If 7 is added to twice a number and this sum is multiplied by 4 the result is the same as if the number is multiplied by 5 and 10 is added to the product. what is the number?

-6

Step-by-step explanation:

Lets assume a number be "x".

As given, lets put in an expression:

=   ---  (first)

= ----- (second)

As known both the expression are same.

⇒ =

Opening the parenthesis and distributing the number 4 with 2x and 7.

⇒

subtracting both side by 28 and 5x

⇒

cross multiplying

∴ x=

x= -6

On subtituting the value of x on the expression.

=

We get, -20=-20, which is equal.

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%

50

step-by-step explanation: