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Sonbull [250]
3 years ago
5

WILL GIVE BRAINLIEST!!!!!!! A boy had 20 cents. He bought x pencils for 3 cents each. If y equals the number of pennies left, wr

ite an equation showing the dependence of y on x. What is the domain of the function?But it says that x is a whole number for the domain. PLS HELP.
Mathematics
1 answer:
kumpel [21]3 years ago
5 0

Answer:

Hey there!!

The total number of cents - 20

Cost for each pencil - 3 cents

Number of pencils bought - ' x '

y = number of pennies left

What is the domain ?

Show how y is dependent on x ..

Let's get this into an equation :

... The total cost for x pencils bought = 3x

... Number of pennies left = 20 - 3x

... y = number of pennies left

... y = 20 - 3x

Notice : If the x value changes, the y value changes too

... If x = 1 , then , y = 17; If x = 2 , then , y = 14

Hence, we could say y is dependent upon x

Domain = ?

... Remember - The total number of pennies = 20 ; hence, the total cost cannot go above 20 cents.

Hence, we will have to work with inequalities

The equation :

... 20 ≥ 3x

Divide 3 on both sides

20 / 3 ≥ x

x ≥ 6.667

Let's take this as 6

Hence , the domain will be :

D : { 1 , 2 , 3 , 4 , 5 , 6 }

Hope my answer helps!

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The answer is 5.69 .
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The accompanying line chart shows the major spending categories of the federal budget over the last 50 years.​ (Payments to indi
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3 years ago
Please help!! Math homework
Hitman42 [59]
<h3><u>Answer:</u></h3>
  • x = 66°
  • y = 48°
<h3><u>Step-by-step explanation:</u></h3>

<u>Since this is an isosceles triangle, the base angles must be the same. Hence, </u><u>x = 66°.</u>

<u>Since we have found x, we can find y by using the 180-angle method.</u>

  • => y + 66 + 66 = 180
  • => y + 132 = 180
  • => y = 180 - 132
  • => y = 48°
<h3><u>Conclusion:</u></h3>

Therefore, the answers are:

  • x = 66°
  • y = 48°

Hoped this helped.

BrainiacUser1357

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There is a correlation between higher education and greater degrees of both income and job stability. What is one downside of co
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Hi there!!! :D

There is a correlation between higher education and greater degrees of both income and job stability. What is one downside of continuing education thatmight cause someone to choose not to seek a higher level of education despite the benefits?

a. If you have too much income, you will reach your goals too quickly. 

b. Most employers feel that pursuing a college degree shows a lack of decisiveness or conviction compared to diving straight into the workforce. 

c. Higher education can be expensive, and most students who seek degrees must accept some burden of debt. 

d. Getting a degree in one subject can disqualify you from getting a job in another field.

Answer: D

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