Find the sum of 803 and 349.
1. Find the sum of 803 and 349.
Jawab:
1152
Penjelasan dengan langkah-langkah:
803
349
____ _
1152
JAWABAN :
1152
803+349 = 1152
2. Find the sum of 460 and 75.
Jawaban:
460
75 +
535
Penjelasan dengan langkah-langkah:
......................
3. find the sum of the value of the digit 4 in 3471 and 4945
Penjelasan dengan langkah-langkah:
digit 4 in 3471 = 400
digit 4 in 4945 = 40
400 + 40 = 440
4. 1) Find all the prime numbers between 10 and 30, and whose sum of the digits is 8. *
Jawab:
1.) Bilangan Prima di Antara 10 dan 30 = {11, 13, 17, 19, 23, 29}
Yang Jumlah Digit nya 8 = {17}
5. The sum of half of a number and 49 is 2¼ of the numbers. Find the number.
Jawab:
28
Penjelasan dengan langkah-langkah:
Ini kita bikin persamaan matematikanya dulu, ya. Baru dicari =
1/2x + 49 = 2 1/4x
1/2x + 49 = 9/4x (dikali 4)
2x + 196 = 9x
196 = 9x - 2x
196 = 7x
28 = x
Semoga membantu, yaa.
6. 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.
7. Find the sum of 2/3 and 1/9! tolongin:''
Penjelasan dengan langkah-langkah:
[tex] \frac{2}{3} + \frac{1}{9} = \\ \frac{6}{9} + \frac{1}{9} = \\ \frac{7}{9} [/tex]
8. The sum of two numbers is 20 and the sum of their squares is 272. Find the firstnumber
Jawab:
4 or 16
Penjelasan dengan langkah-langkah:
Let the numbers be x and y
x + y = 20
sum of their squares is 272 so x^2 + y^2 = 272
Find the first number,
We know that x^2 + y^2 = (x + y)^2 - 2xy
so 272 = 20^2 - 2xy
272 = 400 - 2xy
2xy = 128
xy = 64
We know that x + y = 20 and xy = 64, so we can make quadratic equation,
let a1 = x and a2 = y
a^2 - 20a + 64 = 0
(a - 16)(a - 4) = 0
a = 16 or a = 4
So the first number can be 4 or 16
If the first number less than the second, the answer is 4
Semoga terbantu :)
IG: @djie.jemmy
Jawab:
4 or 16Penjelasan dengan langkah-langkah:
If the first number is [tex]x[/tex] and the second one is [tex]y[/tex],
we can write:
[tex]x + y = 20[/tex]
[tex]x^{2} + y^{2} = 272[/tex]
Then
[tex]x = 20 - y[/tex]
Substitute [tex]x = 20 - y[/tex] to [tex]x^{2} + y^{2} = 272[/tex]
[tex](20 - y)^{2} + y^{2} = 272[/tex]
[tex]400 - 40y + y^{2} + y^{2} = 272[/tex]
[tex]2y^{2} - 20y + 128 = 0[/tex]
Factorize the equation and we get:
[tex](y-16)(y-4) = 0[/tex]
[tex]y = 16[/tex] ∨[tex]y = 4[/tex]
If we substitute [tex]y = 16[/tex] to [tex]x = 20 - y[/tex], we get [tex]x = 4[/tex]
So, we can conclude that both numbers are 4 and 16.
9. find the sum of prime number between 1 to 10
Jawab:
jumlah bilangan prima dari 1 sampai 10 adalah 17
2 + 3 + 5 + 7 = 17
10. apter 9 Review(a) Find the sum of , and3
Jawaban:
aku tidak mengerti
Penjelasan dengan langkah-langkah:
wokwokwokwok
11. Find the sum of even numbers between 10 - 30
Jawaban:
12,14,16,18,20,22,24,26,28
12. The sum of a number and twice the square of the number is 45. Find the number.
Penjelasan dengan langkah-langkah:
let the number = n
=>n+2n²=45
2n²+n-45=0
(2n-9)(n+5)=0
n=9/2orn=-5
goodluck
13. find the sum of 3/10 and the difference bettwen 3 1/2 and 1 3/5.
Jawaban:
[tex] \frac{3}{10} + (3 \frac{1}{2} - 1 \frac{3}{5} ) = \frac{3}{10} + (2 + \frac{3}{2} - 1 \frac{3 }{5} )[/tex]
[tex] = \frac{3}{10} + (2 - 1 + \frac{15}{10} - \frac{6}{10}) = \frac{3}{10} + 1 \frac{9}{10} [/tex]
[tex] = 1 \frac{12}{10} = 2 \frac{2}{10} = 2 \frac{1}{5} [/tex]
14. The sum of one-fifth of a number and 3 7/10 is 7. Find the number.
Penjelasan dengan langkah-langkah:
penjumlahan 3 7/10
37/10=3,7
angkanya yang kurang adalah 3
15. the sum of number and 6 is 31. Find the number
31 - 6 = 25
Jawabannya adalah 25
25 + 6 = 31
Maaf kalau salah
16. find the sum of all multiples of 3 between 50 and 100
Jawab:
1125
Penjelasan dengan langkah-langkah:
a = 51
U15 = 99
[tex]S_n=\frac{n}{2} (a+U_n )\\S_15=\frac{15}{2} (51+99 )=1125[/tex]
I hope this will help you!!!
Mark it as the smartest answer and don't forget to follow me !!! ^^
17. the sum of the first and ninth term of an arithmetic progression is 24.find the sum of the first nine terms of this progression
semoga membantu. maaf, jika salah
18. find the diffrence between the square of 7 and the sum of the first 7 odd numbers
Jawab:
0
Penjelasan dengan langkah-langkah:
The square of seven is equal to 49 ( 7 x 7 ). The first 7 odd numbers must be calculated manually. If u want to use the arithmetic formula, it'll take longer than counting it manually. Anyways, the sum of the first 7 odd numbers is equal to 49. Henceforth, 49 -49 is 0
19. The sum of 4 cunsencentive and odd number is 64. Find the largest of 4 numbers
Let, the middle number in the sequence be X.
So, the sequence of five consecutive odd numbers will be,
(X-2),(X-1),X,(X+1),(X+2)
Now, the sum of 64 consecutive odd numbers is 64
So,
(X-2)+(X-1)+X+(X+1)+(X+2)= 64
4X = 64
X = 64/4
X = 16
Find the largest number
= X+2
= 16+2
= 18
So, the largest number in the sequence will be 18.
20. add 2/10 and 3/5subtract 5/10 from 3/4find the sum of 1/6 and 2/3find the diffrence 7/8 and 3/4pake cara nya jga
Penjelasan dengan langkah-langkah:
caraanyaa inkertas ya...
Penjelasan dengan langkah-langkah:
[tex] \frac{2}{10} + \frac{3}{5} = \frac{2}{10} + \frac{6}{10} = \frac{8}{10} = \frac{4}{5} [/tex]
[tex] \frac{3}{4} - \frac{5}{10} = \frac{15}{20} - \frac{10}{20} = \frac{5}{20} = \frac{1}{4} [/tex]
[tex] \frac{1}{6} + \frac{2}{3} = \frac{1}{6} + \frac{4}{6} = \frac{5}{6} [/tex]
[tex] \frac{7}{8} - \frac{3}{4} = \frac{7}{8} - \frac{6}{8} = \frac{1}{8} [/tex]
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