What is the value of n in the equation 64 ÷ n = 8
1. 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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2. What is the value of x from the equation -8x=-56
Penjelasan dengan langkah-langkah:
[tex] - 8x = - 56[/tex]
[tex]8x = 56[/tex]
[tex]x = \frac{56}{8} [/tex]
[tex]x = 7[/tex]
3. What is the value of x in the equation log5x + log5(x - 4) = log512?
5×∆×π¶×¶5626=111111112222222233333333
4. What is the equation of axis of symmetry of the given quadratic equation? * y = x2 – 8x - 9
Jawaban:
x = 4
Penjelasan dengan langkah-langkah:
x = -b/2a
= -(-8)/2(1)
= 4
Jawaban:
x = 4
Penjelasan dengan langkah-langkah:
semoga membantu:)
5. What is the angle of depression which the direction of sight to the visible horizon makes with the plane of the true horizon called?
Jawaban:
apa sudut depresi yang arah penglihatan ke cakrawala terlihat membuat dengan bidang cakrawala yang sebenarnya disenut?
maaf saya cuma bisa mengartikanya saja
6. What is the value of x for the equation 5(3x-2) + 6(4x-3) = 11 ?
5(3x-2) + 6(4x-3) = 11 ?
(5.3x) - (5.2) + (6.4x) - (6.3) = 11
15x - 10 + 24x - 18 = 11
15x + 24x - 10 - 18 = 11
39x - 28 = 11
39x = 11 + 28
39x = 39
x = 39/39
x = 1
So the value of x is 1
7. The average of 5, 6, 8 and n is 7. What is the value of n?
Jawaban:
[tex]7 = \frac{5 + 6 + 8 + n}{4} [/tex]
[tex]7 \times 4 = 5 + 6 + 8 + n[/tex]
[tex]28 = 19 + n[/tex]
[tex]n = 28 - 19 = 9[/tex]
Jawaban:
*
value
5, 6 , 8 , n
*
the average = 7
*
7 = (5 + 6 + 8 + n)/4
7 x 4 = 5 + 6 + 8 + n
28 = 19 + n
n = 28 - 19
n = 9
8. If p = 2 is a solution of the equation 2p - hp +6=0, find the value of h. Hence, find the other solution for the equation.
remember p = 2
Then,
2p² - hp + 6 = 0
2(2)² - h(2) + 6 = 0
2(4) - 2h + 6 = 0
8 + 6 - 2h = 0
14 - 2h = 0
2h = 14
h = 7
so, we have solution h is a 7
9. The equation mx^2+nx+2n=8x+4 has the roots n and 1/m, m≠0. (a) Find the value of m and of n. (b) Hence, using the value of m and of n in (a),find the quadratic equation that has the roots 2m and - 1/n. .
Penjelasan dengan langkah-langkah:
It's known that:
f(x) → mx² + nx + 2n = 8x + 4
f(x) → mx² + nx - 8x + 2n - 4 = 0
f(x) → mx² + x(n-8) + (2n - 4), has roots:
x1 = n x2 = 1/m
it's also known that there is a formula for a quadratic equation f(x) → ax² + bx + c = 0 which has roots x1 and x2, so it can be applies:
x1 + x2 = -b/a
x1 × x2 = c/a
in the question:
a = m b = (n-8) c = (2n-4)
a. x1 + x2 = -b/a
n + 1/m = -((n-8)/m)
(nm+1)/m = -((n-8)/m)
nm+1 = -n+8
nm+n = 7 ..................... (1) 4m + 4 = 7 → m = ¾
x1 × x2 = c/a
n×1/m = (2n-4)/m
n = 2n-4
4 = n
b. x1 = 2m = 2.¾ = 3/2
x2 = -1/4
x1 + x2 = -b/a x1 × x2 = c/a
3/2 - ¼ = -b/a 3/2 × (-¼) = c/a
5/4 = -b/a -⅜ = c/a
10/8 = -b/a
b= -10
a = 8
c = -3
g(x) = 8x² - 10x - 3
10. for what value of 'a' the roots of the equation 2x²+6x+a=0 ,satisfy the condition (alpha/beta)+beta/alpha)<2 {where alpha and beta are the roots of the equation}
A/B + B/A < 2
( A^2 + B^2 ) / AB < 2
{ ( A + B )^2 - 2AB } / AB < 2
{ (-6/2)^2 -2(a/2) } / a/2 < 2
( 9 - a ) / (a/2) < 2
2(9-a) < 2a
18- 2a < 2a
18 - 2a - 2a < 0
18 -4a < 0
-4a < -18
a > 9/2
11. The equation 2y + 2x = 0, if the value of x is 3 so the value of y is…
Hopefully help you.
The answer is y = -3.
12. Find the x value of the equation 2(3x+4) = 10x
Jawab:
2(3x+4) = 10x
6x + 8 = 10x
6x - 10x = -8
-4x = -8
x = 2
Penjelasan dengan langkah-langkah:
Semoga menjawab like ny tolong
13. the value of x for equation 35x=5 is?
Penjelasan dengan langkah-langkah:
The value of x for equation :
35x = 5
x = 5/35
x = 1/7
so, the value of x is 1/7
14. 7. The curve with equation of my = n^(x) passes through the points (1, -12) and (-2, 3/16). Find the value of expression (m + n).
Penjelasan dengan langkah-langkah:
silahkan di klik gambarnya
Eksponen
my = n^x
(1,-12)
-12m = n
(-2,3/16)
3/16 m = n^-2
n/n^-2 = -12/(3/16) = -64
n^3 = -64 = (-4)^3
n = -4
-12m = -4
m = 1/3
m + n = 1/3 - 4 = -3 2/3 = -11/3
15. If the positive value of n which satisfies the equation 1/12 + 2/12 + 3/12 + ... + n/12 = 12n is substituted back into the equation, the value of 12n is... . (A) 143 (D) 1716 (B) 287 (E) 3444 (C) 430
Jawaban==>(E)
https://id-static.z-dn.net/files/dc9/cf8c9959791a096849e78d6c5bfda585.jpg
16. The value of b of the equation 4b+11=9 is ....
Jawaban:
4b+11=9
4b= 9-11
4b= -2
b= -2/4
b= -1/2 atau -0,5
so, 4b + 11 = 9
4(-1/2) + 11 = 9
-2 + 11 = 9
Jawaban:
b = - 1/2
Penjelasan dengan langkah-langkah:
4b + 11 = 9
4b = 9 - 11
4b = - 2
b = - 2/4
b = - 1/2
Maaf kalo salah
17. 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
18. 4/5 * N = 1, what is the value of N ?
4/5 * N = 1
=> (4/5) * (5/4) * N = 1 * (5/4)
=> N = 5/4
So, N = 5/4
19. QUESTION 94Triple FactorialN!!! = 29.160What is the N Value of the Triple Factorial?
Penyelesaian soal :
[tex] \rm N!!! = 29.160[/tex]
[tex] \rm 15!!! = 29.160[/tex]
[tex] \rm 15!!! = (15 \times 12 \times 9 \times 6 \times 3)[/tex]
[tex](180 \times 9 \times 6 \times 3)[/tex]
[tex](1.620 \times 6 \times 3)[/tex]
[tex]9.720 \times 3[/tex]
[tex]29.160[/tex]
Kesimpulan :Jadi, nilai N adalah 15
- Ȥαʋҽιɾα -
N!!! = 29.160
15!!! = 29.160
bukti Jawaban :
15 × 12 × 9 × 6 × 3 180 × 54 × 39.720 × 329.160[tex]\huge\blue\star{\huge{\sf{\color{skyblue}\underbrace {\overbrace{\colorbox{purple} {\color{pink}{©h3m1st®y1}}}}}}}{\huge\blue \star}[/tex]
20. Find the value of x of the following equation. x2+(x+2)2
Jawab:
(x + 2)² = (x + 2) (x + 2)
=x.x + x.2 + x.2 + 2.2
=x² + 2x + 2x + 4
=x² + 4x + 4
x² + x² + 4x + 4=2x² + 4x + 4
Penjelasan dengan langkah-langkah:
cari nlai x sendiri ya will aku juga bingung
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