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3 years ago

I need help with these 3 please help!

Mathematics

2 answers:

enot [183]3 years ago

4 0

21 for the second one

diamong [38]3 years ago

3 0

I am pretty sure R is -19 meters and N is -7 and A is 476 AD

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The table shows a company’s profit based on the number of pounds of food produced.

Bingel [31]

Answer:

$5,300

Step-by-step explanation:

Formulae used,

$a=\dfrac{(\sum x^2y\sum xx)-(\sum xy\sum xx^2)}{(\sum xx\sum x^2x^2)-({\sum xx^2)}^2}$

$b=\dfrac{(\sum xy\sum x^2x^2)-(\sum x^2y\sum xx^2)}{(\sum xx\sum x^2x^2)-({\sum xx^2)}^2}$

$c=\dfrac{\sum y}{n}-b\frac{\sum x}{n}-a\frac{\sum x^2}{n}$

Where,

$\sum xx=\sum x^2-\dfrac{(\sum x)^2}{n}$

$\sum xy=\sum xy-\dfrac{\sum x\sum y}{n}$

$\sum xx^2=\sum x^3-\dfrac{\sum x\sum x^2}{n}$

$\sum x^2y=\sum x^2y-\dfrac{\sum x^2\sum y}{n}$

$\sum x^2x^2=\sum x^4-\dfrac{(\sum x^2)^2}{n}$

Putting the values from the table, we get the best fit line as,

$y= -0.0817x^2 + 102.24x - 20421$

As we want to calculate the profit at 350 pounds, so putting x=350, we get

$y= -0.0817(350)^2 + 102.24(350) - 20421=\$5354.75$

5 0

3 years ago

Read 2 more answers

100 Points!!!!!!!!!

artcher [175]

Answer:

its u=(-2,1)

Step-by-step explanation:

8 0

3 years ago

35 POINTS HELP ASAP!!!

Allisa [31]

Answer: 3

Step-by-step explanation:

$3:1$

$\frac{3}{1}=3$

6 0

3 years ago

P= $790, t= 3, r=4% compounded continuously : Find A

Savatey [412]

$\bf ~~~~~~ \textit{Continuously Compounding Interest Earned Amount}\\\\
A=Pe^{rt}\qquad 
\begin{cases}
A=\textit{accumulated amount}\\
P=\textit{original amount deposited}\to& \$790\\
r=rate\to 4\%\to \frac{4}{100}\to &0.04\\
t=years\to &3
\end{cases}
\\\\\\
A=790e^{0.04\cdot 3}\implies A=790e^{0.12}$

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3 years ago

Simplify the expression (2i-5j)×(3i+4j)

Alex_Xolod [135]

Answer:

-6-7ji-20j^(2)

Step-by-step explanation:

3 0

3 years ago