PLEASE ANSWER I WILL MARK U BRAINLIEST IF U GET IT RIGHT! NEED ASAP

Answer:

37.7 cm

Step-by-step explanation:

C = 2πr

diameter = 12cm

Significant correlations are useful statistical tools for identifying relationships between variables, but they are not able to indicate causality.

While they can demonstrate the strength of the effect through the correlation coefficient, the size of the effect by examining the magnitude of the relationship, and the probability level by evaluating the likelihood that the observed relationship occurred by chance, they cannot prove that one variable directly causes changes in another variable.

Correlations can only show that two variables are related, but they do not provide information about the nature of that relationship. It is important to remember that correlation does not imply causation. There might be other factors, known as confounding variables, that affect both variables and create the appearance of a relationship where none truly exists.

To determine causality, researchers must conduct controlled experiments where they manipulate the independent variable and observe the effect on the dependent variable, while holding all other factors constant. This allows them to isolate the cause-and-effect relationship between the two variables and draw more accurate conclusions.

In summary, while significant correlations can provide valuable information about the strength, size, and probability level of the relationship between variables, they cannot establish causality. To determine if one variable truly causes changes in another, controlled experiments must be conducted.

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Answer:

-------------------------

AB is the missing hypotenuse of the right triangle with shown legs.

Find AB using Pythagorean theorem:

Find the perimeter:

The probability of the number being odd or at most 16 is 11/18, or approximately 0.61.

To solve this problem, we need to find the probability of the number being odd or at most 16. Let's first find the probability of the number being odd:

There are 36 odd numbers from 1 to 72 (1, 3, 5, ..., 71). Since the number is chosen at random, each number has an equal probability of being chosen. Therefore, the probability of the number being odd is:

P(odd) = number of odd numbers from 1 to 72 / total number of numbers from 1 to 72

= 36 / 72

= 1/2

Now, let's find the probability of the number being at most 16:

There are 16 numbers from 1 to 16 (1, 2, 3, ..., 16). Therefore, the probability of the number being at most 16 is:

P(at most 16) = number of numbers from 1 to 16 / total number of numbers from 1 to 72

= 16 / 72

= 2/9

To find the probability of the number being odd or at most 16, we need to add the probabilities of these two events and subtract the probability of their intersection (i.e., the probability of the number being both odd and at most 16). Since the set of odd numbers from 1 to 72 and the set of numbers at most 16 from 1 to 72 are disjoint, their intersection is the empty set, and its probability is 0. Therefore:

P(odd or at most 16) = P(odd) + P(at most 16) - P(odd and at most 16)

= 1/2 + 2/9 - 0

= 11/18

So the probability of the number being odd or at most 16 is 11/18, or approximately 0.61.

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Net present value is a measure of profitability. The NPV of an investment is the net cash inflow received over the project's life, less the initial cash outflow, adjusted for the time value of money.

A higher NPV means the project is more lucrative. The profitability index measures the benefit-cost ratio of a project and is calculated by dividing the present value of future cash flows by the initial cash outflow. A profitability index greater than one indicates that the project will be profitable, whereas a profitability index less than one indicates that the project will not be profitable.

Calculation of Net Present Value (NPV) of Project AInitial Outlay = $454,000Net annual cash flows = $68,000Discount Rate = 9%Use the PV of an annuity of $1 table to determine the PV of net cash flows.Using the formula for NPV,NPV of Project A = PV of net cash flows – Initial OutlayNPV of Project A = 68,000 × 7.63930 – 454,000NPV of Project A = $56,201.85Calculation of Profitability Index of Project AProfitability Index of Project A = Present value of future cash flows / Initial OutlayProfitability Index of Project A = 68,000 × 7.63930 / 454,000Profitability Index of Project A = 1.14

Calculation of Net Present Value (NPV) of Project BInitial Outlay = $300,000Net annual cash flows = $47,000Discount Rate = 9%Use the PV of an annuity of $1 table to determine the PV of net cash flows.Using the formula for NPV,NPV of Project B = PV of net cash flows – Initial OutlayNPV of Project B = 47,000 × 6.10338 – 300,000NPV of Project B = $37,100.86Calculation of Profitability Index of Project BProfitability Index of Project B = Present value of future cash flows / Initial OutlayProfitability Index of Project B = 47,000 × 6.10338 / 300,000Profitability Index of Project B = 0.96

The NPV and profitability index calculations show that project A is the better investment since it has a higher NPV and profitability index than project B.

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Answer:

20

Step-by-step explanation:

constant is the term with no variables attached

Answer:

5/2

Step-by-step explanation:

(18/15)*(25/12)=(18*25)/(15*12)=450/180=5/2

Based on the centroid theorem, the value of x is: 2.5.

The centroid theorem states that, the centroid of a triangle equals two-third of the distance from each midpoint of a triangle to each vertex.

Given:

BD = 4x + 5

BF = 9x

Thus:

BD = 2/3(BF)

4x + 5 = 2/3(9x)

4x + 5 = 6x

4x - 6x = -5

-2x = -5

x = 5/2

x = 2.5

Therefore, based on the centroid theorem, the value of x is: 2.5.

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Answer:

20,80

Step-by-step explanation:

\(Let\ Abduls\ present\ age\ be\ x\\His\ Grandfather's\ present\ age\ = 4x\\\\Abdul's\ age\ before\ 10\ years=x-10\\His\ Grandfather's\ age\ before\ 10\ years =4x-10\\\\We\ are\ given\ that\ ,\\Abdul's\ Grandfather's\ age\ before\ 10\ years = 7 * Abdul's\ age\ before\ 10\ years\\Hence, \\4x-10=7(x-10)\\4x-10=7x-70\\-10+70=7x-4x\\60=3x\\x=20\\Hence,\\Abduls\ present\ age\ =20\\His\ grandfather's\ present\ age\ = 4*20=80\)

Answer:

Abdul's age=20 y/o

Grandpa's age=80y/o

Step-by-step explanation:

let Abdul's age be 'x'

so, grandpa's age=4x

Grandpa's age 10 yrs ago= 4x-10

according to the question, grandpa's age 1o yrs ago=7(x-10)

so, 4x-10=7(x-10)

     4x-10=7x-70

by substituting,

     70-10=7x-3x

     60=3x

     60/3=x

      20y/o=x

so, 4x=20*4=80 y/o

Answer:

1.) B (Real Numbers)

2.) A

Step-by-step explanation:

Answer:

121.32  Option # 1

Step-by-step explanation:

168.5 * 0.72 = 121.32

i) Selling price of 20 lemons is ₹12.

ii) The profit is ₹2.

iii) The profit percentage is 20%.

i) Jaya bought 20 lemons for ₹10, which means the cost of one lemon is 10/20 = ₹0.50.

If she sells 5 lemons for ₹3, the selling price of one lemon is 3/5 = ₹0.60.

Therefore, the selling price of 20 lemons is 20 x ₹0.60 = ₹12.

ii) The cost price of 20 lemons is ₹10, and the selling price is ₹12.

So, the profit is ₹12 - ₹10 = ₹2.

iii) The profit percentage is calculated as (Profit/Cost price) x 100%.

In this case, the profit is ₹2 and the cost price is ₹10.

So, the profit percentage is (2/10) x 100% = 20%. Therefore, Jaya made a profit of 20% by selling lemons.

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Answer:

36

Step-by-step explanation:

LCM

9,18,27,36

12,24,36

As given, the 99% confidence interval is (-0.13, 0.37).

To check if the coffee shop owner's claim is justified, we can check if the confidence interval contains zero. If it does, then we cannot reject the null hypothesis (the claim), and if it doesn't, then we reject the null hypothesis.

In this case, the interval (-0.13, 0.37) contains zero, hence we cannot reject the null hypothesis at a 99% level of confidence. Therefore, we can say that there is not enough evidence to support the owner's claim that customers who drink espresso are less likely to use their own cup compared with customers who drink coffee.

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The expression you provided is:

(C² + 2cd - 15d²) / (4c² + 20cd)

To simplify this expression, we can factor the numerator and denominator if possible, and then cancel out any common factors:

Numerator: C² + 2cd - 15d²

The numerator does not appear to be factorable.

Denominator: 4c² + 20cd

We can factor out a common factor of 4 from each term:

4(c² + 5cd)

Now we can simplify the expression by canceling out the common factors:

(C² + 2cd - 15d²) / (4c² + 20cd) = (C² + 2cd - 15d²) / 4(c² + 5cd)

Therefore, the simplified expression is (C² + 2cd - 15d²) / 4(c² + 5cd).

Answer:

2. a^3+2^3=24

1. Jack has 24 pieces of candy and divided them into groups of 3. He put 2 pieces in each group. How many more are in each group?

Step-by-step explanation:

im not sure if this is correct but i tried sorry.

Answer:

C

Step-by-step explanation:

√(3x-5)²=√19

3x-5=√19

3x=√19+5

\(x= \frac{ \sqrt{19} + 5 }{3} \)

Answer:

2

Step-by-step explanation:294/7=42

Answer:

(A)Each triangle has two congruent angles: Angle M is congruent to angle O and Angle R is congruent to angle S.

Step-by-step explanation:

In Triangle MNO

\(\angle M = 54.4$ degrees, \angle N = 71.2$ degrees\\\angle M+\angle N+\angle O=180^\circ\\54.4^\circ+71.2^\circ+\angle O=180^\circ\\\angle O=180^\circ-(54.4^\circ+71.2^\circ)=54.4^\circ\)

In Triangle RST

\(\angle R = 54.4$ degrees, \angle T = 71.2$ degrees\\\angle R+\angle T+\angle S=180^\circ\\54.4^\circ+71.2^\circ+\angle S=180^\circ\\\angle S=180^\circ-(54.4^\circ+71.2^\circ)=54.4^\circ\)

Therefore:

Triangle NMO is congruent to triangle TSR; and

Triangle NMO is congruent to triangle TRS

This is because

\(\angle M \cong \angle O =54.4^\circ; and\\ \angle R \cong \angle S =54.4^\circ .\)

The correct option is A.

Answer:

A

Step-by-step explanation:

Just did the test.

Answer:

y = 52

Step-by-step explanation:

The slope-intercept form is y=mx+b y = m x + b , where m m is the slope and b b is the y-intercept. Combine 52 5 2 and x x . Rewrite in slope-intercept form. Using the slope-intercept form, the slope is 52 .

Answer:

Height is 5.3 inches.

Step-by-step explanation:

2* base + 2*height = 35.8

2*12.6 + 2h = 35.8

h = (35.8 - 2(12.6) / 2

= (35.8 - 25.2) /2

=  10.6 / 2

= 5.3 inches.

Answer:

Step-by-step explanation:

The formula of a perimeter of a rectangle:

\(P=2(l+w)\)

l - length

w - width

We have

\(P=35.8in\\l=12.6in\)

Substitute:

\(35.8=2(12.6+w)\)       divide both sides by 2

\(\dfrac{35.8}{2}=\dfrac{2(12.6+w)}{2}\)

\(17.9=12.6+w\)       subtract 12.6 from both sides

\(17.9-12.6=12.6-12.6+w\\\\5.3=w\to w=5.3\ (in)\)

Answer:

As a fraction = \(\dfrac{30}{100}\)

As a decimal = 0.3

Step-by-step explanation:

Recall that: The total yard of a football field = 100 yards

Tritan played in a football game he caught the ball at the goal line and ran forward 30 yards before he was tackled,

As a fraction;

Tristan run can be represented as = number of run from goal-line/ total length of the field

= \(\dfrac{30}{100}\)

As a decimal= 0.3

Answer:

2.2 (n+4)

Step-by-step explanation:

A recursive sequence is a sequence in which terms are defined using one or more previous terms that are given.

If you know the term n of an arithmetic sequence and you know the common difference, d, you can find the term \((n + 1)\) by tossing the recursive formula to \(n + 1 = a \ n + d\)

We have then:

\(5, 15, 30, 50\)

\(an = (\dfrac{5}{2} ) \times (n) \times (n + 1)\)

Answer:

the recursive formula for 5, 15, 30, 50, is:

an = (5/2) x (n) x (n + 1)

Among the given options for input statements involving int variables X and y, the valid option is b) cin >> x >> y.

This statement uses the extraction operator (>>) to read input values and assign them to the variables x and y consecutively. The extraction operator allows for multiple inputs in a single line, separated by spaces or other delimiters.

This statement ensures that two integer values can be entered and stored correctly in the variables x and y. The extraction operator (>>) is commonly used with the cin object in C++ for input operations. It facilitates convenient and efficient input handling for multiple variables in a single statement.

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The probability that the equivalent strength of the part will be between 439 MPa and 544 MPa is approximately 0.3231

The probability that the equivalent strength of the part made from 1045hr will be between 439 MPa and 544 MPa can be determined using the properties of the normal distribution.

First, we need to standardize the values using the formula: z = (x - μ) / σ, where x is the value, μ is the mean, and σ is the standard deviation.

For 439 MPa:

z1 = (439 - 414) / 85 = 0.2941

For 544 MPa:

z2 = (544 - 414) / 85 = 1.5294

Next, we can find the probability associated with each z-value using a standard normal distribution table or a statistical software.Using the standard normal distribution table, we can find the area to the left of z1, which is approximately 0.6151, and the area to the left of z2, which is approximately 0.9382.

To find the probability between these two values, we subtract the smaller area from the larger area:

P(439 ≤ x ≤ 544) = 0.9382 - 0.6151 = 0.3231

Therefore, the probability that the equivalent strength of the part will be between 439 MPa and 544 MPa is approximately 0.3231 or 32.31%.

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The percent change from 1994 to 1995 can be computed by which of the following methods.

The percent change from 1994 to 1995 would be computed by the following

Formula: Percent Change = ((New Value - Old Value) / Old Value) x 100Where,

Old Value = Annual caseloads in 1994 = 750

New Value = Annual caseloads in 1995 = 820

Let's put these values into the formula and calculate the percent change.

Percent Change = ((820 - 750) / 750) x 100

Percent Change = (70 / 750) x 100

Percent Change = 0.093 x 100

Percent Change = 9.3%

Therefore, the percent change from 1994 to 1995 would be 9.3%.

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