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deff fn [24]
3 years ago
11

Can someone help with these two questions?

Mathematics
2 answers:
Effectus [21]3 years ago
5 0

Answer:

4. x = 7

5. A

Step-by-step explanation:

you can't use a calculator ?

4.

x² = 49

x = 7

5.

sqrt(4) = 2

triple root (8) = 2

sqrt(16) = 4

only sqrt(2) is a never-ending sequence of digits without any repeating pattern after the decimal point. and that is the meaning of irrational numbers. they can never be described by an expression a/b, where a and b are integer numbers.

Vlad1618 [11]3 years ago
4 0
Answer is going to be x=2
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Explain the different ways it is possible to add two rational numbers and get a negative number.
Eduardwww [97]

<u>Answer:</u>

both numbers are negative

negative number is greater than the positive number

<u>Step-by-step explanation:</u>

In order to add two rational numbers and get a negative value, one of two scenarios should occur:

<u>1- both numbers are negative.</u>

2- negative number is greater than the positive number

3 0
2 years ago
Cual es el resultado de (7.006×10⁴¹)×(5.09×10²²)<br><br>​
Murljashka [212]

Answer:

El resultado de (7.006×10⁴¹)×(5.09×10²²)=3.566054*10⁶⁴

Step-by-step explanation:

La notación científica es una manera rápida de representar un número utilizando potencias de base diez.

Los números se escriben como:

a*10ⁿ

donde:  

  • a es un número real mayor o igual que 1 y menor que 10.
  • n es un número entero, que recibe el nombre de exponente u orden de magnitud. Representa el número de veces que se desplaza la coma. Siempre es un número entero, positivo si se desplaza a la izquierda, negativo si se desplaza a la derecha.

Para realizar la multiplicación con notación científica, debes multiplicar las magnitudes afectadas por las potencias de 10 y, por separado, multiplicar las potencias de 10, recordando la propiedad:

  • Si dos bases son iguales (el mismo número o variable), y son los factores de una multiplicación, ambas bases quedan en una sola y sus exponentes son sumados: xᵃ*xᵇ= xᵃ⁺ᵇ

En este caso:

(7.006×10⁴¹)×(5.09×10²²)=(7.006*5.09)*(10⁴¹*10²²)=35.66054*10⁴¹⁺²²= 35.66054*10⁶³

Siguiendo el formato a*10ⁿ, debes ajustar el valor de la base a de manera que sea un número real mayor que 1 y menor que 10. Entonces, se mueve la coma decimal hacia la izquierda tantos espacios hasta llegar a la derecha del primer dígito.  Y se escribe la base 10, al cual el exponente se suma la cantidad de espacios que se mueve la coma, que es un número positivo porque la coma se desplaza a la izquierda.

Entonces 35.66054*10⁶³= 3.566054*10⁶⁴

<u><em>El resultado de (7.006×10⁴¹)×(5.09×10²²)=3.566054*10⁶⁴</em></u>

4 0
3 years ago
If sin x = 1/4<br> and pi &lt; x &lt; 3pi/2 , find tan x exactly
arlik [135]

Answer:

\sin(x)  =  \frac{1}{4}  \\  { \sin }^{2} x =  \frac{1}{16}  \\  { \cos } x =  \sqrt{1 -  { \sin }^{2}x }  \\  \cos(x)  =  \sqrt{1 -  \frac{1}{16} }  \\  \cos(x)  =  \sqrt{ \frac{15}{16} }  \\  \tan(x)  =  \frac{ \sin(x) }{ \cos(x) }  \\  \tan(x)  =  \frac{ \frac{1}{4} }{ \sqrt{ \frac{15}{16} } }  \\  \tan(x)  = 0.258

5 0
3 years ago
~hi~ write each rate as a unite rate ,
Rom4ik [11]

#1) 0.5 inches per hour

#2) $9.20 per toy

#3) 35 miles per hour

#4) 8 oz. in a cup

Hope this is right, and helps you!

8 0
3 years ago
I need help now! Someone
Elenna [48]
I’m working on the same thing as well
8 0
3 years ago
Read 2 more answers
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