fish tank requires that an aerator be placed every 28 inches along the back edge, how many aerators are needed. Note: an aerator is not placed in either corner.

Width =_________________

Height= ________________

Aerators = ______________

Find the number of cubic inches of the fish tank. If an aerator will provide enough oxygen to aerate  5 cubic feet,, do you have enough aerators for the fish to live comfortably? If the answer is no, then how many aerators do you need?

Answer:

10.5 i think

Step-by-step explanation:

Answer:  0.63803681

Step-by-step explanation:

652/416 simplified= 163/10

then just divide bc its easier.

hope it helped :))

Answer:

0.63803680981

Step-by-step explanation:

First, you can see there is no way to divide 652 into 416. So, you need to add a decimal to 416. Then, you would multiply 652 by 6 and get 3912. You subtract 3912 by 4160 and get 248. Then, you add a 0 to that number. And then, you would keep repeating the steps. Decimal, multiply, subtract.

Answer:

The other equation could be: 6y = 4x - 18

Step-by-step explanation:

System with infinite number of solutions:

A linear system has an infinite number of solutions when one equation is a multiple of another.

One of the equations of the system is 3y = 2x - 9. Which could be the other equation?

A multiple of 3y = 2x - 9

Multiplying by 2, the other equation could be: 6y = 4x - 18

Answer:

B: y=2/3 x -3

Step-by-step explanation:

I got it right on Edge

9514 1404 393

Answer:

  31 square inches

Step-by-step explanation:

You can divide the shape into pieces several ways. The total area will be the sum of the areas of the pieces.

If we draw a horizontal line across the figure 2 inches up from the bottom, the figure is divided into a triangle and two rectangles.

The triangle has a base of 8 -3-2 = 3 inches, and a height of 4 -2 = 2 inches. Its area is ...

  A = (1/2)(3 in)(2 in) = 3 in²

The rectangle below the line has a base of 8 inches and a height of 2 inches. Its area is ...

  A = bh = (8 in)(2 in) = 16 in²

The rectangle above the line has a base of 3 inches and a height of 4 inches. Its area is ...

  A = bh = (3 in)(4 in) = 12 in²

Then the total area of the figure is ...

  (3 + 16 + 12) in² = 31 in² . . . . the area of the figure

Answer:

Exact form: 5/2

Decimal form: 2.5

Mixed number form: 2 and 1/2

Step-by-step explanation:

when you divide a fraction you keep, change, flip

Equation: 5/8 ÷ 1/4

keep 5/8 the same

change the divide symbol into a multipulcation symbol

flip 1/4 the other way, so it's 4/1 (it's a whole number now)

then just multiply across

Equation now: 5/8 × 4/1

Answer:

Step-by-step explanation:

(-1)³·(-1)² = (-1)·(1) = -1

Alternatively,

(-1)³·(-1)² = (-1)³⁺² = (-1)⁵ = -1