2/5 of my sister's beads are yellow. 7/13 of the remaining beads are green. the rest of the beads are black. if there are 32 more yellow beads than black beads, how many beads are green?
1. 2/5 of my sister's beads are yellow. 7/13 of the remaining beads are green. the rest of the beads are black. if there are 32 more yellow beads than black beads, how many beads are green?
Arti = 2/5 manik-manik kakakku berwarna kuning. 7/13 dari manik-manik yang tersisa berwarna hijau. Bagian manik lainnya berwarna hitam. Jika ada 32 manik-manik kuning lebih dari manik-manik hitam, berapa banyak manik-manik bewarna hijau?
kuning = 2/ 5 = 26/65
green = 7/13 = 65/65 - 26/65 = 39/65 × 7/13 = 21 / 65
black = 65 / 65 - ( 26/65 + 21/65) = 65/65 -47/65 = 18/ 65
kuning - hitam = 32
26 - 18 = 8
32 ÷ 8 = 4
sehingga
kuning = 26×4 = 108
hijau = 21 × 4 = 48
hitam= 18 ×4 = 72
maka jawabannya adalah 48
2. Natasha had 2356 beads, Lydia had 1176 beads Nd Munah had 1708 beads at first.After they each used an equalnumber of beads, Natasha had 3 times as many beads left as Lydia. Gow many beads did each of them use?
natasha's beads = 2356
Lydia's beads = 1176
number of used beads = x
natasha's beads - x = 3(Lydia's beads - x)
2356 - x = 3*1176 - 3x
2356 - x = 3528 - 3x
-x + 3x = 3528 - 2356
2x = 1172
x = 586
3. Gilbert had 1240 beads and raj had 4730 beads. Raj gave some beads to gilbert. In the end, gilbert has twice as many beads as raj. A. How many beads did raj have in the end? B. How many beads did raj give gilbert?
Jawaban:
A. Gilbert : 2parts
Raj : 1part
Meaning Raj has 1/3 of total beads
= 1/3 * (1240+4730)
= 1990 beads
B. Raj gives to Gilbert
= 4730 - 1990
= 2740 beads
Penjelasan:
4. Maria and farida had 250 beads altogether. After maria use 18 beads to make bracelet and farida gave away 2/5 or her beads. They had the same number of beads left. How many beads did maria have at first?
For example Maria's beads is x and Farida's beads is y. so
x+ y = 250
x = 250 - y
x - 18 = y - (2/5 x 250)
x - 18 = y - 500/5
x - 18 = y - 100
x = y - 100 + 18
x = y - 82
250 - y = y - 82
250 + 82 = y + y
2y = 332
y = 166
x = 250 - y
x = 250 - 166 = 84
Thus, Maria have 84 beads and Farida have 166 beads at first...
===I:m sorry if it wrong===
5. There are some red, yellow and green beads in a box. 3/7 of the beads are red, 1/3 of the beads are yellow and the rest are green. There are 20 more red beads than green beads. How many yellow beads are there?
Jawab:
21
Penjelasan dengan langkah-langkah:
Known Variables:
- 3/7 of the beads are red
- 1/3 of the beads are yellow
- The rest of the beads are green
- There are 20 more red beads than green beads
I am not sure if this is the fastest way but it works
We are going to solve this via comparison method
3/7 of total : 1/3 of total : 3/7 of total - 20
We can substitute a number that can make a complete number, You might think (3 x 7 or 21) is the right number, but if we use that, the green beads would be negative
3/7 x 21: 1/3 x 21 : 3/7 x 21 - 20
3 x 3 : 7 : 9-20
So we need to find the any number that is higher than 20 once applied 3/7, since 42 is not enough, 49 and 56 is not divisible by three, 63 is our number, thus;
3/7 x 63: 1/3 x 63 : 3/7 x 63 - 20
27 : 21 : 27-20
27 : 21 : 7
Why did I say any in the first place? Lets take an example if we use something bigger like 126,
3/7 x 126: 1/3 x 126 : 3/7 x 126 - 20
54 : 42 : 54-20
(We shouldn't subtract it since if we subtract it before we simplify it, it would be -10 in effect, -5 the next, etc.)
Since all are divisible by 2 (54 : 42 : 54), Ignore the 20 for now
27 : 21 : 27, now since it can't be divided anymore, decrease the last one with 20
27 : 21 : 27 - 20
27 : 21 : 7 (Same answer)
Now we know that:
Red beads: 27
Yellow beads: 21
Green beads: 7
This took some time to write, if you don't mind, please make this the best answer ^^
6. Sam has some green and blue beads,number of green beads is 1/3 of the total number of beads,what fraction of beads are blue ?
Jawab:
2/3
Penjelasan dengan langkah-langkah:
1/3+2/3=1
Jawaban:
2/3
Penjelasan dengan langkah-langkah:
means the rest is blue
7. Workbook 5A page 41Section C (11)samantha had 640 beads and holly had 761 beads ats first. they mixed their beads together and used 276 beads for a craft project. they then packed the remaining beads equally into 25 packets. how many beads were there in each packet?
Jawaban:
45
Penjelasan dengan langkah-langkah:
640+761=1401
1401-276=1125
1125÷25=45
8. Maia had 2064 more beads than Jenny. After Maia used 144 beads to make a necklace, she had 5 times as many beads as Jenny a. How many more beads did Maia have than Jenny in the end? b. How many beads did Maia have at first?
M = 2064 + J
5J = M - 144
5J = 2064 + J - 144
5J - J = 2064 - 144
4J = 1920
J = 1920 : 4 = 480 beads
a. 480 x 5 = 2400 Maia's beads
b. M = 2064 + J
M = 2064 + 480 = 2544 beads
9. Maia had 2064 more beads than jenny After Maia used 144 beads to make a necklace, she had 5 times as many beads as Jenny. (A). How many beads dis Maia have than Jenny in the end? (B). How many beads did Maia have at first?
M = 2064 + J
5J = M - 144
5J = 2064 + J - 144
5J - J = 2064 - 144
4J = 1920
J = 1920 : 4 = 480 beads
a. 480 x 5 = 2400 Maia's beads
b. M = 2064 + J
M = 2064 + 480 = 2544 beads
10. There are 3650 beads in a jar 1985 beads are red and the res blue and yellow If there are 663 yellow beads , how many mor beads than blue beads are there in the jar ?
Jawaban:
1,002 beads
Penjelasan dengan langkah-langkah:
If there are 1985 red beads and 663 yellow beads then=
3650 - 1985 = 1,665
1,665 - 663 = 1,002
So there are 1,002 blue beads
SORRY
I hope this helps
11. fiona has 45 red beads and 60 blue beads. She gives them all to her pupils. Each pupil receives the same number of red beads and the same number of blue beads. What is the most number of pupils Fiona can give the beads to a. 7 b. 15 c. 10 d. 6
Jawab:
C. 15
Penjelasan dengan langkah-langkah:
First we have to find the HCF (Highest Common Factor) FPB in Indonesian).
We have to find the factorisation. It can be found by using Factor Tree
So the Factorisation of 45 is: 5x3^2
And the Factorisation of 60 is: 2^2x3x5
Then we have to find the common factorisation. Which means the factorisation inside each of the number's factorisation.
There is 3 and 5
If there are different equation between each factorisation, for HCF, we need to use the lowest one.
So, 3x5
3x5
= 15
Fiona can give beads to 15 pupils.
12. Najwa makes a necklace by stringing some beads. For every 3 pink beads on the necklace, there are 12 blue beads. What is the proportion of the number of blue beads?
Jawaban:
Najwa membuat kalung dengan merangkai beberapa manik-manik. Untuk setiap 3 merah muda
manik-manik di kalung itu, ada 12 manik-manik biru. Berapa proporsinya?
dari jumlah manik-manik biru
13. Eva and Lily had a total of 3672 beads. When Eva gave Lily 560 beads, they had an equal number of beads. How many beads did Lily have at first?
Banyak manik-manik yang dimiliki Lily pada awalnya adalah 1276 manik-manik. Untuk menyelesaikan soal ini, kita gunakan metode eliminasi.
Penjelasan dengan langkah-langkah:
Diketahui:
Eva and Lily had a total of 3672 beads.
When Eva gave Lily 560 beads, they had an equal number of beads.
Ditanya:
How many beads did Lily have at first?
Jawab:
Langkah pertama, kita buat persamaannya.
Misalkan Eva = E dan Lily = L
Eva and Lily had a total of 3672 beads.
E + L = 3672 (persamaan 1)
When Eva gave Lily 560 beads, they had an equal number of beads.
E - 560 = L + 560
E - L = 560 + 560
E - L = 1120 (persamaan 2)
Langkah kedua, kita eliminasi E dari persamaan 1 dan persamaan 2, untuk mendapatkan nilai L.
E + L = 3672
E - L = 1120 -
2L = 2552
L = 2552 : 2
L = 1276
Banyak manik-manik yang dimiliki Lily pada awalnya adalah 1276 manik-manik.
Pelajari lebih lanjutMateri tentang persamaan linear dua variabel dengan metode eliminasi dapat disimak di brainly.co.id/tugas/407428Materi tentang persamaan linear dua variabel dengan metode eliminasi dapat disimak di brainly.co.id/tugas/2559844Materi tentang persamaan linear dua variabel dengan metode substitusi dapat disimak di brainly.co.id/tugas/13162341==================================Detail JawabanKelas : 8
Mapel ; Matematika
Kategori ; Persamaan Linier Dua Variabel
Kode : 8.2.5
#AyoBelajar
#SPJ2
14. Xavier, yaozhou and zara had some beads. xavier and yaozhao had a total of 438 beads. xavier and zara had a total of 204 beads. yaozhao had 3 times as many beads as zara. how many beads did xavier have ?
Xavier = X
Yaozhou = Y
Zara = Z
x+y = 438
x+z = 204 •••••(2)
y = 3z
x+y = 438
x+3z = 438 ••••(1)
x+3z = 438
x+z = 204 (x3)
-------------
x+3z = 438
3x+3z = 612
-------------(dikurang)
-2x = -174
x = -174/-2
x = 87 beads
So, xavier has 87 beads
15. Ella had some beads, 2/5 of them were blue. 5/9 of the remaining beads were green and the rest were pink. There were 32 fewer pink beads than blue beads. How many beads did Ella have?
240 beads
cara dan jawabannya seperti di foto.
semangat belajar....
16. mary had some beads. 2/5 of her beads were black and 1/10 of her beads were blue. The remaining beads were red. Mary used all her red beads to decorate some purses for her friends. She used 1/8 of her red beads for each purse. How many purses were there?Tolong bantu Jawab☺...
Jawaban:
8
Penjelasan dengan langkah-langkah:
Fokus saja pada pernyataan "setiap tas (purse) menghabiskan ⅛ dari manik merah(red bead)", Maka untuk mencari jumlah tas, tinggal bagikan saja 1 dengan ⅛.
[tex] \frac{1}{ \frac{1}{8} } = 8[/tex]
17. A box contains some red, yellow and blue beads. The ratio of the number of red beads to the number of yellow beads is 2 : 5. The ratio of the number of blue beads to the number of red beads is 4 : 7. What fraction of the beads are yellow?1️⃣ 35/372️⃣ 22/573️⃣ 14/574️⃣ 8/57HELPP!! TYSM FOR THE ANSWERS
Jawab: (1.) 35/37
Penjelasan dengan langkah-langkah:
Red : yellow = 2 : 5
Blue : red = 4 : 7
2 . 7 : 5 . 7 = 14 red : 35 yellow
4 . 2 : 7 . 2 = 8 blue : 14 red
blue : red : yellow
= 8 : 14 : 35
Yellow = 35 / 8+14+35
Yellow = 35/57
18. Pollyn had 205 more coloured beads than Josephine and 60 more coloured beads than Kim, and 20 beads to Josephine. (A) How many more beads did Kim have than Josephine at first ? (B) How many more beads does Pollyn have than Josephine now ?
A. 205-60=145
Kim has 145 more beads than josephine
B.205-20=185
Now Pollyn had 185 more beads than josephine
19. Como podemos definir polielia?como surgem vários alelos?
- Quando existem tres ou mais tipos de alelos diversos para o mesmos locus cromossomico culpa
- um gene que sofre diversas mutacoes produzindo varios genes alelos ( serie de alelos )
20. apa bahasa arabnya muffin dan prayer beads
Jawaban:
Muffin
Alkueak الكعك
Sedangkan prayer beads
Misbach (Bahasa Arab: م س)
Penjelasan:
Maaf kalau salah
Jawaban:
A.) Muffin = الكعكalkueak.B.) prayer beads = مسبØØ© الصلاةmusabahat alsala.Penjelasan:
Semoga membantu :)
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