63 Answered Questions for the topic Substitution

Substitution Estimation

05/17/18

a total of 60 hand weights some of the weights are 3 pounds and the rest are 5 pounds if there are 10 more 5 pound weights then 3 pound weight how many of each

it is the gym instructor and i need help solving this problem. i don't know how to find the equations 
Substitution Word Problem

04/10/18

Solve a system of equations using substitution

Andrew and his little sister are saving up money to buy a joint birthday present for their mother. Andrew already has $27 saved and plans to save $14 per week from his allowance. His sister has $21... more
Substitution Systems Of Equations

03/22/18

How do you solve this System of Equations?

Levi purchased a total of 50 ride and game tickets and the amusement park and spent $29. if ride tickets cost 75 cents each and game tickets cost 50 cents each, how many ride tickets did he purchase?
Substitution

03/18/18

The sum of two numbers is 18. The difference between three times the lesser number and the greater number is 10.

so confused, help please!
Substitution

02/27/18

Linear systems substitution

Y =3x+2 y=-3x-4
Substitution

01/25/18

How to solve y=-2x - 1. y=-4x- 5

I need an answer and how to solve it. Only because I struggle at it in pre algebra. Iwould like it if y’all helped   
Substitution

10/31/17

Substitution word problem

a student bought 1 box of crayons and 5 reams of paper for $54. She bought 5 boxes of crayons and 3 reams of paper for $50. What is the cost of each vox of crayons and each ream of paper?

07/06/17

Substitution/Elimination Form

Substitution Form: 2x-3y=2 x+y=-1 x+y=-1   Elimination From:  2x/3 - 4y/5 = 1 and 3x-y=-7

05/25/17

3x-2y=-7. Y=x+4

Use substitution to solve the system of equations 
Substitution

02/15/17

I am learning about substitutions. The equations are -3x+6y=4 and 2x+y=4.

So I tried doing the equation out and I got fractions for the ordered pairs. I got x=4/3 and y=20/3. Our teacher has us do checks so when I checked the problem out it didn't work out. 
Substitution

12/03/16

substitution word problem

For this problem, I know how to solve it, but can't set it up. I have  x+y=3000 0.70x+0.35y=(0.58)(300) but it's quite right. Thanks!   A silversmith has two alloys, one containing 70% silver... more

08/22/16

Solve system by substitution

The school that Anjali goes to is selling tickets to a play. On the first day of ticket sales the school sold 11 senior citizen tickets and 14 child tickets for a total of $211. The school took in... more
Substitution Infinite Sums

08/21/16

What is x equal to in this equation

1=sqrt(x+sqrt(x+sqrt(x+sqrt(x+... Using a substition, it seems you can get 1=sqrt(x+1), but that leads to x=0, which seems wrong when you plug it back into the original equation.
Substitution Analytic Geometry

08/14/16

Solve the following linear system (substitution)

Solve the following linear system (substitution)    2x-5y=12 x+10y=-9
Substitution

05/08/16

The sum of two numbers is 12. Four times the smaller number is two less than the larger. What are the two numbers?

Solve by substitution
Substitution Math

03/08/16

how would you substitute x=-4y and 3x + 2y = 20

I need help on a really hard problem it's substitution equations  
Substitution

01/27/16

-x+y=4 and 3x-2=-7

Substitution finding x and y
Substitution Substitution Method

01/18/16

Solve the system of equations using substitution...

y=-6x+21 -3x-3y=-18
Substitution Math Algebra Equation

10/18/15

please help

Use substitution to solve the following system of equations:   4x-y=5 2x+3y=-8

10/15/15

Linear Systems Word Problem

Josie wants to buy Internet access. One service provider charged a flat rate of $34.95/month. A second charges $25/month plus $0.33/hour. For what number of hours per month should Josie choose the... more
Substitution Math Calculus Integrals

08/16/15

integrating

when integrating ∫sin3xdx, a good first move would be to:   a) use u-substitution, letting u=sinx, and then integrating ∫u3du   b) use u-substitution, letting u=sin2x   c) rewrite the problem... more
Substitution Math Calculus Ap Calc

08/15/15

u-substitution

When integrating  ∫esinxcosdx, a good choice to use for your u-substitution would be which of the following:   a) u=cosxb) u=sinx c) u=esinx  

08/11/15

substituting a value into an integrand

if the substitution √(x)=sin(y) is made into the integrand of (with the upper limit of: 1/2  and the lower limit of: 0) ∫ ( (√(x) )/( (√(1-x) )dx , the resulting integral is _______________.    
Substitution

07/15/15

How many children and how many adults were admitted?

The admission fee at an amusement park is $1.50 for children and $4 for adults. On a certain day, 302 people entered the park, and the admission fees collected totaled 828.00 dollars. How many... more

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