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3 years ago

What are some steps you might take after coming to a solution? Check all

Mathematics

2 answers:

Aleonysh [2.5K]3 years ago

7 0

Answer:

A and D

Step-by-step explanation:

I guess it depends on what kind of math you're doing but in general I would say these two at least. No matter what kind of math you're doing you should always double check your answer and make sure it has the correct units with it.

Paraphin [41]3 years ago

5 0

Answer:

A and B and E

Step-by-step explanation:

because u always double check

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What is Perpendicular to 5x-3y=30 and passing through (-2,7)

alisha [4.7K]

$k:y=m_1x+b_1;\ l:y=m_2x+b_2\\\\k\ \perp\ l\iff m_1\cdot m_2=-1\\\\k\ ||\ l\iff m_1=m_2$

We have:

$k:5x-3y=30\ \ \ \ |-5x\\\\-3y=-5x+30\ \ \ \ |:(-3)\\\\y=\dfrac{5}{3}x-10\to m_1=\dfrac{5}{3}\\\\l:y=m_2x+b\\\\k\ \perp l\Rightarrow \dfrac{5}{3}m_2=-1\ \ \ \ |\cdot\dfrac{3}{5}\\\\m_2=-\dfrac{3}{5}$

$l:y=-\dfrac{3}{5}x+b$

The line l is passing through (-2, 7). Substitute the coordinates of the point to the equation of a line l:

$7=-\dfrac{3}{5}\cdot(-2)+b\\\\\dfrac{6}{5}+b=7\ \ \ \ |-\dfrac{6}{5}\\\\b=\dfrac{35}{5}-\dfrac{6}{5}\\\\b=\dfrac{29}{5}$

$l:y=-\dfrac{3}{5}x+\dfrac{29}{5}\ \ \ \ |\cdot5\\\\5y=-3x+29\ \ \ \ |+3x\\\\3x+5y=29$

<h2>Answer: 3x + 5y = 29</h2>

3 0

3 years ago

What is the value of A and B (5x + b)(5x - b) = ax^2 - 49

Ostrovityanka [42]

Answer:

a=25

b=7

Step-by-step explanation:

6 0

3 years ago

Given the formula K = LMN, what is the formula for M?

Andre45 [30]

To start off devide both sides by M i.e
K/M=LMN/M
-> K/M=LN
Then devide by K to remove it on the left , this will end you up with M=LN/K
So the answer is (c).
Hope this helps :).

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3 years ago

Find the first five terms of each geometric sequence described <br><br> A1=1 R=4

xenn [34]

$\bf n^{th}\textit{ term of a geometric sequence}
\\\\\\
a_n=a_1\cdot r^{n-1}\qquad 
\begin{cases}
r=\textit{common ratio}\\
a_1=\textit{first term}\\
-------\\
a_1=1\\
r=4
\end{cases}\\\\
-----------------------------\\\\
$

$\bf \begin{array}{ccllll}
term&value\\
\textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\\
1&a_1=1\\
2&a_2=a_1\cdot 4^{2-1}\\
3&a_3=a_1\cdot 4^{3-1}\\
4&a_4=a_1\cdot 4^{4-1}\\
5&a_5=a_1\cdot 4^{5-1}\\
\end{array}$

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3 years ago

Sold 12 rolls of wrapping paper and 21 ribbon for $143.25. Then 16 rolls of wrapping paper and 25 ribbon for $181.25. How much i

Flauer [41]

Answer:

4t3 g g v

Step-by-step explanation:

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3 years ago