Solve the system by substitution.
y = –6x – 7
y = -7x

x=7

y=49

Step-by-step explanation:

-6x-7 = -7x because they both equal to y. -7 = -x, so x = 7. Plug into one of the equations and find y. y = -7(7). y = -49

the answer is b.

step-by-step explanation:

by the trigonometric ratio tangent, tangent equals opposite divided by adjacent.

therefore, tan(50) equals ac/3

multiply each side by 3 to get: ac=3tan(50)

the answer is b.

d) 30 units^2

area of rectangle = l × b

we know,

length = 10 unit

breadth = 3 unit

applying the formula,

= l × b

= 10 × 3

= 30 unit^2

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