7th grade math 10 points
1.) jill began to solve an equation.
which expression below shows the next step jill needs to take?
jill’s solution:
y divided by (-2)=4.5
y divided by (-2)*(-2)
a.
4.5 • (–2)
b.
4.5 ÷ (–2)
c.
4.5 + (–2)
d.
4.5 – (–2)

Can someone factor this fully? my friend and i have two different answers and i would like to know if either of them is right. you in advance. a^2 - b^2 + 25 + 10a

5. which description does not guarantee that a quadrilateral is a squar ajo is a parallelogram with perpendicular diagonals 0% has all sides congruent and all angles congruent o has all right angles and has all sides congruent 10% is both a rectangle and a rhombus 30%

The party planning committee has to determine the number of tables needed for an upcoming event. if a square table can fit 8 people and a round table can fit 6 people, the equation 150 = 8x + 6y represents the number of each type of table needed for 150 people.