08/28/20

Write an expression in terms of x that represents the number of feet Alexandra has walked toward John since they started walking.
John and Alexandra are 220 feet apart when they start walking toward one another. They are walking at the same speed, so whenever John travels some number of feet, Alexandra travels the same number... more
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08/24/20

How do you find the solution set of a matrix? Thank you!
1 0 0 2 3 | 40 1 0 5 6 | 90 0 1 1 1 | 7I'd like to see how to do this big matrix
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08/24/20

Find and simplify the difference quotient

find and simplify the different quotient F(x+h)-f(x)/h for the following function f(x)=ax^2 + bx + c where a DOES NOT equal 0
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08/19/20

Calculus in economics (2)
If the current production level is x items with cost C(x), then the cost of computing h additionial items is C(x+h). The average cost of those h items is (C(x+h)−C(x))h . As we analyze the cost of... more
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08/19/20

Find a linearly independent set of vectors that spans the same subspace of R4 as that spanned by the vectors
[1 -2 2 -3], [0 3 -1 3], [-2 -1 -6 3], [1 -4 -1 -3]
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08/18/20

Find the coordinates of P so that P partitions the segment AB in the ratio 1:7 if A(7,14) and B(−1,−2).
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08/16/20

One month Rachel rented 6 movies and 2 video games for a total of $36.
One month Rachel rented 6 movies and 2 video games for a total of $36. The next month she rented 3 movies and 5 video games for a total of $39. Find the rental cost for each movie and each video... more
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08/12/20

Algebra Question
A skier is trying to decide whether or not to buy a season ski pass. A daily pass costs ​$68. A season ski pass costs $400. The skier would have to rent skis with either pass for $20 per day. How... more
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08/12/20

Please help me with this question
  is a square matrix. Select all statement(s) from below choices that are NOT correct.a.) If  then has only one solution for any b.) If  is an eigenvalue of  then we can always find two different... more
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08/11/20

Solve sin(3θ) = -√2/2 for θ in the interval [0,2π) for the first four solutions only.
Solve sin(3θ) = -√2/2 for θ in the interval [0,2π) for the first four solutions only.Enter your answer in exact form and in ascending order.
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08/10/20

Let f ( x ) = 1/(2 x − 5) . According to the definition, f'(x)= lim h-->0
So I have (1/(2(x+h)-5)-1/(2x-5))/h to start. I get (2x-5)2(x+h)-5 as my denominator for the upper part of the fraction. and the numerator is (2x-5)-(2(x+h)-5) from left to right. I get stuck here... more
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08/09/20

algebra problem
Determine the expression for ? that would make the statement true.2^x+2/4=2^?
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08/08/20

Precalculus one
At the beginning of an experiment, a scientist has 312 grams of radioactive goo. After 60 minutes, her sample has decayed to 9.75 grams. What is the half-life of the goo in minutes?
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08/08/20

Dimension of space vectors
What is the dimension of the space of vectors in R^5 having the form of: (a-3b, b-a, a+2b, a, b)? Please show a step by step solution.
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08/07/20

help me I am sow confused

A golf course charges $17 for a package including the full 18-hole course. The course also sells buckets of golf balls for $22 each. The golf course would like to earn $619 by the end of the... more
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08/06/20

Matrix Operations
Let E = [2, -1, 3, 0], & F = [0, 1, -1, 2]Are E and F inverses of each other? Why?
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08/06/20

Performing Matrix Operations
Let A = [0, 1, 2, 3], B = [2, 0 , 1, 1], C = 1, 0, 4, 1, 3, -1], D = [0, 0, 1, -1, 2, 1, 1, 3, 0]For each of the following either state that it is not defined or perform the indicated operation(s).... more
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08/05/20

help with linear measure in geometry
If G is the midpoint of FH, find FG.FG 11x-7GH 3x+9
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08/05/20

Solve 3cos(2x)=2 for the smallest three positive solutions.
Solve 3cos(2x)=2 for the smallest three positive solutions.Give your answers accurate to at least two decimal places, as a list separated by commas
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08/04/20

Math Word Problem
Two mechanics worked on a car, the first mechanic worked for 20 hours and the second mechanic worked for 15 hours and together they charged a total of $2625.what was the rate charged per hour by... more
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08/04/20

Solve the triangle using the Law of Sines. (Assume b and c = 20, and ∠C = 65°. Round the length to two decimal places.)
a = ∠A =  ° ∠B =  °
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08/03/20

Use the Fundamental Theorem of Calculus to find the "area under curve" of f ( x ) = 6 x + 4 between x = 1 and x = 6 .
Use the Fundamental Theorem of Calculus to find the "area under curve" of f(x)=6x+4 between x=1 and x=6.is my lower limit 1 and upper limit 6? I tried graphing the equation on desmos but it's hard... more
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08/03/20

Find the first four partial sums and the nth partial sum of the sequence an. [Hint: Use a property of logarithms to write the nth term as a difference.] A n = 3 log ( n/ n + 1 )

s1=s2=s3=s4=sn=
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07/31/20

Let f(x)=5sqrt{x}+x^2. Use the linear approximation of f at x=8 to estimate f(7.99).
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07/31/20

Translate the sentence into an equation

Seven more than the product of a number and 9 equals 5.Use the variable b for the unknown number
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