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Citrus2011 [14]
2 years ago
13

Will mark brainliest pls help

Mathematics
2 answers:
Rainbow [258]2 years ago
5 0

Answer:

18

Step-by-step explanation:

Add all the sides. But you are missing two sides. Soo since the top is 4, the bottom is two bc half is two. then the right side is 5 and the left, half is 2 so the other half is 3. 3+2=5! soooo the perimeter is 18.

dalvyx [7]2 years ago
3 0

Answer:

18

Step-by-step explanation:

We add up the side lengths,

5+4+3+2+2+2= 18

by finding missing side lengths with subtraction and logic

and I'm pretty sure this is correct, but I like double-checking things.

This figure is made out of 2 rectangles,

2x5 and 3x2

The perimeter of each is 14 and 10

14+10-3-3=18

the two 3's are the over lapping sides

We also get 18.

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Natalie is buying potatoes at the grocery store. If she buys 6 potatoes that each have a mass of 375 grams, what is the total ma
Natali [406]
Mass of one potato = 375 g
Mass of 6 potatoes = 375*6
                               =  2250 g
2.25 Kg
5 0
3 years ago
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If you have 30 students in your class and you want to know how many groups of 5 people you could make.
valentina_108 [34]

Answer:

Well, it is complicated because I've never studied that in math. I searched up the definitions of both in math and they're very similar. Permutation is a one of many possible variations and can change. A combination is the process of joining to things to be one. So if I had to choose I think I'd go with permutation since it isn't asking you to list all the ways you can make groups out of the number 30.

Step-by-step explanation:

7 0
3 years ago
Find the general term of {a_n}
Assoli18 [71]

From the given recurrence, it follows that

a_{n+1} = 2a_n + 1 \\\\ a_{n+1} = 2(2a_{n-1} + 1) = 2^2a_{n-1} + 1 + 2 \\\\ a_{n+1} = 2^2(2a_{n-2}+1) + 1 + 2 = 2^3a_{n-2} + 1 + 2 + 2^2 \\\\ a_{n+1} = 2^3(2a_{n-3} + 1) + 1 + 2 + 2^2 = 2^4a_{n-3} + 1 + 2 + 2^2 + 2^3

and so on down to the first term,

a_{n+1} = 2^na_1 + \displaystyle \sum_{k=0}^{n-1}2^k

(Notice how the exponent on the 2 and the subscript of <em>a</em> in the first term add up to <em>n</em> + 1.)

Denote the remaining sum by <em>S</em> ; then

S = 1 + 2 + 2^2 + \cdots + 2^{n-1}

Multiply both sides by 2 :

2S = 2 + 2^2 + 2^3 + \cdots + 2^n

Subtract 2<em>S</em> from <em>S</em> to get

S - 2S = 1 - 2^n \implies S = 2^n - 1

So, we end up with

a_{n+1} = 4\cdot2^n + S \\\\ a_{n+1} = 2^2\cdot2^n + 2^n-1 \\\\ a_{n+1} = 2^{n+2} + 2^n - 1 \\\\\implies \boxed{a_n = 2^{n+1} + 2^{n-1} - 1}

5 0
2 years ago
PLEASE HELP WILL MARK BRAINLIEST!
pav-90 [236]

Answer:

1, 5, 17, 53, 161

Step-by-step explanation:

Given:

  • a_1=1
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First five terms of the sequence:

a_1=1

a_2=3a_1+2=3(1)+2=5

a_3=3a_2+2=3(5)+2=17

a_4=3a_3+2=3(17)+2=53

a_5=3a_4+2=3(53)+2=161

7 0
2 years ago
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brilliants [131]

Answer:

he got 40

Step-by-step explanation:

10/0.25

7 0
3 years ago
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