6 × (5x-3)=15 find x in each equation
1. 6 × (5x-3)=15 find x in each equation
6 ( 5x - 3 ) = 15
30x - 18 = 15
30x = 33
x = 1,1
6 × (5x-3)=15
30x -18 = 15
30x = 15 + 18
30x = 33
x = 33/30
2. 8x-(3x-5)= 15 find x in each equation
8x-3x+5 = 15
5x + 5 = 15
5x = 15 -5
5x = 10
x =2
3. What is the value of n in the equation 64 ÷ n = 8
Jawaban:
[tex]64 \div n = 8[/tex]
[tex] \frac{64}{n} = 8[/tex]
[tex]64 = 8n[/tex]
[tex]8n = 64[/tex]
[tex]8n \div 8 = 64 \div 8[/tex]
[tex]n = 8[/tex]
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4. in the equation a=b/c , if value b increases then the value a will
Jawaban:
will increase too
Penjelasan:
a and b is linear correlation, so if value b increase the value a will increae too
5. Four consecutive even numbers add up to 204. If the smallest number is x, then a. Express the other number in x b. Form the equation in x c. Solve the equation, and what are the four numbers?
Penjelasan dengan langkah-langkah:
let the numbers be a,b,c and d
(a) if the smallest number is x,
a = x
b = x+2
c = x+4
d = x+6
(b)
a+b+c+d = 204
x + (x+2) + (x+4) + (x+6) = 204
(c)
x + (x+2) + (x+4) + (x+6) = 204
4x + 12 = 204
4x = 192
x = 48
a = x = 48
b = x+2 = 50
c = x+4 = 52
d= x+6 = 54
6. write a quadratic equation for the area of the floor in terms of w
What are the measurements?
7. the correct equation of electrolyte ionization reaction in water is
the correct equation if electrolyte ionization reaction in water is H2 + O2 = H2O.
8. Find the value of x of absolute value in the following equation: | 4 - 3x | = | -4 |
|4 - 3x| = |-4| |4 - 3x| = 4 , , 4 - 3x = 4 -3x = 4 - 4 -3x = 0 x = 0 . . 4 - 3x = -4 -3x = - 4 - 4 -3x = -8 x = 8/3
9. in the equation a=b/c , if value c increases then the value a will
Arti dari soal diatas:
pada persamaan a = b/c, jika nilai c meningkat maka nilai a akan ...
Jawab:
Karena c merupakan penyebut, maka semakin besar nilai c maka nilai a akan semakin kecil
10. Solve the equation below and give your answer in the simplest form. 2a+1/4a–3=⅔
Jawaban:
artnya : Pecahkan persamaan di bawah dan berikan jawaban Anda dalam bentuk yang paling sederhana.
2a+1/4a–3=⅔
11. an equation that occurs in the theory of gas flow through small-diameter tubes is: Use the equation to determine the SI units of Q.
Jawaban:
kgs^-1
Penjelasan:
The unit k has no units, therefore it has no dimensional formula, so I didn't include it in my workings.
The answer to (p1-p2) will still be written in terms of pressure, so I substituted the whole thing with the dimensional formula of pressure, which is M × L^-1 × T^-2.
The molar gas constant includes K, which stands for Kelvin, so I used the dimensional symbol of T to replace it. The J stands for Joules, which I replaced with its dimensional formula, M • L^-2 • T^-2
Legend: Conversion of units to dimensions
P (Pressure) = ML^-1•T^-2
J (Joules) = M • L^-2 • T^-2
K (Kelvin) = T
T (Temperature) = T
kg (Mass) = M
meter (Length) = L
12. trend equetion, the projeted annual sales ( in dollar ) of a new product are given by the equation S = 150.000 + 3000t, where t is the time in years from 2005. such an equation is called a trend equation. find the projeted annual sales for 2010. is S a function of t?
Jawaban:
projected annual sales for 2010 is:
S = 150.000 + 3.000 (5)
= 165.000
we get the value of t from
t = 2010 - 2005
= 5
Yes, S is a function of t
13. in the 468÷10=46.8 equation,the 46.8 is called what?a.quotion b.differencec.product d.summatemayptika+inggris
Jawaban:
quotion
Penjelasan dengan langkah-langkah:
468 ÷ 10 = 46.8
468 = divisor
10 = divisive
46.8 = result or quotion
Jawaban:
quation
Penjelasan dengan langkah-langkah:
468÷10=64.8
468= divior
14. show that the equation log10(x-4)=2-log10x can be written as quadratic equation in x
Penjelasan dengan langkah-langkah:
[tex] log10(x - 4) = 2 - log10x[/tex]
[tex] log10(x - 4) = log(100 ) - log10x [/tex]
[tex] log10(x - 4) = log( \frac{100}{10x} ) [/tex]
[tex]10(x - 4) = \frac{100}{10x} [/tex]
[tex](x - 4) = \frac{1}{x} [/tex]
[tex] {x }^{2} - 4x = 1[/tex]
[tex] {x}^{2} - 4x - 1 = 0[/tex]
gunakan rumus ABC
x1,2 = (4 ±2√5)/2
x1,2= 2 ±√5
x1= 2-√5
x2=2+√5
syarat antilog;
x-4>0
x>4
jadi x= 2+√5
15. What is the value of x in the equation log5x + log5(x - 4) = log512?
5×∆×π¶×¶5626=111111112222222233333333
16. make an equation of the line that has a gradient in the middle and through (3,-4)
The equation of the line that has a gradient in the middle and through (3 , -4) is y = [tex]\tt - \dfrac {4}{3} x[/tex]
MoreExplanation:Gradient is a straight line that shows how steep the straight line is. The gradient is usually symbolized as m.
Gradient formula :
• through one coordinate, m = [tex]\tt \dfrac {y}{x}[/tex]
• through two coordinates, m = [tex]\tt \dfrac {y_2 - y_1}{x_2 - x_1}[/tex]
Equationofastraightlinethathasagradientformula:
• through one coordinate, [tex]\tt y - y_1 = m\ (x - x_1)[/tex]
• through two coordinates, [tex]\tt \dfrac {y - y_1}{y_2 - y_1} = \dfrac {x - x_1}{x_2 - x_1}[/tex]
• through two parallel lines, [tex]\tt m_1 = m_2[/tex]
• through two perpendicular lines, [tex]\tt m_1 \times m_2 = -1[/tex]
Tobeknown:
a line has a gradient in the middle and through (3 , -4)
Tobeasked:
The equation of the line = . . . . ?
Tobeanswered:
Because the straight line is through one coordinate,
m = [tex]\tt \dfrac {y}{x}[/tex]
m = [tex]\tt - \dfrac {4}{3}[/tex]
Equation :
[tex]\tt y - y_1 = m(x - x_1)[/tex]
y - (-4) = [tex]\tt - \dfrac {4}{3}[/tex] (x - 3)
y + 4 = [tex]\tt - \dfrac {4}{3} x - \dfrac {4}{3} \times -3[/tex]
y + 4 = [tex]\tt - \dfrac {4}{3} x + 4[/tex]
y = [tex]\tt - \dfrac {4}{3} x + 4 - 4[/tex]
y = [tex]\tt - \dfrac {4}{3} x[/tex]
Conclusion:
The equation of the line that has a gradient in the middle and through (3 , -4) is y = [tex]\tt - \dfrac {4}{3} x[/tex]
LearnMore:how to find the equation in which the gradient is known and through one coordinate https://brainly.co.id/tugas/25571198how to find the equation in which the gradient is known and through two coordinates https://brainly.co.id/tugas/25559882how to find the equation in such two parallel lines and through one coordinate https://brainly.co.id/tugas/25544954Detail:Subject : Math
Class : VIII (National School) or IX (Integrated School)
Chapter : Straight Lines Equation
Code : 8.2.3.1
Key Words : gradient, straight lines, equation
17. Find andrews age Their mother age The sum of the ages of the four member in the family is 138 i)Write Down equation in x Solve the equation in (i) to find the value of x III) hence,find the Father's age when Andrew was born
abigail = x
andrew = x + 11
mother = 3x
father = 2 (x+11) = 2x + 22
a.i. andrew's age = x + 11
a.ii. mother's age = 3x
b.i. x + x + 11 + 3x + 2x + 22 = 138
b.ii. x + x + 11 + 3x + 2x + 22 = 138
7x + 33 = 138
7x = 138 - 33
7x = 105
x = 105/7
x = 15
b.iii father = 2.15 + 22 = 30 + 22 = 52
andrew = x + 11 = 15 + 11 = 26
the father's age when andrew was born = 52-26 = 26
18. 1. determine the differential equation foto the give circuit2. transform the equation into laplace transform3. determine the transfer function for the given circuit
Penjelasan dengan langkah-langkah:
jjnrnrjejeheh3u3hehndndjdhr
19. The ion h2f is formed when hydrogen fluoride gains a proton as shown in the equation .....
Jawaban:
- co-ordinate bond
- the shared electron pair is donated to the H+ ion from the fluoride
Penjelasan:
The ion H2F+ is formed when hydrogen fluoride gains a proton as shown in the equation
HF + H+ --> H2F+
Name the type of bond formed when HF reacts with H+
Explain how this bond is formed (2)
20. Write down an equation in x and hence find all the angles of the triangle. Helpp
Jawaban:
ahhjhjhhhhhhhhhhhhhhhhhhhhhh
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