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4 years ago

Help plz i need help

Mathematics

1 answer:

Natalija [7]4 years ago

4 0

Answer:

108 in²

Step-by-step explanation:

Spliting the hexagon into 2 rectangles

The area of the bottom rectangle is 6*16=96

the area of the top rectangle is 2*6=12

12+96=108 in²

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An equilateral triangle has an altitude length of 36 feet. Determine the length of a side of the triangle.

liq [111]

$\bf \textit{height of an equilateral triangle}\\\\
h=\cfrac{s\sqrt{3}}{2}\quad 
\begin{cases}
s=\textit{length of a side}\\
---------\\
h=36
\end{cases}\implies 36=\cfrac{s\sqrt{3}}{2}
\\\\\\
72=s\sqrt{3}\implies \cfrac{72}{\sqrt{3}}=s~~\stackrel{rationalizing~it}{\implies }~~\cfrac{72}{\sqrt{3}}\cdot \cfrac{\sqrt{3}}{\sqrt{3}}\implies \cfrac{7\sqrt{3}}{3}$

3 0

3 years ago

Please help I don't know the median give an answer and explanation

morpeh [17]

Answer:

Median is the middle of the data set. For example this data set is 4, 6, 7, 9, 10. First you take out 4 and 10. The you take out 6 and 9 to get a median of 7. But if there is an even amount of numbers like in this data set, 1, 2, 4, 5. Then you take out 1 and 5 and then find the middle point in between 2 and 4 which is 3.

5 0

2 years ago

How to do this question plz answer my question

Degger [83]

Answer:

$121.82

Step-by-step explanation:

Okay, this is kind of complex, so let's go step by step.

First, we want to find the area of the rectangular lawn - we can do this by multiplying the length and width. The length is 100 and the width is 45 so $45\cdot100=4500$ m² is the area of the rectangle.

However, there are 3 ponds in which the grass seeds will not be going - so we need to find the area of all 3 of these circles and subtract it from 4500 (our rectangle area).

The area of a circle is represented by the formula $\pi r^2$

The diameters are given here, which is double the radius, so to find the radius of each circle let's divide the diameters by 2.

First circle's radius: $20\div2=10$

Second circle's radius: $10\div2=5$

Third circle's radius: $5\div2=2.5$

Now let's find the area of each circle.

First Circle: $\pi \cdot10^2 = \pi\cdot100=3.14\cdot100=314$

Second Circle: $\pi\cdot5^2 = \pi \cdot25 = 3.14\cdot25=78.5$

Third Circle: $\pi \cdot 2.5^2 = \pi \cdot6.25 = 3.14\cdot6.25=19.625$

Adding all of these values gets us 412.125.

Now we can subtract from this from 4500 to get us 4087.875

If the grass seeds that cost £1.49 cover 50m² each, then we need $4087.875\div50=81.7575$ bags.

Each bag costs £1.49, so the total cost is $81.7575\cdot1.49\approx121.82$

Hope this helped!!

5 0

3 years ago

Volume equation3 1/4 inch high, 6 1/2 inch long, 2 inch wide

Komok [63]

If this is for a rectangle the volume of it would be 39/2 or 19 1/2

8 0

3 years ago

two buses leave Houston at the same time and travel in opposite directions. one bus averages 55 mi/h and the other bus averages

Alenkasestr [34]

4 hours after they leave Houston. Easiest way to solve this problem is to first calculate the relative velocities of the two buses. Since they're traveling in opposite directions, you simply need to add their respective velocities to see what the relative velocity is between them. 55 mi/h + 45 mi/h = 100 mi/h That means that the buses will increase their distance apart from each other by 100 miles for every hour that they travel. So divide 400 miles by 100 miles/hour 400 miles / 100 miles/hour = 4 hours. So 4 hours after the buses start moving, they will be 400 miles apart from each other.

4 0

3 years ago