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Drupady [299]
3 years ago
12

Frank needs to make a 420 mile trip in 7 hours. Write and solve an equation to determine what speed he should average.

Mathematics
1 answer:
salantis [7]3 years ago
4 0
420\7=60
The answer is 60
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Last Friday temp at $30 over the weekend he received some money for doing his chores he now has $42 write an equation that repre
JulsSmile [24]
30+x=42 I think because it's has to equal 42 and he already has 30
6 0
3 years ago
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Solve the following system of equations for all three variables.
nignag [31]
  5x - 2y + 1z = 8 ⇒   5x - 2y + 1z = 8
-9x + 2y + 2z = 5 ⇒ -9x + 2y + 2z = 5
-9x -  2y -  5z = 4             -4x + 3z = 13

 5x -  2y + 1z = 8
-9x + 2y + 2z = 5 ⇒ -9x + 2y + 2z = 5
-9z -  2y -  5z = 4 ⇒ -9x -  2y -  5z = 4
                                        -18x - 3z = 9

     -4x + 3z = 13
    -18x - 3z =   9
           -22x = 22
            -22    -22
                x = -1
    -18x - 3z = 9
-18(-1) - 3z = 9
       18 - 3z = 9
     - 18       - 18
             -3z = -9
              -3     -3
                z = 3

    5x - 2y + z = 8
5(-1) - 2y + 3 = 8
     -5 - 2y + 3 = 8
     -2y - 5 + 3 = 8
           -2y - 2 = 8
                + 2 + 2
                -2y = 10
                 -2     -2
                   y = -5
          (x, y, z) = (-1, -5, 3)
6 0
3 years ago
The x-intercept has a y coordinate of 0.<br><br><br> True<br> False
Ghella [55]
False, its the other way around.
The y-intercept has an x coordinate of 0.
So, false.

5 0
3 years ago
301,251,769 to the nearest ten thousand
Levart [38]

Answer:

301,250,000

I'm pretty sure that's it.

3 0
3 years ago
Read 2 more answers
motel clerk counts his $1 and $10 bills at the end of a day. He finds that he has a total of 57 bills having a combined monetary
madreJ [45]
You can use a matrix equation to discover that the motel clerk has 45 $1 bills and 12 $10 bills.
4 0
3 years ago
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