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Elodia [21]
3 years ago
7

Sierra's karate class lasts 56 day. How many weeks does the class last?​

Mathematics
1 answer:
d1i1m1o1n [39]3 years ago
5 0

Answer:

8 weeks.

Step-by-step explanation:

There are 7 days in a week so the answer is 56/7 = 8 weeks.

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timurjin [86]

Answer:

2

Step-by-step explanation:

\frac{y1 - y2}{x1 - x2}  \\  \frac{2 - 6}{ - 5 - ( - 3)}  \\  \frac{ - 4}{ - 5 + 3}  \\  \frac{ - 4}{ - 2}  \\  = 2

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Use the quadratic formula to find the roots: -3x^2 + 27x = 42​
ch4aika [34]

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x=2,x=7

Step-by-step explanation:

-3x^2+27x=42

x^2-9x+14=0

x^2-2x-7x+14=0

x*(xi2)-7(x-2)=0

(x-2)*(x-7)=0

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How do I know when to add or subtract when solving translations problem
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Step-by-step explanation:

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4 years ago
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Solve each system using elimination.<br> − 5 = −10 <br> − + = 6
Maksim231197 [3]

The values of (x, y) are (-5, 1), if the equations x-5y=-10 and -x+y=6 are solved by elimination method.

Step-by-step explanation:

The given is,

                      x-5y=-10................................(1)

                    -x+y=6.....................................(2)

Step:1

           Equation (2) is multiplied by -1 ( Eqn (2) × -1 )

                      x-y=-6..................................(3)

Step:2

         Substrate the equation (1) and equation (3),

                                      x-5y=-10

                                        x-y=-6

          ( - )

         After the Subtraction equation becomes,

                   (x-x)+(-5y+y)=(-10+6)

                                (0)+(-4y)=(-4)

                                            -4y=-4

                                                 y=1

Step:3

           By using y value find value of x,

                                  x-5y=-10

                             x-(5)(1)=-10

                                           x=-10+5

                                           x=-5

Step:4

           Check for solution,

                                  -x+y=6

                              -(-5)+1=6

                                             6=6

           Both sides are equal so answer is corrected

Result:

         The values of (x, y) are (-5, 1), if the equations x-5y=-10 and -x+y=6 are solved by elimination method.

5 0
3 years ago
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