3 years ago

Answer plsssssssssssssssss

Mathematics

2 answers:

matrenka [14]3 years ago

6 0

Answer:

i think the second answer

Step-by-step explanation:

a_sh-v [17]3 years ago

3 0

Answer: y=2/5x-3

Step-by-step explanation:

Since the b value in y=mx+b is the y-intercept we can rule out the 2 answers on the right as they have a y-intercept of -1

Now, let's test the point on one of the functions, take y=-4/5x-3 and substitute 5 for x and -1 for y

-1=4/5(5)-3

-1=4-3

-1=1

The left side does not equal the right side meaning the point does not pass through the function. Therefore, y=2/5x-3 is the correct answer

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A circle has the equation x2 + (y−7)2 = 121. What is the length of the diameter of the circle?

Reika [66]

Answer:

Step-by-step explanation:

The standard form for an equation of a circle is $(x-h)^2+(y-k)^2=r^2$ , where h is the x coordinate of the center of the circle, k is the y coordinate, and r is the radius of the circle. Therefore, the radius of this circle squared is 121, meaning that the radius of the circle is 11. Since the diameter of a circle is twice the radius, the radius of this circle is 22. Hope this helps!