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nirvana33 [79]
3 years ago
10

A marathon is 131/5 miles long.If 4 people divide up the distance equally,how many miles does each person need to run ​

Mathematics
2 answers:
irinina [24]3 years ago
7 0
They would run 6.55 miles because first you do 131 divided by 5 which equals 26.2 so then you would do 26.2 divided by 4 and that equals 6.55
Rus_ich [418]3 years ago
3 0

Answer:

6.55 miles

Step-by-step explanation:

131/5 is 131 divided by 5 which is 26.2 mile. Then divide that by 4 to get the equal distance that each runner runs.

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I can’t figure out the surface area. Someone please help !! :)
Ilia_Sergeevich [38]
<h3> Answer:</h3><h2>surface area is 227•1</h2><h2>volume is 321•7</h2>

Step-by-step explanation:

diameter is 8•5

radius is d/2

8•5/2

=4•25

surface area = 4πr^2

4×22/7×4•25×4•25

=1589•5/7

=227•1

Volume= 4/3πr^3

4/3×22/7×4•25×4•25×4•25

4/3×22/7×76•76

=321•7

Hope it helps

plz mark as brainliest

5 0
3 years ago
When the shape of a bst approaches that of a perfectly balanced binary tree, what is the worst case performance characteristic o
irga5000 [103]

The shape of a bst approaches that of a perfectly balanced binary tree, (log2n) is the time complexity for a balanced binary search tree in case of insertions and search.

In computing, binary bushes are mainly used for looking and sorting as they offer a way to save statistics hierarchically. a few common operations that may be conducted on binary trees encompass insertion, deletion, and traversal.

A binary tree has a special situation that each node could have a most of two youngsters. A binary tree has the benefits of each an ordered array and a linked listing as search is as brief as in a taken care of array and insertion or deletion operation are as fast as in related listing.

In pc science, a binary tree is a tree information shape in which every node has at maximum two youngsters, that are known as the left baby and the proper toddler.

Learn  more about binary trees here brainly.com/question/16644287

#SPJ4

7 0
2 years ago
Please help asap 25 pts
beks73 [17]
y=ax^2+bx+c\\\\\text{Axis of symmetry:}\ x=\dfrac{-b}{2a}


\text{We have:}\\\\y=4x^2+16x-18\\\\a=4;\ b=16;\ c=-18\\\\x=\dfrac{-16}{2\cdot4}=\dfrac{-16}{8}=-2

Answer: A.
6 0
3 years ago
The temperature of coffee served at a restaurant is normally distributed with an average temperature of 160 degrees Fahrenheit a
posledela

Answer:

The 20th percentile of coffee temperature is 155.4532 degrees Fahrenheit.  

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 160 degrees

Standard Deviation, σ = 5.4 degrees

We are given that the distribution of temperature of coffee is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

We have to find the value of x such that the probability is 0.2

P( X < x) = P( z < \displaystyle\frac{x - 160}{5.4})=0.2  

Calculation the value from standard normal z table, we have,  

\displaystyle\frac{x - 160}{5.4} = -0.842\\\\x = 155.4532  

Thus,

P_{20}=155.4532

The 20th percentile of coffee temperature is 155.4532 degrees Fahrenheit.

7 0
3 years ago
Find the simple interest of $2300 invested at 7.5%for 10years
san4es73 [151]

Use the formula I = Prt. Plug $2300 into P.

Plug 7.5% (decimal form is 0.075) into r.

Plug 10 into t.

Your simple interest after 10 years is $1725

6 0
3 years ago
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