4. A ladder 20 ft long leans against a sloping embankment, its foot being secured 10 ft from the base of the embankment and its top reaches the top of the embankment. If the sloping side of the embankment is 15ft, 4.1. What angle does the ladder make with the horizontal ground?

Q: Type I error: Washers used in a certain application are supposed to have a thickness of 2…

A: Given: null hypothesis H0: μ = 2 this means that the thickness of the mean washers is 2 millimeters.…

Q: 14. Let Tbe the ring in Example 8. LetS=SET|f{2) = 0f. Prove that Sis a subring of T.

A: To show that S=f∈T|f(2)=0 is a subring of the ring T of all the continuous real functions we must…

Q: Number 1

A: Obtain the probability that all four have dyslexia. The probability that all four have dyslexia is…

Q: Directions: State each discontinuity, x-intercept, and y-intercept. Then sketch a graph. x2 -4 1.)…

A: Given: f(x)=(x2-4)/x-2

Q: Topic Study Guide 1. AA'B'C' is the image of AABC after dilation with scale factor. AA"B"C" is the…

A: (1)  given ∆A'B'C' is the image of ∆ABC after dilation with scale factor 25given ∆A''B''C'' is the…

Q: 1. Find all cquivalent classes determined by congruence modulo 5 on Z.

A: The equivalent classes under modulo n is defined by, a=x∈ℤ: x≡amod nIn the question n=5a=x∈ℤ: x≡amod…

Q: Now that you have looked at the descriptive side of the regression analysis, let's turn to what…

A: Here we have given the regression output of the regression analysis of happiness score on life…

Q: 1.) Is the following UPC numbers valid codes 0-51231-69421-5

A:

Q: 1. Let points A, B, C be located as shown in Figs. 4.11 and 4.12. Construct the harmonic conjugate…

A:

Q: 1. Let ci = V2, and cn+1 show Cn is bounded and monotone. Then use a common trick to find the limit.…

A:

Q: actor each polynomial. 1. x2 2-14x + 49 2. x2 +2x + 1 3. x2 +7x + 14 (x-1) x2+ 18x + 81 5. y2-20y+…

A: Consider the polynomial x2 + 7x + 14 The above polynomial could not factor further since it has no…

Q: What is the probability of a Type I error?

A: The type I error is defined as rejecting the null hypothesis when actually it is true. Let X denote…

Q: 4. If each of a set of raw scores is transformed into a Z-score, the new distribution will have a…

A: 4) The mean and standard deviation of the normal distribution are µ and σ.

Q: 7. If AABC = AXYZ, under what circumstances is ABCA = AXZY?

A:

Q: 8 The value of the digit in the hundreds place in the number 653,841 is 1 the value 10 of the digit…

A:

Q: Number 1

A: We know that if a graph y=f(x) is translated a units horizontally and b units vertically, then…

Q: 1. In the graph to the following: 120 a. Is the data skewed left or right? b. If one of lines a and…

A:

Q: When ordering a wrapped bouquet, customers have the option to select between brightly colored paper…

A: Suitable test is to be identified

Q: monthly, so that it will grow to $100000 for their son's college tuition in 15 years? (Round your…

A:

Q: 1. Find the elements of surface area dS and dS, in terms of du and dv, for the surface S given…

A: Vector calculus

Q: EXAMPLE 3 Evaluate fE Vx + z'dv, where E is the region bounded by the paraboloid y = x + z and the…

A: To evaluate the below triple integral. ∫∫∫Ex2+z2dV Here E is the region bounded by the paraboloid…

Q: 1. State A with a population of 256,000 and 10 representatives or state B with a population of…

A: Given that - State A with a population of 256,000 and 10 representatives or state B with a…

Q: Number 6.12

A: From part (6.11), Let x be the random variable denote that the amount of snow fall between 1 inch…

Q: 3. Find the general solution of y" + 14y' + 49y = 0.

A: Given that  y"+14y'+49y=0  To find the general solution

Q: A person walks of a hour. Which complex fraction when simplified will compute the unit rate of miles…

A: