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Triss [41]
2 years ago
8

Q5. Solve for x and y using elimination method.10x +3y = 75, 6x - 5y = 11​

Mathematics
1 answer:
sleet_krkn [62]2 years ago
8 0

Answer:

16x - 2y = 86

Step-by-step explanation:

10x + 3y = 75

+ 6x - 5y = 11

=

16x -2y =86

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twenty students in A and 20 students in class B were asked how many hours they took to prepare for an exam.The data sets represe
SSSSS [86.1K]

Answer:

is there a graph i can read?

Step-by-step explanation:

6 0
2 years ago
Hi, can someone please help, and possibly explain the answer please.
mr_godi [17]

Answer:

x=\frac{-(-2)\±\sqrt{(-2)^2-4(3)(0)} }{2(3)}

Step-by-step explanation:

Quadratic formula: x=\frac{-b\±\sqrt{b^2-4ac} }{2a} when the equation is 0=ax^2+bx+c

The given equation is 1=-2x+3x^2+1. Let's first arrange this so its format looks like y=ax^2+bx+c:

1=-2x+3x^2+1

1=3x^2-2x+1

Subtract 1 from both sides of the equation

1-1=3x^2-2x+1-1\\0=3x^2-2x+0

Now, we can easily identify 3 as a, -2 as b and 0 as c. Plug these into the quadratic formula:

x=\frac{-b\±\sqrt{b^2-4ac} }{2a}\\x=\frac{-(-2)\±\sqrt{(-2)^2-4(3)(0)} }{2(3)}

I hope this helps!  

8 0
2 years ago
What’s the answer to this?
nexus9112 [7]

the answer is 5.10729613...

4 0
3 years ago
Read 2 more answers
If it takes 5 sewing machines 5 minutes to make 5 shirts, how long will it take for 100 sewing machines to make 100 shirts?
alekssr [168]
SOLUTION:

If it takes 5 sewing machines 5 minutes to make 5 shirts, then that means:

100 machines will make 100 shirts in 5 minutes as well.

Hope this helps! :)
Have a lovely day! <3
3 0
2 years ago
-8 times the quantity 4 decreased by w
telo118 [61]
If this is what I'm thinking then the answer would be
W-4(-8) or simplified when you combine like terms
W+32
The variable always goes in the front of the expression and -4 times -8 would give you positive 32. (Negative times negative always gives you a positive outcome)
6 0
3 years ago
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