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7nadin3 [17]
3 years ago
15

2x+5y=46 5x+3y=58 what are the x and y values

Mathematics
1 answer:
nadya68 [22]3 years ago
3 0
(X,y)=(8,6)
Step by step explanation:
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A giant scoop, operated by a crane, is in the shape of a hemisphere of radius 21 inches. The scoop is used to transfer molten st
eduard

Answer:

31.5 in

Step-by-step explanation:

  • Volume of a hemisphere = (2/3)\pir³
    (where r is the radius)
  • Volume of a cylinder = \pir²h
    (where r is the radius and h is the height)
  • radius r = (1/2) diameter

First, find the volume of the scoop using the volume of a hemisphere formula with r = 21:

Volume = (2/3)\pi x 21³ = 6174\pi in³

Now equate the found volume of the scoop to the equation of the volume of a cylinder with r = 14, and solve for h:

                                            \pi14²h = 6174\pi

                                            196\pih = 6174\pi

 Divide both sides by \pi:        196h = 6174

Divide both sides by 196:          h = 31.5

Therefore, the height of the molten steel in the storage tank is 31.5 in

3 0
2 years ago
A shuttle launch depends on three key devices that may fail independently of each other with probabilities 0.01, 0.02, and 0.02,
worty [1.4K]

Answer:

0.950796

Step-by-step explanation:

Given that a shuttle launch depends on three key devices that may fail independently of each other with probabilities 0.01, 0.02, and 0.02, respectively.

Required probability =  the probability for the shuttle to be launched on time

= Probability that all three do not fail

Since each key device is independent of the other

we have

prob that all three do not fail = (1-0.01)(1-0.02)(1-0.02)\\=0.99*0.98*0.98\\=0.950796

6 0
2 years ago
HELP ASAP!! Justify the answer to the equation by explaining the steps you took.
babymother [125]

Step-by-step explanation:

Given: 2x-6=5x+18

step 2 : the subtraction property of equality

step 4: the addition propert of equality

step 5: the division propert of equality

3 0
2 years ago
Evaluate each expression.
Greeley [361]

Answer:

a 16

b30

Step-by-step explanation:

you said c is 5 so 11 +5 and you said b was 2 so 15 times 2 Is 30

8 0
3 years ago
Help me with this I will give you all my points???​
Rasek [7]

Answer:

1. Yes 2. No 3. Yes 4. No

Step-by-step explanation: 1 is a function because none of the x values repeat, 2 isn't a function because in the x coordinates, -2 repeats, 3 is a function because if you were to draw a (vertical) line through each point, none of them have two points on one line, 4 is a function because none of the x coordinates point to more than one y coordinate

6 0
3 years ago
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