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VikaD [51]
3 years ago
9

What is -4/9 x -5/8 this is for math

Mathematics
2 answers:
SIZIF [17.4K]3 years ago
5 0
0.2778 this is the answer for your question
Whitepunk [10]3 years ago
5 0
\frac{-4}{9} * \frac{-5}{8}\\
The negatives cancel out;
\frac{20}{72} \\
\frac{5}{18} \ or \ .277778...
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What is another way to write the expression ​ t⋅(14−5) ​? (t⋅14)⋅5 t⋅14−5 (t⋅14)−5 (t⋅14)−(t⋅5)
Finger [1]
Another way to write the expression the answer is this (t.14)-(t.5)
5 0
3 years ago
Read 2 more answers
the line joining A(a, 3) to B(2 -3) is perpendicular to the line joining C(10,1) to B. The value of a is?
RideAnS [48]
Well, first off, let's find what is the slope of BC

\bf \begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
%   (a,b)
B&({{ 2}}\quad ,&{{ -3}})\quad 
%   (c,d)
C&({{ 10}}\quad ,&{{ 1}})
\end{array}
\\\\\\
% slope  = m
slope = {{ m}}= \cfrac{rise}{run} \implies 
\cfrac{{{ y_2}}-{{ y_1}}}{{{ x_2}}-{{ x_1}}}\implies \cfrac{1-(-3)}{10-2}\implies \cfrac{1+3}{10-2}
\\\\\\
\cfrac{4}{8}\implies \cfrac{1}{2}

now, a line perpendicular to that one, will have a negative reciprocal slope, thus

\bf \textit{perpendicular, negative-reciprocal slope for slope}\quad \cfrac{1}{2}\\\\
slope=\cfrac{1}{{{ 2}}}\qquad negative\implies  -\cfrac{1}{{{ 2}}}\qquad reciprocal\implies - \cfrac{{{ 2}}}{1}\implies \boxed{-2}

now, we know the slope "m" of AB is -2 then, thus

\bf \begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
%   (a,b)
A&({{ a}}\quad ,&{{ 3}})\quad 
%   (c,d)
B&({{ 2}}\quad ,&{{ -3}})
\end{array}
\\\\\\
% slope  = m
slope = {{ m}}= \cfrac{rise}{run} \implies 
\cfrac{{{ y_2}}-{{ y_1}}}{{{ x_2}}-{{ x_1}}}\implies \cfrac{-3-3}{2-a}=\boxed{-2}
\\\\\\
\cfrac{-6}{2-a}=-2\implies -6=-4+2a\implies -2=2a\implies \cfrac{-2}{2}=a
\\\\\\
-1=a
6 0
3 years ago
Factor out the coefficient of the variable term The expression 1/10k-7/10 factored is
Goshia [24]

Answer:

The answer: 1/10x (k-7)

Step-by-step explanation:

6 0
3 years ago
Will give Brainliest if you get it right
fenix001 [56]

Answer:

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Step-by-step explanation:

The distance between two points is sqrt((difference between y-values)^2 + (difference between x-values)^2) -->

sqrt(8^2 + 7^2) =

sqrt(64 + 49) =

sqrt( 113) =

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5 0
3 years ago
Can someone help me with this please
Yuri [45]

Answer:

ofc ill help! x=-35

Step-by-step explanation:

4 0
3 years ago
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