Answer:
Gold
Step-by-step explanation:
<em>Casandra finds a treasure chest packed with metallic coins. The chest has a volume of 0.25 cubic meters. The coins have a combined mass of 4825 kg. Hoping to find gold, she calculates the density to determine the metal of the coins.</em>
<em>What kind of metal are the coins made of?</em>
<em>Bronze (8700 kg per cubic meter)</em>
<em>Silver (10500 kg per cubic meter)</em>
<em>Lead (11300 kg per cubic meter)</em>
<em>Gold (19300 kg per cubic meter)</em>
<em />
Density is mass per volume:
D = M / V
D = (4825 kg) / (0.25 m³)
D = 19,300 kg/m³
The coins must be made of gold.
Let speed of the boat in still water = x miles per hour
Let speed of the current = y miles per hour
When water and current both flow in same direction then effective speed will be sum of both speeds that is (x+y)
now plug the given values in formula speed=distance/time
we get equation:
(x+y)=160/8
or x+y=20...(i)
When water and current both flow in opposite direction then effective speed will be difference of both speeds that is (x-y)
now plug the given values in formula speed=distance/time
we get equation:
(x-y)=160/40
or x-y=4
or x=4+y...(ii)
plug value of x into (i)
4+y+y=20
4+2y=20
2y=16
y=8
plug value of y into (ii)
x=4+8=12
Hence final answer is given by:
Speed of the boat in still water = 12 miles per hour
Speed of the current = 8 miles per hour
Answer:
external conflict
Step-by-step explanation:
Answer:
Step-by-step explanation:
Let
x ----> the number of tickets
y ----> the price of tickets
we have the ordered pairs
(4,63) and (6,92)
step 1
<em>Find the slope of the linear equation</em>
The formula to calculate the slope between two points is equal to
substitute the values
step 2
Find the y-intercept or initial value of the linear equation
we know that
The linear equation in slope intercept form is equal to
where
m is the slope b is the y-intercept
we have
substitute
solve for b
In this context the y-intercept is a one charge fee for the ticket service
The equation is equal to
Answer:
2
Step-by-step explanation:
Tomas- 1/4 =4
harry-4 =2
