The sum of their speeds is 380 miles per hour. The difference of their speeds is 30 miles per hour. Then the faster plane is traveling at
.. (380 +30)/2 = 205 miles per hour
The slower plane's speed is 30 miles per hour less, so it is traveling at
.. 205 mph -30 mph = 175 miles per hour
Answer:
28x=y
Step-by-step explanation:
28x=y because 14x-y=-14 plus y on both sides=
14x=-14y then add 14 to both sides=
28x=y
Direct variation is a relation that has the form
y = kx
where k is the constant of proportionality.
If you are told that a relation is a direct proportion, and you are given one data point, you can find k. The you can write the equation of the direct relation.
Here is an example.
The price of gasoline follows a direct variation.
John bought 5 gallons of gas and paid $15.
a) Write an equation for the relation.
b) Using the relation you found, how much do 13.8 gallons cost?
Solution:
Since the relation is a direct variation, it follows the general equation of a direct variation:
y = kx
We are given one data point, 5 gallons cost $15.
We plug in 5 for x and 15 for y and we find k.
y = kx
15 = k * 5
k = 3
Now that we know that k = 3, we rewrite the relation using our value of k.
y = 3x
This is the answer to part a).
Part b)
We use our relation, y = 3x, and we plug in 13.8 into x and find y.
y = 3x
y = 3 * 13.8
y = 41.4
The price of 15 gallons of gas is $41.40.
Answer:
-2
Step-by-step explanation:
Answer:
Option C is correct.
Step-by-step explanation:
Given: A rhombus. m∠1 = 40°
To find: m∠2
We know that Rhombus is a parallelogram with all equal sides.
⇒ Opposite sides of the Rhombus are parallel.
Then Diagonal act as a traversal for parallel sides.
So, m∠2 = m∠1 ( Alternate Interior Angles are equal )
m∠2 = 40°
Therefore, Option C is correct.
