$x-how\ many\ student\ tickets\ were\ sold\\ \\3\cdot x+5\cdot (400-x)=1360\\ \\3x+2000-5x=1360\\ \\-2x=-640\ \ \ \Rightarrow\ \ \ \ x=320\\ \\Ans.\ 320\ tickets\ for\ students$

6 0

3 years ago

If g(x)=7x²−4x−3 and h(x)=5x²−12x, find (h∘g)(1)<br><br><br>FIRST BEST ANSWER BRAINLIEST

AURORKA [14]

Answer: See below

Step-by-step explanation:

$h\:\circ \:g=h\left(g\left(x\right)\right)$

$=5\left(7x^2-4x-3\right)^2-12\left(7x^2-4x-3\right)$

$=5\left(7x^2-4x-3\right)\left(7x^2-4x-3\right)-12\left(7x^2-4x-3\right)$

$=245x^4-280x^3-130x^2+120x+45-84x^2+48x+36$

Simplify:

$=245x^4-280x^3-214x^2+168x+81$

6 0

3 years ago

Draw a picture to show how to find12+37

Karolina [17]

So i drew 12 circles and 37 circles
And i got 49 total:D
i hope this helps and sorry that the pic is wierd:(

7 0

3 years ago