x + y = 5..........(I)
or,x=5-y
-2x + y = 2..........(II)
replacing x=5-y in equation (II),.we get ...
-2(5-y)+y=2
-10+2y+y=2
or,3y=12
y=4
now.,,
putting y=4 in equation (I)
x+4=5
x=5-4
x=1
hence x=1
With the b2+b- 12 your gonna want to do this
b2+b-12
b2+4b-3b-12
which is the sum product
after doing that you wanna common the factors from the two pairs. Which is b2+4b-3b-12 then you do you parentheses around b(b+4)-3(b+4) just like that after you do that then you rewrite it in factored form b(b+4)-3(b+4) you then want to rewrite it to this (b-3)(b+4) after that your solution will be (b-3)(b+4) for the first one.
Answer:
4320 degrees
Step-by-step explanation:
If interior angles are 3960 degrees then there are 24 sides. If polygon is regular, size of each exterior angle is 15 degrees.
A polygon has as many pairs of interior and exterior as number of its sides. Further each pair of exterior and interior add up to
180 degrees.
Sum of all the exterior angles of any polygon is
360 degrees
As sum of all the interior angles of the polygon is
3960 degrees
Sum of all pairs of exterior and interior angles is
3960 degrees + 360degrees = 4320 degrees
Answer:
The number of coins to make 6440 mm diameter is 230
Step-by-step explanation:
The diameter of the coin is 28mm
Number of coins to have 6440 mm will be
6440/28
= 230
Answer:✖️=3
✖️=4
Step-by-step explanation:
-(2✖️+1)=7 (2✖️+1)=7
-2✖️-1=7. 2✖️=6
-2✖️=8 ✖️=3
-✖️=4
✖️=4
