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Helen [10]
3 years ago
10

I need help with this please ​

Mathematics
2 answers:
vova2212 [387]3 years ago
4 0
Yes it is on the x-axis because the y coordinate is 0 meaning it is on the x-axis line
ahrayia [7]3 years ago
3 0

Answer:

Yes because the y value is 0 thus the ordered pair is located on the x - axis

Step-by-step explanation:

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Given that 3^x = 4^y = 12^z, show that z = (xy)/(x+y).
irinina [24]
3^{x} = 4^{y} = 12^{z}
3^{x} = 4^{y} = (4 \cdot 3)^{z}
3^{x} = 4^{y} = 4^{z} \cdot 3^{z}

\text{Let a } = 3^{x} = 4^{y} = 4^{z} \cdot 3^{z}
log_3a = x
log_4a = y
log_{(4 \cdot 3)}a = z

Using change of base:
x = \frac{lna}{ln3}
y = \frac{lna}{ln4}
z = \frac{lna}{ln(4 \cdot 3)}

ln3 = \frac{lna}{x}
ln4 = \frac{lna}{y}
ln(4 \cdot 3) = \frac{lna}{z}

Now, ln(4 · 3) = ln(4) + ln(3)

\frac{lna}{z} = \frac{lna}{x} + \frac{lna}{y}
\frac{1}{z} = \frac{1}{x} + \frac{1}{y}
\frac{1}{z} = \frac{x + y}{xy}

\therefore z = \frac{xy}{x + y}
8 0
4 years ago
The coefficient of 6x is<br> 1<br> 6<br> Х
qwelly [4]

Answer:

6

Step-by-step explanation:

If a number and a variable were together in a term, the number would the the coefficient. The coefficient would multiply the variable.

In '6x', the number '6' is the coefficient. '6' would be multiplying 'x'.

The correct answer should be 6.  

6 0
4 years ago
Read 2 more answers
The product of two numbers is 20. If one of the numbers is 5/14, what is the other number
Gnesinka [82]

Answer:

56 is the other number

Step-by-step explanation:

let the first number be a

the other number is 5/14 from the question

a x 5/14 = 20

5a/14 = 20

5a = 14  x 20 = 280

a = 280/5 = 56

5 0
3 years ago
Give the values of a,b, and c from the standard form of the equation (2x+1)(x-2)=0
Arte-miy333 [17]

Answer:

a=2,b=-3 and c=-2

Step-by-step explanation:

(2x+1)(x-2)=0

2x²-4x+x-2=0

2x²-3x-2=0

Comparing it with the standard form of quadratic equation ax²+bx+c=0 we get

a=2,b=-3 and c=-2

5 0
3 years ago
Read 2 more answers
0.005 write as a fraction
kirill115 [55]
0.005 would be 5/1000 because how I know if it is 10ths or 100ths or 1000ths I count all the number on the right side of the decimal, hoped this could help!
5 0
4 years ago
Read 2 more answers
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