This can be solved by solving the slope of the line. First let y be the rating of the test and x be the number of incorrect answers. Slope can be solved using the formula:

M = ( y2 – y1 ) / ( x2 – x1)

M = ( 90 – 98) / ( 5 -1 )

M = -2

<span>So the model has a negative slope</span>

7 0

4 years ago

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Rationalize the expression<br><br>√77/11√33

Sonbull [250]

Answer:

990

Step-by-step explanation:

99+88+77+66+55+44+33+22+11+11+22+33+44+55+66+77+88+99=990

5 0

3 years ago

Find the sides of a triangle if two of its sides are equal, the third side is 1 1/3 cm longer than the others, and its perimeter

denis-greek [22]

Answer:

Length oh two equal sides: 1 16/45 cm

Third side: 2 31/45 cm

Step-by-step explanation:

length of two equal sides is x

Perimeter = x + x + ( x + 1 1/3) = 3x + 1 1/3 = 5 2/5

3x = 5 2/5 - 1 1/3 = 27/5 - 4/3 = 61/15

x = 61/45 = 1 16/45

Third side = 61/45 + 4/3 = 121/45 = 2 31/45

5 0

4 years ago