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lakkis [162]
3 years ago
8

2ln(x+4)*1/-2*ln(2x+5 write as a single logarithm

Mathematics
1 answer:
kifflom [539]3 years ago
6 0
Well from combining I got ㏑(x²+10x+21)/-2
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Does (2, -1) make this a true statement? Why or why not?<br> 3x + 2y = 4
kvv77 [185]

Answer: Yes

Step-by-step explanation:

So a coordinate pair is always set up (x,y) so you plug the x term in the coordinate pair into the x in the equation and the y term in for the y. 3×2 + 2×-1. Multiply them together and you end up with 4.

3 0
3 years ago
Al sumar y/o restar números decimales, siempre se debe aplicar la norma de los signos. * 1 punto FALSO VERDADERO
Luden [163]

Answer:

La norma de los signos es para el producto de números reales, y la norma es la siguiente.

(+)*(+) = (+)

(+)*(-) = (-)

(-)*(+) = (-)

(-)*(-) = (+)

Es decir, el producto de dos números de mismo signo es siempre positivo

El producto de dos números de distinto signo es siempre negativo.

Particularmente, para la suma esta norma no funciona (pues no está definida para la suma)

Pero en casos como:

5 - (-4)  

(esto sería: "la diferencia entre cinco y menos cuatro")

notar que podemos reescribir esto como:

5 + (-1)*(-4)

Ahora podemos aplicar la norma de los signos:

5 + 4 = 9

Donde aplicamos la norma de los signos,  

Podemos concluir que, si bien es una regla que aplica al producto, siempre la tenemos que tener en cuenta en cualquier operación que hagamos.

Por lo podemos concluir que la respuesta correcta es verdadero.

7 0
2 years ago
Can someone please help me ?
Alex

Answer:

  B.  π(3/2)²h

  (27/4)π cubic inches

Step-by-step explanation:

A. The formula for the volume of a cylinder is ...

  V = πr²h

The radius (r) is half the diameter, so for a diameter of 3 inches, the radius is 3/2 inches. When this is put into the formula, the volume is ...

  V = π(3/2)²h . . . . . . matches choice B

__

B. When h=3, the volume evaluates to ...

  V = π(9/4)(3) = (27/4)π . . . . cubic inches

8 0
3 years ago
Estimate the tip on a $10.75 check using a tip rate of %20. Please explain how to do thid in an easy way. 
Marina CMI [18]
To find 10% divide by 10 so 1.07 or round to 1.08 if you like then double to 
get 20% so 2.14 or 2.16 so if the bill is 10.75 you would pay 12.89 with a 20% tip
6 0
3 years ago
Read 2 more answers
The area A of a rectangle with a width of x-1 is given by A=2x^4+x - 7x + 4. Find an expression for the
Tcecarenko [31]
-1/2,4







No explanation
6 0
3 years ago
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