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MATH SOLVE
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Select the correct answer.How many real solutions exist for this system of equations?y = -x + 1y = -x2 + 4x − 2A. zeroB. oneC. twoD. infinite
General
5 months ago
Plz help. Simplifying simplify the answers 9/3215/452/187/187/205/44
General
5 months ago
The table represents the height of a rock that is dropped, h(t), in meters, after t seconds.A 2-column table with 5 rows. The first column is labeled t with entries 0, 0.5, 1, 1.5, 2, 2.5, 3. The second column is labeled h(t) with entries 20, 18.8, 15.1, 9, 0.4, negative 10.6, negative 24.1.When does the rock hit the ground?The rock hits the ground between seconds and seconds after it is dropped.
General
5 months ago
Select the correct answer.Solve the system of equations.y = -2x + 5y = x2 + 3x + 9A. (1,3) and (4,13)B. (-1,13) and (-4,7)C. (-1,7) and (-4,13)D. (-1,-3) and (-4,3)
General
5 months ago
Three different golfers played a different number of holes today. Rory played 9 holes and had a total of 42 strokes. Alicia played 18 holes and had a total of 79 strokes. Rickie played 27 holes and had a total of 123 strokes.Which golfer had the lowest number of strokes per hole?
General
5 months ago
The volume of a pyramid varies jointly as the height and the area of the base. If a pyramid has the measurements V=1144cubic meters, l=8 meters and w=11 meters, and h=39 meters, what is the volume of a pyramid that has a length of 15 meters, width of 46 meters, and height of 48 meters. Round your answer to the nearest hundredth.Find the value of k ( rounded to the nearest hundredth ). Using the value of k, find an equation that represents the general relationship indicated above
General
5 months ago
Solve the system of equations:-5x+y-4z=602x+4y+3z=-126x-3y-2x=-52
General
5 months ago
At the beginning of grade 6, the ratio of number of advanced math students to the number of regular math students was 3:8. However, after taking placement tests common students were moved around changing the ratio of the number of advanced math students to the number of regular math students for the 7:8. How many students started regular math and advanced math if there are 92 students in regular math and advanced math after taking placement tests?
General
5 months ago
Joe wants to purchase an electric keyboard. The price of the keyboard at Macelli’s, with tax, is $2,344. He can save $150 per month. How long will it take him to save for the keyboard?
General
5 months ago
Can you please solve this pllleeaasseee??
General
5 months ago
find the solution in slope-intercept form y+7=-3(x-1) and 3x+y=-4
General
5 months ago
Calculate the percent error1. Jerri estimates that 30 people would attend the dinner event but only 25 people attended.2. Gene estimated the length of the fence to be 150 feet, but the actual measurement was 142 feet.
General
5 months ago
Sample spaces For each of the following, list the sample space and tell whether you think the events are equally likely:(a) Toss 2 coins; record the order of heads and tails.(b) A family has 3 children; record the number of boys.(c) Flip a coin until you get a head or 3 consecutive tails; record each flip.(d) Roll two dice; record the larger numbe
General
5 months ago
psychologist obtains a random sample of 20 mothers in the first trimester of their pregnancy. The mothers are asked to play Mozart in the house at least 30 minutes each day until they give birth. After 5 years, the child is administered an IQ test. It is known that IQs are normally distributed with a mean of 100. If the IQs of the 20 children in the study result in a sample mean of 104.1 and sample standard deviation of 15, is there evidence that the children have higher IQs? Use the a=0.05 level of significance. Complete parts (a) through (d).b) Calulate the P-value.P-value+_______________(round to three decimal places as needed.c) State the conclusion for the test.Choose the correct Anser below.a. Do not reject H0 becasue the P-value is less than the a-0.05 level of significanceb. Reject H0 because the p-value is greater than the a=0.05 level of significancec. Do not reject H0 because the P-value is less than the a-0.05 level of signifcance.d. Reject H0 because the p-value is less than the a=0.05 level of significance.d) State the conclusion in context of the problem.There (1)_____________sufficient evidence at the a=0.05 level of significance to conclude that mothers who listen to Mozart have children with hogher IQs.(1)__is not___is
General
5 months ago
A local marketing company wants to estimate the proportion of consumers in the Oconee County area who would react favorably to a marketing campaign. Further, the company wants the estimate to have a margin of error of no more than 4 percent with 90 percent confidence. Of the following, which is the closest to the minimum number of consumers needed to obtain the estimate with the desired precision? A. 65 B. 93 C. 423 D. 601
General
5 months ago
In a recent poll of 750 randomly selected adults, 589 said that it is morally wrong to not report all income on tax returns. Use a 0.05 significance level to test the claim that 70% of adults say that it is morally wrong to not report all income on tax returns. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. Use the P-value method. Use the normal distribution as an approximation of the binomial distribution.
General
5 months ago
A dormitory has 40 students---12 sophomores, 8 juniors, and 20 seniors. Which of the following is equal to the number of ways to put all 40 in a row for a picture, with all 12 sophomores on the left, all 8 juniors in the middle, and all 20 seniors on the right?
General
5 months ago
In the US court system, a defendant is assumed innocent until proven guilty. Suppose that you regard a court system as a hypothesis test with these null and alternative hypotheses: H0: Defendant is innocent Ha: Defendant is guilty There are 2 possible decisions regarding H0 and 2 possible truths as to the innocence or guilt of the defendant, making 4 possible combinations. What are those 4 combinations? Identify the two correct decisions.
General
5 months ago
Given that x=-1+4i is a zero of f (x)= x^3+x^2+15x-17 find all the zeroes of f
General
5 months ago
visa usa stated that over the last year, the number of friday and saturday sales transactions increased 16% to $38.8 million. what were the total sales transactions at this time lasy year?
General
5 months ago
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