Simplify the expression -2-17+12-(-14)
hurry 100 points and brainlyest

Answer:

16s + 48

Step-by-step explanation:

8(2s) = 16

8(6) = 48

Answer:

Hello your question is poorly written the complete question is attached below

answer :

a) H0 : p1 = p2

  Ha : p1 ≠ p2

b)  Z = -0.58

c) P-value =  0.561915

d) we will reject the Alternative hypothesis

Step-by-step explanation:

For sample 1 ;  n1 = 254 , x1 = 28

For sample 2 ; n2 = 301 , x2 = 38

level of significance ∝ = 0.01

P1 = X1 / n1 = 28 / 254  = 0.1102

P2 = X2 / n2 = 38 / 301 = 0.126

a) Determine the null and alternate hypothesis

H0 : p1 = p2

Ha : p1 ≠ p2

b) Determine Test statistic

we perform a Z-statistic to test the hypothesis

Z = \(\frac{p1-p1 }{\sqrt{( p(1-p)*(\frac{1}{n1}+\frac{1}{n2}) ) } }\)  -------- ( 1 )

p =  ( x1 + x2 ) / ( n1 + n2 )

= ( 28 + 38 ) / ( 254 + 301 ) = 0.1189

Where: p = 0.1189 , p1 = 0.1102 , p2 = 0.126 ( input values into equation 1 )

∴ Z = -0.58

c) Determine P-value

P-value =  0.561915 ( using excel function )

d) conclusion : since p-value > 0.01 ( level of significance ) we do not reject the null hypothesis.  therefore it proves that p1 = p2

Using compound interest, it is found that Peter needs to invest $404,054.

The amount of money earned, in compound interest, after t years, is given by:

\(A(t) = P\left(1 + \frac{r}{n}\right)^{nt}\)

In which:

In this problem:

The investment made is P, hence:

\(A(t) = P\left(1 + \frac{r}{n}\right)^{nt}\)

\(840000 = P\left(1 + \frac{0.05}{1}\right)^{15}\)

\(P = \frac{840000}{(1.05)^{15}}\)

\(P = 404054\)

Peter needs to invest $404,054.

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Answer:

C

Step-by-step explanation:

A relation that has more than one output of each input. That is not a function. A function only has one output of each input. Function a and function b are linear functions. Function a is represented by the table values. function b is represented by the equation y=3x+4.

Domain, is a term that is used to measure the independent variable’s values. Also known as the “x” values. It tells you what values of “x” are applicable in the function. What values will satisfy the function.

Range, is a term used to measure the dependent variable’s values. Also known as the “y” values. It tells you what values of why does the graph of the function extends till.

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The value of X is 4/5 if point P is on the unit circle and if the coordinate of P is -3/5 and P is in iV quadrant.

We know that unit circle is the circle of radius 1 unit. We are given the y-coordinate of P, that is y = -3/5. Now if we draw a perpendicular line at x-axis, and we know the length of line joining the P and the origin is 1 unit (h = 1). We can construct a right triangle. Then by pythagorean theorem.

x² + y² = h²

x² = √(h² - y²)

x² = √(1² - (-3/5)²)

x² = √(1 - (9/25))

x² = √(16/25)

x = 4/5

Since X is in the IV quadrant, where x is positive and y is negative.

So x = +4/5

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The  best measure of center for the data shown is the median, and its value is 17.

The median is the best measure of center for the given data set. To find the median, we arrange the numbers in ascending order:

10, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24

Since the data set has an odd number of values, the median is the middle value, which in this case is 17.

Therefore, the best measure of center for the data shown is the median, and its value is 17.

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=

Step-by-step explanation:

the numbers are equal n if u work out all of them ull get the same answer

Answer:

the value of √7=2.645751311065 and value of 14/5=2.8

so.......

√7<14/5

Answer:

fn+e= 1978

Step-by-step explanation:

Answer:

Step-by-step explanation:

y = mx + b

slope m is found as the change in y over the change in x

as y decreases 3 units for a 3 unit increase in x, the slope is -3/3 = -1

The y intercept b is where the plot crosses the y axis, 4 units above the x axis

y = -1x + 4

or

y = 4 - x

9. The dilation of the larger solid figure on the coordinate grid to obtain the dashed figure can be represented by the expression in option C

C. (x, y), (-5/8·x, 5/8·y)

A dilation transformation is one in which the dimensions of the sides of the pre-image are increased (enlarged) or decreased to get the image.

9. The dilation of a function, f(x), by a factor k are; f(k·x), and k·f(x), where;

f(k·x) is an horizontal dilation, and k·f(x) is a vertical dilation

The ordered pair (x, y) which can be expressed as (x, f(x)), where, y = f(x), following a dilation by a factor of k is therefore;

\((x, \, y) \overset{D_k}\rightarrow (k\cdot x, \ k\cdot f(x)) = (k\cdot x, \ k\cdot y)\)

The representation of a dilation of a point (x, y), by a factor of k is therefore, obtained by multiplying both the x and y-values by the factor k, as follows;

(x, y)   \(\overset{D_x} \rightarrow\)   (k·x, k·y)

Similarly, the representation of the reflection of the point (x, y) across the y-axis is the point (-x, y)

The point (-5.8·x, 5/8·y),m is therefore obtained from the dilation of the point (x, y), by a factor of 5/8, followed by a reflection across the y-axis.

The option that represents the dilation is therefore, option C

C. (x, y), (-5/8·x, 5/8·y)

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Answer:

A sample size of 474 is required.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \(\pi\), and a confidence level of \(1-\alpha\), we have the following confidence interval of proportions.

\(\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}\)

In which

z is the z-score that has a p-value of \(1 - \frac{\alpha}{2}\).

The margin of error is of:

\(M = z\sqrt{\frac{\pi(1-\pi)}{n}}\)

Based on previous evidence, you believe the population proportion is approximately 73%.

This means that \(\pi = 0.73\)

95% confidence level

So \(\alpha = 0.05\), z is the value of Z that has a p-value of \(1 - \frac{0.05}{2} = 0.975\), so \(Z = 1.96\).

How large of a sample size is required?

A sample size of n is required, and n is found when M = 0.04. So

\(M = z\sqrt{\frac{\pi(1-\pi)}{n}}\)

\(0.04 = 1.96\sqrt{\frac{0.73*0.27}{n}}\)

\(0.04\sqrt{n} = 1.96\sqrt{0.73*0.27}\)

\(\sqrt{n} = \frac{1.96\sqrt{0.73*0.27}}{0.04}\)

\((\sqrt{n})^2 = (\frac{1.96\sqrt{0.73*0.27}}{0.04})^2\)

\(n = 473.24\)

Rounding up:

A sample size of 474 is required.

The solution to the system of equations is x = 1 and y = -3.

To solve the system of equations using the substitution or elimination method, let's start with the substitution method.

Given equations:

y = 4x - 7

4x + 2y = -2

We'll solve equation 1) for y and substitute it into equation 2):

Substituting y from equation 1) into equation 2):

4x + 2(4x - 7) = -2

4x + 8x - 14 = -2

12x - 14 = -2

Now, we'll solve this equation for x:

12x = -2 + 14

12x = 12

x = 12/12

x = 1

Now that we have the value of x, we can substitute it back into equation 1) to find y:

y = 4(1) - 7

y = 4 - 7

y = -3

Therefore, the solution to the system of equations is x = 1 and y = -3.

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Answer:

$1.83

Step-by-step explanation:

5.50÷3 = 1.8333333 = 1.83

Answer:

The ratios are not equal, so this is not a dilation.

Step-by-step explanation:

4/3 is the first ratio

3/4 is the second ratio

Since these ratios are not equal there is not a dilation.

Answer:

The perpendicular line to y=2/3x+2 and passes through the point (3,4) is      y = -3/2x - 1/2

Step-by-step explanation:

A line perpendicular to another has a slope that is the negative reciprocal of the slope of the other line.

so for the y=2/3x+2,

the slope is 2/3, the negative reciprocal is,

- 3/2     (new slope)

y = mx + b

y = (-3/2)x + b

plug in the point (3,4):

(4) = (-3/2)(3) + b

(4) = (-9/2) + b

(4) + (-9/2) = (-9/2) + (-9/2) + b

- 1 / 2 = b

y = (-3/2)x - 1/2

Let me know if you have any questions!

Answer:

by explaining in nodes interact with the blockchain to prevent cheating during financial transactions

Step-by-step explanation:

Answer:

By explaining how nodes interact

Step-by-step explanation:

The set of solutions for the linear system is x1 = 6, x2 = 3, and x3 = -4.

The linear system is given as follows:

x1 + x2 - x3 = 6

2x1 + x2 + 2x3 = 8

3x1 + 2x2 + 3x3 = 14

To solve this system, we will use the Gauss-Jordan elimination method. First, we will subtract twice the first equation from the second equation and three times the first equation from the third equation.

2x1 + x2 + 2x3 = 8

- 2(x1 + x2 - x3 = 6)

2x1 + x2 + 2x3 = 8

3x1 + 2x2 + 3x3 = 14

- 3(x1 + x2 - x3 = 6)

0x1 + 3x2 + 5x3 = 6

Next, we will subtract three times the second equation from the third equation.

3x1 + 2x2 + 3x3 = 14

- 3(0x1 + 3x2 + 5x3 = 6)

3x1 + 2x2 - 2x3 = 8

Finally, we will divide the first equation by 1, the second equation by 3, and the third equation by -2.

x1 + x2 - x3 = 6

/ 1

x1 + (1/3)x2 + (5/2)x3 = 3

(-1/2)x1 + x2 + x3 = -4

The set of solutions for the linear system is x1 = 6, x2 = 3, and x3 = -4.

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The scale factor that was used to convert triangle ABC into the image in A ' B ' C ' is 1 / 2.

To find the scale factor, you need to find the length of a side of triangle ABC and then the length of the corresponding side in A ' B ' C '.

The side length we will pick is AB which is:

= 6 - 2

= 4 units

The side length of the other triangle is A' B' :

= 3 - 1

= 2 units

The scale factor is:

= 2 / 4

= 1 / 2

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Answer:

i wish i knew im in the same situwantion

Step-by-step explanation:

Answer:

6 days

Step-by-step explanation:

This question becomes much easier when written out per day (shown below). The question tells us that she is reducing her run by half every day, so all we need to is divide the previous day by 2 to get the current day. She starts out with 26 miles so this is our day 1 value.

Day 1 = 26 miles

Day 2 = 13 miles (26÷2=13)

Day 3 = 6.5 miles (13÷2=6.5)

Day 4 = 3.25 miles (6.5÷2=3.25)

Day 5 = 1.625 miles (3.25÷2=1.625)

Day 6 = 0.8125 miles (1.625÷2=0.8125)

We can see that by day 6, her total running amount is less that 1 mile, so the final answer is 6 days.

Step-by-step explanation:

-9 ≤ 7 − 8x

8x ≤ 16

x ≤ 2

Answer:

D

Step-by-step explanation:

Answer:

option B

4.5×10^9

Step-by-step explanation:

I HOPE THIS WILL HELP YOU :)

Answer:

B.  4.5 x 10^9.

Step-by-step explanation:

Scientific notation is of the form:

N x 10^n   where  1  ≤ N < 10 and n is an integer ( ≠ 0)

We count the number of digits after the first one ( 4) - this comes to 9.

So the correct  answer is 4.5 * 10^9.

On solving the provided question, we can say that  -   sine of x = arcsin 39/74 = 31.8 degrees

The hypotenuse of a right triangle is its longest side, while its "opposite" and "adjacent" sides are those that are across from and next to the same angle, respectively. For the sides of right triangles, we have unique terminology. A right triangle's hypotenuse is always the side that faces away from the right angle.

The hypotenuse of a right triangle is its longest side, while its "opposite" and "adjacent" sides are those that are across from and next to the same angle, respectively. For the sides of right triangles, we have unique terminology. A right triangle's hypotenuse is always the side that faces away from the right angle.

Here the sine of x = ( / (hypotenuse) = 39/74.  Using a calculator with the inverse trig functions built in, we find

arcsine 39/74 = 31.8 degrees

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Answer:

Step-by-step explanation:

(0.1)²=0.01

(0.2)²=0.04

(0.3)²=0.09

(0.4)²=0.16

(0.5)²=0.25

(0.6)²=0.36

(0.7)²=0.49

(0.8)²=0.64

√0.5 or √0.50 is between √0.49 and √0.64

or

0.7 and 0.8

(0.01)²=0.0001

(0.02)²=0.0004

(0.03)²=0.0009

(0.04)²=0.0016

(0.05)²=0.0025

so √0.002 or √0.0020 is between √0.0016 and √0.0025

or between 0.04 and 0.05

Answer:12.6923076923

Step-by-step explanation:for starters u have to subtract 1.75 out of 10 dollars after that u have to divide 8.25 which is the left over of 1.75 minus 10 after u divide u should get 12 if u round but since u want the full decimal thinggy it is 12.6923076923

The graph of the function is attached below.

The graph of a function shows the correlation between its inputs (represented by x-values) and matching outputs (represented by y-values). It is a means of illustrating the actions and traits of a function.

Plotting points that conform to the function's rule in a cartesian coordinate system results in the graph of the function. An input-output pair for the function is represented by each point on the graph. The point's x-coordinate represents the input value, while its y-coordinate represents the output value.

We can further use the graph to determine the range, domain, y-intercept, x-intercept and so many others from a graph.

In the given problem;

The graph of the function f(x) = 1 + x / x² - 1 is attached below;

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