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
Anna71 [15]
3 years ago
11

Mark is increasing his exercise routine by running and walking at least 4 miles each day. His goal is to burn a minimum of 1,500

calories from this exercise. Walking burns 270 calories/mile and running burns 650 calories/mile. Let w represent the number of miles Mark walks and let r represent the number of miles Mark runs. Write a system of inequalities to model this situation.
Mathematics
1 answer:
zubka84 [21]3 years ago
7 0

Answer:

w + r 》 4 (greater than/equal to 4)

270w + 650r 》 1500

You might be interested in
find the coordinates of the circumcenter of triangle abc. A(0,5) B(-4,5) C(-4,-3) PLEASE HELP IM FAILING AND I WILL GIVE BRAINLI
hodyreva [135]
(-2,1). Hope this helps!
4 0
2 years ago
Allied Corporation is trying to sell its new machines to Ajax. Allied claims that the machine will pay for itself since the time
kvasek [131]

Answer:

z(s) is in the acceptance region. We accept H₀  we did not find a significantly difference in the performance of the two machines therefore we suggest not to buy a new machine

Step-by-step explanation:

We must evaluate the differences of the means of the two machines, to do so, we will assume a CI  of 95%, and as the interest is to find out if the new machine has better performance ( machine has a bigger efficiency or the new machine produces more units per unit of time than the old one) the test will be a one tail-test (to the left).

New machine

Sample mean                  x₁ =    25

Sample variance               s₁  = 27

Sample size                       n₁  = 45

Old machine

Sample mean                    x₂ =  23  

Sample variance               s₂  = 7,56

Sample size                       n₂  = 36

Test Hypothesis:

Null hypothesis                         H₀             x₂  -  x₁  = d = 0

Alternative hypothesis             Hₐ            x₂  -  x₁  <  0

CI = 90 %  ⇒  α =  10 %     α = 0,1      z(c) = - 1,28

To calculate z(s)

z(s)  =  ( x₂  -  x₁ ) / √s₁² / n₁  +  s₂² / n₂

s₁  = 27     ⇒    s₁²  =  729

n₁  = 45    ⇒   s₁² / n₁    = 16,2

s₂  = 7,56   ⇒    s₂²  = 57,15

n₂  = 36     ⇒    s₂² / n₂  =  1,5876

√s₁² / n₁  +  s₂² / n₂  =  √ 16,2  + 1.5876    = 4,2175

z(s) = (23 - 25 )/4,2175

z(s)  =  - 0,4742

Comparing z(s) and  z(c)

|z(s)| < | z(c)|  

z(s) is in the acceptance region. We accept H₀  we did not find a significantly difference in the performance of the two machines therefore we suggest not to buy a new machine

The very hight dispersion of values s₁ = 27 is evidence of frecuent values quite far from the mean

3 0
3 years ago
21) 0=-2y + 10 - 6x<br> 14 - 22y= 18x
zhenek [66]

Answer:

PlPlease be more spacific

Step-by-step explanation:

4 0
2 years ago
Could anyone help me find the value of x for this question?
kirza4 [7]
Can we get a picture
4 0
2 years ago
What is the least common denominator of 1/2 and 9/10
nirvana33 [79]

Answer:the least common denominator is 10 because 5x2 is 10 and then 10x1 is 10 its the least for both of them

Step-by-step explanation:

3 0
10 months ago
Other questions:
  • mrs.farley made 72 ounces of hamburger into 24 meats patties.how many ounces of hamburger are in each meat patty?
    15·2 answers
  • How do you find an area of a shape?
    7·2 answers
  • Which of the following is a way to find the value of −4 + (−6)?
    9·1 answer
  • A preliminary study of hourly wages paid to unskilled employees in three metropolitan areas was conducted. Seven employees were
    10·1 answer
  • a car needw fixing and abe can fix it for $70 per hour with a $130 part, but gabe can fix it for $80 an hour with a $40 part. ho
    5·2 answers
  • luke bought 6 pretzels for himself and friends he spent a total of $13.50 let p represent the price of one pretzel​
    6·1 answer
  • Find the slope from the graph (help please)
    14·1 answer
  • Please help <br> thank you
    12·1 answer
  • Please help!!! I'll give brainliest!!
    6·1 answer
  • If x=4 what is the value of 4/5 (2x +7) - 2/3 (2x + 7)
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!