anonymous
  • anonymous
please help me on these
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
For the following system, if you isolated x in the second equation to use the Substitution Method, what expression would you substitute into the first equation? 3x + y = 8 -x - 2y = -10 -2y + 10 2y + 10 2y - 10 -2y - 10
anonymous
  • anonymous
Solve the following system of equations: 3x - 2y = 6 6x - 4y = 12 (0, 0) (6, 12) Infinitely many solutions No solutions
anonymous
  • anonymous
The total price of a shirt and a cap is $11. If the price of the shirt was doubled and the price of the cap was 3 times its original price, the total price of a shirt and a cap would be $25. What is the price of a shirt and a cap? Price of a shirt is $9, and price of a cap is $2. Price of a shirt is $10, and price of a cap is $1. Price of a shirt is $8, and price of a cap is $3. Price of a shirt is $7, and price of a cap is $4.

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anonymous
  • anonymous
Harry had $32. He spent all the money on buying 3 notebooks for $x each and 4 packs of index cards for $y each. If Harry had bought 5 notebooks and 5 packs of index cards, he would have run short of $18. A student concluded that the price of each notebook is $5 and the price of each pack of index cards is $1. Which statement best justifies whether the student's conclusion is correct or incorrect? The student's conclusion is incorrect because the solution to the system of equations 3x + 4y = 32 and 5x + 5y = 50 is (8, 2). The student's conclusion is incorrect because the solution to the system of equations 3x + 4y = 32 and 5x + 5y = 18 is (8, 2). The student's conclusion is correct because the solution to the system of equations 3x + 4y = 32 and 5x + 5y = 18 is (5, 1). The student's conclusion is correct because the solution to the system of equations 3x – 4y = 32 and 5x – 5y = 50 is (5, 1).
anonymous
  • anonymous
An equation is shown below: 3 over 2 multiplied by x plus 7 over 2 equals 2 to the power of x What is the solution to the equation? x = 1 x = 3 x = 5 x = 8
anonymous
  • anonymous
Which of the following statements best describes the graph of 3x – 2y = 4? It is a straight line joining the points (6, 2), (5, 1), and (7, 3). It is a straight line joining the points (0, –2), (2, 1), and (–2, –5). It is a curve joining the points (3, –2), (2, 3), and (4, 1). It is a curve joining the points (0, 2), (–2, –1), and (4, 1).
anonymous
  • anonymous
The graph of an equation is shown below: line joining ordered pairs negative 3,2 and 1, negative 2 Based on the graph, which of the following represents a solution to the equation?
anonymous
  • anonymous
(–2,–3) (2, 1) (1, 2) (–3, 2)
anonymous
  • anonymous
whoa hold the phone one at a time is much less intimidating
anonymous
  • anonymous
ok wel the first one
anonymous
  • anonymous
had to scroll way the heck up solve \[-x - 2y = -10 \] for \(x\) which takes two steps
anonymous
  • anonymous
add \(2y\) to both sides then change the sign of each term
anonymous
  • anonymous
\[-x-2y=10\\ -x=2y-10\\ x=-2y+10\] in other words
anonymous
  • anonymous
so B
anonymous
  • anonymous
okay now how about the second one
anonymous
  • anonymous
\[3x - 2y = 6 \\6x - 4y = 12 \] if you multiply the first equation all the way across by 2, you get the second equation exactly
anonymous
  • anonymous
that means they are the same line so "infinitely many solutions"
anonymous
  • anonymous
Your the best omg how about the thrid one
johnweldon1993
  • johnweldon1993
Price of a shirt is $9, and price of a cap is $2. Price of a shirt is $10, and price of a cap is $1. Price of a shirt is $8, and price of a cap is $3. Price of a shirt is $7, and price of a cap is $4. Let shirt = s and cap = c \[\large s + c = 11\] \[\large 2s + 3c = 25\] lets sub the first equation \(\large s = 11 - c\) into the second \[\large 2(11 -c) + 3c = 25\] \[\large 22 - 2c + 3c = 25\] \[\large 22 + c = 25\] \[\large c = 3\] The price of a cap is 3 Meaning the shirt is 8
anonymous
  • anonymous
Great the next one?
imqwerty
  • imqwerty
LOL the guy with ss 100 helped u don't u feel great haha :D
anonymous
  • anonymous
what
imqwerty
  • imqwerty
Satellite is the only guy in the whole openstudy who has smart score of 100 he is at the top :D

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