Answer:
x=1, y=4. (1, 4).
Step-by-step explanation:
y=4x
x+y=5
----------
x+4x=5
5x=5
x=5/5
x=1
y=4(1)=4
Answer:
9
-3x-12
9
+6x-7-9x-5
(Group liked terms)
9
+6x-9x-7-5
( subtract the numbers ) -7-5= -12
9
+6x-9x-12
( add similar elements ) 6x-9x=-3x
9
-3x-12
Step-by-step explanation:
Answer:
Step-by-step explanation:
Since the ladybug is
far from each edge of the rectangle, it follows that the length of the new rectangle is
and the width is
.
Recall a formula for the area of a rectangle:
, where
is a length and
is a width of the rectangle.
Substitute
and
into the formula:

Multiply the numbers:

Therefore, the required area is equal to
.
100/12=8⅓
multiply the other numbers by 8⅓ to get
15*8⅓=125
21*8⅓=175
the lengths are 100,125,175
Answer:
4:5
Step-by-step explanation:
Recall that 12 inches =1 foot
Therefore 4 feet = 12*4=48 inches

The ratio of 4 feet to 60 inches is 4:5
This ratio is in the reduced form, we cannot simplify further.