Answer:
1 : 1
Step-by-step explanation:
First, find the unit rate of each.
Carwash : 34/4 = 8.5
So, he gets $8.5 per hour at the carwash.
Restaurant : 51/6 = 8.5
So, he gets $8.5 per hour at the resrestaurant.
The ratio is 8.5 to 8.5
Simplify it:
1:1
Hope this helps!!
Answer:
Step-by-step explanation:
Plug the first equation into the second
y=-2(-15)-5
=30-5
=25
4 -3 5 6
-6 -24 162 -1002
-----------------------------------
4 -27 167 -996
4x^2 - 27x + 167 remainder - 996
Steps are simple:
1- Write the standards of conversion
2- Write the value you want to convert
3- Use cross multiplication to get the converted value
Examples:
i- Say we want to convert 890 cm to meters.
We know that 1 cm = 0.01 meters
Now, we will write the number we want to convert and use cross multiplication as follows:
1 cm = 0.01 meters
890 cm = ?? meters
converted value = (890*0.01) / 1 = 8.9 meters
ii- Say we want to convert 568 kg to grams.
We know that 1 kg = 1000 grams
Now, we will write the number we want to convert and use cross multiplication as follows:
1 kg = 1000 gram
568 kg = ?? grams
converted value = (568*1000) / 1 = 568000 grams
Hope this helps :)
A half-life of 9 minutes corresponds to a decay factor <em>k</em> such that
Then the time it takes for the substance to decay from 610 g to 124 g is time <em>t </em>such that
Solve for <em>t</em> :
so it takes about 20.7 min for the 610 g sample to decay down to 124 g.
