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Sauron [17]
3 years ago
12

Answer this step by step 5x^2+3-y^2+3x-6x^2-5y-6+y^2+4

Mathematics
1 answer:
algol133 years ago
3 0

Answer:

Add the new equation to the equation we didn't use in step 1 in order to eliminate one of the variables. Step 3: Solve ... Systems of equations with elimination: 2x-y=14 & -6x+3y=-42 ... Systems of equations with elimination: 6x-6y=-24 & -5x-5y=-60 ... of 2) · Systems of equations number of solutions: y=3x+1 & 2y+4=

Step-by-step explanation:

hope dis helps!

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Line QR goes through points Q(0,1) and R(2,7). Which equation represents line QR ?
vodomira [7]
(0,1)(2,7)
slope(m) = (7-1) / (2-0) = 6/2 = 3

y = mx + b
slope(m) = 3
use either of ur points...(0,1)....x = 0 and y = 1
now sub and find b, the y int
1 = 3(0) + b
1 = b

so ur equation is : y = 3x + 1....or 3x - y = -1
6 0
4 years ago
If x percent of 80 is 12, then x percent of what number is 18? PLEASE HELP
Arlecino [84]

Answer:

120

Step-by-step explanation:

1. if x times 80 is 12.  you can divide 12 by 80 to get the percent.  That is 15 percent.

2. so now you have to find 15 percent of a number = 18. you can solve that by dividing 18 by .15.

3. that is 120

4 0
3 years ago
What is a coterminal angle for 130 degrees that’s in between 0 and 360 degrees.
Ymorist [56]

Answer:

it's already a coterminal angle. the goal is too get the degree into that range of 0-360.

For example, the degree 450 would be 90.

450-360 = 90

So, 130 is your answer

8 0
4 years ago
The cost per purse is $17 each to make, and she sells them for $35 each. This Saturday, she is renting a booth at a craft fair f
klasskru [66]

T = Total income

N = Number of purses

35N = the selling price of each purse

17N = Cost of each purse

T = 35*N - 17*N - 75

T = 18N - 75

If she wants here total income to be 350 dollars, it will take

T = 350 ; N = unknown.

350 = 18N - 75 Add 75 to both sides.

350 + 75 = 18N

425 = 18N

Rounded N = 24 <<<< Answer. The actually number is 23.611 but you can't sell 0.611 of a purse.

6 0
3 years ago
Help help help help pleaseeeee
NeX [460]

Answer:

h=13

P=5

b=12

Step-by-step explanation:

  1. tanA=<em>p</em><em>÷</em><em>b</em><em>=</em><em>5</em><em>÷</em><em>1</em><em>2</em>
  2. sin<em>A</em><em>=</em><em>p</em><em>÷</em><em>h</em><em>=</em><em>5</em><em>÷</em><em>1</em><em>3</em>
  3. <em>c</em><em>o</em><em>s</em><em>A</em><em>=</em><em>b</em><em>÷</em><em>h</em><em>=</em><em>1</em><em>2</em><em>÷</em><em>1</em><em>3</em>
4 0
3 years ago
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