Answer:
4
Step-by-step explanation:
use the Pythagoras' theorem
formula for an ABC triangle( right angled)
AB is height
BC is hypotenuse
CA is length
= 
+ 
in your case
AB is 7
BC is 8
CA is unknown so we write x
=
+
64=49+
64-49=
15=
=x
3.87=x
4=x
Answer:
2ft
Step-by-step explanation:
If you have a 3x3 you have a 9ft Sq paper. To have five feet left the removed square must be 4 square feet. 2x2 = 4 therefore 2ft per side
Answer:
x=-4
y=1
Step-by-step explanation:
For the given system of equations,
2.5x-3y=-13.....eqn(1)
3.25x-y=-14.....eqn(2)
We first make y the subject of eqn (2)
This implies that,
y=3.25x+14.....eqn(3)
We substitute eqn (3) into eqn (1)
2.5x-3(3.25x+14)=-13
2.5x-9.75x-42=-13
-42+13=9.75x-2.5x
-29=7.25x
Dividing through by 7.25, we obtain
x=-4
We now put the value of x into eqn (2)
3.25(-4)-y=-14
This implies that,
-13+14=y
y=1
You need to find the common primes...
18=2*3*3 and 72=2*2*2*3*3 so they have 2*3*3 in common and
2*3*3=18
So 18 is the greatest common factor.
Answer:
43.96 or C
Step-by-step explanation:
c=(pi)(d)
pi --> 3.14
d --> diameter (in your case 14.)
c=3.14*14
c= 43.96
Both formulas work, 2(pi)r and (pi)(d)
But, if they give you the diameter then use (pi)(d).
If they give you the radius then use 2(pi)r
