01/22/23

A tank is made in the shape of a closed cylinder with a hemisphere at one end. The tank has a volume of 30 m3
A tank is made in the shape of a closed cylinder with a hemisphere at one end. Thetank has a volume of 30 m3. Let r be the radius of the cylinder (and hemisphere),and h be the height of the... more
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01/21/23

How many natural numbers m such that: for any integers a,b such that a-=b(mod120) the following congruence is also true:a-=b(mod m)
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01/14/23

Please help answer with steps on how to do it.
The grade point averages (GPAs) of all college students are normally distributed with mean 2.1 and standard deviation 0.5.Part AAbout  % of all students have the GPA at least 1.6.(Rounding the... more
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01/14/23

Pre-calculus help?

Sequence1: 1/2, 7/6,11/6,5/2..sequence2:1/2,1/3,2/9,4/27,…determine whether each sequence below is arithmetic or not. Provide support for your conclusion
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01/08/23

I know it a lot I’m just confused

1)Find the domain of the function (f/x)(x)=x^2-4x-5 and g(x)=25a){x|x≠-1or5}b){x|x≠-5or5c){x|x≠-1}d){x|x≠-5}2)find the (fog)x when f(x)=x^2+6+5 and g(x)=1/x+13)which function has asymptote at... more
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01/08/23

what's the equation of a line parallel to y=-1/4x+3
Algebra 1
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01/06/23

The picture shown below has a uniform frame-width of 3/4 inches. What is the approximate area, in square inches, of the viewable portion of the picture?
The picture shown below has a uniform frame-width of 3/4 inches. What is the approximate area, in square inches, of the viewable portion of the picture?
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12/26/22

MATH HELP PLEASE
A school play is being produced at a School. For every 3 boys working there are 6 girls working. ⅛ of the girls and ⅓ of the boys are working on building the set. Which of the following numbers... more
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12/22/22

(Show your work please) Rewrite in simplest rational exponent form square root of x times the fourth root of x. Show each step of your process.
Rewrite in simplest rational exponent form . Show each step of your process.
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12/17/22

A population of values has a normal distribution with μ = 135.4 and σ = 80.7. You intend to draw a random sample of size n = 12 .
-Find the probability that a single randomly selected value is less than 207.6. P(X < 207.6) =-Find the probability that a sample of size n=12n=12 is randomly selected with a mean less than... more
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12/17/22

Suppose a=8 b=8√3
a. If γ = 90°, solve the triangle.b. If c = 9(1 +√3), how many triangles can be formed? If there are none, explain why.Otherwise, solve the triangle/s.c. If α = 30° what are the possible values for... more
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12/17/22

If A is n x n, what is the determinant of scalar k times A?
If A: n x n, prove det(kA) =k^n det(A).
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11/30/22

Guys can you help me on this question please I am so confused!!!!!
The perimeter of a wooden rectangular deck is 90 feet. The length is 5 feet less than 4 times the width. What is the length and the width of the deck?
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11/29/22

i need help for solving the linear function f with values f(1) = 6 and f(-2) = -3
i need to turn that into y = mx + b and f(x) =
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11/28/22

Need help Pre Cal Question

Two fire lookout stations are 14 miles apart, with Station B directly east of station A. Both stations spot a fire. The bearing of the fire from Station A is N35° E and the bearing of the fire from... more
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11/27/22

Precalc: Prove the Identity: sin2x/1-cos2x = 2csc2x-tanx
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11/27/22

Initial value problems
Solve the following initial value problems a) f'(x) = 5ex - 3sin(x), f(0) = 0b) v(t) = 3t5 -11t + 9, s(1) = 5 v(t) is the velocity , s(t) is its position
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11/27/22

Statistics Homework
The mean SAT score in mathematics is 541. The standard deviation of these scores is 39. A special preparation course claims that the mean SAT score, μ, of its graduates is greater than 541. An... more
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11/26/22

Class of 27 students, choose 5 students, atleast 1 girl + more boys than girls
as title, my question is what is the probability that in class of 27 students (19 boys and 8 girls), I need to pick 5 studentsa) atleast one will be girlb) there will be more boys than girls
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11/25/22

Calulus derivatives

Consider the function  𝑓(𝑥)=4sin𝑥+𝑥2+5𝑥−10 with domain the closed interval [0,2𝜋](a) Show that  𝑓(𝑥)  is increasing on its domain. Explain clearly your reasoning.(b) Find the interval(s)... more
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11/24/22

staticsCentral Limit Theorem with Mea
An operation manager at an electronics company wants to test their amplifiers. The design engineer claims they have a mean output of 145 watts with a variance of 144.What is the probability that... more
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10/19/22

Peicewise function

First half hour = freesecond half hour = $2.00each additional half hr = $1.00max daily rate = $24.00 write price wise function with at least one floor or ceiling function to model the cost of... more
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