Please help me please!!

Mathematics

1 answer:

STatiana [176]3 years ago

6 0

Answer:

For B I would say in the gift ship the curator could sell things that people of that age would find interesting and or sell things that there children and grand children might want

Step-by-step explanation:

I hope this helps a little, have a nice day :)

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A tourist calculated that if he walks to the railroad station with a speed of 4 mph, he’ll miss the train by half an hour, but i

Levart [38]

He has to cover 6 km in distance, good luck!

3 0

3 years ago

a tennis ball machine serves a ball vertically into the air from a height of 2 feet, with an inital speed of 120 feet per second

balu736 [363]

Check the picture below.

$\bf ~~~~~~\textit{initial velocity}\\\\
\begin{array}{llll}
~~~~~~\textit{in feet}\\\\
h(t) = -16t^2+v_ot+h_o \\\\
\end{array} 
\quad 
\begin{cases}
v_o=\stackrel{\textit{initial velocity of the object}}{120}\\\\
h_o=\stackrel{\textit{initial height of the object}}{2}\\\\
h=\stackrel{}{\textit{height of the object at "t" seconds}}
\end{cases}
\\\\\\
h(t)=-16t^2+120t+2$

$\bf \textit{ vertex of a vertical parabola, using coefficients}\\\\
\begin{array}{llll}
h(t)= &{{ -16}}t^2&{{ +120}}t&{{ +2}}\\
&\uparrow &\uparrow &\uparrow \\
&a&b&c
\end{array}\qquad 
\left(-\cfrac{{{ b}}}{2{{ a}}}\quad ,\quad {{ c}}-\cfrac{{{ b}}^2}{4{{ a}}}\right)
\\\\\\
\left(-\cfrac{120}{2(-16)}~~,~~2-\cfrac{120^2}{4(-16)} \right)\implies \left( \cfrac{15}{4}~~,~~2+\cfrac{14400}{32} \right)$

$\bf \left( \cfrac{15}{4}~~,~~2+450 \right)\implies \left( \stackrel{seconds}{3\frac{3}{4}}~~,~~\stackrel{feet}{452} \right)$

7 0

3 years ago

Can someone help me with this?

lubasha [3.4K]

With what? cannot see anything

6 0

3 years ago

3x+10y=13<br> 4(-2y+x)-9x=13

Alekssandra [29.7K]

For the first one your answer would be

The problem would stay the same because you can't combine like terms.

For the second one your answer would be

-8y-5x=13

7 0

4 years ago

A number is increased 20%.By what percent the new number is decreased so that the number restores the original value?

Molodets [167]

Answer:

You have to give the number by which the 20% is increased in order to cross multiply and divide by a hundred to find the missing % of the decrease. Otherwise, you would simply subtract 20% from 100%, which seems unlikely to be the answer. We need more information.

Step-by-step explanation:

4 0

3 years ago