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3 years ago

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Lionel plays trumpet for a minimum of 45 minutes on the days that he practices. If x is the number of days that lionel practices

and y is the total number of hours he spends practicing, which inequality represents this situation?

1 answer:

IRINA_888 [86]3 years ago

5 0

If I am not mistaken the inequality would be 45x is greater than or equal to y since the minimum would be 45 minutes a day.

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Answer:

a)6

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Step-by-step explanation:

a)Given that,

u=12

a= -6

s=9

We know that,

v^2=u^2+2as

or, v^2=(12)^2+2×(-6)×9

or,v^2=144-108

or,v^2=36

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b)If ,v^2=u^2+2as

then, u^2+2as=v^2

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or, s=v^2-u^2/2a

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How to add and subtract positive and negative fractions

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A camera manufacturer spends $2,250 each day for overhead expenses plus $6 per camera for labor and materials. The cameras sell

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enot [183]

a. 'x' represents half page advertisement and 'y' represents full page advertisement.

System of equation is given by 42x + 86y = 1192 , x + y =20.

b. Number of full page advertisement Kathryn purchase is equals to 8.

c. Number of half page advertisement Kathryn purchase is equals to 12.

<h3>What is system of equation?</h3>

" System of equation is defined as the finite set of equations for which we find a common solution."

According to the question,

Cost of half page advertisement = $42

Cost of full page advertisement = $86

Number of advertisement Kathryn could purchase = 20

Total budget of Kathryn to purchase advertisement = $1192

'x' represents half page advertisement

'y' represents full page advertisement

As per the situation given system of equation we have,

42x + 86y = 1192 ______(1)

x + y = 20

x = 20 - y _____(2)

Substitute the value of 'x' from system of equation (2) in (1) we get,

$42( 20 -y) +86y =1192\\\\\implies 840 - 42y +86y =1192\\\\\implies 44y = 1192-840\\\\\implies y = \frac{352}{44}\\ \\\implies y =8$

Substitute the value of y in (2) to get 'x' ,

$x=20-8$

= 12

Hence,

a. 'x' represents half page advertisement and 'y' represents full page advertisement.

System of equation is given by 42x + 86y = 1192 , x + y =20.

b. Number of full page advertisement Kathryn purchase is equals to 8.

c. Number of half page advertisement Kathryn purchase is equals to 12.

Learn more about system of equation here

brainly.com/question/13997560

#SPJ3

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