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ruslelena [56]
3 years ago
10

If x=-7 and y=3x+2, then y equals what number?

Mathematics
2 answers:
LenKa [72]3 years ago
4 0

Answer:

-19

Step-by-step explanation:

y = -19

kati45 [8]3 years ago
3 0

Answer:

y =  -19

Step-by-step explanation:

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Write the equation of a line that is parallel to {x=8}x=8x, equals, 8 and that passes through the point {(-3,-2)}(−3,−2)left par
Alexxandr [17]

Answer:

  x = -3

Step-by-step explanation:

The line parallel to x=8 is another vertical line:

  x = constant

To make it go through a point with an x-coordinate of -3, the constant must be -3.

Your line is ...

  x = -3

5 0
3 years ago
I don't understand the substitution method?
liq [111]
It depends on what variable you are tying to solve for first. Say you are trying to solve for x first and then y on the first problem you wrote.

In substitution you solve one of the equations for example with
6x+2y=-10
2x+2y=-10
you solve 2x+2y=-10 for x

2x+2y=-10
-2y = -2y (what you do to one side of the = you do to the other)
2x=-10-2y (to get the variable by its self you divide the # and the variable)
/2=/2 (-10/2=-5 and -2y/2= -y or -1y, they are the same either way)
x=-5-y

now you put that in your original equation that you didn't solve for:
6(-5-y)+2y=-10 solve for that
-30-6y+2y=-10 combine like terms
-30-4y=-10 get the y alone and to do this you first get the -30 away from it
+30=+30
-4y=20 divide the -4 from each side
/-4=/-4 (20/-4=-5)
y=-5

now the equation you previously solved for x can be solved for y.
x=-5-y
x=-5-(-5) a minus parenthesis negative -(- gives you a positive
-5+5=0
x=0

and now we have solved the problem. x=0 and y=-5

6 0
3 years ago
In ΔPQR, what is sin Q written as a decimal?
UNO [17]
Sin Q = oppo. / hypo
sin Q = 9/15
sin Q = 0.6
8 0
3 years ago
Read 2 more answers
M + 4n = 9 <br> Answersssssssssssssss
pantera1 [17]

Answer:

Slope=− 2.0000.500=−0.250

m−intercept= 1/9 =9.00000

n−intercept= 4/9 =2.25000

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Need help with image below
Ann [662]

Step-by-step explanation:

please provide formula

7 0
3 years ago
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