First u have to draw a dollar sign ($). Then the amount of dollars (ex. ..23..) then the amount of coins , (ex: .45). Here's the full example, $23.45. :-)
Answer: 1 is your answer
Step-by-step explanation:
Answer:
theres 60 minutes in an hour
Step-by-step explanation:
Answer:
a)$15.95
b) 8kg
Step-by-step explanation:
a)Approach this question by finding how much does it cost for 1g
So,
$2.1/50=$0.042per gram
then, multiple 380 to get the cost of sweets for 380 g
$0.042/gram*380gram=$15.96(Note: the gram cancel out each other)
Which is $15.95 as the question requested
b)This question stated that 3/4 of the metal has 15 kg
So, in order to find the total mass of metal we invert the 3/4 fraction
e.g 4/3*15=20kg
now we have the total mass we can find the mass for 2/5 of the metal
2/5*20kg=8kg
The rock lands on the graound when h(x) = 0:
Dividing both sides by -3 gives
Taking the square root of both sides gives
![x-4=\sqrt[]{\frac{79}{3}}](https://tex.z-dn.net/?f=x-4%3D%5Csqrt%5B%5D%7B%5Cfrac%7B79%7D%7B3%7D%7D)
Finally, adding 4 to both sides gives
![x=\sqrt[]{\frac{79}{3}}+4](https://tex.z-dn.net/?f=x%3D%5Csqrt%5B%5D%7B%5Cfrac%7B79%7D%7B3%7D%7D%2B4)
converting to a decimal form gives
Hence, the rock lands on the ground after 9.1 s.
