2,578 Answered Questions for the topic Maths

05/17/20

Write the equation that correctly shows the area of the triangle in terms of its height, h. PLEASE HELP!
A carpenter is building a set of trusses to support the roof of a residential home. In the blueprints, she has determined that she needs to make a support triangle with an area 56m2 . She knows... more
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05/17/20

Please Help Me With This Math Question!!!
Write the equation for the following function that represents a horizontal shift left 4 and a vertical shrink by a factor of ½ on the parent function f(x) = x ^ 2
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05/16/20

Partial differential equation

u_x=(1/sqrt(-y))*u_y what is the general solution for u?
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05/15/20

One canned juice drink is 20​% orange​ juice; another is 5​% orange juice. How many liters of each should be mixed together in order to get 15L that is 9​% orange​ juice?
One canned juice drink is 20​% orange​ juice; another is 5​% orange juice. How many liters of each should be mixed together in order to get 15L that is 9​% orange​ juice?How many liters of the... more
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05/15/20

How should I do for this question?
Two particles, A and B, have masses 2m and 3m respectively. The particles are moving in the same direction along the same straight line on a smooth horizontal surface when they collide directly.... more
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05/15/20

Precalculus question?
Suppose T(t)=23sin(2π(t-7)/24)+66 is the temperature (in degrees Fahrenheit) at time t, where t is measured in hours after midnight on Sunday. You paint the exterior door to your house at 5 p.m. on... more
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05/15/20

Precalc question
a) If y=sin(x) on the domain -π/2 ≤ x ≤ π/2, what is the domain D and range R of y=2sin(3x-1)+3? How many solutions does the equation 4=2sin(3x-1)+3 have on the domain D and what are they?b) If... more
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05/14/20

Precalc question
The temperature in Gavin’s oven is a sinusoidal function of time. Gavin sets his oven so that it has a maximum temperature of 300F and a minimum temperature of 240F. Once the temperature... more
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05/14/20

finding the derivative of a specific equation

What is the derivative of N(t)=200te^(2-t)
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Maths

05/14/20

heeeeeeeeeelppp meeeeeeeeeeee
If (-2,1) is the midpoint of the line segment ST and the coordinates of S are (3,9), find the coordinates of T.
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05/13/20

Rationalise the denominator of 6 / sq.rt. 7 -2
Rationalise the denominator of 6 / √7 -2 Show your working clearly
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05/13/20

I answered the question but it says it is wrong.
you happen to notice that the 8% sales tax that your father paid on his new luxury boat came to $3,800. How much must the car itself have cost him?My answer for this question was: 3.518.18
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05/12/20

can someone tell me if my work its correct?
i got these totals.1. $83042. 8 and 120 lost
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05/12/20

Can x^4 be an upper bound for x^7 for a given constant, k ?
If k can be a constant so that: k•(x4) ≤ x7It would have to be for all n values (n being real values greater than zero)
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05/12/20

HELP MATHSWATCH
Sue has 18 sweets. Tony also has 18 sweets. She gives tony x sweets. Sue then eats 5 of her sweets. Tony then eats half of his sweets. Write expressions for the number of sweets Sue and Tony now have. more
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Maths Algebra 1

05/12/20

Math anything to help me
Four more than the product of three and a number x.
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05/12/20

Please solve this question......!
The following data give the numbers of new cars sold by Carpenters Motors Limited during a20-day sale. 8 5 12 3 9 10 6 12 8 8 4 16 10 11 7 7 3 5 9 11A.... more
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05/12/20

The following table shows the amount of caffeine in Alex's bloodstream at various times since he drank a cup of coffee. # of hours since he drank the coffee, t # of mg of caffeine in his bloodstream
The following table shows the amount of caffeine in Alex's bloodstream at various times since he drank a cup of coffee. # of hours since he drank the coffee, t # of mg of caffeine in his... more
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Maths Statistics

05/11/20

How to determine maximum likelihood estimator for this question
confused as to go about this question,it is asking to determine the MLE of this distrubtionf(x,θ ) N=3,X1..X2..X3(x^3) . (e^-x/θ) / 6θ^4where ^ = to the power of
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05/10/20

Please Help Me With These Two Way Tables For Math!!!
The two way table below shows the amount of time students spent studying for their Chemistry test and the grade they earned on the test. 0 - 50  51 - 70  71 - 90 91 - 100 Totals 0 - 1... more
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05/10/20

What is the probability that the student checks out a fiction or non-fiction book?
A student goes to the library. The probability that she checks out a fiction book is 0.45, a work of non-fiction book is 0.28, and both fiction and non-fiction book is 0.10. What is the probability... more
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05/10/20

What is the approximate probability that a randomly selected person will be attending the football game given they are an upper-class student? PLEASE HELP!
At Lewisville University, they are looking into how often students attend football games. Here are the results: ● ·45% of students regularly attend the football games ● Of those that attend... more
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05/10/20

College Algebra : Groups

For each of the following, let the operation ∗ be defined on Z by the given rule.Determine in each case whether Z is a group with respect to ∗ and whether it is an abelian group. State which, if... more
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05/09/20

Algebra: Groups
Question :Determine whether each of the following given sets is a group with respect to the indicated operation. Show your work.(b) The set E of all even integers with operation addition.My work... more
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05/08/20

The equation V(t) = 12,000(0.75)' represents the value of a motorcycle t years after it was purchased. Which statement is true?

The equation V(t) = 12,000(0.75)' represents the value of a motorcycle t years after it was purchased. Which statement is true? 1. The motorcycle cost $9000 when purchased. 2. The motorcycle cost... more
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