Hello from MrBillDoesMath!
Answer:
3
Discussion:
Let the number be "n",
2n + 15 = 21 => subtract 15 from both sides
2n = 21 - 15 = 6 => divide both sides by 2
n = 6/2 = 3
Check: Start with 3. Double it (gives 6), add 15 to it ( 6 + 15) which gives 21/
Thank you,
MrB
Answer:
Undefined/infinity
Step-by-step explanation:
(1,1) and (1.2) lie on a vertical line x = 1
Slope of a vertical line is undefined.. approaches infinity
By creating two right triangles (one for depression and one for elevation) and by using 700 as the adjacent side, you can use tangents to find the opposite sides and add them together.
Tan(45) = opposite side/700 or 700tan(45) = opposite side (elevation).
This of course equals 700.
Then do the same for the depression.
Tan(32) = opposite side/700 or 700tan(32) = opposite side (elevation).
Which equals 437.4.
Adding the two together and you get the height of the cell tower at 1137.4ft
Answer:
18 minutes
Step-by-step explanation:
Given distance (D) and average speed (S) then time (T) is calculated as
T = 
= 
= 
hour
hour = × 60 min = 3 × 6 = 18 mins
Step-by-step explanation:
Here the deposited amount is considered as 'P'
The rate of interest is 'R'
The time is 'T'
P=$ 1000
R= 3%
T= 4 years
The simple interest can be calculated by,
Interest = (P x R x T) / 100
= ( 1000 x 3 x 4 ) / 100
= ( 12000) / 100
= $120
The simple interest for 4 years is $120
Total amount= P + Interest
= 1000 + 120
= $1120
So after 4 years the account will have $1120 .
