Answer:
24 cm^2
Step-by-step explanation:
The three sides are equal (SSS: side, side, side) so the triangles are congruent.
2x - 5y = 20
At the x-intercept, y=0 .
2x = 20 ==> x = 10
At the y-intercept, x=0.
-5y = 20 ==> y = -4
Answer:
e=12.5 or e=25/2
Step-by-step explanation:
Answer:
D. (x, y) → (-x, -y)
Step-by-step explanation:
A. (x,y) → (y,x) . . . . reflects across the line y=x
B. (x,y) → (y,-x) . . . . rotates 90° CCW
C. (x,y) → (-y,-x) . . . . reflects across the line y=-x
D. (x,y) → (-x,-y) . . . . rotates 180° about the origin
Answer:
36 laps Ronnie swim during practice .
Step-by-step explanation:
Let us assume that the laps that Ronnie swims be x .
Let us assume that the laps that Jackie swims be y .
As given
For every 3 laps that Jackie swims, Ronnie swims 4 laps.
i.e
3 × laps that Ronnie swims = 4 × laps that Jackie swims
3 × x = 4 × y
3x = 4y
Equation becomes
x + y = 63
Thus by using 3x = 4y .

Thus

4x + 3x = 63 × 4
7x = 252
x = 36
Put the value of x in the equation x + y = 63
36 + y = 63
y = 63 - 36
y = 27
Therefore the 36 laps Ronnie swim during practice .