What's the solution of the system?

7x+5y=19

-7x-2y=-16

What would be the remainder for 15 : 4 = 3?

Together, Dulcina and Hannah have 78 refrigerator magnets. Hannah has 2 times as many refrigerator magnets as Dulcina. How many refrigerator magnets are in Hannah's collection? How many refrigerator magnets are in Dulcina's collection?

If a pair of perpendicular lines are rotated, which is true? A) Rotating perpendicular lines result in parallel lines. Eliminate B) The lines remain perpendicular only if rotated 180°. C) The lines remain perpendicular only if rotated 360°.

The vertices of a triangle are A (0, 5), B (-2, - 4), and C (0, 3). Find the new vertices. Use the rule (x, y) → (x - 2, y + 5) to translate each vertex. Enter each vertex as an ordered pair.

Evaluate the expression for b = 5. 7.4b

How to find the mean of percentages

Suppose f (x) = x^2 and g (x) = (2x) ^2. Which statement best compares te graph of g (x) with the graph of f (x) ? A. The graph of g (x) is horizontally compressed by a factor of 2. B. The graph of g (x) is horizontally stretched by a factor of 2. C.

Solve for x: 5x-2x=7x+2x-24

Lydia buys 5 pounds of apples and 3 pounds of bananas for a total of $8.50. Ari buys 3 pounds of apples and 2 pounds of bananas for a total of $5.25. This system pound of apples, and y is the cost per pound of bananas.

What is the value of b if 9 + b = - 8