Answer:
21
Step-by-step explanation (note, the suggested way is not the shortest one):
all the details are in the attached picture.
Answer:
B. The approximate length of EF is 4.47 units, and the approximate perimeter of triangle EFG is 12.94 units.
Step-by-step explanation:
First step is to determine the length of EF, since that will give us 2 sides of the triangle (since EG = EF).
From the diagram, we can easily make a rectangle triangle by dropping a vertical line from vertex E, let's name Z the meeting point of that line with the segment GF. Then we have a rectangle triangle EZF with a height of 4 and a base of 2, of which EF is the hypotenuse. So...
EF² = 4² + 2² = 16 + 4 = 20
EF = √20 = 4.47
Now that we have EF, we also have EG:
EF = 4.47
EG = 4.47
GF = 4 (visible on the graph)
Perimeter = 4.47 + 4.47 + 4 = 12.94 units.
Answer:
A. 9π/2km
Step-by-step explanation:
the length of the arc is
s= angle in radians* radius
the angle in radians
135 = 3π/4
therefore length of arc
s= (3π/4)*6 = 9π/2km
There are 10 cards. They are numbered: 9,10,11,12,13,14,15,16,17,18. One card is randomly picked. What is P(prime number)? 20%,3
arlik [135]
So there are 10 numbers, and 3 of them are prime. Our prime numbers are 11, 13, and 17.
3/10 would be our fraction for this equation, and 3/10 is equal to 30%.
30% is your answer!
Answer:
The laser printer will have depreciated to $1487.5
Step-by-step explanation:
The cost price is $3400 and at a depreciation rate of 12% annually
then if it is used for 3 years, it would have depreciated
(3400 × 12 × 3)/100
= 34 × 12× 3
= $1912.5
Therefore the new price value will be
$3400 - $1912.5 = $1487.5