The first answer 14a is wrong it is going to -5+-2-2a
-5+(-2)+(-2a)
=(2a)+(-5+-2)
=-2a+-7
0.4x30 +3= 15
700/15= 46...
46x30=1380
46x15=690
700-690=10
10/0.4=25
25+1380=1405(ans)
Answer:
first stage=420km
second stage=360Km
Step-by-step explanation:
Hi!
To solve the problem follow the steps below
1. We will call X to the first stage and Y to the second stage.
2. Raise the equations taking into account the following
the sum of both stages is 780km
X+Y=780km
the first stage has 60km more than the second
Y+60=X
X-Y=60
3. Add the equations found above
X + Y =780
X - Y =60
------------------------
2X=840
Solving for X=840/2=420Km
use one of the equations obtained in step 2, to get the value of Y
Y+60=X
X-60=Y
420-60=Y
Y=360km
Answer:
3.16
Step-by-step explanation:
Answer:
over 36000
Step-by-step explanation:
It is said that over 36000 tiles or stones were used to make the Washington monument. Step-by-step explanation: The Washington monument stands tall at 555 feet and 5 1/8 inches with a width of 55 feet . This monument is built by using three different stones.