3 years ago

Miguel buys textbook with a listed price of $81. Miguel uses

2 answers:

8 0

Answer:

Step-by-step explanation: First, multiply the $81 by the 10% (81 x .10 = 8.1). Next, use the answer from step one and subtract it from the $81 (81 - 8.1 = 72.90) . $72.90 will be your final answer.

zimovet [89]3 years ago

6 0

Answer: $72.90

Step-by-step explanation:

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3 years ago

Find the value of x so that the line passing through the points will have the given slope: (x,6) and (10,-3) with a slope of -3/

Lana71 [14]

$(x,6) \\
x_1=x \\
y_1=6 \\ \\
(10,-3) \\
x_2=10 \\ y_2=-3 \\ \\
\hbox{the slope: } m=\frac{y_2-y_1}{x_2-x_1}=\frac{-3-6}{10-x}=\frac{-9}{10-x} \\ \\
m=-\frac{3}{2} \\
\Downarrow \\
-\frac{3}{2}=\frac{-9}{10-x} \\
-\frac{3}{2}(10-x)=-9 \\
10-x=-9 \times (-\frac{2}{3}) \\
10-x=3 \times 2 \\
10-x=6 \\
-x=6-10 \\
-x=-4 \\
\boxed{x=4}$