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LenKa [72]
3 years ago
10

17.6 degrees F 35.2 degrees F 41.0 degrees F 72.2 degrees F

Mathematics
1 answer:
yaroslaw [1]3 years ago
6 0
17.6 degrees I think
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Solve 9x-7y=-7 i don't know how to do it so could you show me step by step please
Lesechka [4]

First of all, you need to know what a 'solution' is, so you'll know it
when you see it.

A 'solution' to an equation is a number, or a set of numbers, that
you can write in place of the variables (the letters), and when you
do that, the equation will have only numbers in it, and it'll be a true
statement.

Your equation has two variables in it ... 'x' and 'y' .  In order to find
just a single set of numbers for what both of them must be, you
would need two equations.

The way it stands now, with only one equation, there are actually
an infinite number of solutions.  Each solution is a pair of numbers ...
one for 'x' and one for 'y' ... and if you write them into the equation
in place of 'x' and 'y', then the equation is a true statement. 
I'll show you how to tell if a pair of numbers is a solution or not.

Here's what that looks like:

Say I give you two pairs of numbers, and I tell you that both of them
are solutions to your equation.  The 'solutions' I give you are

          x=0
          y=1
and
          x=2
          y=3 .

You don't trust me, and you say to me "Wait just a minute there, dude ! 
Not so fast.  I'll need to check them out and see if those are really solutions
to my equation."

You take the first pair and write it into your equation:
x=1, y=0
                                   9x  -  7y  = -7
                                  9(0) - 7(1) = -7
                                   0    -  7   = -7
                                           -7   = -7
OK.  That's a true statement.
So x=0, y=1 is a solution.

Now check the other one I gave you:
x=2, y=3
                                   9x  -  7y  = -7
                                  9(2) - 7(3) = -7
                                   18  -  21  = -7
                                        -3      = -7
This is NOT a true statement.
So  x=2, y=3 is NOT a solution to your equation.
I pulled a fast one on you.  If I was charging you money for solutions,
then you would not pay me for this one, because it's not a solution.

8 0
3 years ago
Find the difference: 7 7/8 - 3 1/4=?*
sveticcg [70]
4 5/8
4 1/8
20 1/2
4 3/8
0.25 or 16
6 0
3 years ago
. Micah has 294 songs stored in his phone, which is 70% of the songs that George has stored in his phone. How many songs are sto
Kitty [74]

420 songs are stored on his phone

4 0
2 years ago
Solve for x: 6(4x+5)=3(x+8)+3 round to nearest hundredth
Hitman42 [59]
Solve for x by simplifying both sides of the equation then isolating teh varible.
your answer = - 1/7
3 0
3 years ago
Please help 15 points dont answer if u dont know
Anuta_ua [19.1K]

Answer:

answer is 1000 9000 and 1!

Step-by-step explanation:

how it helped

7 0
3 years ago
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