first off, let's notice the parabola is a vertical one, therefore the squared variable is the x, and the parabola is opening upwards, meaning the coefficient of x² is positive.

let's notice the vertex, or U-turn, is at (-2, 2)

$\bf ~~~~~~\textit{parabola vertex form} \\\\ \begin{array}{llll} \boxed{y=a(x- h)^2+ k}\\\\ x=a(y- k)^2+ h \end{array} \qquad\qquad vertex~~(\stackrel{-2}{ h},\stackrel{2}{ k}) \\\\\\ y=+1[x-(-2)]^2+2\implies y=(x+2)^2+2$

6 0

3 years ago

the ratio of boys to girls at the beach clean up was 7:8 if there are 42 boys how many girls are there

Len [333]

48 girls are there. Given that there is a ratio of boys to girls of 7:8. Then divide 42 boys by 7 boys which equals 6. After, multiply 6 by 8 girls equals 48 girls.

4 0

3 years ago

Help please! Solve the system of equations.

Lelu [443]

2 * x = 2 * 3 = 6

9 * y = 9 * 2 = 18

18 + 6 = 24

x = 3

y = 2

7 0

3 years ago

78+22=22+78<br> (16+4)+11=(11+4)+16<br> (12+8)+9=(9+8)+12

Ksju [112]

344444444444444444444444

4 0

3 years ago