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3 years ago

Suppose that x and y vary inversely and that y = 5 when x = 1. What is y when x = 15?

Mathematics

1 answer:

LiRa [457]3 years ago

7 0

Answer:

Y=1/3

Step-by-step explanation:

X=k/y

So let's make k the subject of formula

k=xy

x=1,y=5

So let's substitute

k=1×5

k=5

So we are to determine the value for y when x is 15

So let's solve

Y=k/x

Y=5/15

Y=1/3

Y=0.333333~0.3

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May I know this answer

kap26 [50]

I think it’s C but I may be wrong

3 0

3 years ago

Algebraic models grade 12 math college please write the answers without explaining thank you.

Zinaida [17]

From the problem :

$6^4\times6^{-5}$

In multiplying expressions with the same bases, the exponent will be added accordingly.

For example :

$a^m\times a^n=a^{m+n}$

the exponent of a are m and n, and the product will be a raised to the sum of m and n.

Applying this to the problem, we have :

$6^4\times6^{-5}=6^{4-5}=6^{-1}$

The answer is d. 6^-1

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1 year ago

Given the lengths of two sides of a triangle, find the range for the length of the third side (between what two numbers should t

frozen [14]

Answer:

The length of the third side of given triangle lies between 6.5 and 19.9.

Step-by-step explanation:

The law of cosine is as follows

$c^{2} =a^{2}+b^{2}+2abcos\alpha$ ---------------1

⇒ a and b are the given sides of the triangle and c is the third side, and $\alpha$ is the angle between a and b .

In equation 1 , the maximum and minimum values of $cos\alpha$ are 1 and -1.

so the value of c lies in between

⇒ $\sqrt{a^{2}+b^{2}-2ab }$ and $\sqrt{a^{2}+b^{2}+2ab }$ = $|a-b| and |a+b|$

Given a=13.2 and b=6.7 so the the side lies in between |13.2-6.7| and |13.2+6.7|

so the third side lies between 6.5 and 19.9

3 0

3 years ago

Give a decimal number that is less than 23.7 and greater than 23.7

Makovka662 [10]

I think you are asking for two numbers, so you just have to look at the decimals.

23.7

We can use an infinite amount of numbers here, but to make it simple you can just take away 0.01 or add 0.01.

23.69
23.71

These are funny answers as well because they both round to 23.7 and meet the requirements.

3 0

3 years ago

Read 2 more answers

Briainliest Simplify 15√90/√125 options 9√2 18√5 18√2/5 27√2/5

nekit [7.7K]

Answer:

9√2

Step-by-step explanation:

simplify the radical by breaking the radicand up into a product of known factors, assuming positive real numbers.

Exact form:9√2

Decimal form: 12.72792206

3 0

2 years ago