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
Montano1993 [528]
3 years ago
15

PLz, help I really don't understand these problems at all. Click here to see the screenshot

Mathematics
1 answer:
MrMuchimi3 years ago
4 0

Answer:

1. $65,000

2. A 4 and 2 mile hike

3. B 4.00

4. C multiplication

Step-by-step explanation:

You might be interested in
A track-and-field athlete releases a javelin. The height of the javelin as a function of time is shown on the graph below. Use t
Georgia [21]
Part 1:
 
 For this case we must see in the graph the axis of symmetry of the given parabola.
 We have then that the axis of symmetry is the vertical line t = 2.
 Answer:
 
The height of the javelin above the ground is symmetric about the line t = 2 seconds:

 
Part 2:

 
For this case, we must see the time t for which the javelin reaches a height of 20 feet for the first time.
 We then have that when evaluating t = 1, the function is h (1) = 20. To do this, just look at the graph.
 Then, we must observe the moment when it returns to be 20 feet above the ground.
 For this, observing the graph we see that:
 h (3) = 20 feet
 Therefore, a height of 20 feet is again reached in 3 seconds.
 Answer:
 
The javelin is 20 feet above the ground for the first time at t = 1 second and again at t = 3 seconds
5 0
3 years ago
The ordered pairs (t, 36), (5, 45) represent a proportional relationship. Find the value of t.
olasank [31]
The answer for t is 4 and the proportional relationship is 9
6 0
3 years ago
Read 2 more answers
Suppose in the population, the Anger-Out score for men is two points higher than it is for women. The population variances for m
tatuchka [14]

Answer:

a)= 2

b) 6.324

c) P= 0.1217

Step-by-step explanation:

a) The mean of the sampling distribution of X`1- X`2 denoted by ux`-x` = u1-u2 is equal to the difference between population means i.e = 2 ( given in the question)

b) The standard deviation of the sampling distribution of X`1- X`2 ( standard error of X`1- X`2) denoted by σ_X`1- X`2 is given by

σ_X`1- X`2 = √σ²/n1 +σ²/n2

Var ( X`1- X`2) = Var X`1 + Var X`2 =  σ²/n1 +σ²/n2

so

σ_X`1- X`2 =√20 +20 = 6.324

if the populations are normal the sampling distribution X`1- X`2 , regardless of sample sizes , will be normal with mean u1-u2 and variance σ²/n1 +σ²/n2.

Where as Z is normally distributed with mean zero and unit variance.

If we take X`1- X`2= 0 and u1-u2= 2  and standard deviation of the sampling distribution = 6.324 then

Z= 0-2/ 6.342= -0.31625

P(-0.31625<z<0)= 0.1217

The probability would be 0.1217

8 0
2 years ago
Which of the following expressions is equivalent to that expression
olganol [36]

Answer:

D

Step-by-step explanation:

not good at explaining i just think its D

7 0
3 years ago
Read 2 more answers
Andrew has three times as many pens as Owen. Together they have 20 pens. How many pens Andrew have?
Softa [21]
Andrew has 10 pens bc it's half of twenty
3 0
3 years ago
Other questions:
  • Your science teacher recently gave a quiz to 28 students present in class. The class average was an 82.5. Five students that wer
    11·1 answer
  • Please help me ASAP it’s really important and I’m stuck
    8·1 answer
  • Plot the points (0, −3) and (−2,5) on the coordinate plane.
    14·2 answers
  • Which of the following is a valid form of evidence in deductive reasoning? a.property b.pattern c.assumption d.conjecture
    14·1 answer
  • Which function has a domain of all real numbers except x=pi/2+-npi?
    11·2 answers
  • Find sin q if q is an angle in standard position and the point with coordinates (4, 3) lies on the terminal side of the angle.
    11·2 answers
  • There are 128 fluid ounces in gallon and 16 fluid ounces in a pint. Shelby wants to find the number of pints in a gallon. She wr
    11·1 answer
  • What is the area, in square inches, of the trapezoid below? 15.7 in 8 in 6.6 in​
    13·1 answer
  • 12-9x translate the expression
    15·1 answer
  • What is 2/3 divided by 13?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!