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
alex41 [277]
3 years ago
9

Suppose the linear regression line y=-0.3x + 11.2 predicts the time, in

Mathematics
2 answers:
ivolga24 [154]3 years ago
8 0

Answer:

D. 9.1

Step-by-step explanation:

You first multiply -0.3 *(7) which will give you -2.1. Lastly you add 11.2 to the -2.1 that will give you the answer 9.1

choli [55]3 years ago
5 0
D y= -0.3(7) + 11.2
= 9.1
You might be interested in
write the number 2 millions, 6 hundred thousands, 3 thousand, 1 hundred, 2 in Standard Form and Expanded Form
Mnenie [13.5K]
In standard form it would be 2,603,102. In expanded form it would be 2,000,000+600,000+3,000+100+2.
5 0
3 years ago
A chemist has a 40% alcohol solution and a 25% alcohol solution. How much of each should he mix together to get 50 liters of a 3
ludmilkaskok [199]

Answer:

33 1/3 L of the 40% solution, 16 2/3 L of the 25% solution

Step-by-step explanation:

Set up two equations...

Let x represent the number of Liters of the 40% solution

Let y represent the number of Liters of the 25% solution

We need 50 liters total, so

x + y = 50

and we need the 50 L to be 35% solution, so

0.4x = 0.25y =  0.35(50)  

Solve the first equation for one variable...

x = 50 - y             (subtract y from both sides in equation 1)

Now substitute that value into the second equation...

0.4(50 - y) + 0.25y = 17.5      (x becomes 50 - y, 0.35(50) = 17.5)

Now solve for y...

20 - 0.4y + 0.25y = 17.5

  -0.15y = -2.5

      y = 16.66666667

        y = 16 2/3 L

So we need to plug that into the first equation to find 'x'

x + 16 2/3 = 50

x = 50 - 16 2/3

x = 33 1/3

3 0
3 years ago
Read 2 more answers
A large truck has two fuel tanks, each with a capacity of 150 gallons. Tank 1 is half full, and Tank 2 is empty.
12345 [234]

Answer:

1) G(t) = 75 + \frac{23}{4}t\\

2) After 8 minutes delivering fuel the tanks will have 121 gallons of fuel

Step-by-step explanation:

1) For generating the equation we have to take into account that in the tanks there is a initial volume of fuel that corresponds to 75 gallons, as it is stated that tank one is half full. As the capacity for tank 1 is of 150 gallons, half of the tank equals to:

\frac{150}{2} = 75 gallons

Now we have to convert the rate of delivery that is expressed as a mixed number to an improper fraction so:

5\frac{3}{4} = \frac{(5x4)+3}{4} = \frac{23}{4}

Then the pumping rate is of 23/4 gallons per minute, to get how many gallons are in the tank we just need to multiply this rate by the time in minutes, and as there is an initial volume we have to add it, so we have the following equation:

G(t) = 75 + \frac{23}{4}t\\

2) To know how much fuel is in the tank after 8 minutes we have to replace this time in the previous equation so we have

G(t) = 75 + \frac{23}{4}t\\G(8) = 75 + \frac{23}{4}(8)\\G(8) = 75 + 23(2)\\G(8) = 75 + 46\\G(8) = 121 gallons

After 8 minutes delivering fuel the tanks will have 121 gallons of fuel

8 0
3 years ago
The Goodsmell perfume company has a new line of perfume and is designing a new bottle for it. Because of
Alex777 [14]

Answer:

its to long for me

Step-by-step explanation:

5 0
3 years ago
E^4x-5-e=0 Solve the equation for x
kati45 [8]

Answer:

x =  \frac{1}{4}  \times In(5 + e)

Step-by-step explanation:

{e}^{4x}  - 5 - e = 0 \\  {e}^{4x}  = 5 + e \\ 4x = In(5 + e) \\

\boxed{Answer:{\boxed{\green{x =  \frac{1}{4}  \times In(5 + e)}}}}

8 0
2 years ago
Other questions:
  • Consider the graph of the quadratic function. Which interval on the x-axis has a negative rate of change?
    9·2 answers
  • Find the indicated side of the triangle
    12·1 answer
  • Sierra left $4.50 as a tip for a waiter. This was 18% of the bill before the tip. How much was her total bill before the tip?
    10·2 answers
  • The benefit of these systems is that they might make a driver aware of an object ahead well before the driver could see it using
    6·2 answers
  • Factorize x squared - 1x +10 =0
    15·1 answer
  • I NEED HELP ASAP ...
    13·1 answer
  • Soo I need help... can u help?
    12·2 answers
  • 4. For what event must theoretical probability be determined to solve this problem?
    7·1 answer
  • I HATE word problems can you do this?
    15·1 answer
  • Factor the equation <br> please help
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!