3 years ago

Let x= -1, y= -2 and z = 3 evaluate the following expression x/5y - 2z

Mathematics

2 answers:

RideAnS [48]3 years ago

8 0

Just substitute the values: -1/-10-6 -> -1/-16 -> 1/16.

pochemuha3 years ago

7 0

Answer:

since you already got an answer can i have free starter points?

Step-by-step explanation:

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If 8(a + b) = 48, what is the value of a + b?

Cloud [144]

Answer:

$8(a + b) = 48 \\ \\ a + b = \frac{48}{8} \\ \\ a + b = 6$

I hope I helped you^_^

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3 years ago

If 3x−y=12, what is the value of <br>8x/2y?

Ulleksa [173]

Answer:

3x-y=12

3x-12=y

to find value of

8x/2y

8x/2(3x-12)

8x/6x-24

8x/6x-8x/24

4/3-x/3

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Step-by-step explanation:

4 0

2 years ago

A cylinder is filled with 900 liters of water.find the area of its base if height of cylinder is 20dm.

Lisa [10]

The formula of the volume of a cylinder:

$V=\pi r^2H\\\\where:\\\\r-a\ radius\\H-a\ height\\\pi r^2-an\ area\ of\ base$

We have:

$V=900\ liters\\1L=1dm^3\ therefore\ V=900L=900dm^3$

and

$H=20\ dm$

substitute:

$\pi r^2\cdot20=900\ \ \ |:20\\\\\pi r^2=45\ dm^2$

Answer: The area of a base of the cylinder is equal 45 dm².

5 0

3 years ago

What is the answer to ax+z =aw-y if you are solving for a

inysia [295]

Ax + z = aw - y....subtract aw from both sides
ax - aw + z = -y....subtract z from both sides
ax - aw = -y - z....factor out a on the left side
a(x - w) = -y - z...divide both sides by (x-w)
a = (-y - z) / (x - w)

7 0

3 years ago

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There 10 people inside the house then the house caught on fire but only 2/3 escaped how much is still in the building?

slega [8]

Answer:

6.67 is the awnser or 6.6666666666

Step-by-step explanation:

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3 years ago

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