2 years ago

What is an equation of the line that passes through the point (-1,-7) and is perpendicular to the line x+y=6x

Mathematics

1 answer:

julia-pushkina [17]2 years ago

7 0

Answer: y = -1/5x - 36/5

Hope this is right with the weird fractions. Work in pic:

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Find the surface area of the cylinder in terms of pi. 9cm and 19cm

Natali [406]

Answer:

Surface area of cylinder= 211.5π

Step-by-step explanation:

Given,

Height of cylinder = 19cm

Diameter of cylinder = 9cm

i.e Radius of cylinder = diameter/2 = 9/2 = 4.5cm

Surface area of cylinder = 2πrh + 2πr²

Plug corresponding values of r and h in surface are formula.

Surface area of cylinder = 2πrh + 2πr² = 2π*4.5*19 + 2π*4.5²

Surface area of cylinder = 171π+40.5π = 211.5π

Hence we get surface area of cylinder= 211.5π

3 0

3 years ago

If d = m/v, what is the equation when solved for v? **please explain**

inn [45]

V= m/d. When you get questions asking about density/mass/volume draw a triangle just like in the picture i have attached and with your finger cover up the one you are looking for. So to find the equation for volume you cover up volume and you are left with mass divided by density.