Answer:
Step-by-step explanation:
- A circle's equation consist on the following expression:
, where r is the magnitude of the radio, and (a,b) are the coordenates of the center of the circle. - In this case, a=2 and b= - 3, because the circle is centered in (x,y)=(2, - 3).
- The radio, which is the distance between the center of the radio to any point in its border, equals r=2 (because of the scale of the graphic, in this case two squares of the grid equal 2 units, then r=2).
- Finally, using the previous information to replace in the equation , where the fact that r=2 and
was used.
Hello! To solve for x means to isolate x:
y = x^2 + 7
y - 7 = x^2
sqrt(y - 7) = x
Answer:
x = sqrt(y - 7)
Hope this helps!
Answer:
<u><em>26 2/3 inches</em></u>
Step-by-step explanation:
<em><u>P=4s</u></em>
P= 4 × 6 2/3
P= <em><u>26 2/3 inches</u></em>
Answer:
Step-by-step explanation:
7w+w-15=17
8w=17+15 add like terms
8w=32 divide
w=32/8=4
now check
7*4+4-15=17
28+4-15=17
17=17
