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
nevsk [136]
3 years ago
8

When quin returned from vacation,he turned the heat back on his home.he set the temperature as high as it could go. Q represents

the temperature in Quinn’s home (in degrees Celsius) after t minutes.
Q = 15 + 0.4t


A. What was the temperature when Quinn returned from vacation?


B.how much does the temperature increase every minute?


C. How much will the temperature increase if Quinn leaves the heat on for 20 minutes
Mathematics
1 answer:
lozanna [386]3 years ago
3 0

Answer:

A. Q = 15 °C

B.  0.4 °C

C. Q = 23 °C

Step-by-step explanation:

The following equation models the temperature of Quin's home,

Q = 15 + 0.4t

Where Q is the temperature in degree Celsius and t is the time in minutes

A. What was the temperature when Quinn returned from vacation?

At this time, t = 0 since Quin is just arrived

Q = 15 + 0.4(0)

Q = 15 °C

B. how much does the temperature increase every minute?

0.4(t)

0.4(1)

0.4 °C

The temperature increases by 0.4 centigrade every minute.

C. How much will the temperature increase if Quinn leaves the heat on for 20 minutes

For t = 20 mins

Q = 15 + 0.4(20)

Q = 15 + 8

Q = 23 °C

You might be interested in
A combination of numbers and operations is called formula: true or false?
FinnZ [79.3K]

Answer:

true

Step-by-step explanation:

its actually false

4 0
3 years ago
Rounded to the nearest hundredth, what is the positive solution to the quadratic equation 0 = 2x2 + 3x – 8? Quadratic formula: x
Lynna [10]

ANSWER

1.39

EXPLANATION

The given quadratic equation is

0 = 2 {x}^{2}  + 3x - 8

This is the same as,

2 {x}^{2}  + 3x - 8 = 0

Comparing to

a {x}^{2}  + bx  + c = 0

We have

a=2, b=3,c=-8

Using the quadratic formula, the solution is given by:

x =  \frac{ - b \pm \:  \sqrt{ {b}^{2}  - 4ac} }{2a}

We substitute the values to get,

x =  \frac{ - 3\pm \:  \sqrt{ {3}^{2}  - 4(2)( - 8)} }{2(2)}

x =  \frac{ - 3\pm \:  \sqrt{ 73} }{4}

The positive root is

x =  \frac{ - 3 + \:  \sqrt{ 73} }{4} = 1.39

to the nearest hundredth.

4 0
3 years ago
Read 2 more answers
Three times two less than a number is greater than or equal to five times the number. Find all of the numbers that satisfy the g
Sholpan [36]
It would be 3(n-2) is greater than or equal to 5n.
3 0
3 years ago
Read 2 more answers
Help me with this math problem please
mrs_skeptik [129]

Answer:

y=8

RS=77, ST=31

Step-by-step explanation:

Note that the entire segment RT is the combined lengths of RS and ST. So:

RT=RS+ST

We know that RT is 108, RS is (9y+5), and ST is (3y+7). Substitute:

108=(9y+5)+(3y+7)

On the right, combine like terms:

108=(9y+3y)+(5+7)

Add:

108=12y+12

Subtract 12 from both sides. The right cancels:

96=12y

Divide both sides by 12:

y=8

So, the value of y is 8.

To find RS and ST, substitute 8 for y. So:

RS=9y+5

Substitute 8 for y:

RS=9(8)+5

Multiply:

RS=72+5

Add:

RS=77

Do the same for ST:

ST=3y+7

Substitute 8 for y:

ST=3(8)+7

Multiply:

ST=24+7

Add:

ST=31

5 0
3 years ago
Read 2 more answers
Hi guys can you please help me
marissa [1.9K]

Answer: 40


Step-by-step explanation:


Finding perimiter is simple! You add the L & the W by each other and then times that by 2!


15 + 5 = 20


20 X 2 = 40!


- R3KTFORGOOD ☕

8 0
3 years ago
Other questions:
  • Factor the expression completely:<br> x³ - 3x² - 4x + 12
    15·1 answer
  • 4.5w = 5.1w - 30<br><br> Please help!!!
    5·1 answer
  • |5x+8|=|10x+7| solve the equation.
    5·1 answer
  • Answer to this math question
    13·1 answer
  • What slope is perpendicular to x + 4y = 12
    6·1 answer
  • A line passes through the point (–2, 7) and has a slope of –5.
    12·2 answers
  • Find the area of the rectangle below by multiplying its length and width.
    7·1 answer
  • Noah bought 4 tacos and paid $6. At this rate, how many tacos could he buy for $15? Jada's family bought 50 tacos for a party an
    6·1 answer
  • If a=5,b=-4 and c=-3,what is the value of 2a-6b+3c?<br><br> _____
    14·2 answers
  • Lan make 60 cakes. he gives 1/4 of the cakes to Helen. he gives 20 of the 60 cakes to sue. what fraction of the 60 cakes does he
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!