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MATH SOLVE
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use the given zero to find the remaining zeros of each function f(x)=2x^4+5x^3+5x^2+20x-12 zero:-2i
General
4 months ago
Which expression is equivalent to (4k−3b)3 in expanded form?64k3−144kb2+108k2b−27b364k3−48k2b+36kb2−27b364k3−144k2b+108kb2−27b364k3−48kb2+36k2b−27b3
General
4 months ago
There are 1111 candidates for three positions at a restaraunt. One position is for a cook. The second position is for a food server. The third position is for a cashier. If all 1111 candidates are equally qualified for the three positions, in how many different ways can the three positions be filled?
General
4 months ago
What are the missing parts that correctly complete the proof Given: Point P is the perpendicular bisector of ABProve: P is equidistant from the endpoints ABDrag the answers into the boxes to correctly complete the proof1. Point P is on the perpendicular bisector of AB given 2.__definition of bisector3.4.__all angles are congruent 5.PX=PX reflexive property of congruence6.__SAS congruency postulate7.__ corresponding parts of congruent triangles are congruent8. Point P is equidistant from the endpoints of AB definition of equidistant
General
4 months ago
Lin has 4 pinecones and some acorns.She has 7 fewer pinecones than acorns.How many acorns does Lin have? Circle the correct answer A 3. C 7B 4. D 11Tom choose A. This is wrong. How did Tom get his answer?
General
4 months ago
PLEASEE HURRY!!!!!!!! Tom determines that the system of equations below has two solutions, one of which is located at the vertex of the parabola.Equation 1: (x – 3)2 = y – 4Equation 2: y = -x + bIn order for Tom’s thinking to be correct, which qualifications must be met? A: b must equal 7 and a second solution to the system must be located at the point (2, 5).B: b must equal 1 and a second solution to the system must be located at the point (4, 5).C: b must equal 7 and a second solution to the system must be located at the point (1, 8).D: b must equal 1 and a second solution to the system must be located at the point (3, 4).
General
4 months ago
When a computer disk manufacturer tests a disk, it writes to the disk and then tests it using a certifier. The certifier counts the number of missing pulses or errors. The number of errors on a test area on a disk has a Poisson distribution with ???? = 0.2. (a) What is the expected number of errors per test area? (b) What percentage of test areas have two or fewer errors?
General
4 months ago
A vendor prepares 100.00 hotdogs every day and sells at $20.00/piece. For each hot dog, he spends $12.00 in the raw material. Additionally he spends $1.00 for packing each hotdog and monthly $50.00, $20.00, $10.00 as food truck rent, electricity and other expenses respectively. Lost sale are taken as $1 per unhappy customer. Leftover hotdogs can be sold for $5.00/piece. On a particular day in June it rained heavily so the vendor was able to sell only 80.00 hot dogs. Determine the vendor’s profit for that day
General
4 months ago
A driving exam consists of 26 multiple-choice questions. Each of the 26 answers is either right or wrong. Suppose the probability that a student makes fewer than 7 mistakes on the exam is 0.29 and that the probability that a student makes from 7 to 18 (inclusive) mistakes is 0.58. Find the probability of each of the following outcomes. a. A student makes more than 18 mistakes b. A student makes 7 or more mistakes c. A student makes at most 18 mistakes d. Which two of these three events are complementary?
General
4 months ago
The heart rate variability (HRV) of police officers was the subject of research published in a biology journal. HRV is defined as the variation in the time intervals between heartbeats. A measure of HRV was obtained for each in a sample of 303 police officers from the same city. (The lower the measure of HRV, the more susceptible the officer is to cardiovascular disease.) For the 62 officers diagnosed with hypertension, a 90% confidence interval for the mean HRV was (6.9,122.9). For the 241 officers that are not hypertensive, a 90% confidence interval for the mean HRV was (144.2,184.9). Use this information to complete parts a through d below. a. What confidence coefficient was used to generate the confidence intervals? (Type an integer or a decimal. Do not round) b. Give a practical interpretation of both of the 99% confidence intervals. C. When you say you are "99% confident," What do you mean? d. If you want to reduce the width of each confidence interval, should you use a smaller or larger confidence coefficient?
General
4 months ago
A man walks along a straight path at a speed of 4 ft./s. A Searchlight is located on the ground 20 feet from the path and is kept focused on the man. at what rate is the Searchlight rotating when the man is 15 feet from the point on the path closest to the searchlight?
General
4 months ago
The weight of potato chips in a medium-size bag is stated to be 10 ounces. The amount that the packaging machine puts in these bags is believed to have a Normal model with mean 10.2 ounces and standard deviation 0.12 ounces.What's the probability that the mean weight of the 3 bags is below the stated amount?a. 0.069b. 0.0478c. 0.9522d. 0.0019
General
4 months ago
A space station in the form of a large wheel, 222 m in diameter, rotates to provide an "artificial gravity" of 9.9 m/s 2 for people located on the outer rim. Find the rotational frequency of the wheel that will produce this effect. Answer in units of rpm.
General
4 months ago
Use the Remainder Theorem to find the remainder for (2x^3-3x^2+6)/(x-1) and state whether or not the binomial is a factor of the polynomial.
General
4 months ago
ᵂᴿᴵᵀᴱ ᴱᴬᶜᴴ ᶠᴿᴬᶜᵀᴵᴼᴺ ᴼᴿ ᴹᴵˣᴱᴰ ᴺᵁᴹᴮᴱᴿ ᴬˢ ᴬ ᴰᴱᶜᴵᴹᴬᴸ!!1. 7/82. 7/153. 4 3/25
General
4 months ago
to communication companies offer calling plans with company X it cost $0.35 to connect and then $0.05 for each minute with company white cost $0.15 to connect in the $0.04 for each minute write and simplify an expression that represents how much more company X charges Fan Company Y in cents for n minutes
General
4 months ago
Estimate and then find the difference.23 1/6-5 6/8
General
4 months ago
How many ml of a 78% acid solution must be mixed with 12ml of a 10% acid solution to make 30% solution?
General
4 months ago
One ticket to a hockey game is $9.00. A season ticket for one person to attend all six home games is $50.00. How much money would a family of four save if they bought four season tickets?
General
4 months ago
A pilot was scheduled to depart at 4:00 pm, but due to air traffic, her departure has been delayed by 10 minutes. Air traffic control approved a new flight plan that will allow her to arrive three times faster than she calculated in her original flight plan. Let x represent the time, in minutes, of her original flight. Create an equation that can be used to predict the number of minutes after 4:00 pm she will arrive at her destination.
General
4 months ago
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