2,685 Answered Questions for the topic SAT math

Sat Math Math Act Math Maths

05/26/21

Quadratic function
Quadratic function f(x) = 1/3[(x+p)²+q] , y=4 , roots are 3 and 7.How to find the values of p and q?
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05/26/21

Question, Describe the sampling method used.
a) A seat belt factory randomly selects a time each hour and then tests the next10 seat belts on the factory line.Would this be simple random or systematic? Please explain!
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05/25/21

Histogram Question, Please Help!
Calculate the bin width that would make five intervals then make a frequency table and draw a histogram. Please also provide a good explanation.
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05/25/21

Integrals Problem
The marginal cost of manufacturing x yards of a certain fabric is C′(x)=3−0.01x+0.000006x^2 (in dollars per yard). Find the increase in cost if the production level is raised from 1500 to 9500... more
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05/25/21

Integrals Problem

A factory produces bicycles at a rate of 95+0.1t^2 −1.1t bicycles per week (t in weeks). How many bicycles were produced from day 15 to 28?
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05/25/21

Integrals Problem

The interval [0,4] is partitioned into n equal subintervals, and a number xi is arbitrarily chosen in the i^th subinterval for each i. Then:lim (n→∞) n ∑ i=1 [(2xi+3)/n] = ?
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05/25/21

Integrals Problem

Estimate the area under the graph of f(x)=(x^2)+3x from x=5 to x=8 using 3 approximating rectangles and left endpoints.Approximation =
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Sat Math Math Statistics

05/25/21

What is the predicted response value? Please explain how to get the answer.
You run a regression analysis on a bivariate set of data (n=89). With ¯x=27.6 and ¯y=62.8, you obtain the regression equation y = 3.918x - 38.054with a correlation coefficient of r=0.058. You want... more
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Sat Math Math Precalculus Sat

05/24/21

precalculus math

Solve 3sin(4x)=2 for the two smallest positive solutions A and B, with A < B A =   B =   Give your answers accurate to at least two decimal places.
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05/24/21

Solve cos(x)=−0.9 precalculus

Solve cos(x)=−0.9 on 0≤x<2πThere are two solutions, A and B, with A < B  A =   B =   Give your answers accurate to 3 decimal places
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05/24/21

Solve sin(x)=−0.53

Solve sin(x)=−0.53 on 0≤x<2π There are two solutions, A and B, with A < B and A and B in radians to 4 decimal places.A = B =   
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05/24/21

Solve sin(x)=0.71
Solve sin(x)=0.71 on 0≤x<2πThere are two solutions, A and B, with A < BA =   B =   Give your answers accurate to 3 decimal places
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05/24/21

Find all solutions precalulcus need help its due soon
Find all solutions to 2cos(θ)=−√2 on the interval 0≤θ<2π θ =   Give your answers as exact values, as a list separated by commas.
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05/24/21

Find all solutions precalculus hw need help

Find all solutions to 2sin(θ)=√2 on the interval 0≤θ<2π θ =    Give your answers as exact values, as a list separated by commas.
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Sat Math Math Geometry

05/24/21

Find the values of x and y. Show all of your calculations and an explanation of how you used geometry concepts to determine the method you used.
Find the values of x and y. Show all of your calculations and an explanation of how you used geometry concepts to determine the method you used. WRITER
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Sat Math Math

05/23/21

I am reading a study which explains it has an odds ratio-1.95 and (95% confidence interval 1.47-2.59 p-<0.001) can anyone explain what this means please

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05/23/21

Changes in graphs
1. School A’s prom committee representing the number of students attending the prom and the cost of prom are given by the graph below. You need to Explain how the original graph for school A will... more
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05/23/21

graphical models
1. a) Explain how you know which of the graphs below represent a linear relation or quadratic relation. Consider the description for the path of each graph in your explanation as well. b) Determine... more
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05/23/21

Linear/ or Quadratic models
Determine and explain which table of values represents a linear model, quadratic or neither. Use language such as differences and rate of change to provide a reasoning. t H ... more
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05/23/21

Linear or Quadratic
Justify (provide a reasoning and math evidence) which equation(s) below represents are linear relation, quadratic relation or neither. y = -4 + 8x  y = -4 + 8x2  y = -4 + 8x4 y = 8(x + 4)  y = -4... more
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Sat Math Math

05/23/21

Coordinates of intersect
11x + 4y = 2-2x + 2y = 1co-ordinates of the point where the lines with the following equations intersect?
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Sat Math Math Parabola

05/23/21

x-intercepts of parabola
y = -0.33x^2 + 0.84x + 6x - intercepts of the parabola?
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05/23/21

Integrals Problem

 Consider the function f(x)=(9)/(x^(2))-(7)/(x^(7)) . Let  F(x) be the antiderivative of f(x) with F(1)=0.Then F(x)=
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05/23/21

Integrals Problem

Suppose f''(x)= -25sin(5x) and f'(0)=-5 and f(0)=6f(pi/4)=
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05/23/21

Please help with the following Probability Problem
1.Robert's friends assure him that if he asks Kate to marry him, there is an 85% chance that she will say yes. If there is a 55% chance that Robert will summon the courage to ask Kate to marry him... more
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