Need help!!!!!!!!!!!!!!

Mathematics

1 answer:

lisov135 [29]3 years ago

6 0

It is the last answer that is the correct one

You might be interested in

What is the slope of the line that passes through the points (-2, -3), and (5, 4)?

Karolina [17]

$\bf \begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
% (a,b)
&({{ -2}}\quad ,&{{ -3}})\quad 
% (c,d)
&({{ 5}}\quad ,&{{ 4}})
\end{array}
\\\quad \\\\ % slope = m
slope = {{ m}}= \cfrac{rise}{run} \implies 
\cfrac{{{ y_2}}-{{ y_1}}}{{{ x_2}}-{{ x_1}}}\implies \cfrac{4-(-3)}{5-(-2)}\implies \cfrac{4+3}{5+2}$

6 0

3 years ago

Read 2 more answers

An investment services company experienced dramatic growth in the last two decades. The following models for the company's reven

zlopas [31]

Answer: a) 138.32 and b) 35 years approx.

Step-by-step explanation:

Since we have given that

$R(t)=21.4e^{0.13t}\\\\C(t)=18.6e^{0.13t}$

So, Profit is given by

$Profit=R(t)-C(t)\\\\Profit=21.4e^{0.13t}-18.6e^{0.13t}\\\\Profit=e^{0.13t}(21.4-18.6)\\\\Profit=2.8e^{0.13t}$

Difference in years of 1990 and 2020=30

So, Profit becomes :

$P(30)=2.8e^{0.13\times 30}\\\\P(30)=2.8\times 49.40\\\\P(30)=138.32$

(b) How long before the profit found in part (a) is predicted to double? (Round your answer to the nearest whole number.) years after 1990.

So, profit doubles , we get :

$138.32\times 2=2.8e^{0.13t}\\\\276.65=2.8e^{0.13t}\\\\\dfrac{276.65}{2.8}=e^{0.13t}\\\\98.80=e^[0.13t}\\\\\ln 98.80=0.13t\\\\4.593=0.13t\\\\\dfrac{4..593}{0.13}=t\\\\35.33=t$

Hence, a) 138.32 and b) 35 years approx.

6 0

3 years ago

Quick please it’s for a test today

RUDIKE [14]

Answer:

A) 18/3 or 6 bracelets

Step-by-step explanation:

If it take 3/2 hours to make 1 bracelet, then it will take 9 hours to make 9/(3/2) bracelets. This means that the number of bracelets Jasmine can make in 9 hours following this proportional relationship is 18/3 or 6 bracelets.

6 0

3 years ago

Will give brainliest

jeyben [28]

Answer:

Step-by-step explanation:

Given, 

Dimensions of the rectangular prism = 9ft, 12ft and 4ft

Therefore, 

Surface area of the rectangular prism

= 2( lb + bh + lh)

$= 2(12 \times 9 + 9 \times 4 + 12 \times 4) {ft}^{2}$