Answer:
10
Step-by-step explanation:
So what we are doing in this question is simple substitution
So x = 2, y = 4
7x - y
So lets split it up first
7x
7 * (2)
We plugged in 2 for x
This is equal to 14
So the equation is looking like
14 - y
Now lets do the second part
- y
- (4)
We plugged in 4 for y
So no our equation looks like
14 - 4
= 10
The answers is 404 because it's in the middle
I cha use a 10 fact because I can round to the nearest 10 which is 20 for 15 and 10 for 8
Answer:
b = 33 miles
Step-by-step explanation:
The illustration forms a right angled triangle. The opposite side of the triangle is where we are looking for . The adjacent side is the radius 4000 miles.
5280 ft = 1 mile
735 ft = ? miles
cross multiply
735/5280
miles = 0.13920454545 miles
The hypotenuse side is the height of the building + 4000 miles = 0.140 + 4000 = 4000.14 miles
using Pythagoras theorem
c² = a² + b²
c = 4000.14
a = 4000
4000.14² = 4000² + b²
b² = 4000.14² - 4000²
b² = 16001120.0196 - 16000000
b² = 1120.0196
b = √1120.0196
b = 33.4666938911
b = 33 miles
