Step-by-step explanation:
step 1. so ABC is a triangle.
step 2. interior angles of a triangle add up to 180°
step 3. <A + <B + <C = 180°
step 4. 54 + <B + 74 = 180°
step 5. <B = 52°.
Answer:
Step-by-step explanation:
Solve the system:
8x−4y=20
4x−8y=4
Reduce the first equation by dividing every term by -2:
-4x + 2y = -10
and then combine this result with the second equation:
4x−8y=4
-4x + 2y = -10
--------------------
-6y = -6, and so y = 1.
According to the first equation, if y = 1, then 4x - 8 = 4, or x = 3.
Then x = 3 and y = 1.
So, finally, x - y = 3 - 1 = 2
Answer:
Usually it means to solve it. Sometimes they give you values to substitute in for variables (letters) in the math sentence/equation/expression.
Does that make sense?
Step-by-step explanation:
Answer:
it would be a
Step-by-step explanation:
Y= 5x
x+y= 245
X+ (5X) = 245
6X = 245
divide both sides by six and their is your answer :)
good luck! and message me if you have any more questions and you want to learn and not cheat you way out of it
