Find the area of a circle with a diameter 4. either enter an exact answer in terms of π or use 3.14 for π and enter your answer as a decimal

Answer:

yes

Step-by-step explanation:

Answer: thats a good question

Step-by-step explanation:

Answer: he will add 2/8 more so it can be full.

Step-by-step explanation: you divide 2/8 by 5/8 and you'll get 1/8.

please give me brainlest

Answer:

Refer to the step-by-step explanation.

Step-by-step explanation:

Come up with a monomial expression and solve it.

A monomial expression is an algebraic expression that consists of a single term. It is an expression that can contain variables, constants, and non-negative integer exponents, but there should be no addition or subtraction between different terms.

Here are a few examples of an monomial expression:

\(\hrulefill\)

Let's work with the monomial expression, 3x²y³z.

To solve this expression, I assume you would like to evaluate it for specific values of the variables x, y, and z. So let x=3, y=2, and z=1.

Plug these values into the expression:

3x²y³z

=> 3(3)²(2)³(1)

=> 3(9)(8)(1)

=> 27(8)(1)

=> 216(1)

=> 216

Thus, the expression is solved.

Answer:

\(W = 13.29^\circ\)

Step-by-step explanation:

Given

\(\sin(W) = 0.23\)

Required

Find W

Take arc sin of both sides

\(W = \sin^{-1}(0.23)\)

Using a calculator

\(W = 13.29^\circ\)

Answer:

Step-by-step explanation:

Answer:

k=40

Step-by-step explanation:

subtract 12 from k we would get 28

The required coordinate of B' is B' = (4, -5), across the y-axis after reflection. Option A is correct.

Transform the shapes on a coordinate plane by rotating, reflecting, or translating them.

here,
Given that a point B (-4, -5) is reflected across the y-axis, the Coordinate of image B' is to be determined.

Since the coordinate is reflected across the y-axis,
The equation of trasformation is given as,
(x , y) ⇒ (-x , y)

So, the image of B,

B' = (-(-4), -5)

B' = (4, -5)

Thus, the required coordinate of B' is B' = (4, -5), across the y-axis after reflection. Option A is correct.

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Answer:

a) Heptagon

b) Pentagon

c) Octagon

d) Hexagon

The names of the polygon are :

1)  Heptagon

2) Pentagon

3) Octagon

4) Hexagon

Given,

Polygons figure.

Here,

The name of polygon is decided based on the number of sides present in it.

Now in the figures,

1) Number of sides : 7

Name = Heptagon

2) Number of sides : 5

Name : Pentagon

3) Number of sides : 8

Name : Octagon

4) Number of sides : 6

Name : Hexagon

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Answer:

The sum of their ages is 29, which we can express as the equation:

P + (P - 11) = 29

Simplifying the equation:

2P - 11 = 29

Adding 11 to both sides:

2P = 40

Dividing both sides by 2:

P = 20

Therefore, Pete's age, represented by "P," is 20 years old.

Based on the time spent per project and the number of projects, the average time spent per outsourced project is 271 hours.

The time spent on all the projects can be found by the formula:

= ∑( Number of projects in continent x Average time per project)

Solving gives:

= (13 x 278) + (6 x 382) + (4 x 279) + (7 x 148) + ( 3 x 298)

= 8,952 hours

= ∑Projects per continent

= 13 + 6 + 4 + 7 + 3

= 33 projects

This is then found as:

= Time spent in total / Number of projects

= 8,952 / 33

= 271 hours

In conclusion, 271 hours was spent on average.

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A counter-example to the given conclusion is the difference between the numbers 15 and 25, where both are positive, but the difference gives a negative result.

Here we are shown some differences between positive numbers:

7 - 3 = 4

8 - 5 = 3

9 - 8 = 1

And the conclusion is:

"The difference of two positive numbers is always positive".

To find a counter-example we just need to find two positive numbers such that the difference between these two positive numbers gives a negative number as a result.

An example of that can be the numbers 15 and 25, if we take the difference we will get:

15 - 25 = -10

Here we can see that the difference between two positive numbers gives a negative number as an outcome, so this is our counter-example.

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The possible measure of ∠C is approximately 50.2° for the given triangle.

In triangle ABC, we know that a = 22 units, b = 20 units, and c = 18 units. To find all possible values of ∠C, we can use the law of cosines, which states that:

c² = a² + b² − 2ab cos(C)

where c is the side opposite angle C, and a and b are the other two sides.

In this case, we want to find angle C, which is opposite side c. Therefore, we can rearrange the law of cosines to solve for cos(C):

cos(C) = (a² + b² - c²) / 2ab

Substituting the given values, we get:

cos(C) = (22² + 20² - 18²) / (2(22)(20))

cos(C) = 0.95

Taking the inverse cosine of both sides, we get:

C = cos⁻¹(0.6364)

C ≈ 50.2° or C ≈ 309.8°

Since the sum of the angles in a triangle is 180°, we know that C must be less than 180°.

Therefore, the only possible value of C is approximately 50.2°.

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The missing decimal number to decrease by 14% is 0.86.

Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.

The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.

We are given that;

Percent= 14%

Now,

14% is equivalent to 0.14 as a decimal, and to decrease by 0.14 we need to subtract 0.14 from 1, which gives 0.86. So multiplying by 0.86 is the same as decreasing by 14%.

Therefore, by algebra the answer will be 0.86.

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Congruent triangles are those triangles which have the same size and form.

Congruent triangles are those triangles which have the same size and form. This signifies that the matching sides and angles are the same.

The two triangles ΔUVW≅ΔABC, therefore, the corresponding sides can be written as,

The corresponding angles will be,

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Answer:

Thats nice

Step-by-step explanation:

The possible values of x, given the number of bets are $54,999, $14,999, and -$1.

The expected winnings would be -$0.97.

The possible values of the net winning would be the amount you win at net if you win first prize, second prize, or nothing.

The possible values would therefore be:
$54,999, $14,999, and -$1.

These show that if you win the first or second prize, you will deduct the $ 1 you bet. And if you win nothing, you would have lost $ 1.

The expected winnings would be:

= ∑ ( Probability of event x Potential net win / loss)
= ( 1 / 3, 000, 000 x 54, 999 ) + ( 2 / 3, 000, 000 x 14, 999 ) + ( 2,999, 997 / 3, 000, 000 x - 1 )

= - $ 0.97

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Using the concept of simple interest and compound interest, the first equation is \(S = 200(1.1)^t\), while the second is S = 250 + 20t

c. It will take over 7 years for the accounts to be equal.

The similarities between simple interest and compound interest is that both deals with saving of money over certain period of time with a fixed rate. While the difference between both is that in compound interest, the interest are compounded while in simple interest it is not. This implies that compound interest is an exponential function while simple interest is a linear function.

Simple interest = P(1 + rt)

Compound interest = P(1 + r/n)ⁿˣ

To solve this, we can write equations;

For the first scenario;

\(S = 200(1.1)^t\)

For the second scenario;

S = 250 + 20t

NB: The first case is a compound interest while the second is a simple interest.

c. To determine when the two accounts will be equal;

\(250 + 20t = 200(1.1)^t\)

Solving for t;

t = 7.01 ≈ 7 years

Therefore, it will take over 7 years for the accounts to be equal

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Step-by-step explanation:

points on the line: (4, -2) & (-5, 3)

gradient of the line = -5/9

general equation for all straight lines: y = mx + c

substitute one coordinate and the gradient into the equation. 3 = (-5/9)(-5) + c

therefore, c = 2/9

so the general equation is y = (-5/9)x + 2/9

For the given function the value of limits are

\(\lim _{x\to 0^-}\left(f\left(x\right)\right)\) is 5

\(\lim _{x\to 0^+}\left(f\left(x\right)\right)\) is 0

\(\lim _{x\to 0}\left x^2+5\)is 5

The given function is f(x)= x²+5, when x≤0

f(x)=2x when x>0

\(\lim _{x\to 0^-}\left(f\left(x\right)\right)\)

Which is \(\lim _{x\to 0^-}\left x^2+5\)

The given limit is a left hand limit as there is minus in the limits

When we apply x as 0 we get the value 5

Now \(\lim _{x\to 0^+}\left(f\left(x\right)\right)\)

So \(\lim _{x\to 0^+}\left 2x\)

The given limit is a right hand limit as there is positive in the limits

When we apply x as 0 we get 0

Now \(\lim _{x\to 0}\left(f\left(x\right)\right)\)

Which is \(\lim _{x\to 0}\left x^2+5\)

We get 5

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Answer:

a)

Calculated Z -value = 2 < 2.326 at 0.02 level of significance

Null hypothesis is accepted

The accuracy rate for fingerprint identification is not significantly different from 0.4.  

b)

P-value of this sample = 0.0455

Step-by-step explanation:

Step(i):-

Given sample size 'n' = 298

Sample proportion

                            \(p^{-} = \frac{x}{n} = \frac{136}{298} = 0.456\)

Population proportion

                          p = 0.4

Null hypothesis :-

The accuracy rate for fingerprint identification is not significantly different from 0.4

H₀: p=0.4

Alternative Hypothesis :-

The accuracy rate for fingerprint identification is  significantly different from 0.4

H₁: p≠0.4

Step(ii):-

Test statistic

               \(Z = \frac{p^{-} -P}{\sqrt{\frac{P Q}{n} } }\)

             \(Z = \frac{0.456-0.4}{\sqrt{\frac{0.4 X 0.6}{298} } }\)

             Z = 2

Given level of significance α=0.02

critical value Z = 2.326

Calculated Z -value = 2 < 2.326 at 0.02 level of significance

Null hypothesis is accepted

The accuracy rate for fingerprint identification is not significantly different from 0.4.  

P- value

P( Z>2) = 1- P( Z <2)

             = 1 - ( 0.5 - A(2)

            = 0.5 - 0.4772

           = 0.0228

Given two tailed test   = 2 ×P( Z >2)

                                      = 2 ×  0.0228

                                     = 0.0456

The p-value is 0.0456

Answer:

28 cups

Step-by-step explanation:

If 7 cups will only fill 1/4 of her pot, multiply 4 by 7 to get 28.

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The value of the margin of error will be 15%.

Standard deviation is the measure of dispersed the data is in relation to the mean. Low standard deviation means data are clustered around the mean, and high standard deviation indicates data are more spread out.

Given that;

The grade point average collected from a random sample of 150 students.

And, the population standard deviation is 0.78.

Now,

We know that,

To calculate the margin of error, the formula is;

⇒ Margin of error = critical value (standard deviation/√sample size)

Substitute all the values, we get;

⇒ Margin of error = 2.33 (0.78/√150)

                            = 2.33 (0.78/12.25)

                            = 2.33 × 0.06369

                            = 0.1484

                            ≈ 15%

Thus, The value of the margin of error = 15%.

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Answer:

B

Step-by-step explanation:

Bc if u search it u p

Answer:

graph c

Step-by-step explanation:

because-3 is lower than y and 2x

The interval where both functions are decreasing is {-1, 2} and it is shown on the number line below.

For any given function, y = f(x), if the output value (range or y-value) is decreasing when the input value (domain or x-value) is increased, then, the function is generally referred to as a decreasing function.

By critically observing the graph of g(x), we can logically deduce that the function g(x) decreases over the interval {-2, 2}. On the other hand (conversely), the function f(x) = -5|x + 1| + 10 decreases over the interval {-1, ∞}.

Therefore, the interval over which both functions decrease is denoted by the intersection of both functions;

Interval = {-1, 2}

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Answer:

20x+80

10/21

Step-by-step explanation:

Answer:

20x+80

10/21

Step-by-step explanation:

20*x+20*4

20x+80

\(\frac{5}{7}*\frac{2}{3}\)

5*2=10

7*3=21

\(\frac{10}{21}\)

Answer:

-0.24 ; 0.71

Step-by-step explanation:

Given that :

Mean number of siblings (m) = 3.76

Standard deviation (s) = 3.18

Z score associated with 3 siblings

x = 3

Using the relation :

Zscore = (x - m) / s

Zscore = (3 - 3.76) / 3.18

Zscore = - 0.76 / 3.18

Zscore = −0.238993

Zscore = - 0.24

2.) proportion of respondents with more than 2 siblings

Using the z probability calculator :

X > 2

Obtain the standardized score :

Zscore = (x - m) / s

Zscore = (2 - 3.76) / 3.18

Zscore = - 1.76 / 3.18

Zscore = −0.5534591

Zscore = - 0.55

Using the z table :

P(Z ≥ - 0.55) = 1 - p(Z ≤ - 0.55) ; p(Z ≤ - 0.55) = 0.2912

1 - p(Z ≤ - 0.55) = 1 - 0.2912 = 0.7088 = 0.71

Answer:

56

Step-by-step explanation:

two of the angles are the same meaning the bottom two are 62. angles in a triangle add up to 180° so you just do 62 + 62 and then take the answer away from 180

62+62=124

180-124=56

Answer:

Don't know sorry

Step-by-step explanation:

Thanks for the points

Answer:

not sure

Step-by-step explanation: