The coordinates of a point on a coordinate grid are (−3, 7). the point is reflected across the x-axis to obtain a new point. the coordinates of the reflected point
1. (−3, −7)
2. (3, −7)
3. (−3, 7)
4. (3, 7)

"1. (−3, −7)"

Step-by-step explanation:

If we have a point (x,y),

1. Reflection across x axis makes it (x, -y)

2. Reflection across y axis makes it (-x, y)

So we see x-axis reflection simply changes sign of y coordinate & y-axis reflection changes the sign of x coordinate (keeping x and y same, respectively).

Thus, the question asks to reflect (-3,7) about x-axis, so we change sign of y coordinate, 7 becomes -7. THus, the point becomes:

(-3,-7)

Answer choice #1 is right.

blue marble is 15 times out of 50 = 15/50 reduces to 3/10

landing on tails is 24 out of 50 = 24/50 reduces to 12/25

to find the probability of both multiply together:

3/10 x 12/25 = 3 x 12 / 10 x 25 = 36/250

if you multiplied the numerator and denominator by 10 you get 360/2500.

the answer is 360/2500

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing im pretty sure that is the right answer

step-by-step explanation: