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3 years ago

Is -9 a rational or irrational number

Mathematics

1 answer:

daser333 [38]3 years ago

7 0

-9 is a rattional number because it is an integer and it can be squared.

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4/7 times a number minus 8.5 is no more than 11.5

mote1985 [20]

Good luck finding this answer 211

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3 years ago

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Below are the lengths (in minutes) of phone calls made on an 800 line to a business on one day. Fine the five-number summary for

RoseWind [281]

Answer :19

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Step-by-step explanation:

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3 years ago

In a standard deck of cards, what is the probability of drawing a red card or a face card? answer choices are in the form of a p

Orlov [11]

In a standard set of cards, the probability of drawing a red card or a face card is 73%

<h3>What is the probability?</h3>

In a standard deck of cards, there are 26 red cards. In that same deck, there will be 12 face cards.

The probability of picking either one is:

= (Number of face cards + Number of red cards) / Number of total cards

Solving gives:

= (12 + 26) / 52

= 38 / 52

= 73%

Find out more on probability at brainly.com/question/15812320

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2 years ago

What is the correct answer?

gavmur [86]

7x²+3y+5+9x²+11y-2

=16x²+14y+3

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3 years ago

A music store sold a total of 27 used trumpets and clarinets in one month. Trumpets cost $149 and clarinets cost $99. If total s

Annette [7]

Answer:

The number of clarinets musical store sold was 16. and number of trumpets musical store sold was 11.

Step-by-step explanation:

Let the musical store sells 'x' number of trumpets and 'y' number of clarinets.

According to question,

Total number of trumpets and clarinets sold is 27 that is

$x+y=27$ ..............(1)

Also given Trumpets cost $149 and clarinets cost $99.

then the shop sold x trumpets for $149x and sold y clarinets for $99y and total sales were $3233.

thus, $149x+99y=3233$ ...........(2)

Solving for equation (1) and (2),

Multiply equation (1) by 149 , we get

(1) ⇒ $149x+149y=4023$ ........(3)

Now, subtract equation (3) from equation (2) , we get

$149x+149y-(149x+99y)=4023-3233$

$\Rightarrow 149x+149y-149x-99y=790$

$\Rightarrow 149y-99y=790$

$\Rightarrow 50y =790$

$\Rightarrow y =\frac{790}{50}=15.8$

Thus, number of clarinets musical store sold was 15.8 but since clarinets are to be in whole number rounding off to the nearest integer 16.

and put y = 16 in (1) , we get

$x+y=27 \Rightarrow x+16=27 \Rightarrow x=27-16=11$

Thus, number of trumpets musical store sold was 11.

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3 years ago