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UNO [17]
3 years ago
11

NEEED HELPPPPPPPPPPPPPP ASAP WILL GIVE BRAINLIST!!

Mathematics
2 answers:
madam [21]3 years ago
8 0
Blue point➡️ Lowell➡️ Lexington
dimulka [17.4K]3 years ago
3 0

Answer:

24.8 km

Step-by-step explanation:

Bluepoint to Lowell is 6

Lowell to Lexington is 18.8

add together

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Use the formula C-2ar to find the radius, r, for a circle with a circumference of 125 centimeters. Round your answer to the
julsineya [31]

Option A

The radius of circle is 19.90 cm

<h3><u>Solution:</u></h3>

The formula for circumference of circle is given as:

C = 2 \pi r

Where,

"C" is the circumference of circle

"r" is the radius of circle

\pi is a constant equal to 3.14

Given that, circumference = 125 cm

To find: Radius of circle

<em><u>Substitute the given value of "C" = 125 in formula</u></em>

125 = 2 \times 3.14 \times r\\\\125 = 6.28 \times r\\\\r = \frac{125}{6.28}\\\\r = 19.90

Thus radius of circle is 19.90 cm

3 0
2 years ago
Show that if x,y,z and w are the first four terms of an arithmetic sequence, then x+w-y=z
devlian [24]
It would be 29 because of the c and the w y equal to z
6 0
3 years ago
Read 2 more answers
Please help me I've been stuck on this since the morning. I keep texting my friend to help me but she won't answer me she just l
yan [13]

Answer:

sounds like a relationship problem

Step-by-step explanation:

that cheating wont fix.

4 0
3 years ago
What is Permutations and Combinations?
marissa [1.9K]

Answer:

See below

Step-by-step explanation:

Permutation is to select an object then arrange it and it cares about the orders while Combination is about only selecting an object without caring the orders.

Permutation can be expressed in math as:

\displaystyle{_n P _r = \dfrac{n!}{(n-r)!} \ \ \ (n \geq r) }

where n is a number of total object and r is a number of selected object to arrange. Hence. n cannot be less than r.

Now let's see an example of permutation, suppose we have letter A, B and C. I'd like to know how many ways these words can be arranged:

Since there are 3 letters total and 3 selected letters to arrange then:

\displaystyle{_3 P _3 = \dfrac{3!}{(3-3)!}}\\\\\displaystyle{_3 P _3 = \dfrac{3 \times 2 \times 1}{0!}}\\\\\displaystyle{_3 P _3 = \dfrac{6}{1}}\\\\\displaystyle{_3 P _3 = 6}

Therefore, there are 6 ways to arrange the letters - we can also demonstrate visually:

ABC - 1

ACB - 2

BAC - 3

BCA - 4

CAB - 5

CBA - 6

Notice that if you do visually, you'll get the same answer as the calculation of permutation!

----

Combination can be expressed mathematically as:

\displaystyle{_n C _r = \dfrac{n!}{(n-r)!r!} = \dfrac{_n P _r}{r!} \ \ \ (n \geq r) }

The difference between permutation and combination is that you only find how many ways you can select object in combination. Therefore, no arrange and doesn't care about order, just ways to select.

Suppose we have same 3 letters: A, B and C. I want to find how many ways I can select these 3 letters:

Since there are 3 letters total and 3 selected letters:

\displaystyle{_3 C _3 = \dfrac{3!}{(3-3)!3!}}\\\\\displaystyle{_3 C _3 = \dfrac{3!}{0!3!}}\\\\\displaystyle{_3 C _3 = \dfrac{3!}{3!}}\\\\\displaystyle{_3 C _3 = 1}

Hence, there is only one way to select 3 letters. This makes sense because if you have 3 letters then you can only select 3 letters only one way.

5 0
2 years ago
How many 1/6s are in 1&amp;1/6
Amanda [17]

Answer:

7/6

It's 7/6 because 6/6 make up a whole which is the 1 in 1 1/6

then there is that left over 1/6 to make it 7/6

5 0
2 years ago
Read 2 more answers
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