Find the value of x.
b
(23x+1)
52°
3

Answer:

2(2x+6) is the same problem in a different format.

Step-by-step explanation:

Distribute the 2 to each place which gives you 4x+12

Answere : 4 times (x + 3)

Answer:

A

Step-by-step explanation:

the answer is a

Answer:

22.5 Pounds

Step-by-step explanation:

This is correct because i did it on Big Ideas and got it correct with 22.5.

Answer:

man thats hard

Step-by-step explanation:

Answer:

65 ft

Step-by-step explanation:

You can find the length of the hypotenuse using the formula a^2+b^2=c^2 where c is the hypotenuse and the other two sides are a and b.

16^2=256

63^2=3969

256+3969=4225

4225=c^2

Get c by itself by taking the square root of both sides.

This leaves you with c=65

Answer:

The estimate of the percentage of millionaires in each of these cities:

                          Bridgeport      San Jose    Washington    Lexington Park

                                CT                 CA               D.C.                MD

Percentage of

Millionaires             9%                 12%              9%                 8.3%

Step-by-step explanation:

Data and Calculations:                            City

                            Bridgeport,     San Jose,   Washington,   Lexington Park,

Millionaire                   CT                 CA              D.C.                 MD

Yes                             45                  36               36                    33

No                              455               264             364                 367

Sample                      500               300             400                 400

Percentage of

 Millionaires            45/500         36/300         36/400           33/400

=                               0.09               0.12             0.09            0.0825

=                                 9%                 12%              9%               8.3%

Using the percentage concept, it is found that the estimate of the percentage of millionaires in these cities is of 9.25%.

The percentage of an amount a over a total amount b is given by a multiplied by 100% and divided by b, that is:

[tex]P = \frac{a}{b} \times 100\%[/tex]

Researching the problem on the internet, it is found that:

Then:

[tex]P = \frac{148}{1600} \times 100\% = 9.25\%[/tex]

The estimate of the percentage of millionaires in these cities is of 9.25%.

More can be learned about the percentage concept at https://brainly.com/question/10491646

104.00

vdybshdbdidbeuvei

heydubeuheisnsndu

Answer:

I have #1, answer is 400

Step-by-step explanation:

80% of 500 is 400

Answer:

First one is 400

Step-by-step explanation:

Answer:

527.52 cm²

Step-by-step explanation:

Area of the shaded region = area of the outer circle - area of the inner circle

Area of circle is given as πr²

Radius of inner circle = 11 cm

Area of outer circle = 17 cm

π = 3.14

Thus:

Area of shaded region = 3.14*17² - 3.14*11²

= 907.46 - 379.94

= 527.52 cm²

Answer:

[tex]f(x) = \left \{ {{39.99; 0 \le x \le 450} \atop {0.45x - 162.51; \ x>450}} \right.[/tex]

Step-by-step explanation:

Given

Charges: $39.99 for first 450 minutes

Charges: $0.45 for additional minutes

(a): What is x

x represents the total minutes

(b): What is f(x)

f(x) represents the total monthly cellular charges

(c): The piecewise function

For the first 450 minutes, the function is:

[tex]f(x) = 39.99;\ 0 \le x \le 450[/tex]

For additional minutes.

In (a), the total minutes is x.

So, we have:

Total Charges = Charges for first 450 minutes + Charges for additional minutes * (Minutes after 450 minutes)

[tex]Total\ Charges = 39.99 + 0.45 * (x - 450)[/tex]

[tex]f(x) = 39.99 + 0.45 * (x - 450)[/tex]

Open bracket

[tex]f(x) = 39.99 + 0.45x - 0.45 * 450[/tex]

[tex]f(x) = 39.99 + 0.45x - 202.5[/tex]

Collect Like Terms

[tex]f(x) = 0.45x+39.99 - 202.5[/tex]

[tex]f(x) = 0.45x-162.51[/tex]

The range of the above function is: x > 450.

So, the piecewise function is:

[tex]f(x) = \left \{ {{39.99; 0 \le x \le 450} \atop {0.45x - 162.51; \ x>450}} \right.[/tex]

Answer:

$1.35

Step-by-step explanation:

$0.09/5 = $0.018

75 x $0.018 = $1.35

can i be brainiest...

The answer you are looking for is called a

Decimal

Have a beautiful day!

Answer:

0.001 = 0.1% probability that a sample of this size would have a mean of 64.82 inches or less.

Step-by-step explanation:

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

Normal probability distribution

When the distribution is normal, we use the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore 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 pvalue, we get the probability that the value of the measure is greater than X.

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.

The heights of adults in a certain town have a mean of 65.42 inches with a standard deviation of 2.32 inches.

This means that [tex]\mu = 65.42, \sigma = 2.32[/tex]

Sample of 144:

This means that [tex]n = 144, s = \frac{2.32}{\sqrt{144}} = 0.1933[/tex]

Find the probability that a sample of this size would have a mean of 64.82 inches or less.

This is the pvalue of Z when X = 64.82. So

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

By the Central Limit Theorem

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

[tex]Z = \frac{64.82 - 65.42}{0.1933}[/tex]

[tex]Z = -3.1[/tex]

[tex]Z = -3.1[/tex] has a pvalue of 0.001

0.001 = 0.1% probability that a sample of this size would have a mean of 64.82 inches or less.

Answer:

C.8/1125 is the answer......

Answer: (E) Not necessarily, because this wasn't an experiment

Step-by-step explanation:

As much as the results would suggest that the fast-paced music was responsible for the faster finishing time, this conclusion cannot be authoritatively made because this was not technically an experiment but rather a test to satisfy curiosity.

An experiment is planned and is scientific. It has more stringent requirements that ensure causation that Roshanda did not meet before she engaged in this trial so we cannot say for a fact that her findings are objective.

Answer: C. yes, the students were randomly assigned to treatment and control groups.

Step-by-step explanation:

Answer:

y = [tex]\frac{2}{3}x[/tex] + 6

Step-by-step explanation:

The graph of r = -3 + 5cosθ is symmetric about the option (B) x axis only

In mathematics, symmetry has a more precise definition, and is usually used to refer to an object that is invariant under some transformations; including translation, reflection, rotation or scaling.

Given that,

The graph of r = -3 + 5cosθ is symmetric about what?

When we plot the graph we can say that it is symmetric about x axis only.

Hence, the graph of r = -3 + 5cosθ is symmetric about the option (B) x axis only

Learn more about Symmetry click;

brainly.com/question/16180199

#SPJ3

Answer:

a) Three ways of describing the representative or typical temperatures are the mean, median, and mode.

The mean = 5.  This is the average temperature.  It is calculated by adding up the varying temperatures each year and dividing by 10.

Median = 5.5.  This is the middle value in the temperature table.  There are two middle numbers (5 and 6) in the dataset.  They are added and divided by two.

Mode = 6.  This is the value that occurs more than other values in the dataset.  The value 6 occurred twice more than other values.

b) The two ways of describing the variation of temperatures are the variance and the standard deviation.

Variance = 7. This is a measure of how spread out a data set is. It is calculated as the average squared deviation of each number from the mean of a dataset.

Standard Deviation = 2.65.  The standard deviation measures the dispersion of a dataset relative to its mean and is calculated as the square root of the variance.

Step-by-step explanation:

a) Data and Calculations:

Noon Temperatures (in degrees Celsius) in a particular Canadian City on Thanksgiving Day:

Year    Degree  Difference     Squared

           Celsius                       Difference

2002        0          -5                     25

2003        3          -2                       4

2004        6           1                        1

2005        8           3                       9

2006        2          -3                       9

2007        9           4                      16

2008        7           2                       4

2009        6           1                        1

2010         4          -1                        1

2011          5          0                       0

Sum       50                                  70

Mean =    5 (50/10)

Variance =                                    7 (70/10)

Standard Deviation = 2.65 (Square root of variance)          

Median =  0, 2, 3, 4, 5, 6, 6, 7, 8, 9 (the values are arranged numerically.)

= (5 + 6)/2 = 5.5

Mode = 6 (occurred twice more than other values)

Okay, got it!

Here's the graph (sorry if it's confusing I'm going to try my best)

             Print   Electronic   Total

Youths    33       28      61

Adults    33       37      70

Total     66        65      131

Hope this helps!

Answer:

It would be (0,-3) ^^you can see on the graph

Answer:

D. Systematic sampling

Step-by-step explanation:

Answer:

x² - 1 = 8

Step-by-step explanation:

Given the following algebraic expression;

x² - 1

When x = -3

Substituting the value of x, we have;

x² - 1 = (-3)² - 1

x² - 1 = 9 - 1

x² - 1 = 8

Method II.

x² - 1 = (x - 1)(x + 1)

Substituting the value of x, we have;

x² - 1 = (-3 - 1)(-3+ 1)

x² - 1 = -4(-2)

x² - 1 = 8

Answer:

5,400

Step-by-step explanation:

7c = 2t; t = 7c/2

6c +5t = 10575

6c + 5(7c/2) = 10575

6c + 35c/2 = 10575

multiply all through by 2

12c + 35c = 21,150

47c = 21,150

c = 21150/47 = 450

12 chairs = 450 × 12 = 5,400

Answer:

AB

Step-by-step explanation:

Using FOIL (first outer inner last) u can determine that the final term will be produced by multiplying the last terms in each bracket. These are A and B, so the final term of the resulting trinomial is AB.

You can check this by fully expanding (x + A)(x + B):

[tex](x + A)(x + B)\\= x^{2} + Bx + Ax + AB[/tex]

the terms B and A are usually numbers, so Bx and Ax tend to get added together to form a middle term. hope this helps!

Answer:

with one pound of pizza dough you can make one large pizza or two 10-inch pizzas.

so 15 Large pizzas or 30 10 in pizzas

Step-by-step explanation:

Answer:

0.0309

Step-by-step explanation:

Faces on dice ( 1, 2, 3, 4, 5, 5)

Number of outcomes = 6

With 5 repeated twice

P(event A) = Required outcome / Total possible outcomes

Required outcome :

Number of 5's = 2 * distinct faces!

Required outcome = 2 * 5! = 2 * 120 = 240

Total possible outcomes = (number of faces)^distinct Numbers = 6^5 = 7776

Required / total possible = 240 / 7776

= 0.0308641

= 0.0309

Answer:

alternate exterior angle is answer

Answer:

Angle 2 and angle 8 are alternative exterior angles

Answer:

66 i think

Step-by-step explanation: