Calculate the length of the circumference of a circle with diameter of 9.2cm?
Answers
So you get 28.9 cm
Diameter= 2 x pi
Circumference= 9.2 x pi
9.2 x 3.14 = 28.888 cm
Related Questions
Identify each expression that represents the slope of a tangent to the curve y= -x^3+17x^2-x+3 at any point (x,y).
Solve the inequality. q + 12 – 2(q – 22) > 0
The graph shows two lines, A and B:A graph is shown with x- and y-axes labeled from 0 to 6 at increments of 1. A straight line labeled A joins the ordered pair 3, 0 and the ordered pair 0, 6. Another straight line labeled B joins the ordered pair 0, 0 and the ordered pair 5, 5. Based on the graph, which statement is correct about the solution to the system of equations for lines A and B? A (0, 6) is the solution to both lines A and B. B(0, 6) is the solution to line B but not to line C(2, 2) is the solution to both lines A and B. D (2, 2) is the solution to line A but not to line
A bowl holds 100 peanuts . how many bowls would hold a million peanuts?
Answers
hi,
2x^2+11x+15=(x+3)(2x+5) <<<ANSWER
Hope that helps...
C 3/5
D - 5/3
Answers
Answer:
A
Step-by-step explanation:
Calculate the slope m using the slope formula
m =
with (x₁, y₁ ) = (- 3, 4 ) and (x₂, y₂ ) = (2, - 1 )
m = =
=
= - 1 → A
C. The teacher does not have enough information to make a conclusion about the average time on the test.
D. Her students, on average, do take the 30 minutes as the textbook company stated.
Answers
Answer:
A. Her students, on average, do not take 30 minutes on the quiz, contrary to what the textbook company stated.
Step-by-step explanation:
This is a normal distribution problem with a two-tailed hypothesis test. This characteristics helps to determine the hypothesis, which is the first step in a hypothesis test.
So, the null hypothesis would be: .
The alternative hypothesis would be: .
In this problem, we don't use inequality relations because the teacher performed a two-tailed test, which only have to options, equal or not equal.
In second place, we have to determine the significance level, which is 5%, this means that the two tales rejecting zones must be equal to 5%, that is, 2.5% for each tale. This significance level is a percentage that refers to the probability of the null hypothesis to reach that zone, as you can see, it's a low probability, so if the null hypothesis reaches that zone, it means that the data has significance, it's reliable.
Now, we have to calculate the z-score, which is gonna tell us if the null hypothesis can reach the rejecting zone or not. The equation to find z-value is: ; where x is the sample mean, u is the population mean, o is the standard deviation and n is the sample.
Replacing all values:
.
Hence, the z-value is -5.26, which is located in the left side of the population mean. Now, we have to use the z-table to know if the null hypothesis is rejected or accepted.
So, according to the table the probability value (p-value), for a 5% of significance level, is 0.0001. But, this is a two-tailed test, so the p-value is actually 0.0001(2) = 0.0002.
Therefore, the p-value is way lower than the level of significance 0.05, we must reject the null hypothesis, which means that there's no enough evidence to accept it. So, according with the test, the students don't take 30 minutes on the quiz, the correct answer is A.
Answer:
A. is the correct answer
Step-by-step explanation:
Hope that this helps. Peace and Love
Answers
Answers
u · v = 7· 21 + 2 · 6 = 147 + 12 = 159 ≠ 0
Vectors are parallel if the angle between them is 0°, or cos ( u, v ) = 1
cos ( u, v ) = ( u · v ) / ( | u | · | v | ) =
= 159 / (√(7² + 2²) · √(21² + 6²) ) =
= 159 / ( √ (49 + 4 ) · √ ( 441 + 36 ) ) =
= 159 / (√53 · √477 ) = 159 / 159 = 1
Answer : The vectors u and v are parallel.
Answer:
Parallel
Step-by-step explanation:
orthogonal: dot product of u times v= 0 degrees
utimesv= 7x21+2x6=147+12=159
Parallel: cos (u,v)=1
cos (u,v)=(u·v)/ IuI·IvI
cos (u,v)= 159/ (sqrt 7^2+2^2)·(sqrt 21^2 +6^2)
159/(sqrt 49+4) ·(sqrt 441+36)
159/(sqrt 53)·(sqrt 477)=
159/159
=1; therefore it is parallel
A) 0
B) 1
C) 20
D) infinitely many solutions
Answers
Based on the calculations, the value of x is equal to: D) infinitely many solutions.
Given the following data:
How to determine a solution.
In this exercise, you're required to solve for a solution that satisfies the given equation. Thus, we would simplify the equation and find the value of x as follows:
Opening the bracket, we have:
Next, we would rearrange the equation by collecting like terms:
Read more on equations here: brainly.com/question/13170908
3(2x - 5) = 6x - 15
3 * 2x - 3 * 5 = 6x - 15
6x - 15 = 6x - 15
0 = 0
The correct result would be D) infinitely many solutions.