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
Furkat [3]
2 years ago
6

The cost, C. of producing coolers, x, is modeled by the equation C = 0.005x2 - 0.3x + 17. How many coolers are

Mathematics
1 answer:
melamori03 [73]2 years ago
3 0

Answer:

66 coolers

Step-by-step explanation:

C = 0.005x² - 0.3x + 17

When C = $19

19 = 0.005x² - 0.3x + 17

19 - 17 = 0.005x² - 0.3x

2 = 0.005x² - 0.3x

0.005x² - 0.3x - 2 = 0

x = -b ± √b² - 4ac / 2a

= -(-0.3) ± √-0.3² - 4*0.005*-2 / 2*0.005

= 0.3 ± √ 0.09 - (-0.04) / 0.01

= 0.3 ± √ 0.09 + 0.04 / 0.01

= 0.3 ± √ 0.13 / 0.01

= 0.3/0.01 ± √0.13/0.01

= 30 ± 0.36/0.01

x = 30 ± 36

x = 30 + 36 or 30 - 36

x = 66 or -6

Number of coolers can not be negative

Therefore, number of coolers produced when the cost is $19

is 66 coolers

You might be interested in
State if the triangles are similar. If so, how do you know they are
DIA [1.3K]

Step-by-step explanation:

they're similar since 36 % 9 = 0 and 24 % 6 = 0 (they leave no remainder)

6 0
2 years ago
What is the domain and range of the relation shown in the table?
seropon [69]

Domain is the set of x values and range is the set of y values

So

Domain:  {-1, 0, 4}

Range: { 2, 3, 4, 7}

Answer is the first one

4 0
3 years ago
Read 2 more answers
The perimeter of a rectangular pool is 180 yes. The length is 10yds more than the width. Find the length and the width of the po
White raven [17]

Answer:

Width: 85 yards

Length: 95 yards

Step-by-step explanation:

Ok, so we need to make an equation for this problem. Let's call the width, w. We know that the length is 10 more than the width, so we can call it w +10.

180 = w + w + 10

Now, i order to isolate the w's we need to subtract 10 from each side.

170 = 2w

Now, we just have to divide by 2 on both sides.

W = 85

So we now know that the width is 85 and because the length is 10 more, the length is 95 yds.

7 0
3 years ago
What property of equality is 43n = -43
Mumz [18]

Answer:

n=-1

Step-by-step explanation:

43/-43=-1

3 0
3 years ago
Read 2 more answers
Will give brainliest
fiasKO [112]

Answer:

either 40 or 140

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • -4.7x + 4 = 4.6x + 7
    15·2 answers
  • A student decided to start saving money.On the first day he saved 1 cent, on the second day an additional 2 cents, on day 3 he s
    13·1 answer
  • What is 1/3 and 2/3 as decimals?
    8·2 answers
  • Find the quotient 34÷3
    10·1 answer
  • Which of the following are equations for the line shown below
    9·1 answer
  • Which of the following expressions are equivalent to 4 - (-5) +0?
    14·2 answers
  • 767,074 to the nearesr hundred thousand
    7·2 answers
  • It’s going to be Lindsay’s birthday soon and her 5 friends Mary Jacqui Tadeusz opal and Tony have contributed equal amounts of m
    5·2 answers
  • Jess was babysitting 4 kids. She brought candy as their reward for being good. Jess kept 10
    10·2 answers
  • Choose the correct expression for the nth term given the sequence.<br> 5, 9, 13, 17, 21, . . .
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!