1979 to 2020 is how many years​

Answer:

x= -3

Step-by-step explanation:

i hope its right

Answer:

What lesson in math is this?

Step-by-step explanation:

So that I can search it and then help you

To find the number going to and from West is 165,000.

The number of bus passes from Southern services is 29,000.

East------------------- 80,000

North------------------- 124,000

South------------------- 61,000

West-------------------- 165,000

Total--------------------------- 430,000

To find the number going to and from West:

80,000 + 124,000 + 61,000 + x = 430,000

265,000 + x = 430,000

x = 430,000 - 265,000

x= 165,000.

Northern services-------------------- 43,000

Western services-------------------- 51,000

Eastern services---------------------- 35, 000

Southern services---------------------- 29,000

Total----------------------------------------------158,000

Let x be the unknown variable,

43,000 + 51,000 + 35,000 + x = 158,000

129,000 + x = 158,000

x= 158,000 - 129, 000

x= 29,0000

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Answer:

pink

Step-by-step explanation:

Answer:

  (c)  y = 3^x

Step-by-step explanation:

A function is described as exponential if the independent variable is found in the exponent.

  y = x^(1/2) . . . a square root function, not exponential

  y = 2x^3 . . . . a cubic (polynomial) function, not exponential

  y = 3^x . . . . . an exponential function

Answer:

It is a relation and a function.

Step-by-step explanation:

The domain of y = -2x + 7 is the set of all real numbers (assumed to be).

For each x real, the equation y = -2x + 7, means that exactly one real number is associated with x.  Thus, it is a function.  We note that a function is a special type of relation.  

Answer:

270m^2

Step-by-step explanation:

30m*18m/2 = 270m^2

Answer:

270

Step-by-step explanation:

The characteristic of the researcher having direct control over at least one variable to both surveys and Observational .

The option that is not a characteristic of both surveys and observational studies is:

a. The researcher has direct control over at least one variable.

Surveys and observational studies have several characteristics in common, such as collecting data about a population and not proving cause and effect. However, the characteristic of the researcher having direct control over at least one variable is not applicable to both surveys and observational studies.

In a survey, the researcher collects data by asking questions to individuals or groups. They do not have direct control over the variables being studied but rather collect information based on participants' responses. The researcher's role is primarily in designing the survey, selecting the sample, and analyzing the data.

In an observational study, the researcher observes and records data without intervening or manipulating any variables. The researcher does not have control over the variables being observed; instead, they observe and document the existing conditions or behaviors.

the characteristic of the researcher having direct control over at least one variable is not applicable to both surveys and observational studies. Both methods involve data collection about a population and do not establish cause and effect relationships, but control over variables is not a shared characteristic.

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Answer: (a) Using the Z-score formula, we have:

Z = (225 - 180) / 30 = 1.5

Using a standard normal distribution table, we find that the probability of a randomly selected adult weighing more than 225 pounds is approximately 0.0668.

(b) The mean of the sample means is equal to the population mean, which is 180 pounds. The standard deviation of the sample means is given by:

σ/√n = 30/√16 = 7.5 pounds

(c) The total weight of the 16 people in the elevator should not exceed the maximum load of 3,600 pounds. Therefore, the mean weight of the 16 people should not exceed:

3,600 / 16 = 225 pounds

(d) Using the central limit theorem, we can approximate the distribution of the sample means to be approximately normal with a mean of 180 pounds and a standard deviation of 7.5 pounds. To find the probability that the load will be exceeded, we can find the probability that the sample mean is greater than 225 pounds. Using the Z-score formula:

Z = (225 - 180) / 7.5 = 6

Since the Z-score is extremely high, the probability of the sample mean being greater than 225 pounds is extremely low and can be approximated as 0.

Step-by-step explanation:

Answer:

85.5

Step-by-step explanation:

Answer:

It's 85.5

Step-by-step explanation:

Hope this helps!

1) Yes, because each value of x maps onto only one value of y.

2) No, because the x-value of 1 maps onto 4 different y values.

Answer:

Step-by-step explanation:

You want to know if the given sets of ordered pairs represent a function.

A function is a relation that maps an input value to a single output value. On a graph, this means no two points are vertically aligned. For a table or set of ordered pairs, it means no input (x) value is repeated.

The input (x) values are {-1, 0, 1, 2} with no repeats. This relation is a function.

The input values are {1, 1, 1, 1} with repeats. This relation is not a function.

The two column proof showing that  ΔWXZ ≅ ΔYXZ is as shown below

From the given triangle, we see that;

Given: WX ≅ XY, XZ bisects WXY

Prove: ΔWXZ ≅ ΔYXZ

The two column proof for the above is as follows;

Statement 1;  WX ≅ XY, XZ bisects 2

Reason 1; Given

Statement 2: ∠WXZ ≅ YXZ

Reason 2; Angle bisector

Statement 3; XZ ≅ XZ

Reason 3: Reflexive property of congruence

Statement 4:  ΔWXZ  ≅ ΔYXZ

Reason 4:  SAS Congruence Postulate

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The equation in terms of x that represents the given relationship is 114 = (1 + 3x) * (Width)

Let's break down the information given:

Height of the rectangular box = 7 ft

Length of the rectangular box = 1 ft longer than thrice the width (x)

Volume of the rectangular box = 798 ft³

To write an equation that represents the given relationship, we need to relate the length, width, and height to the volume.

The volume of a rectangular box is given by the formula: Volume = Length * Width * Height.

Given that the height is 7 ft, we can substitute this value into the equation.

Volume = (Length) * (Width) * (7)

Now, let's focus on the length. It is described as 1 ft longer than thrice the width.

Length = 1 + (3x)

Substituting this value into the equation, we have:

Volume = (1 + (3x)) * (Width) * (7)

Since the volume is given as 798 ft³, we can set up the equation as follows:

798 = (1 + (3x)) * (Width) * 7

Simplifying further, we get:

798 = 7 * (1 + 3x) * (Width)

Dividing both sides of the equation by 7, we have:

114 = (1 + 3x) * (Width)

Therefore, the equation in terms of x that represents the given relationship is:

114 = (1 + 3x) * (Width)

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Answer:

? = 92°

Step-by-step explanation:

the chord- chord angle ? is half the sum of the measures of the arcs intercepted by the angle and its vertical angle, that is

? = \(\frac{1}{2}\) (LM + AK) = \(\frac{1}{2}\) (120 + 64)° = \(\frac{1}{2}\) × 184° = 92°

Answer:

Almost equals 28°

Step-by-step explanation:

cos(x)= 12/18

x= cos^-1 (12/18)

So it equals 48.1896°

Answer:

approximately 4 Tbsp. of powdered milk to 1 cup of water

Step-by-step explanation:

Answer:

....................

Answer:9 kali

Tiga buah uang logam dilempar bersama sebanyak 24 kali, maka frekuensi harapan muncul dua angka satu gambar adalah 9 kali. Peluang adalah perbandingan banyaknya kejadian dengan banyaknya ruang sampel

Step-by-step explanation:

Brainliest!

Frekuensi harapan kemunculan sisi angka pada satu keping koin adalah 2/3, sedangkan kemunculan sisi gambar adalah 1/3.

Jumlah total kemunculan sisi angka pada 3 keping koin dalam satu lemparan adalah 3 x 2/3 = 2

Jumlah total kemunculan sisi gambar pada 3 keping koin dalam satu lemparan adalah 3 x 1/3 = 1

Dalam 24 lemparan, jumlah total kemunculan sisi angka pada 3 keping koin adalah 24 x 2 = 48

Jumlah total kemunculan sisi gambar pada 3 keping koin dalam 24 lemparan adalah 24 x 1 = 24

Jadi, frekuensi harapan kemunculan sisi angka pada 3 keping koin dalam 24 lemparan adalah 48/72 atau 2/3, dan frekuensi harapan kemunculan sisi gambar pada 3 keping koin dalam 24 lemparan adalah 24/72 atau 1/3.

Answer:

10 bananas

Step-by-step explanation:

Compare same things in the same order to write a proportion

(fraction = fraction)

bananas/rupees

=4dozen/R60

=4(12)/R60

=48/60

=4/5

The question says

bananas/rupees

=unknown/R12.5

4/5 = x/12.5

crossmultiply

4(12.5) = 5x

50 = 5x

divide by 5

10 = x

You can buy 10 bananas for R12.5

10 bananas

Step-by-step explanation:

In ₹60, we can purchase 4 dozen bananas

=> 4×12

=> 48 bananas

In ₹1, we can purchase:-

\( \frac{48}{60} \)bananas

In ₹12.50, we can purchase:-

\( \frac{48}{60} \times 12.50\)

\( = > \frac{48 \times 1250}{60 \times 100}\)

\( = > \frac{8 \times 125}{100}\)

By reducing to lowest terms, we get,

\(10\)

Hence, 10 bananas can be purchased for ₹12.50

The Equivalent ratio to 8/2 is 4/1, 24/6, 32/8 and 48/12.

We have,

Cylinder and prism.

Here we have to find the equivalent ratio to 8/2.

First simplifying the given ratio as

8/2

= (4 x 2)/2

= 4 /1

Now, some more ratios equivalent to 8/2.

1. 8/2 x 3/3 = 24/ 6

2. 8/2 x 4/4 = 32/8

3. 8/2 x 6/6= 48/12

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The correct value of particle's acceleration at t = 2 seconds is -1/12 m/s^2.

To find the particle's velocity, we need to take the derivative of the position function with respect to time (t).

Given the position function:

s = √24 + 6t

To find the velocity, we differentiate the position function with respect to time:

v = ds/dt

Applying the power rule and chain rule for differentiation, we get:

v = (1/2) * (24 + 6t)^(-1/2) * 6

Simplifying further:

v = 3 / √(24 + 6t)

To find the velocity at t = 2 seconds, we substitute t = 2 into the velocity equation:

v = 3 / √(24 + 6(2))

v = 3 / √(24 + 12)

v = 3 / √36

v = 3 / 6

v = 1/2 m/s

So, the particle's velocity at t = 2 seconds is 1/2 m/s.

Now, let's find the particle's acceleration. Acceleration is the derivative of velocity with respect to time.

a = dv/dt

To find the acceleration, we differentiate the velocity function with respect to time:

a = d(3 / √(24 + 6t)) / dt

Applying the quotient rule and chain rule, we get:

a = -3 * (24 + 6t)^(-3/2) * 6

Simplifying further:

a = -18 / (24 + 6t)^(3/2)

To find the acceleration at t = 2 seconds, we substitute t = 2 into the acceleration equation:

a = -18 / (24 + 6(2))^(3/2)

a = -18 / (24 + 12)^(3/2)

a = -18 / 36^(3/2)

a = -18 / 36^(3/2)

a = -18 / 216

a = -1/12 m/s^2

So, the particle's acceleration at t = 2 seconds is -1/12 m/s^2.

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Answer:

No

Step-by-step explanation:

The product of zero and any number is zero. Basically, if you multiply any number with zero, you get zero. Hence, 4*0=0. However, anything added with zero is itself since you're basically not adding anything to that number. For example, nothing is being added to 4 in '4+0', so 4+0=4.

4*0=0

4+0=4

0\(\neq\)4

Answer:

2923 is your p is equal to 2 and n

Community colleges in the United States play an important role in higher education. In United States, everyone monitors they community colleges are primarily her two-year institutions of higher education that focus on teaching and learning and workforce preparation.

Community colleges are open access institutions that offer economically affordable entry into higher education. About half of first-time college-going students enroll in community colleges, which serve as her transition route to four-year colleges (Beach, 2011). However, despite the important role and primary focus of community colleges, students may view community college instruction as inferior and undesirable to her four-year college (Dougherty, Lahr, & Morest, 2017; Twombly, 2001; Twombly & Townsend, 2008). This general dissatisfied view of community college instruction has much to do with the historical legacy of community colleges, where most two-year schools are either officially called "junior colleges" or "junior colleges." is called Community colleges have reason to brag about progress. It tends to have a higher proportion of female and minority teachers compared to traditional her four-year colleges (Antonio, 2002; Marcotte, Bailey, Borkowski, & Kientz, 2005; Turner, 2001). While the high recruitment rate of minority teachers is laudable, most higher education institutions are still predominantly white and male dominated (with the exception of those serving minorities). Overall, despite the high proportion of women and minority teachers, empirical studies show that such teachers experience high levels of stress and frustration with the way students are treated in the classroom. (Allen et al., 2002; Pittman, 2010). For many teachers and teachers of color, the classroom environment serves as a reminder of the unfortunate social ills that plague our society (Harlow, 2003; Seo & Hinton, 2009).

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Answer:

  B.  Distributive Property

Step-by-step explanation:

You want to know the reason in the proof that best supports the transition from 5. 99-3x = 12(x+2) to 6. 99-3x = 12x+24.

You will notice that in the transition from

  5. 99-3x = 12(x+2)

to

  6. 99-3x = 12x+24

the expression 12(x+2) has been replaced by the expression 12x+24.

The property of addition and multiplication that makes it true that ...

  12(x +2) = 12x +24

is the distributive property of multiplication over addition. That property tells you that parentheses can be eliminated by multiplying each of the terms inside by the factor outside.

Answer:

Step-by-step explanation:

the slope of line n is also -3 as it is parallel to m

The answer is A

Answer:

The 80% confidence interval for the population mean is  19.48 or 20.52

Step-by-step explanation:

Given that ;

the random sample size n = 81

mean \(\bar x\) = 20

median  = 21

mode = 22

standard deviation σ = 3.6

The 80% confidence interval for the population mean can be calculated as follows:

Firstly; the degree of freedom df = n - 1

df = 81 - 1

df = 80

At 80% confidence interval the critical value is z =  \(t_{0.1, 80} = 1.292\)

The 80% confidence interval for the population mean is  = \(\bar x \pm \dfrac{ z \times \sigma }{\sqrt{n}}\)

\(= 20 \pm \dfrac{ 1.292 \times 3.6 }{\sqrt{81}}\)

\(=20 \pm \dfrac{ 4.6512 }{9}\)

\(= {20 \pm 0.5168 }\)

= 19.4832 or 20.5168

\(\approx\) 19.48 or 20.52

Answer:The reciprocal of 2/3 is 3/2. The product of 2/3 and its reciprocal 3/2 is 1.

Step-by-step explanation:

None of the graphs represents absolute value |x| graphs however the second graph at the top is a graph of y = x/2

Each absolute value graph will result in a "V" shape.

It is divided into two parts: a negative slope and a positive slope.

The vertex is the location where they meet. It is possible to fold an absolute value graph in half along its line of symmetry.

The function y = |x| is an absolute value function's parent function or most fundamental function.

The graph shows only one slope

The graph of  y = 1/2 |x| is attached

However if the equation is  y=1/2 * [x] = x/2 then the second option at the top represents the graph with a slope of 1/2.

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