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Pani-rosa [81]
3 years ago
15

Lines are perpendicular when the slopes are _____

Mathematics
1 answer:
zhenek [66]3 years ago
3 0
... negative reciprocals of each other.

___
Lines are perpendicular when the product of their slopes is -1 (or when one is vertical and the other is horizontal).
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If the volume of the polyhedron is 147π in^3, the value of x is ___ cm.
hram777 [196]

Answer:

x = 6.44 cm

Step-by-step explanation:

Given that,

Volume, V = 147π in³

Height, h = 9 cm = 3.54 in

We need to find the value of x. The formula of this polyhedron is given by :

V=\pi r^2 h\\\\r=\sqrt{\dfrac{V}{\pi h}} \\\\r=\sqrt{\dfrac{147\pi }{\pi \times 3.54}} \\\\r=6.44\ in

or

r = 16.35 cm

So, the value of x is equal to 6.44 cm.

4 0
3 years ago
Identify the area of a regular pentagon with side length 15 cm rounded to the nearest tenth. NEED HELP ASAP
n200080 [17]

Answer:

I believe the answer to be 387.11

Step-by-step explanation:

A=1/4√5(5+2√5) a°2=1/4√5•(5+2•√5)•15°2=387.10742 cm°2

Rounded= 387.11

8 0
2 years ago
A 54-ounce bottle of fruit juice costs $6.by the unit rates rounded to the nearest cent
Xelga [282]

Answer:

The unit rate is 0.11 $/ounce

Step-by-step explanation:

we know that

To find the unit rates divide the total cost by the total volume

so

(6/54)=0.11 $/ounce

5 0
3 years ago
How can you solve n-6m=8 for n
disa [49]
To solve for n you have to get n on one side of the equation by itself.
n-6m=8
take -6m and add to both sides. so the side that has n evens out to 0. then you have
n=6m+8
it is this way because you can only add like terms. This should be all you need to do. 
Hope this helps
6 0
3 years ago
Read 2 more answers
Please help me. I will make you the brainliest!!
Blizzard [7]
If you want to find the probability, just make a fraction of the number of times that outcome happened over the total amount of tests:

Open: 3/50= 0.06 or 6%
Closed: 7/50=0.14 or 14%
Side: 40/50= 0.8 or 80%

Hope this helps!
8 0
3 years ago
Read 2 more answers
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