Answer:
5
Step-by-step explanation:
Formula of the circle
(x-a)² +(y-b)² = r²,
where r is a radius, (a,b) - coordinates of the center.
So,
x² + y² = 49
(x-0)² + (y-0)² = 49.
Center of this circle has coordinates (0,0).
x² + y² = 7²
r = 7
Answer is C.7.
Answer:
The answer is 64.
Step-by-step explanation:
Lets say the top row is <em>x</em> and the bottom row is <em>y</em>.
Since when <em>x</em> is 13 <em>y</em> is 104 and when <em>x</em> is 14 <em>y</em> is 112 that means the <em>y </em>value goes up by 8 every time.
when x=3: 16+8=24
when x=4: 24+8=32
when x=5: 32+8=40
when x=6: 40+8=48
when x=7: 48+8=56
when x=8: 56+8=64
Hope this helps you!!!!
Answer:
Slope is undefined
Step-by-step explanation:
Slope is calculated by 
so now you put the points (-10,4) and (-10,8) into that.
Since both x values are the same you can tell that the line is a vertial line meaning the slope is undefined.
Answer:
x = 7 / 2
Step-by-step explanation:
5(2x - 9) + 3 = -7 ---------- subtract 3 from both sides
5(2x - 9) + 3 - 3 = -7 - 3
5(2x - 9) = -10 ------ divide both side by 5
2x - 9 = -2 ---------- add 9 to both sides
2x - 9 + 9 = -2 + 9
2x = 7
x = 7 / 2
