Answer:
Option A. 
Step-by-step explanation:
we know that
A perfect square trinomial is equal to
In this problem we have
equate the equations and solve for a
so
therefore
the perfect square trinomial is equal to 
1. They equal because both coordinates point the same directions
2.both are the same because both point the same direction along with being worth the same
3. They equal horizontal lines
4. Doesn’t have one
Brainliest please
Answer:
+
The square root of 20 simplified is
And the square root of 80 simplified is
So it would look like +
Answer: Russia earned 13 gold medals, 11 silver medals and 9 bronze medals.
Step-by-step explanation:
Let x represent the number of gold medals that Russia earned.
Let y represent the number of silver medals that Russia earned.
Let z represent the number of bronze medals that Russia earned.
Russia earned a total of 33 medals. This means that
x + y + z = 33 - - - - - - - - - - - 1!
In the 2014 winter olympics in sochi russia earned 4 more gold medals than bronze. This means that
x = z + 4
The number of silver medals earned was 7 less than twice the number of bronze. This means that
y = 2z - 7
Substituting x = z + 4 and y = 2z - 7 into equation 1, it becomes
z + 4 + 2z - 7 + z = 33
4z - 3 = 33
4z = 33 + 3 = 36
z = 36/4 = 9
x = z + 4 = 9 + 4
x = 13
y = 2z - 7 = 2 × 9 - 7
y = 11
Search it up! There are lots of helpful and informative videos that can explain how to do it more than I can!
