there are 30 students in a class.the mean of mathematics score ofmale students is 75,while the mean of mathematics score of female students is 70.if the number of male students is 18,calculate the mean of mathemarics score in class!
1. there are 30 students in a class.the mean of mathematics score ofmale students is 75,while the mean of mathematics score of female students is 70.if the number of male students is 18,calculate the mean of mathemarics score in class!
Total students = 30
Male students = 18
Female students = 30 - 18 = 12
Mean of mathematics score of male students = 75
Mean of mathematics score of female students = 70
Mean = {(75 × 18) + (70 × 12)} ÷ (18 + 12)
Mean = (1350 + 840) ÷ 30
Mean = 2190 ÷ 30
Mean = 73
The mean of mathematics score in class is 73.[tex]\displaystyle Statistics \ [VIII] \\ \\ mean = \frac{f1.x1+f2.x2}{f} \\ where : f1 = the \ number \ of \ male \ students \\ x1 = the \ mean \ of \ mathematics \ score \ of \ male \ students \\ f2 = the \ number \ of \ female \ students \\ x2 = the \ mean \ of \ mathematics \ score \ of \ female \ students \\ f = total \ numbers \ of \ students \\ \\ mean = \frac{18.75+(30-18).70}{30} = 73 \xrightarrow \ Answer [/tex]
2. 1. Mathematics is being taught by Amman in front of students A. Amman tauhgt Mathematics in front of students B. Amman teaches Mathematics in front of students C. Amman was teaching Mathematics in front of students D. Amman is teaching Mathematics in front of students2. My mother drove the car in the morning A. The car was being droven by my mother in the morningB. The car has been droven by my mother in the morningC. The car was droven by my mother in the morningD. The car is droven by my mother in the morning
Jawaban:
1. D. Amman is teaching Mathematics in front of students
2. A. The car was being droven by my mother in the morning
Semoga membantu, maaf kalau salah ~~
3. 1. Mathematics is being taught by Amman in front of students A. Amman tauhgt Mathematics in front of students B. Amman teaches Mathematics in front of students C. Amman was teaching Mathematics in front of students D. Amman is teaching Mathematics in front of students2. My mother drove the car in the morning A. The car was being droven by my mother in the morningB. The car has been droven by my mother in the morningC. The car was droven by my mother in the morningD. The car is droven by my mother in the morning
Jawaban:
1. A. Amman tauhgt mathematics in Front of students
2. D. The car is droven by my mother in the morning
maaf y kalau salah
4. 4 poinDear Susi, Congratulation on your success inwinning the gold medal at the 2019 AsianMathematics Olympiad. Hope it will lead you tothe next international championship. From:Bagus. What is the purpose of the text? *Oa. To remember Susi about her winningO b. To tell about Susi's championOc. To announce the winner ofMathematics OlympiadO d. To Congratulate Susi
Jawaban:
D. To congratulate susi
semangat belajar
Jawaban:
4 poin
Dear Susi, Selamat atas kesuksesan Anda di
memenangkan medali emas di Asian 2019
Olimpiade Matematika. Berharap itu akan membawa Anda ke
kejuaraan internasional berikutnya. Dari:
Bagus. Apa tujuan dari teks? *
HAI
Sebuah. Mengenang Susi tentang kemenangannya
O b. Untuk menceritakan tentang juara Susi
Hai
c. Untuk mengumumkan pemenang
Olimpiade Matematika
O d. Untuk Mengucapkan Selamat Susi
jawaban : D.
5. there are 325 students in the graduation hall.130 of the students are boys.what percentage of the students are boys?
percentage boys = (130/325) × 100%
= 40 %Persentase banyak anak laki laki :
= 130/325 . 100%
= 40%
#RA-Help
6. ....lots of students in the university
Jawaban:
A lots of student in the university
mff klo slh.
Jawaban:
that is a lots of students in the university
# semoga membantu
# jadikan yg terbaik ya
7. Given mathematics score of 10 students ; 5,8,7,9,7,6,7,9,10, x . If the mean of the data is 7,6 the value of x is ...
Penjelasan dengan langkah-langkah:
mean.
(5+8+7+9+7+6+7+9+10+x)/10=7,6
68+x =7,6.10
68+x =76
x =76-68
x =8
Value of x is 8
8. Oh my sister congratulation... you are the best in mathematics olympiad.. i hope you succes.. and fighting! terjemah kan dalam bahasa indonesia
Jawaban:
oh selamat saudara (pr) ku ... kamu adalah yang terbaik di olimpiade matematika... aku berharap kamu sukses.. dan semangat !
Jawaban:
Oh kakakku / adikku, selamat.... kamu adalah yg paling baik di olimpiade matematika... saya harap kamu berhasil.. dan berjuang!
Penjelasan:
9. the teacher teaches the students mathematics. the past tense from of the sentence above is....a.the teacher did teach the students mathematics.b.the teacher teached the students mathematics.c. the teacher taught the students mathematics.d.the teacher is teaching the students mathematics.
Jawaban:
C. the teacher taught the sttudents mathematics.
Maaf jika Salah.
Jawaban:
the answer is B
Penjelasan:
10. 20% of the number of students of a school came to school by bike. If 60 students used bike, what was the total number of the students in that school?
Jawaban:
300
Penjelasan dengan langkah-langkah:
20%=60
1%=3
100%=300
11. two students didn do mathematics homework fill in the correct pronoun
Jawaban:
dua siswa tidak mengerjakan pekerjaan rumah matematika mengisi kata ganti yang benar
Jawaban:
the two students didn't do the mathematics homework
maaf kalo slah :)
12. The number of books in the class library is 17 more than 3 times the number of students in the class. If 5 students are absent, each student can borrow exactly 4 books from the library. Find the number of students in the class.
misal x = buku dan y = siswa, maka
x = 3y + 17 ... (i)
5 siswa absen dan setiap siswa dapat meminjam buku masing-masing 4 buku, artinya
(y - 5).4 =x
4y -20 = x ... (ii)
substitusi pers (i) ke (ii)
4y - 20 = 3y + 17
y = 37
Jadi, banyak siswa dalam kelas adalah 37 siswa
#MathIsBeautiful
13. a group of primary school students took the science placement test. The results of the test were: 1/7 of the students scored A, 1/3 of the students scored B, 1/3 of the students scored C and the rest of the students failed the test. If a total of 100 students scored A and B in the test, how many students failed the test?
Wish you luck. Correct me if I’m wrong.
14. The students study Mathematics on Sundays. The passive form of this sentence is...a.The students was studied by Mathematics on Sundays.b.Mathematics is studied by the students on Sundays.c.The students are studied by Mathematics on Sundays.d.Mathematics were studied by the students on Sundays.
Jawaban:
D.Mathematics were studied by the students on sundays
Penjelasan:
Ya begitulah males jelasin ::v
15. A class has 40 students. Given that 75% of them passed a Mathematics test. The number of students who past the test is ….10 2030 40
Jawaban:
The answer : 30
Penjelasan dengan langkah-langkah:
40 x 75/100 (karena 75%)
= 30
16. the students .... mathematics seriously
Jawaban:
the students do mathematics seriously
17. 3. The page of mathematics book starts from 1. If there are 852 digits used in the book, then the number of the last page of the book is ....?
Jawab:
320 pages
Unit digits:
Page 1-9 = 9×1 = 9 digits
Tens digits:
Page 10-99 = 90×2 = 180 digits
The rest digits:
= 852 - (9+180)
= 663
The hundred digits:
= 663 ÷ 3
= 221 pages
The total pages:
= 99 + 221
= 320
18. the number of students in a school 120 students if 70persen of the students are female, find the number of male students in the school Jawab dengan benar pelajaran : matematika ( bhs Ingris)
100%-70%
male = 30%
Then..
30/100×120
= 36 male students
xxxunknownxxx
100% - 70% = 30%[tex]30\% \times 120 \\ \frac{30}{100} \times 120 = 36[/tex]
There are 36 male students in the school
19. the statement are grammatically correct, excepta. A student is in the laboratory. They are doing a science experimentb. The students win the math olympiad. The teacher congratulate them.c. The students are in the laboratory. They are doing science experimentd. The students win the math olympiad. The teachers are very proud of themkak tolongin mau dikumpulin
Jawaban:
C. The student are in the labolatory. They are doing science experiment.
SEMOGA BERMANFAAT
JADIKAN JAWABAN TERPINTAR YAAAA
20. the students always... mathematics seriously
Jawaban:
The student always Make Mathematics seriouslu
Jawabannya adalahhh TAKEThe students always take mathematics seriously
Kenapa : jelasinnya susah , beberapa kata inggris ada yang meleset artinya kalo di terjemahin ke indonesia . Tapi menurut ku take itu jawaban terbaik .
Maksudnya siswa itu selalu serius terhadap matematika .
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