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zmey [24]
2 years ago
6

Solve the system of equations.

Mathematics
1 answer:
vovangra [49]2 years ago
3 0

Answer:

y=-2x-5

Step-by-step explanation:

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What are the slope and the y-intercept of the linear function that is represented by the graph?
stiv31 [10]

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uhh the slope is 2/3 but the y-intercepy is -2

Step-by-step explanation:

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To test the effectiveness of a business school preparation course, 8 students took a general business test before and after the
Lisa [10]

Solution :

Group   Before     After

Mean    693.75    743.75

Sd         155.37     143.92

SEM        54.93     50.88

n              8            8

Null hypothesis : The preparation course not effective.

$H_0: \mu_d = 0$

Alternative hypothesis : The preparation course is effective in improving the exam scores.

$H_a : \mu_d>0$  (after -  before)

4 0
3 years ago
Rewrite equation -qx+p=r
hodyreva [135]

Answer:-qx+p=r

Step-by-step explanation:

8 0
3 years ago
Even would be helpful if you just gave me the equation to solve it and I can do the rest. mart had a sale for labor day on DVD's
erastova [34]

x - price of a video tape

y - price of a DVD

\left\{\begin{array}{ccc}2x+3y=134\\x+5y=179&|\text{subtract 5y from both sides}\end{array}\right\\\\\left\{\begin{array}{ccc}2x+3y=134\\x=179-5y&|\text{substitute to the first equation}\end{array}\right\\\\2(179-5y)+3y=134\qquad\text{use distributive property}\\\\(2)(179)+(2)(-5y)+3y=134\\\\358-10y+3y=134\qquad\text{subtract 358 from both sides}\\\\-7y=-224\qquad\text{divide both sides by (-7)}\\\\\boxed{y=32}\\\\\text{Put the value of y to the second equation}\\\\x=179-5(32)\\\\x=179-160\\\\\boxed{x=19}

<h3>Answer: video tape cost $19 and DVD cost $32.</h3>
6 0
3 years ago
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