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2 years ago

To remember the order of the quadrants, draw the

Mathematics

1 answer:

Afina-wow [57]2 years ago

7 0

Answer:

You can just write Quadrant I: All values are positive, Quadrant II: Sine is positive, Quadrant III: Tangent is positive, and Quadrant IV: Cosine is positive.

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(2x10^3)x(4x10^2) how do you do it help!

Sergio039 [100]

Answer:

800000x^3

Step-by-step explanation:

6 0

3 years ago

R (-3,1) and S (-1,3) are points on a circle. If RS is a diameter, find the equation of the circle.

ELEN [110]

Answer:

$\sf (x+2)^2+(y-2)^2=2$

Step-by-step explanation:

If RS is the diameter of the circle, then the midpoint of RS will be the center of the circle.

$\sf midpoint=\left(\dfrac{x_s-x_r}{2}+x_r,\dfrac{y_s-y_r}{2}+y_r \right)$

$\sf =\left(\dfrac{-1-(-3)}{2}+(-3),\dfrac{3-1}{2}+1 \right)$

$\sf =(-2, 2)$

Equation of a circle: $\sf (x-h)^2+(y-k)^2=r^2$

(where (h, k) is the center and r is the radius)

Substituting found center (-2, 2) into the equation of a circle:

$\sf \implies (x-(-2))^2+(y-2)^2=r^2$

$\sf \implies (x+2)^2+(y-2)^2=r^2$

To find $\sf r^2$ , simply substitute one of the points into the equation and solve:

$\sf \implies (-3+2)^2+(1-2)^2=r^2$

$\sf \implies 1+1=r^2$

$\sf \implies r^2=2$

Therefore, the equation of the circle is:

$\sf (x+2)^2+(y-2)^2=2$

4 0

2 years ago

the resendez family pays a monthy base charge for their electricity plus a charge for each kilowatt-hour used. In april, their e

IRISSAK [1]

Answer:

about $0.20 per kilowatt-hour. i hope this helps

Step-by-step explanation:

6 0

2 years ago

Any help on this please ?

dlinn [17]

Answer:

(0,-5), I believe.

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

Factor the algebraic expression.<br> 72 +63

Ira Lisetskai [31]

Answer:135

Step-by-step explanation:72 + 63 =135

5 0

2 years ago