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Lena [83]
1 year ago
12

17, 18, 22, 31, 47, ?

Mathematics
2 answers:
Sophie [7]1 year ago
8 0

Answer:

72

Step-by-step explanation:

17+1=18

18+4=22

22+9=31

31+16=47

LekaFEV [45]1 year ago
5 0
The next number would be 63
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Albert is looking up at a tree. he is 25 feet from the vase of tree. the line of sight to the top of the tree is 27 feet.
Studentka2010 [4]
I think 10 but make sure tho
6 0
2 years ago
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Twenty-one boys and eight girls go on a camping trip. In how many ways can a group of six be selected to gather firewood, given
lorasvet [3.4K]
(a)  there are 8C2  = 28 ways of picking 2 girls from 8
And there are  21C4  =  5985 ways of picking 4 boys

Required number of ways for 2g / 4b  = 28 * 5985 =  167,580 

(b) at least 2 girls means  combinations of 2g/4b , 3g,3b , 4g/2b , 5g 1b or 
6 girls.

2g/4b  = 167,580 ways
3g/3b =  8C3 * 21C3 =  56 * 1330 = 74,480
4g/2b =  8C4* 21C2  =   70 * 210 = 14,700 
5g 1b = 8C5* 21 =  56*21 = 1176
6 girls  = 8C6 = 28

adding these up we get the answer to (b) which is  257,964

6 0
3 years ago
What is the answer? Brainliest and 13 pointsssssss
vodomira [7]

Answer:

33

Step-by-step explanation:

2x^2 +3y

Let x =3 and y=5

2 *(3)^2 +3(5)

We do exponents first

2 * 9  + 3(5)

Then multiply

18+ 15

Add

33

5 0
3 years ago
Find the perimeter: a polygon with sides 2.1 cm, 2.1 cm, 1 cm, 3.3 cm, and 1 cm
Nostrana [21]

Hello!

P = 2,1cm + 2,1cm + 1cm + 3,3cm + 1cm => P = 4,2cm + 1cm + 3,3cm + 1cm => P = 5,2cm + 3,3cm + 1cm => P = 8,5cm + 1cm => P = 9,5cm

Answer: D. 9,5cm

Good luck! :)

7 0
3 years ago
Read 2 more answers
two angles are supplementary one angle measures 75% more than twice the measure of the other what are the measurement of the two
valkas [14]
Let's call the angles x and y. We know that supplementary angles must add to 180 degrees, so x+y=180.

Furthermore, we know that x is 75% more than 2y. We can write "75% more than" numerically as 1.75, so x = 1.75(2y).

We can simplify the second equation by multiplying 1.75 and 2 together to get x = 3.5y.

Now we can solve the system of equations by substitution by plugging 3.5y in for x in x+y=180.

(3.5y) + y = 180

Combine like terms.

4.5y = 180

Divide by 4.5

y = 40

Plug y = 40 in and solve for x.

x + 40 = 180

x = 140

The answer is 40 and 140. Hope this helps :)
3 0
3 years ago
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