3. The average of Math's score of four students is 6.9 If the teacher add the average with Bertha Math's score, the average become 7.2 What is Bertha Math's score?
1. 3. The average of Math's score of four students is 6.9 If the teacher add the average with Bertha Math's score, the average become 7.2 What is Bertha Math's score?
Jawab:
8.4
Penjelasan dengan langkah-langkah:
Nilai Bertha = (7.2 x 5) - (6.9 x 4)
Nilai Bertha = 36 - 27.6 = 8.4
Bertha's Math score is 8.4
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DETIL SOALKelas : Tujuh (7)
Mapel : Matematika
Bab : Statistika
Kode kategori : 7.2.9
Kata kunci : Mean / rata-rata
#KucingOren
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Jawab:
The total score four student = The average x four student
= 6,9 x 4
= 27,6
The total score five student (with Bertha) = The average x five student
= 7,2 x 5
= 36
So... we can conclude that Bertha Math's score is
= The total score five student (with Bertha) - The total score four student
= 36 - 7,4
= 8,4
2. what is the of your english teacher in 8th grade. apa arti bahasa indonesianya
Jawaban:
arti dari bahasa Indonesia nya
APA GURU BAHASA INDONESIA KAMU DI KELAS 8?
3. On her first two quizzes Barbara average score is 9. On the next three quizzes her average score is 10. What decimal number shows Barbara’s average score on all five quizzes ?
[tex] \frac{(2 \times 9) + (3 \times 10)}{2 + 3} \\ \\ \frac{18 + 30}{5} = \frac{48}{5} \\ 9,6 [/tex]
4. the avarage score tejo got his 5games is 78. what is the total score for all his games
Jawaban:
the total score for all his games:
5 x 78= 390
Penjelasan dengan langkah-langkah:
formula for average:
ave= total/frec
thus,
total= frec x ave
happy learning
#first
5. The average of 10 students' test scores is 69. Three student 80,60 and40 tespectively.three other score 90 and two students score 50.the other two students receive the same score,which is......
2 x menunjukkan bahwa nilai kedua siswa yang tidak diketahui bernilai sama. semoga membantu
6. There are 100 student attending at math. contest. the average score of them is 63 of which boys have an average score of 60 and girls have an average score of 70 how many girl attended the contest?
Jawaban:
Male = 30
Famale = 70
Penjelasan dengan langkah-langkah:
For example:
X = boys
Y = girls
63 = 60x + 70y
63 (x:y) = 60x + 70y
63x + 63y = 60x + 70y
3x = 7y
(x + y = 10)
---------------------
Boys / girls average score : (x+y) times Total students
Boys = 3 : 10 x 100 = 30
Girls = 7 : 10 x 100 = 70
7. What is grade fauziah nowShe is in the...grade?
Jawaban:What is grade fauziah now
She is in the now grade?
Penjelasan:Karan menjelaskan dimana Fauziah sekarang
8. The score of Andre’s math daily exam were 6; 7; 8; 9; 9. The average score of Andre’s math daily exam is . . . . *
Jawab:
Penjelasan dengan langkah-langkah:
average=rata rata
rata rata =jumlah data : banyak data
jumlah data =6+7+8+9+9=39
banyak data =5
rata rata =7,8
maaf kl ada yg salah,teliti dlu ya.makasih, semangat trs:)
9. The average average height of a good is 142 cm theheightis 138 cm. what is the height of the other girls?
Jawab:
Penjelasan dengan langkah-langkah:
Diketahui :
Rata-rata tinggi perempuan = 142 cm
x₁ = tinggi perempuan pertama = 138 cm
Ditanya : x₂
Jawab :
Rata-rata
=> (x₁ + x₂ ) / 2 = 142
=> (138 + x₂ ) = 2 * 142 = 284
=> x₂ = 284 - 138 = 146 cm
Tinggi perempuan kedua = 146 cm
10. What is the average of 4,6,7 and 3
Jawab:
Average = 5
Penjelasan dengan langkah-langkah:
Average = jumlah data/ banyak data
= (4+6+7+3)/4
= 20/4
= 5
11. When 100 students took a test, the average score was 85.2. Two more students took thetest. The sum of their score was 135. What is the new average?
Answer :
(100 x 85,2) + 135 = a x 102
8520 + 135 = 102a
8655 = 102a
a = 84,85
12. The average of 4x and 6 is 19. What is the average of 6x and 4 ?
semoga bermanfaat........
13. The average score for 30 students is 7,4. there are 2 new students who join the class, and the average score changed to 7,5. how many average score for 2 new students?
Jawaban:
32 x 7,5 = 30 x 7,4 + 2 x A
240 = 222 + 2A
2A = 240–222
A = 18÷2
A = 9,0so, the average score for 2 new students is 9,0
__________
semangat belajar....
14. the average score of John's 3 tests is 75.what would be his 4th test,if he wants to increase the average to 80?
his 4th test score must be 95
15. the average of 10 student test scores is 69. three student score 80, 60 and 40 respectively. three other student score 90 and two student score 50. the other two student receive the the same score which is
average = 69 x 10/10 = 690/10 = 69
scores = 80,60,40, 90,90,90,50,50,x,x
total = 690 = 550 + 2x
2x = 690 - 550 = 140
x = 70
16. the audition is opened for the 7th and 8th grade students
di artikann???
audisi di buka untuk kelas 7 dan 8
17. The average score of John and his 5 friends for a Mathematics test is 80 marks. a. Find the total Mathematics score of John and his 5 friends. (2 points) b. If we exclude John's marks, his 5 friends have an average score of 78 marks. What is John's score? langsung jawabnya
[tex]a)6 \times 80 = 480 \\ b).480 - (5 \times 78) \\ 480 - 390 \\ 90[/tex]
18. cristiano score 3,2,1,2,1,3,and 4goals in 7 matches. What was theaverage score per Match? tolong jawab
Jawab:
Avarage score= (3+2+1+2+1+3+4) :7
=16:7
=2 2/7 atau 2,285
Jika dibulatkan, rata-rata skornya 2
19. The average score of all the girls in a class is 65 and the average score of all the boys in the class is 72. If the total number of students in the class is 35 and the average score of all the stidents in the class is 69, find the number of boys in the class
I am sorry, I not understand, indonesian speak please
20. what is the average daily temperature in the Earth and what is the average nightly temperature on Earth?
The average surface temperature of the Earth, day or night, is between 57.2 and 61 degrees Fahrenheit
https://www.reference.com/science/average-temperature-earth-night-9016b9ada41eacf0
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