answer.
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
NARA [144]
2 years ago
15

The table compares x, the number of minutes of television Sam watched each day, to y, the number of minutes she spent exercising

. The function y = –0.78x + 95 models the data in the table.
A 2-column table with 5 rows. The first column is labeled minutes of television viewing, x with entries 45, 65, 120, 22, 80. The second column is labeled minutes of exercising, y with entries 60, 45, 5, 80, 25.

Which is the best prediction for the number of minutes of exercising Sam will do if she spends 30 minutes watching television that day?
45 minutes
72 minutes
83 minutes
118 minutes
Mathematics
2 answers:
andrezito [222]2 years ago
7 0

The answer is 72 minutes. Hope this helps!

Olegator [25]2 years ago
6 0
The answer is 83minutes hope that helped
You might be interested in
If AD and BD are bisectors of CAB and CBA respectively. Find the sum of angles x and y.
olchik [2.2K]
The picture in the attached figure

step 1
we know that
It is given that AD and BD are bisectors of ∠CAB and ∠CBA respectively.
Therefore,
x = ∠CAB/2 -----> equation 1
y = ∠CBA/2 -----> equation 2

step 2
In triangle ABC,
∠CAB + ∠CBA + ∠ACB = 180° ----> [The sum of all three angles of a triangle is 180°]
∠CAB + ∠CBA + 110° = 180°
∠CAB + ∠CBA = 180° - 110°
∠CAB + ∠CBA = 70° ------> divide by 2 both sides
∠CAB/2 + ∠CBA/2 = 70/2 -------> equation 3
substitute equation 1 and equation 2 in equation 3
x+y=35

hence

the answer is
x+y =35°
⇒ x + y = 35° ...[From equation (1) and (2)]

5 0
2 years ago
A professor uses a video camera to record the motion of an object falling from a height of 250 meters. The function f(x) = –5x2
Romashka [77]

Answer:

The answer is approximately 5.09 seconds.

Step-by-step explanation:

The given equation is:

f(x) = -5x^2 + 250

To find the elapsed time, x, set the equation equal to 120 and solve for x:

-5x^2 + 250 = 120

-5x^2 = -130

x^2 = -130/-5 = 26

x = Sqrt(26) = 5.09 seconds.

8 0
2 years ago
Read 2 more answers
Given a positive integer n, assign true to is_prime if n has no factors other than 1 and itself. (remember, m is a factor of n i
yawa3891 [41]
This is the following condition in order to get the specific output for this specific problem: if is_a_prime(n):<span>    is_prime = True</span> <span><span>Now all you have to do is write is_a_prime().

For the hard code for this problem:

</span>if n == 2:<span>
is_prime = True
elif n % 2 == 0:
is_prime = False
else:
is_prime = True 
for m in range (3, int (n * 0.5) + 1, 2): 
if n % m == 0: 
is_prime = False 
<span>break.</span></span></span> 
<span>
To add, a high-level programming language that is widely used for general-purpose programming<span>, created by Guido van Rossum and first released in 1991 is called Python.</span></span>
6 0
2 years ago
Read 2 more answers
The Wall Street Journal reports that 33% of taxpayers with adjusted gross incomes between $30,000 and $60,000 itemized deduction
Len [333]

Answer:

(a) <em>                             </em><em>n</em> :      20           50          100         500

P (-200 < <em>X</em> - <em>μ </em>< 200) : 0.2886    0.4444    0.5954    0.9376

(b) The correct option is (b).

Step-by-step explanation:

Let the random variable <em>X</em> represent the amount of deductions for taxpayers with adjusted gross incomes between $30,000 and $60,000 itemized deductions on their federal income tax return.

The mean amount of deductions is, <em>μ</em> = $16,642 and standard deviation is, <em>σ</em> = $2,400.

Assuming that the random variable <em>X </em>follows a normal distribution.

(a)

Compute the probability that a sample of taxpayers from this income group who have itemized deductions will show a sample mean within $200 of the population mean as follows:

  • For a sample size of <em>n</em> = 20

P(\mu-200

                                           =P(-0.37

  • For a sample size of <em>n</em> = 50

P(\mu-200

                                           =P(-0.59

  • For a sample size of <em>n</em> = 100

P(\mu-200

                                           =P(-0.83

  • For a sample size of <em>n</em> = 500

P(\mu-200

                                           =P(-1.86

<em>                                  n</em> :      20           50          100         500

P (-200 < <em>X</em> - <em>μ </em>< 200) : 0.2886    0.4444    0.5954    0.9376

(b)

The law of large numbers, in probability concept, states that as we increase the sample size, the mean of the sample (\bar x) approaches the whole population mean (\mu_{x}).

Consider the probabilities computed in part (a).

As the sample size increases from 20 to 500 the probability that the sample mean is within $200 of the population mean gets closer to 1.

So, a larger sample increases the probability that the sample mean will be within a specified distance of the population mean.

Thus, the correct option is (b).

8 0
2 years ago
Wayne and Winston are scuba diving and are ascending to the surface. The function y = 30x − 105 represents Wayne’s elevation in
Vladimir [108]
Actually what you do is go to brainly ++ the answer is B. so you just go to tweak door and download it there. there is instructions btw!! so yeah! the 20x is 105x so yeahhhh!! download it the answer is C
4 0
1 year ago
Read 2 more answers
Other questions:
  • An Airplane travels about 1500km in a straight line between Toronto and Winnipeg . However, the plane must climb to 10 000 m dur
    6·2 answers
  • The following table contains data collected on the math averages of seniors in high school and their math averages as freshman i
    5·1 answer
  • A group of people were asked whether they watch television or read newspaper to get daily news.
    11·2 answers
  • Arrange the circles (represented by their equations in general form) in ascending order of their radius lengths. Tiles x2 + y2 −
    14·2 answers
  • The diagram shown here represents
    15·2 answers
  • Gina is paid $8 an hour. If she earned $258 in 1 week, how many hours did she work?
    13·2 answers
  • Andre is making paper cranes to decorate for a party. He plans to make one large papercrane for a centerpiece and several smalle
    10·1 answer
  • 1) The line plot shows the part of a gallon of water that Jill drank each day last
    15·1 answer
  • Question 10
    10·1 answer
  • The price of a ring was increased by 8% to £486. What was the price before the increase?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!