2 years ago

After you prove that two triangles are congruent, what would CPCTC be useful for?

Mathematics

1 answer:

Lapatulllka [165]2 years ago

6 0

Is useful in provingvarious theorems about triangles and other polygons.

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If (-5x^5) (a) = 25x^7 + 100x^5, find a

sweet-ann [11.9K]

(-5x^5)(a) = 25x^7 + 100x^5
+5x^5 +5x^5
a = 25x^7

4 0

2 years ago

Number 8 please can you write and equation

tigry1 [53]

8.5x + 55 = 123

You would use the formula: mx + b = y

The slope is the amount of money each day(mx),and the y-intercept would be the fee(b) and the total cost would be y.

3 0

2 years ago

A line passes through the origin and the point (3,5). What is the slope of the line?

masha68 [24]

$\bf \begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
% (a,b)
&({{ 0}}\quad ,&{{ 0}})\quad 
% (c,d)
&({{ 3}}\quad ,&{{ 5}})
\end{array}
\\\\\\
% slope = m
slope = {{ m}}= \cfrac{rise}{run} \implies 
\cfrac{{{ y_2}}-{{ y_1}}}{{{ x_2}}-{{ x_1}}}\implies \cfrac{5-0}{3-0}$