The first choice if ()2 means to the power of two if not then it is none of them.
Step-by-step explanation:
When
z = 2
Then
5/z
= 5 / 2
= 2.5
Hope it will help :)
Answer:
77.4 el valor del ipod con el 40% de descuento
vStep-by-step explanion
40%/ 100%= 0.4
0.4x129= 51.6( la cantidad que nos van a descontar)
129-51.6=77 .4 es el valor del ipod con el 40% de descuento
Answer:
20*x
Step-by-step explanation:
alright so lets start with how many cents are in a dollar
100 cents per dollar
we need to find 20 pounds so we can use an equation i made
lets say it's 22c per pound
20*x=$
lets try plugging in 22
20*.22=$4.20
Answer: x = 780
Step-by-step explanation: Well <u><em>percent</em></u> means <em>over 100</em> so we can set up an equation for this problem by reading it from left to right.
So we know that <u><em>10%</em></u> means <em>10/100</em>, <u><em>of</em></u> means times, <em><u>what</u></em> <em><u>number</u></em> means <em>x</em>, <u><em>is</em></u> means <em>equals</em>, and <em><u>12</u></em> means 12.
Notice that <em>10/100</em> can be reduced to 1/10.
So rewriting our problem we have <em>X/10 = 78</em>.
To get rid of the fraction, we multiply both sides of the equation by 10 and we have <em>x = 780</em>. So, 10% of 780 is 78.
Now let's check our answer back in the original problem to see if it makes sense.
We have <em>10% of 780 is 78</em>. Well we know that 100% of of 780 would be 780 so 10% of 780 should be alot less than 780 so 78 seems to make sense.
Image provided showing my work.