2)
perpendicular lines because the slopes are opposite reciprocals
~iln~
( /^ω^)/♪♪
Answer:
x = 13/8
y = -45/8
Step-by-step explanation:
9x + y = 9
3x + 3y = -12
Divide the second equation by 3
x+y = -4
Multiply this by -1
-x -y = 4
Add this to the first equation to eliminate y
9x + y = 9
-x -y = 4
-----------------
8x +0 = 13
Divide by 8
8x/8 = 13/8
x = 13/8
Now find y
x+y = -4
13/8 +y = -4
Subtract 13/8 from each side
13/8 -13/8 +y = -4-13/8
y = -32/8 - 13/8
y = -45/8
Lets look at the info we have:-
1 pound of cheese = $6.75
2.6 pounds of cheese
MULTIPLY TO FIND D ANSWER:-
$6.75 × 2.6 = $17.55
2.6 pounds of cheese cost $17.55.
CHECK OUR WORK:-
17.55 ÷ 2.6 = 6.75
we were RIGHT!!
So, 2.6 pounds of cheese costs $17.55.
Hope I helped ya!! xDc
Answer:
Height after 5 seconds is <em>215 ft</em>
Step-by-step explanation:
Given that:
The initial velocity of object which is projected upwards is 123 ft/sec.
Height of the object, <em>h</em> after time <em>t </em> in seconds, is given as:
Here, <em>t </em>will always be positive, so 
and 
will also be positive.
But coefficient of is negative, that means something is subtracted from the positive term .
To find:
Height of object after 5 seconds.
Solution:
Given that 
seconds.
Let us put the value in the given relation of 
and 
:
So, height after 5 seconds is <em>215 ft</em>.
