1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Elan Coil [88]
3 years ago
11

Inequality in real world.

Mathematics
1 answer:
Oxana [17]3 years ago
3 0
Solving real-world problems that involve inequalities is very much like solving problems that involve equations.

Example 1

In order to get a bonus this month, Leon must sell at least 120 newspaper subscriptions. He sold 85 subscriptions in the first three weeks of the month. How many subscriptions must Leon sell in the last week of the month?

Solution

Let x = the number of subscriptions Leon sells in the last week of the month. The total number of subscriptions for the month must be greater than 120, so we write :

85 + x ≥ 120.

We solve the inequality by subtracting 85 from both sides: x ≥ 35.

Leon must sell 35 or more subscriptions in the last week to get his bonus.

Check

To check the answer, we see that 85 + 35 = 120. If he sells 35 or more subscriptions, the total number of subscriptions he sells that month will be 120 or more. The answer checks out.

Example 2

Virenas Scout troop is trying to raise at least $650 this spring. How many boxes of cookies must they sell at $4.50 per box in order to reach their goal?

Solution

Let x = number of boxes sold. Then the inequality describing this problem is 4.50 ≥ 650.

We solve the inequality by dividing both sides by 4.50: x ≥ 144.44.

We round up the answer to 145 since only whole boxes can be sold.

Virenas troop must sell at least 145 boxes.

Check

If we multiply 145 by $4.50 we obtain $652.50, so if Virenas troop sells more than 145 boxes they will raise more than $650. But if they sell 144 boxes, they will only raise $648,

which is not enough. So they must indeed sell at least 145 boxes. The answer checks out.

You might be interested in
WRITE Math How are a common denominator and a common<br> multiple alike and different?
Vesnalui [34]
That are different because that are not!!!!! the same ?
8 0
3 years ago
Read 2 more answers
What is the equation of this line?<br><br> A. y=3/2x<br> B. y=-3/2x<br> C. y=-2/3x<br> D. y=2/3x
liberstina [14]

Answer:

it got to be C

Step-by-step explanation:

don't get mad if it not please I'm just trying to help

8 0
2 years ago
A proposed law before it is confirmed through the House, Senate and Presidential process is:
MariettaO [177]

Answer:

A bill

Step-by-step explanation:

A bill becomes a law. Search up a bill becomes a law schoolhouse rock.

3 0
3 years ago
Read 2 more answers
Ella’s test grades in her history class are 89, 94, 82, 84, and 98. What score must Ella make on her next test to have a mean te
aksik [14]
Mean is same as average

to find average
add up terms
divided that sum by the number of terms you have
example

mean of x,y,z
x+y+z
3 terms
(x+y+z)/3=mean



so
represent next test score as x
89+94+82+84+98+x
count how many terms ther are (6 terms)

mean is 90
(89+94+82+84+98+x)/6=90
add the like terms
(447+x)/6=90
multiply both sides by 6 to clear fraction
447+x=540
subtract 447 from both sides
x=93

she needs a score of 93 on next test
8 0
3 years ago
Read 2 more answers
Someone help <br> NO LINK IM SO FR NO LINKS
JulsSmile [24]

Answer:

I think iit's no consistent

Step-by-step explanation:

no consistent because there is no multiplying happening and no consistent adding happening

6 0
2 years ago
Other questions:
  • Alice purchased a house using a fixed rate mortgage. The annual interest rate is 5.6% compounded monthly for 30 years. The mortg
    13·1 answer
  • How do I answer this question
    9·1 answer
  • You are 200 yards from a river. Rather than walking directly to the river, you walk 400 yards along a straight path to the river
    8·1 answer
  • 25.1° what is the complementary angle
    13·1 answer
  • Solve 2x + 5 = 12 <br> please help !
    12·2 answers
  • A particular style of sunglasses costs the retailer $70 $⁢70 per pair. At what price should the retailer mark them so he can sel
    14·1 answer
  • What’s the volume of this container? HELP ASAP
    11·2 answers
  • Which set of ordered pairs represent y as a function of x?
    8·2 answers
  • In a set of ordered pairs, the y values repeated while the x values did not repeat.
    6·1 answer
  • Express -36/78 as a rational number with numerator 6:
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!