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iren [92.7K]
2 years ago
13

Simplify the following expression:

Mathematics
2 answers:
elena-s [515]2 years ago
6 0

Answer:

3x^2-15y-10x

Step-by-step explanation:

2x-12x-8y+7y+3x^2

-10x-15y+3x^2

3x^2-15y-10x

Brilliant_brown [7]2 years ago
6 0

Answer:

Step-by-step explanation:

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What is the constant speed of freddy and sam?
dlinn [17]
The constant speed, or "average rate of change" is their slope.

so  hmmm looking at Fred's graph, let's pick two points on the line, say 0,0 the origin and 8,2

\bf \begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
%   (a,b)
&({{ 0}}\quad ,&{{ 0}})\quad 
%   (c,d)
&({{8}}\quad ,&{{ 2}})
\end{array}
\\\\\\
% slope  = m
slope = {{ m}}= \cfrac{rise}{run} \implies 
\cfrac{{{ y_2}}-{{ y_1}}}{{{ x_2}}-{{ x_1}}}\implies \cfrac{2-0}{8-0}\implies \cfrac{2}{8}\implies \cfrac{1}{4}

now, for Sam, let's use the last two points in the table then,

\bf \begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
%   (a,b)
&({{ 20}}\quad ,&{{ 2\frac{1}{2}}})\quad 
%   (c,d)
&({{32}}\quad ,&{{ 4}})
\end{array}
\\\\\\
% slope  = m
slope = {{ m}}= \cfrac{rise}{run} \implies 
\cfrac{{{ y_2}}-{{ y_1}}}{{{ x_2}}-{{ x_1}}}\implies \cfrac{4-2\frac{1}{2}}{32-20}\implies \cfrac{4-\frac{5}{2}}{32-20}
\\\\\\
\cfrac{\quad \frac{8-5}{2}\quad }{12}\implies \cfrac{\quad \frac{3}{2}\quad }{\frac{12}{1}}\implies \cfrac{3}{2}\cdot \cfrac{1}{12}\implies \cfrac{1}{8}
6 0
3 years ago
Read 2 more answers
What is 4,124.307 rounded to the nearest hundredth?
Mama L [17]

The next larger hundredth is  xxxx.31 .

The next smaller hundredth is  xxxx.30 .

xxxx.307  is nearer to  xxxx.31  than it is to  xxxx.30 .

So  4,124.31  is the nearest hundredth.
 
4 0
2 years ago
Read 2 more answers
Ten less than a number is three more than six times the number. Let n represent the number and translate each phase or sentence.
Aleksandr-060686 [28]

Required number is \frac{-13}{5} and required expression is n – 10 = 6n + 3

<h3><u>Solution:</u></h3>

Given that  

Ten less than a number is three more than six times the number.

Number is represented by variable "n"

Need to determine equation and the number.

Ten less than number means subtracting 10 from the number  

As number is n so ten less than number = n – 10   ------(1)

Six times the number = number multiplied by 6 = 6n  

So three more than Six times the number = 6n + 3 --------(2)

As ten less than number is equal to  3 more than six times the number  

=> n – 10  = 6n + 3

Solving the above expression for n we get

-10-3 = 6n – n

=> 5n = -13

\Rightarrow \mathrm{n}=-\frac{13}{5}

Hence required number is -\frac{13}{5} and required expression is n – 10  = 6n + 3

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3 years ago
#17 only plz points and Brainlyness to anyone who answers first <br> Hurry
Marizza181 [45]

Answer:

a) 0.001 meters

b) 1 millimeter because 1 mm = 0.001 meters as well

Step-by-step explanation:

7 0
3 years ago
Heheh ik im annoying but plssss im trying to graduate hs
zlopas [31]

Answer:

It's the 2nd one : -30a^{5}b + 12a^{4} b^{3} + 16a^{3} b^{2} - 4a^{2} b^{4} - 2ab^{3}

4 0
2 years ago
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