1. How many grams of NaCl required to prepare each of the following solutions:
1. 1. How many grams of NaCl required to prepare each of the following solutions:
Penjelasan:
Sorry sir, where is the question and the answer choices?
2. how many grams of NaC1 required to prepare each of the following solutions2500 ppm (w/v) NaC1 250 mL solutions
Penjelasan:
Formula : m NaCl (in Molar) = n ppm × mL
= 2500 ppm = masses of Salt / mL
= masses of Salt (µg) = 2500 ppm × mL
= massea of salt (µg) = 2500 ppm × 250 mL
= masses of salt (µg) = 625 µg or in mg = 625 µg × 10^-4 = 0,0625 grams
3. determine whether each of the following numbers is a factor of the number in the brackets 5 bracket 60 bracket
Tentukan apakah masing-masing angka berikut adalah faktor dari angka dalam braket 5 braket 60 braket
itu adalah artinya
faktor 5 = 5
faktor 60 = 2,2,3,5
so factors of 5 and 60 are
faktor 5 = 5
faktor 60 = 2,2,3,5
4. Find the value of the unknown in each of the following figure
180 = 8a
22,5 = a
2a = 45
3a = 67,5
A = 45
B = 67,5
C = 67,5
5. Find the perimeter and the area of each of the following shaded regions!
Jawab:
Penjelasan dengan langkah-langkah:
Perimeter : keliling
a.
P =60/360 x 2πR
=60/360 x 2x22/7x42
= 44 cm
Area = 60/360 x πR²
= 60/360 x 22/7 x 42²
= 924 cm²
b.
P1 = 1/4x2πR1 + 1/4x2πR2 + 2x(R1-R2)
= 1/4x2π( R1+R2) + 2x(R1-R2)
= 1/2x22/7x(18-12) + 2(18-12)
=44/7 + 8
= 44/7 + 56/7
= 100/7
= 14,3 cm
Area = 1/4xπ( R1²- R2²)
= 1/4x22/7x(18²-12²)
= 22/28 x (324-144)
= 22/28 x 180
= 141,4 cm²
6. find the value of each of the following 1/5 Of 8
Jawaban:
find the value of each of the following 1/5 Of 8.
temukan nilai masing-masing 1/5 Dari 8 berikut
7. Determine whether each of the following numbers is an integer. -14 , 3.9 , 12 , 85, 0 , -2
-14 , 12 , 85 , 0 , -2
8. 1. Determine the result of the following questions a. 17² b. 21² 2. Determine the result of the following questions a. √ 1.764 b. √ 2.209 3. ∛5.832 =….. 4. ∛59.319 =…..
Jawaban:
1.289
b.441
2.a.42
b.47
c.18
d.39
Jawaban:
1 .289
B.441
2.a 42
B. 47
c.18
d. 39
Penjelasan dengan langkah-langkah:
maaf kalo misalnya salah ya
9. Find the values of the unknown in each of the following figures:
Jawaban:
segitiga bca = segitiga sama kaki
jika sudut B= 27° maka sudut A= 27°
sehingga sudut C= 180°- 27°-27°=126°
sudutACD=180°-126°=54°
Penjelasan dengan langkah-langkah:
semoga membantu :)
10. find the value of each of the following 0.8% of 4.5m
Jawab:
we can use the formula:
percentage/100 x value = result
So, for this case:
0.8/100 x 4,500,000 = 36,000
Therefore, 0.8% of 4.5 million is equal to 36,000.
11. Find the value of the unknown in each of the following figures
mboh aku gk ngerti ju woyyyyyy
12. factorise each of the following completely
Penjelasan dengan langkah-langkah:
[tex]a. \: {x}^{2} + 8x - 20 \\ \: \: \: \: \: {x}^{2} + 10x - 2x - 20 \\ \: \: \: \: \: x(x + 10) - 2(x + 10) \\ \: \: \: \: \: (x + 10)(x - 2) \\ \\ b. \: 2 {x}^{2} - 5x + 2 \\ \: \: \: \: \: 2 {x}^{2} - x - 4x + 2 \\ \: \: \: \: \: x(2x - 1) - 2(2x - 1) \\ \: \: \: \: \: (2x - 1)(x - 2) [/tex]
Semoga membantu ^_^
13. complete each of the sentences below with one of the following expressions
Jawaban:
1. little
2. a few
3. few
4. little
5. a few
6. little
7. few
8. a few
9. a little
10. few
11. little
12. a few
Penjelasan:
a few (untuk countable noun) dan a little (untuk uncountable noun) kita pergunakan ketika menekankan bahwa ada sejumlah kecil dari sesuatu. (tidak dibicarakan apakah itu cukup atau tidak)
few (untuk countable noun) dan little kita pergunakan untuk menekankan bahwa jumlah itu kurang dari semestinya/kurang dari yang diharapkan.
Smeoga bermanfaat
14. The circular portions of the following figures are semicircles. Find the perimeter and area of each of the following figures.
Penjelasan dengan langkah-langkah:
(a)
Luas = 3x5/2 + 3,14 x 2²/2 = 7,5 + 6,28 = 13,78 m²
Keliling = 3+5 + 3,14x2 = 8 + 6,28 = 14,28 m
(b) Luas = 3,14 x 9/2 + 3,14 x 4,5
= 3,14 x 9 = 28,26 cm²
Keliling = 3,14 x 18/2 + 3,14 x 9
= 3,14 x 18
= 56,52 cm
Penjelasan dengan langkah-langkah:
a.
Luas = 3 × 5/2 + 3,14 × 2²/2 = 7,5 + 6,28 = 13,78 m²
keliling = 3 + 5 + 3,14 × 2 = 8 + 6,28 = 14,28 m
b.
Luas = 3,14 × 9/2 + 3,14 × 4,5 = 3,14 × 9 = 28,26 m²
keliling = 3,14 × 18/2 + 3,14 × 9 = 3,14 × 18 = 56,52 cm
15. find the value of the unknown in each of the following figures
b). Besarnya sudut segitiga sama kaki 180°
maka,
<a + <b + <c = 180°
68° + 64° + 2b° = 180°
132° + 2b° = 180°
2b = 180° - 132°
2b = 48°
b = 24°
d). <ABC = 180°
maka,
<a + <b + <c = 180°
3d° + 4d° + d° = 180°
8d° = 180°
d = 180° / 8°
d = 22,5°
f).<ABC = 180°
maka,
<a + <b + <c = 180°
f° + f° + f° = 180°
3f° = 180°
f = 180°/3°
f = 60°
16. find the value of each of the following:20% of 75
Jawaban:
=75-25%
= -19,25
.
.
.
Semoga Membantu
17. For each of the following figure, find the value of c
Penjelasan dengan langkah-langkah:
16 c = 180°
c = 180°/16
c = 11,25°
16c° = 180°
c° = 180° ÷ 16
= 11,25°
18. find the hcf of each of the following 15,60 dan 75
Jawaban:
The prime factorisation of 60 and 75 are :60 = 2 × 2 × 3 × 575 = 3 × 5 × 5So, HCF = 3 × 5 = 15LCM = 2×2×3×5×5 = 300Now, we will calculate HCF by Euclid's Division algorithm.75 = 60 × 1 + 1560 = 15 × 4 + 0Since the last divisor is 15, hence HCF75,60 = 15LCM75,60 = 60 × 75HCF75,60 = 60 × 7515 = 300
19. find the value of each of the following 1/9 Of 15
Jawaban:
1 2/3Penjelasan dengan langkah-langkah:
1/9 x 1515/91 6/91 2/320. Solve each of the following questions
Penjelasan dengan langkah-langkah:
ada pada gambar, semoga paham dan bermanfaat :)
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