Answer:
Step-by-step explanation:
1.A
2.C
1.C
2.A
1.B
2.21.45
3.A
I tried my best
Answer:
x + y + z = 180 (this is the first equation)
w + z = 180 (this is the second equation)
Now, rewrite the second equation as z = 180 - w and substitute that for z in the first equation:
x + y + (180 - w) = 180
x + y - w = 0
x + y = w
Step-by-step explanation:
Letter A is the correct answer because you can obviously exit out c and d, but yo get a good phrase you might as well have some parentheses to make this work because without it, would be confusing :)
:D
Let x be our first number and y be our second number.
The product of the two numbers will be xy.
Now let x be the one that increases by 50% and y be the one that decreases by 50%.
We can represent that by 1.5x and 0.5y, respectively. If you are confused by that, let me explain. If something increases by 50%, it becomes 1.5 times larger. So for x, that means 1.5x.
And if something decreases by 50%, it becomes 0.5 times smaller. So for y, that means 0.5y.
Therefore we have 1.5x and 0.5y. And the product of those two:
(1.5x) * (0.5y) = (3/2)x * (1/2)y = (3/4)xy
So our product is now (3/4)xy.
Comparing this answer to our original product of xy, we see that it is now only 3/4 as much or 75% of what it originally was.
Therefore, the product will DECREASE by 25%.
*DROPS MIC
Answer:
The quadrilateral is not a parallelogram
Step-by-step explanation:
we know that
In a parallelogram opposite sides are parallel and congruent
Find the length of the sides of the quadrilateral
step 1
Find the distance QR
the formula to calculate the distance between two points is equal to
we have
Q(-10,-2), R(1,-1)
substitute
step 2
Find the distance TS
the formula to calculate the distance between two points is equal to
we have
T(-11,-8), S(1,-7)
substitute
we have that
QR and TS are opposite sides
In a parallelogram opposite sides are congruent but in this problem
therefore
The quadrilateral is not a parallelogram
