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pishuonlain [190]
2 years ago
5

If y varies inversely as x and y = 4 when x = 12, find the constant of variation

Mathematics
1 answer:
Artyom0805 [142]2 years ago
3 0
X is not equal to the answer so y is incorrect
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Determine if the side lengths could form a triangle. Use an inequality to prove your answer.
podryga [215]

9514 1404 393

Answer:

  a) no

  b) yes

  c) maybe (no)

Step-by-step explanation:

There are two versions of the triangle inequality. One requires ...

  a + b > c

for any triple of side measures a, b, c.

The other allows ...

  a + b ≥ c

which admits "triangles" that have zero height and look like line segments.

Most questions asking "do these lengths form a triangle" are concerned with the "greater than" case, and disallow the "or equal to" case.

__

a)

  16+21=37\ngtr39\qquad\text{not a triangle}

b)

  27+34=61>58\qquad\text{could be a triangle}

c)

  9+29=38\ge38\qquad\text{could be a triangle if "equal to" is allowed}

7 0
2 years ago
selim is ordering concrete spheres to place as barriers in the city park. the spheres cost $2 per square foot, and selim can spe
hoa [83]

The maximum diameter of the spheres he can purchase is  1. 78 ft. Option C

<h3>How to determine the diameter</h3>

The formula for area of a sphere is expressed as;

Area = 4 πr²

If Selim paid $2 per square foot and have a maximum of $20 per square

The area he can purchase is;

= $20/$2

= 10$

Substitute the value into the formula

10 = 4πr²

10 = 4 × 3. 142 ×  r²

10 = 12. 568r²

Make 'r²' the subject

r² = 10/ 12. 568

r² = 0. 79

Find the square root of both sides

r = √0. 79

r = 0. 89

But diameter = 2(radius)

Diameter = 2 × 0. 89 = 1. 78 ft

Thus, the maximum diameter of the spheres he can purchase is  1. 78 ft. Option C

Learn more about spheres here:

brainly.com/question/10171109

#SPJ1

8 0
1 year ago
How many edges does a square pyramid have?
Paul [167]

Answer:

8

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
A vending machine accepts​ nickels, dimes, and quarters. Exact change is needed to make a purchase. How many ways can a person w
arlik [135]
If he uses 1 quarter, he has 40 cent left to make.He can do that in two ways, by using 2 dimes andall four nickels, or all 3 dimes snd 2 nickels.That's 2 ways.
If he uses both quarters, he has 15 cent left to make.He can do that in two ways by using 1 dime and 1 nickel,or no dimes and 3 nickels.That's 2 more ways.    So there are four ways to make 65 cents.
7 0
3 years ago
Read 2 more answers
e position of a submarine relative to the water surface was −32 1/4 feet. A downward navigational maneuver increased its depth b
swat32

Answer:-47 3/4


Step-by-step explanation:

The correct answer would be -47 3/4  


You would use the equation


-32 1/4 - 15 1/2 = -47 3/4


to find your answer

5 0
3 years ago
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