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
fiasKO [112]
3 years ago
15

Question 2 Unsaved A person’s theoretical maximum heart rate (in heartbeats per minute) is 220 - x where x is the person’s age i

n years (20 ≤ x ≤ 65). When a person exercises, it is recommended that the person strive for a heart rate that is at least 50% of the maximum and at most 75% of the maximum. The system of linear inequalities that describes the given information is y>120-1/2x (for 50% max heart rate) and y<165-3/4x (for 75%). B. 40-year-old person has a heart rate of 158 heartbeats per minute when exercising. Is the person’s heart rate in the target zone? Explain
Mathematics
1 answer:
Lera25 [3.4K]3 years ago
4 0

did you find the answer?


You might be interested in
The probability that a student will take loans to pay for their undergraduate education is 0.85, and the probability that a stud
AlexFokin [52]

Answer:

The probability that a student will go to graduate school and take loans to pay for their undergraduate education is P=0.111.

Step-by-step explanation:

We know that:

  • The probability that a student will take loans to pay for their undergraduate education is 0.85

        P(L)=0.85.

  • The probability that a student goes to graduate school, <em>given that the student took loans to pay for their undergraduate education,</em> is 0.13.

        P(G|L)=0.13

What is the probability that a student will go to graduate school and take loans to pay for their undergraduate education?

Out of the population of students, a proportion of 0.85 takes loans for undergraduate studies. Out of this, a proportion of 0.13 goes to graduate school.

This probability can then be calculated as:

P(G\&L)=P(L)\cdot P(G|L)=0.85\cdot0.13=0.1105

7 0
3 years ago
Two lines or equations are described in each part. Decide whether each system has one solution, no solution, or infinitely many
olga55 [171]
To get the solution of a set of equations means to get a point that satisfies both equations.

Part (1):
The first line has a rate of change of 7, this means that slope of first line is 7
The second line has a rate of change of -7, this means that slope of second line is -7
Since the slope of the first line = - slope of the second line, then these two lines are definitely perpendicular to each other.
Two perpendicular lines will meet only in one point. This means that one point only will satisfy both equations (check the image showing perpendicular lines attached below)
Therefore, only one solution exists in this case

Part (2): 
The first given equation is:
2x + 3y = 5.5
The second given equation is:
4x + 6y = 11
If we simplified the second equation we will get: 2x + 3y = 5.5 which is exactly similar to the first equation.
This means that the two given equations represent the same line. 
Therefore, we have infinite number of solutions

Part (3):
We are given that the two lines are parallel. This means that the two lines are moving the same path side by side. Two parallel lines can never intersect. This means that no point can satisfy both equations (check the image showing parallel lines attached below).
Therefore, we have no solutions for this case.

7 0
3 years ago
Read 2 more answers
What is the answer for this but only 1 ANSWER? ​
earnstyle [38]
Factored: 4 ( a + 2c - 2)
Standard form/simplified : 4a + 8c - 8
6 0
2 years ago
Read 2 more answers
Please help, I need this quickly. It's an easy trigonometric question.
Mashutka [201]
\bold{ANSWER:}
OPTION D: None of these

\bold{EXPLANATIONS:}

4 0
2 years ago
Read 2 more answers
Please help!!!! Find X and Y
Rudik [331]

Answer: X=15 , Y=15\sqrt{3}

Step-by-step explanation:

This triangle is a 30, 60, 90 so that means it would be - a, 2a, a\sqrt{3} on each side, so add that all together and you get x-15 and y-15\sqrt{3}

5 0
3 years ago
Other questions:
  • Round 0.085416 to the nearest ten thousandth.
    6·1 answer
  • The 3 in 43.54 is how much larger than the 3 in 56.37?
    6·1 answer
  • Does the KE of a car change more when it goes from 10 to 20 km/h or when it goes from 20 to 30 km/h?
    5·1 answer
  • Jane left the school and started to bike along the road at a rate of 12 mph. Her friend Sally left the school 10 minutes after J
    8·1 answer
  • 185 mass is 2:3 what is the mass of the yoghurt
    10·1 answer
  • Stephan can run 3 miles in 15.75 minutes. Kelsha can run 5 miles in 226 minutes.
    11·1 answer
  • A jet ski can go 50 miles using one gallon of gas. About how many gallons of gas will be used to go 150 kilometers?
    10·1 answer
  • Fill in each box with the correct number or variable.
    13·1 answer
  • Find the value of x I need help
    11·1 answer
  • I need help with this please!
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!