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3 years ago

Is the quotient of (-5) ➗ (-7) a rational number? Explain your answer in two or more sentences.

Mathematics

2 answers:

ValentinkaMS [17]3 years ago

3 0

-5/-7 = 5/7 = 0.71428577142857... The decimal form of the fraction never ends, so 5/7 is not a rational number

Vlada [557]3 years ago

3 0

0.71428571 Hope things is the answer your looking for

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What is the standard form of y-8=2(x+3)

Zinaida [17]

Either:
y-8=2(x+3)
y-8=2x+6
-2x+y=14

or

y-8=2(x+3)
y=2x+14

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3 years ago

The cost of a High Definition television now averages $700, but the cost is decreasing about 15% per year. In how many years wil

Roman55 [17]

Answer: 7.7 years

Step-by-step explanation:

Given

The cost of HD TV is $700 and it is decreasing at the rate of 15% per year

After one year it becomes

$\Rightarrow 700-700\times 15\%\\\Rightarrow 700(1-0.15)$

after 2 year it becomes

$\Rightarrow 700(1-0.15)-700(1-0.15)\times 15\%\\\Rightarrow 700(1-0.15)(1-0.15)\\\Rightarrow 700(1-0.15)^2$

Suppose, after x years it becomes $200

$\Rightarrow 200=700(1-0.15)^x\\\\\Rightarrow \dfrac{2}{7}=0.85^x\\\\\text{Taking log both sides}\\\\\Rightarrow x=\dfrac{\ln (\frac{2}{7})}{\ln (0.85)}\\\\\Rightarrow x=7.7\ \text{years}$

Thus, it takes 7.7 years for the cost to come under $200.

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3 years ago

Evaluate the expression when m = 2.

dalvyx [7]

11 - 3m (replace m with 2)
$11-3*2$
11 - 6
5

The answer is A. 5

6 0

3 years ago

Read 2 more answers

Assume that y varies inversely with x. if y = 16 when x = 1/2, find y when x=32

MissTica

y varies inversely with x.

Example:

If we multiply x by 2 we need to divide y by 2 too.

So,

If y = 16 and x = 1/2, find y when x = 32

Lets see, from 1/2 to 32 e need to multiply 1/2 by 64, right? So let's divide 16 by 64.

16/64 = 8/32 = 4/16 = 2/8 = 1/4

So we can say that:

If y = 16 when x = 1/2, y = 1/4 when x = 32.

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3 years ago

{(-3,1),(0,1),(3,1)}<br> Domain=<br> Range=<br> Function?

Alecsey [184]

Answer:

Domain : { -3, 0, 3}

Range : { 1 , 1 , 1 }

Function : These set of ordered pairs are functions as every x-value has only one y-value associated with it.

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3 years ago