Answer:9:20
Step-by-step explanation:
Answer:
D) 8.667 mph
Step-by-step explanation:
Given: Distance= 6.5 miles
Times= 45 minutes
First, convert the time into hours as we need to find speed in the unit of mph.
We know, 1 hour= 60 minutes
∴ Time= 
Now, find the speed of John´s bike
Speed= 
⇒ Speed= 
∴ Speed of John´s bike is 8.667 mph
Answer:
2010
Step-by-step explanation:
If the numbers are x and y, you have ...
x +y = 97
x -y = 37
Adding these two equations gives ...
2x = 134
x = 67
y = 67 -37 = 30
The product is then ...
xy = (67)(30) = 2010
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<em>Alternate solution</em>
There is no need to find the actual numbers. We can go directly to their product.
(x+y)² = x² +2xy +y² = 97² = 9409
(x-y)² = x² -2xy +y² = 37² = 1369
Subtracting the second equation from the first gives ...
4xy = 9409 -1369 = 8040
xy = 8040/4 = 2010
Of course the difference of squares can be factored, so we could compute ...
(97² -37²)/4 = (97 +37)(97 -37)/4 = 134(60)/4 = 134(15) = 2010
$17.
To find this, set up a simple fraction like equation. Using the is over of technique, this equation is formed.
x / 20 = 85 / 100
Multiply 20 with 85 before dividing by 100 to get the final answer of 17.
Hope this helps!
Use the formula S = xr.
Note: I am using x in place of theta since there is no theta symbol on my keyboard.
We want to find S, the arc of the given circle.
S = (1 rad)(17 units/rad)
Notice that both rad cancel out.
Note: rad is radians for short.
S = 17 units
