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Linear Algebra

09/30/22

Granola costs $2.50 per pound. Assorted nuts cost $5 per pound. How many pounds of granola and nuts are needed to make 7 pounds of trail mix that costs $4 per pound?

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Linear Algebra

09/30/22

heeeeey help lol

greg was 50 yrs old when his son turned 12.in how many yrs time would he be thrice as old as his son?thanks :)

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Linear Algebra

09/30/22

help? yaya thanks

tina has 2000 pencils. lara has (600+3x) pencils. if tina gives (250+2x) pencils to lara, lara would have thrice as many pencils as tina.find the value of x.

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Linear Algebra

09/30/22

a ferry travels at x km/h. a boat travels at 8 km/h slower than the ferry.the ferry and boat leave from the same harbour but travel in opposite directions.after 2 hrs, they are 200 km apart. find... more

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Linear Algebra

09/29/22

Teresa will spend less than $28 on gifts. So far, she has spent $18. What are the possible additional amounts she will spend?

use c for additional amount teresa will spend

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Linear Algebra Math Calculus

09/29/22

matrix linear independence

the vectors:v = [3, -10, 26]u = [-3, 9, -28+k]w = [1, -4, 10]are linearly independent if k does not equal what???

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Linear Algebra

09/29/22

Write a linear equation in slope-intercept form that passes through (-2,-3) and (0,0)

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Linear Algebra Math

09/29/22

writing equations in slope intercept form and standard form

write the equation of the line passing through [1,2] and [-2,5] in slope intercept form and standard form

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Linear Algebra Algebra 1 Algebra 2 Prealgebra

09/28/22

f(x) = -2x2 + 3x + 1 What is f(4) ?

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Linear Algebra

09/28/22

A yard has a perimeter of 228 feet. If four times the length of the yard equals fifteen times the width, what are its dimensions?

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Linear Algebra Math Calculus Mathematica

09/27/22

matrix null space

A = 2x4 matrix:( row 1= -6, 2, -4, 4)(row 2 = 6, -2, 4, -4)Find a spanning set for the null space of A (4x3)

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Linear Algebra

09/27/22

How do I use the properties of inverses?

Use properties of Inverses to verify the identity (assume all indicated operations are defined): A(A^-1 + B^-1)B(A+B)^-1= In

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Linear Algebra

09/26/22

Linear Decrease

the population of a town today is 20000 people.(a) If the population decreases linearly and the decrease is 9% in the first year, what will the town's population be in 10 years?

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Linear Algebra

09/24/22

binary operations

a⊗b=a2+b+4a⊗b=a2+b+4 Simplify each of the following. Do the order of operations (do what is in parentheses first). (7⊗5)⊗3

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Linear Algebra Electrical Engineering

09/24/22

Convolution and solving for the Toeplitz and Hankel matrices

Some linear functions associated with a convolution system. Suppose that 𝑢 and 𝑦 are scalar-valued iscrete-time signals (i.e., sequences) related via convolution:𝑦(𝑘) = ∑j ℎj𝑢(𝑘 − 𝑗), 𝑘 ∈ ℤ, where... more

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Linear Algebra Electrical Engineering

09/24/22

Show that for matrices 𝐴, 𝐵 ∈ ℝnxn, a vector 𝒘 = 𝐴𝐵𝒙 can be written as 𝒘 = ∑ni=1 (𝒃iT𝒙)𝒂i

Show that for matrices 𝐴, 𝐵 ∈ ℝnxn, a vector 𝒘 = 𝐴𝐵𝒙 can be written as 𝒘 = ∑ni=1 (𝒃iT𝒙)𝒂iwhere 𝒃𝑖T is the 𝑖th row of matrix 𝐵, and 𝒂i is the 𝑖th column of matrix 𝐴.(Hint: Let 𝒛 = 𝐵𝒙, then 𝒘 = 𝑧1𝒂1... more

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Linear Algebra Math Algebra 1

09/22/22

algebra one grade 8

fatima earned an 85 average in her science class. The average is based on 6 tests that she takes over the span of the marking period. On her first four tests she earned a 83, a 78 an 87 and an 80.... more

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Linear Algebra

09/21/22

Linear equations

What is aquation for four less than 4 times a number is eighteen?

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Linear Algebra

09/21/22

Linear equations

How many ounces of a 10% acid mixture needs to be mixed with a 30% acid mixture to get 30 ounces of a mixture that is 25% acid?

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Linear Algebra

09/20/22

pls help n give formula ~!

helen's monthly pocket money is $50. juliet's monthly pocket money is $45.helen's average daily expenditure is $x. juliet's average daily expenditure is $(2/3x).after 2 weeks, juliet has $3 more... more

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Linear Algebra

09/20/22

Solve the following system of linear equations

1. 3x − y = 0 −x + y = 4 2. x + 2y = 5 x + 5y = 9 3. 3x − y = −2 −5x + y = −10 4. x + y = 0 4x − y = −3

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Linear Algebra

09/19/22

HELP! pleasepleaseplease

natalie is 4x years old. her sister, mandy is 3 years older than her. 4 years ago, their total age was 51 years, find natalie's present age.

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Linear Algebra

09/19/22

PLEASE HELP! confused :(

to fill a water tank, mr tran needs 1 pail and 1 water barrel. the capacity of 1 pail is (3z-5)L and that of 1 water barrel is (9z-10)L. if the capacity of the water tank is 91L, what is the... more

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Linear Algebra

09/18/22

Todd had 6 gallons of gasoline in his motorbike. After driving 150 miles, he had 3 gallons left. Compute the slope, or rate of change in the amount of gasoline.

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Linear Algebra

09/12/22

The function is defined as g(x)= 5/-2x^2+6x. find g(x+4)

Write your answer without parentheses, and simplify it as much as possible

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Granola costs $2.50 per pound. Assorted nuts cost $5 per pound. How many pounds of granola and nuts are needed to make 7 pounds of trail mix that costs $4 per pound?

heeeeey help lol

help? yaya thanks

hi help thanks :D

Teresa will spend less than $28 on gifts. So far, she has spent $18. What are the possible additional amounts she will spend?

matrix linear independence

Write a linear equation in slope-intercept form that passes through (-2,-3) and (0,0)

writing equations in slope intercept form and standard form

f(x) = -2x2 + 3x + 1 What is f(4) ?

A yard has a perimeter of 228 feet. If four times the length of the yard equals fifteen times the​ width, what are its​ dimensions?

matrix null space

How do I use the properties of inverses?

Linear Decrease

binary operations

Convolution and solving for the Toeplitz and Hankel matrices

Show that for matrices 𝐴, 𝐵 ∈ ℝnxn, a vector 𝒘 = 𝐴𝐵𝒙 can be written as 𝒘 = ∑ni=1 (𝒃iT𝒙)𝒂i

algebra one grade 8

Linear equations

Linear equations

pls help n give formula ~!

Solve the following system of linear equations

HELP! pleasepleaseplease

PLEASE HELP! confused :(

Todd had 6 gallons of gasoline in his motorbike. After driving 150​ miles, he had 3 gallons left. Compute the​ slope, or rate of change in the amount of gasoline.

The function is defined as g(x)= 5/-2x^2+6x. find g(x+4)

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A yard has a perimeter of 228 feet. If four times the length of the yard equals fifteen times the width, what are its dimensions?

Todd had 6 gallons of gasoline in his motorbike. After driving 150 miles, he had 3 gallons left. Compute the slope, or rate of change in the amount of gasoline.