Answer:
Step-by-step explanation:
y = x - 5 ← x - 5 can be subbed for y in the second equation, as shown:
3x - y = 7 → 3x - (x - 5) = 7, or 2x + 5 = 7, or 2x = 2, or x = 1.
Subbing 1 for x in the first equation, we get y = 1 - 5 = -4,
and so the solution is (1, -4).
Second system:
2x + 2y = 12
3x + y = 2
Let's eliminate y first. Mult. the 2nd equation by -2, obtaining:
2x + 2y = 12
-6x - 2y = -4
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-4x = 8, and so x = -2. Subbing -2 for x in the 2nd equation, we get:
3(-2) + y = 2, or -6 + y = 2, or y = 8
Then the solution to the second system of equations is (-2, 8).
Answer
A(-2,3)
Step-by-step explanation:
-4 6 are the actual coords, and then we do 1/2 so divide it by 2 -4/2 6/2 and u get the answer A
Answer:
The formula for calculating a z-score is is z = (x-μ)/σ, where x is the raw score, μ is the population mean, and σ is the population standard deviation. As the formula shows, the z-score is simply the raw score minus the population mean, divided by the population standard deviation.
Step-by-step explanation:
Hope his helps!
Yes it is the same as having no slope.
Answer:
The distance between Shawna's Home and Rochester is 228 mi and takes her 6 hr to make the drive.
Step-by-step explanation:
<u>Known Data</u>
Final distance is the same for both , but for Terrence , due he didn't arrive for 56 mi
Initial distance is the same for both
Shawna's Velocity , and time
Terrence's Velocity , and time, as he starts 2hr later
<u>Formula</u>
, for both cases
<u>Equation System</u>
Shawna: or (1)
Terrence: , , and finally (2)
By solving this equation system (1) and (2), using any method, we obtain and .