Evaluate ab + c for a = 2, b = 3, and c= 4.
010
27
9

Answera and Step-by-step explanation: Correlation Coefficient is the measure of how strong two variables are. There are numerous types of correlation coefficients and the product moment correlation coefficient, also known as Pearson's correlation or Pearson's R is most commonly used in linear regression. The formula to calculate it is:

r = n(∑xy) - (∑x)(∑y) / √[∑x² - (∑x)²].[n∑y² - (∑y)²]

To find the value of R:

1) Separate the values of X and Y and out them in 2 columns.

2) Add 3 more columns: for xy, x² and y²;

3) Find the values of each column;

4) Add each column;

5) Put the sum of each column in its place on the formula above;

6) Find the correlation.

i) For this question, r = 0.9645. As it's positive, means that the two variables are directly linked, i.e., an increase in one variable will produce an increase in the other variable in the same proportion.

ii) The Senator should distribute Norvasc to the old adults groups, because, as the population grows, the death associated with high blood pressure will also grow, as explained by the correlation coefficient.

Answer:

Step-by-step explanation:

The measure of the inscribed angle BAC is half the measure of the intercepted arc BC, so is 102°/2 = 51°.

The base angles  at B and C are the complement of half this value, or ...

  90° -(51°/2) = 64.5°

The angle measures in the triangle are ...

  ∠A = 51°

  ∠B = ∠C = 64.5°

Answer:

3/3/8

Step-by-step explanation:

Answer:

(20,4)

Step-by-step explanation:

Answer:

{4,20}

Step-by-step explanation:

b on edg got 100%

Answer:

40 feet

Step-by-step explanation:

Have a nice day

Answer:

9(5x - 3) option (c)

Step-by-step explanation:

The question isn't clear as well as incomplete without the options. Since there are no options let's determine the answer of the following mathematical expression:

45x - 27

a) 9(3x - 5)

b) 3(12x + 7)

c) 9(5x - 3)

d) 5(7x + 30)

To determine which option is equivalent to 45x - 27, we would check each option by expanding the bracket. Apply BODMAS (stands for Bracket, Of, Division, Multiplication, Addition and Subtraction) after the expansion. That is multiply before you add or subtract.

a) 9(3x - 5) = 9×3x - 5×9

= 27x - 45

b) 3(12x + 7) = 3×12x + 3×7

= 36x + 21

c) 9(5x - 3) = 9×5x - 9×3

= 45x - 27

d) 5(7x + 30) = 5×7x + 30×5

= 35x + 150

From the expansion, only option C is equal to the given expression: 45x - 27

Answer:

a) P(x = 0) = 64.69%

b) P(x ≥ 1) = 35.31%

c) E(x) = 0.42

d) var(x) = 0.3906

Step-by-step explanation:

The given problem can be solved using binomial distribution since:

The binomial distribution is given by

P(x) = ⁿCₓ pˣ (1 - p)ⁿ⁻ˣ

Where n is the number of trials, x is the variable of interest and p is the probability of success.

For the given scenario. the six daily arrivals are the number of trials

Number of trials = n = 6

The probability of success = 7% = 0.07

a) Find the probability that on one day no planes have an exceedence.

Here we have x = 0, n = 6 and p = 0.07

P(x = 0) = ⁶C₀(0.07⁰)(1 - 0.07)⁶⁻⁰

P(x = 0) = (1)(0.07⁰)(0.93)⁶

P(x = 0) = 0.6469

P(x = 0) = 64.69%

b) Find the probability that at least 1 plane exceeds the localizer.

The probability that at least 1 plane exceeds the localizer is given by

P(x ≥ 1) = 1 - P(x < 1)

But we know that P(x < 1) = P(x = 0) so,

P(x ≥ 1) = 1 - P(x = 0)

We have already calculated P(x = 0) in part (a)

P(x ≥ 1) = 1 - 0.6469

P(x ≥ 1) = 0.3531

P(x ≥ 1) = 35.31%

c) What is the expected number of planes to exceed the localizer on any given day?

The expected number of planes to exceed the localizer is given by

E(x) = n×p

Where n is the number of trials and p is the probability of success

E(x) = 6×0.07

E(x) = 0.42

Therefore, the expected number of planes to exceed the localizer on any given day is 0.42

d) What is the variance for the number of planes to exceed the localizer on any given day?

The variance for the number of planes to exceed the localizer is given by

var(x) = n×p×q

Where n is the number of trials and p is the probability of success and q is the probability of failure.

var(x) = 6×0.07×(1 - 0.07)

var(x) = 6×0.07×(0.93)

var(x) = 0.3906

Therefore, the variance for the number of planes to exceed the localizer on any given day is 0.3906.

Answer: B

Step-by-step explanation:

The actual distances is     1.7 - ( -0.5)=  2.2

A  1.7- 0.5=  1.2 and the absolute value of 1.2 is 1.2

B  1.7- (-0.5) = 2.2

Answer:

8

Step-by-step explanation:

The square root of a number is what number multiplied by itself can result in the product of this.

For example, in this question you multiply 8 by itself to get 64

8*8=64

So, the square root is 8

Answer:

Correct answer is: E

Step-by-step explanation:

Answer: 31°

Step-by-step explanation:

We know that a right triangle is equal to 180°. Since this is a right triangle, we know that one angle is 90°. Since we are given out other angle, it is very easy to find the missing angle.

180°=59°+90°+x

180°=149°+x

x=31°

Answer:

the answer is -12u/3 + 2

Answer:

W=-3/2u+2

Step-by-step explanation:

Step 1: Flip the equation.

8w-3=-12u+13

Step 2: Add 3 to both sides.

8w-3+3=-12u+13+3

8w=-12u+16

Step 3: Divide both sides by 8.

8w/8=-12u+16/8

W=-3/2u+2

Hope I helped

Answer: The top right and bottom right polygons are parallelograms and not squares.

Step-by-step explanation:

A parallelogram is a quadrilateral with two pairs of parallel sides opposing each other.

A square is a quadrilateral with two pairs of parallel sides opposing each other; however, all four sides must be equal and all angles must equal 90 degrees.

Any quadrilateral that is a parallelogram and not a square has angle measures that are not 90 degrees (or have unequal sides).

Only the top right and bottom right images are parallelograms and not squares.

The shapes that are parallelogram but not a square is the rectangle and the parallelogram. The rhombus is a square because the angles are 90°.

A quadrilateral is a polygon with four sides and four angles. A parallelogram is a quadrilateral with parallel and equal opposite sides.

A square is a quadrilateral in which all sides are equal, opposite sides are parallel and each angle measures 90 degrees.

The shapes that are parallelogram but not a square is the rectangle and the parallelogram. The rhombus is a square because the angles are 90°.

Find out more on quadrilateral at: https://brainly.com/question/16691874

Answer:

  c > -7/8

Step-by-step explanation:

Add 2 for an inequality that compares to zero:

  2x^2 -3x +(c+2) > 0

This will be true when the discriminant is negative. For the quadratic ...

  ax^2 +bx +c

the discriminant is ...

  b^ -4ac

We want this to be negative:

  (-3)^2 -4(2)(c+2) < 0

  9 -8(c +2) < 0

  9 -8c -16 < 0

  -7 < 8c

  -7/8 < c

The given inequality will be true for all values of c greater than -7/8.

Answer:

amount of the drug becomes approximately equal to 0.2 milligrams after 13.04 hours

Step-by-step explanation:

Given: The function [tex]f(t)=10e^{-0.3 t}[/tex] represents number of milligrams of a drug in a person’s body after t hours

To find: time after which amount of the drug becomes approximately 0.2 milligrams

Solution:

[tex]f(t)=10e^{-0.3 t}\\0.2=10e^{-0.3 t}\\\frac{0.2}{10}=e^{-0.3 t}\\\frac{2}{100}=e^{-0.3 t}\\\frac{1}{50}=e^{-0.3 t}\\[/tex]

As [tex]e^x=y\Rightarrow x=\ln y[/tex] ,

[tex]50=e^{0.3 t}\\0.3t=\ln 50\\t=\frac{\ln 50}{0.3}=13.04\,\,hours[/tex]

So, amount of the drug becomes approximately equal to 0.2 milligrams after 13.04 hours

Answer:

13 hours

Step-by-step explanation:

right on edmentum

Answer:

x > -6

Step-by-step explanation:

Move 6 to the other side:

0.5x > -3

x > -6

Answer:

[tex]z = - 2[/tex]

Step-by-step explanation:

[tex]5 = 4z + 13 \\ 5 - 13 = 4z \\ - 8 = 4z \\ \frac{ - 8}{4} = \frac{4z}{4} \\ z = - 2[/tex]

Step-by-step explanation:

I think we can do it in this way

x3 - 3x2 - 10x + 24

x2(x - 3) - 2(5x + 12)

Answer:

Step-by-step explanation:

In a standard normal probability distribution, the Z-value depends on the data set, the mean and the standard deviation, that means, it's a variable measure, it's not a constant, that's why the choice d is wrong.

On the other hand, the other choices are correct regarding standard normal probability distribution.

Therefore, the right answer is d.

Answer:

1. does (yes he can)

2. 216

3. more

4. 194.25

Step-by-step explanation:

Total wood

18 x 12 = 216

Maurice suggestion

10.5 x 10.5 = 110.25

Sides

10.5 x 2 inches x 4 sides = 84

84 + 110.25 = 194.25

216 - 194.25 = 21.75 extra

Answer:

[tex]2\frac{3}{11} \\=2.2727272727[/tex]

Step-by-step explanation:

Answer:

47.02

Step-by-step explanation:

Since the exponent of the scientific notation is positive, move the decimal point 1 places to the right.

47.02

Answer:

0.0004702

Step-by-step explanation:

Answer:

its just 5/10, or 1/2 is it not

Step-by-step explanation:

Answer:

D. A cat is a mammal.

Step-by-step explanation:

Reason being is because a cat isn't a dog, yet it's still a mammal.

Answer:

c a spider is not a mammal

Step-by-step explanation:

i mean not all dogs r mammals i mean common sense

Answer: 1.Use of traditional tests may not evaluate how hard a student is willing to work to get a good evaluation

Step-by-step explanation:

Proponents of Traditional Tests argue that they are fairer because hard working students who may fail standadized tests may be able to pass them.

However, the text shows that that arguement has loopholes because a student could pass those Traditional testing methods by employing methods that are void of hard-work such as receiving help from other people or buying a customized essay over the internet.

Should this be the case then, Traditional tests may not be able to properly evaluate a student's hard work because one can not know if the submitted content was solely due to hard-work or if there was assistance from somewhere.

Answer:

3.Use of non-traditional tests to evaluate students is not necessarily fairer than using standardized tests to evaluate students.

Step-by-step explanation:

The Use of non-traditional tests to evaluate students is not necessarily fairer than using standardized tests to evaluate students because it is difficult to determine if a student received any help from others in putting together his or her portfolio, essay or project except if he is closely monitored by the teacher. Also a student may pay someone online to write a customized essay for him/her via the internet therefore it cannot be concluded whether it is due to the student's hard work or due to assistance the student received from others.

Answer:

  √2

Step-by-step explanation:

The ratio of the hypotenuse to the leg in any isosceles right triangle is √2.

_____

Perhaps you want to figure the hypotenuse, then compute the ratio.

  c = √(a²+b²) = √(3² +3²) = √18 = 3√2

Then the ratio to a leg is ...

  c/a = (3√2)/3 = √2

Answer:

1.4

Step-by-step explanation:

i just did it.

Answer:

The probability that you roll a 5 or 2 is [tex]\frac{1}{3}[/tex]

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

In this question:

There are 6 total outcomes(all numbers from 1 to 6).

The desired are 2, that is, rolling 2 or rolling 5.

p = 2/6 = 1/3

The probability that you roll a 5 or 2 is [tex]\frac{1}{3}[/tex]

Answer:5/2

Step-by-step explanation: