Answer:
see below
Step-by-step explanation: 5 20 15 28
3x + y = 23
3x – 2y = 8
O I should add, and the Xs will be eliminated. 3x + 3x = 6x NOT eliminated
O I should add, and the Ys will be eliminated. y + -2y = -y NOT eliminated
O I should subtract, and the Xs will be eliminated. 3x - 3x = 0x X is eliminated
O I should subtract, and the Ys will be eliminated. y - -2y = y NOT eliminated
Answer:
x = 25500
Step-by-step explanation:
Answer:
<h2>radius = 8</h2>
Step-by-step explanation:
NOTE ================================
EQUATION OF A CIRCLE with center (a , b) and radius r :
(x - a)² + (y-b)² = r²
……………………………………………
x² − 14x + y² = 15
⇔ x² − 2×7x + 7² − 7² + y² = 15
⇔ x² − 2×7x + 49 − 49 + y² = 15
⇔ (x - 7)² − 49 + y² = 15
⇔ (x - 7)² + y² = 15 + 49
⇔ (x - 7)² + y² = 64
⇔ (x - 7)² + y² = 8²
Then radius of the circle is 8.
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The answer is 3/5
it’s 6/10 simplified to 3/5
hope this helps!