25, 25, 20, 35, 40 hitunglah mean, median, modus
1. 25, 25, 20, 35, 40 hitunglah mean, median, modus
Jawaban:
mean : 145:5 = 9
median : 20,25,25,25,40 nilai tengah = 25
modus : 25 , karena ada dua 25 nya
2. TOLONG JAWAB YA1. The mean score for boys and girls respectively 5 and 7. If the class mean score was 6.2. Determine the ratio of the number of boys and girls in the class.2. The mean age of teachers and professors groups was 40 years. If the mean age of teachers group was 35 years, while the mean age of the professors group was 50 years. Determine the ratio of the number of teachers and professors.
[tex]1). \frac{5b + 7g}{b + g} =6.2 \\ 5b + 7g = 6.2(b + g) \\ 5b + 7g = 6.2b + 6.2g \\ 7g - 6.2g = 6.2b - 5b \\ 0.8g = 1.2b \\ 2g = 3b \\ \frac{2}{3} g = b \\ boys \div girls \\ 2 \div 3 \\ \\ 2). \frac{35t + 50p}{t + p} = 40 \\ 35t + 50p = 40(t + p) \\ 35t + 50p = 40t + 40p \\ 50p - 40p = 40t - 35t \\ 10p = 5t \\ \frac{10}{5}p = t \\ \frac{2}{1} p = t \\ teachers \div professors \\2 \div 1 [/tex]
3. mean dari 32 25 60 40 55 35 40 35 20 25 plissss jawabbb
Jawaban:
20 25 25 32 35 35 40 40 55 60
35+35:2 = 35
Jawaban:
20, 25,25,32,35,35,40,40,55,60
35+35= 70/2
=35
Detail:
Mapel:Matematika
Penjelasan dengan langkah-langkah:
Semoga bermanfaat
4. Pada data berikut ini : 20, 15, 25, 35, 25, 10, 30, 15, 20, 25. Nilai mean, median dan modus dari data tersebut adalah ….
Jawaban:
10=1
15=2
20=2
25=3
30=1
35=1
mean=
(10x1)+(15x2)+(20x2)+(25x3)+(30x1)+(35x1)
= 10+30+40+75+30+35= 220 : (1+2+2+3+1+1)
= 220 : 10 = 22
median =
jumlah frekuensi = 10:2 = 5
nilai yg ada difrekuensi 5 yaitu 20
modus = nilai yg sering muncul yaitu 25 sbnyak 3x muncul
5. I have a geometric series problem . please help me to solve it Problem: The third term of a geometric sequence is 3 and the sixth term is 1/9. Find the first term.
The 1st term is 27.
@wello1
☺
6. A geometric sequence has 9 terms. If the third term is 80 and the last term is 327680, find the common ratio of the geometric sequence.
[tex]u9 = u3 \times {r}^{6} \\ 327680 = 80 \times {r}^{6} \\ \frac{327680}{80} = {r}^{6} \\ {r}^{6} = 4096 \\ r = \sqrt[6]{4096} \\ r = 4[/tex]
7. What is the value of first term and common ratio of the geometric sequence if the third term is 96 and the fifth term is 1,536?
Jawaban:
cara dan jawabannya seperti di foto ya.
semangat belajar
semoga membantu
#terbaik5
8. mean dari data 20 15 25 35 25 10 30 15 20 25#pakai cara yaa tolongg:(
mean = 22
Penjelasan dengan langkah-langkah:
X bar = Zigma X : n
.
maka
mean = 20+15+25+35+25+10+30+15+20+25/10
mean = 220/10 = 22
Jawaban:
mean = jumlah datum/ banyak datum
= 220/10
= 22
9. 6 numbers that have a median of 8 mean of 9 and range of 13
Penjelasan dengan langkah-langkah:
6 numbers that have a median of 8 mean of 9 and range of 13.
its could be :
2 , 7 , 7, 9, 14, 15
n = 6
median = 7+9 /2 = 16/2 = 8
mean = (2+7+7+9+14+15) ÷ 6 = 54/6 =9
range = 15-2 = 13
you got it!
10. Give your own example of a geometric sequence with any of the following a.) an increasing geometric sequence b.) a decreasing geometric sequence c.) a geometric sequence where common ratio is between 0 and 1 d.) a geometric sequence where common ratio is negative Then, give the sum of your example using, 1.) the first four terms 2.) the first ten terms 3.) the first 100 terms
d.) a geometric sequence where common ratio is negative
11. 40 35 30 25 20 15 10 tentukan mean, median, Dan modus
mean : rata-rata
40+35+30+25+20+15+10 = 175/7 = 25
median/nilai tengah
10, 15 , 20 , 25 , 30 , 35 , 40 = 25
semoga membantu:)
12. mean dari data 20 15 25 25 35 25 10 30 15 20 25 adalah
Mean = nilai tengah
10 15 15 20 20 25 25 25 30 35
Mean = (20+25):2
= 45:2
= 22,5
mean = 10+15+15+20+20+25+25+25+25+30+35:11
= 245 : 11
= 22,27
penjelasan :
(mean) diperoleh dengan menjumlahkan data seluruh individu dalam kelompok itu, kemudian dibagi dengan jumlah individu yang ada pada kelompok tersebut.
13. Geometric Series&Sequences 1. Find U4,S4 & S∞ for the series below. 144 + 48 + 16 + ... 2. For a geometric sequence with u3 = 24 and u6 = 3, find S∞. 3. A geometric series has a common ratio of 0.4 and a sum to infinity of 250. Find the first term.
Jawaban:
mohon maaf saya tidak bisa menjawab soal kamu mohon maaf???
14. The mean height of 20 boys and 14 girls is 161 cm. If the mean height of the girls is 151 cm, find the mean height of 20 boys!
the answer is 168 cm
boys : girls = 20:14 =10 :7
so if girls point lower than the boys it point will up to 10
if boys point is higher than the girl it point will down to 7
in this case the girl point is lower than the boys so 161-10=151 cm ( girl)
and 161+7 =168 cm (boys)
15. Diketahui sekelompok data 40, 30, 35, 20, 40, 25, 45, 35, 40 tentukan mean, median dan modusnya
Mean
mean = jumlah data/banyak data
= 310/9
= 34,444
Median
urutin dari yang kecil, sampe gede. Nilai tengah = median.
median = 35
Modus
yang paling banyak muncul
modus = 40Mean : 20+25+30+35+35+40+40+40+45/9 = 34,4
Median :35
Modus : 40
16. The arithmetic mean of two positive numbers exceeds their geometric mean by 50. By how much does the square root of the larger of the two numbers exceed the square root of the smaller? (A) 10 (B) 30 (C) 50 (D) 70 (E) 100
Jawab:
[tex]\displaystyle \frac{a+b}{2}=\sqrt{ab}+50\\a+b=2\sqrt{ab}+100\\a-2\sqrt{ab}+b=100\\(\sqrt a)^2-2\sqrt{ab}+(\sqrt b)^2=100\\(\sqrt a-\sqrt b)^2=100\\\sqrt a-\sqrt b=10[/tex]
Penjelasan:
[tex]\displaystyle \triangleright~X=\frac1n\sum^{n}_{i=1}x_i\\\triangleright~G=\sqrt[n]{\prod_{i=1}^nx_i}[/tex]
17. find the sum of the terms of an infinite geometric sequence whose first term is 4 and common ratio ⅕
" Barisan Geometri "
__________
>>>Diketahui:
a = 4
r = ⅕
________
>>> S∞ = ....
___________
[tex] \sf S_{ \infty } = \frac{a}{1 - r} [/tex]
[tex] \sf S_{ \infty } = \frac{4}{1 - \frac{1}{5} } [/tex]
[tex] \sf S_{∞} = \frac{4}{ \frac{4}{5} } [/tex]
[tex] \sf\to 4 \div \frac{ 4}{5} \\ \sf \to \cancel{4} \times \frac{5}{ \cancel{4}} [/tex]
[tex] \boxed{ \sf S_{∞} = 5}[/tex]
____________
CMIIW
Ciyo.
18. The mean of a set of 6 numbers is 2 and the mean of another set of 10 numbers is x. If the mean of all 16 numbers is 7, find the value of x.
[tex] \frac{(6.2 +10.x )}{16} = 7 \\ \\ 12 + 10x = 7.16 \\ 12 + 10x = 112 \\ 10x = 112 - 12 \\ x = \frac{100}{10} \\ x = 10[/tex]
19. what does mean of may? and write down the pattern
Why i will always be strong
Jawaban:
May is abbreviation of maybe
Semoga membantu ^^
20. 1. The mean of 20 number is 26. The mean of 10 number is 14. The mean of all numbers is.. 2. The everange of Math test of Budi and Lucy is 80 When nola joins the everange become 82. The math test score of Nola is... 3. Hendry recieved grade of 76, 78, and 82 on 3 test. If he wants to have an everange of 80 The score of the fourth test should be.. 4. The mean of 4 numbers is 25 The mean of 2 numbers is 40. The mean of all numbers is..
Jawaban:
kaoknanwnxhdbsbjzbzbzhz
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