An experiment was conducted by some students to explore the nature of the relationship between a person's heart rate (measured in beats per minute) and the frequency at which that person stepped up and down on steps of various heights. Three rates of stepping and two different step heights were used. A subject performed the activity (stepping at one of the three stepping rates at one of the two possible heights) for three minutes. Heart rate was then measured at the end of this period. The variables "stepping rate" and "step height" are the
A. factors.
B. levels.
C. controls.
D. units.
E. response variables.
Answer:
A. factors.
Step-by-step explanation:
The correct option is - A. factors.
Reason -
The variables "stepping rate" and "step height" are the factors because a activity is performed in which stepping at one of the three stepping rates at one of the two possible heights for three minutes.
The activity is based on both the variables stepping rate and step height.
A rectangle has a length of 25 feet and a width of 18 feet what is the area model of the rectangle
Answer:
450 sq.feet
Step-by-step explanation:
Given,
Length ( l ) = 25 feet
Width ( b ) = 18 feet
To find :
Area ( rectangle ) = ?
Formula : -
Area ( rectangle ) = l x b
Area ( rectangle )
= 25 x 18
= 450 sq.feet
Please solve no need for explanation
Answer:
Ermmm..
Step-by-step explanation:
We can find the natural first and find the Ineger
Robert claims that his dog can do single-digit multiplication. He shows the dog 8 cards with simple multiplication problems that are either correct or incorrect. The dog correctly identifies the correctness of the card 5 times out of 8. If the dog were simply guessing, how many would the dog be expected to get correct? (1 point) Group of answer choices 5 8 13 4
Answer: Theorically it would be 4
Answer:
4
Step-by-step explanation:
Well since he has a 50% of getting it right, we use 50% of 8 which would be 4
also how does robert have such a smart dog-
Help!! Il give you brainlest
Answer:
ithink the first one :p
Step-by-step explanation:
68 less than 55 times a number is equal to the number.
I will make brainliest
Answer:
5x - 68 = x
Step-by-step explanation:
number = x
5x - 68 = x
Solve for x:
5x - 68 = x
-68 = x - 5x
-68 = -4x
68 = 4x
x = 68/4
x = 17
Answer:
55x-68 = x
Step-by-step explanation:
Help me!
No links!! Please!!
Answer:
The perimiter is 65
Please help, 15 points
Answer:
The answer is 10.
Step-by-step explanation:
The equation you are given is in slope-intercept form or y=mx+b where m is the slope and b is the y intercept. Your equation is y=10x, so the slope or m is 10.
How far the penguin can walk in 1 second
Not known. This varies because it depends on if the penguin is going full speed or not, and the size or even just the penguin itself because not all penguins walk the same speed.
Answer:
1 step? what speed?
What is the length of C'D'?
Answer:
C'D
Step-by-step explanation:
3 1 half plus 1 half .. and haii
Solve the following
5x20
Answer:
100
Step-by-step explanation:
1
20
X 5
100
I have to graph these. I don't understand!!! please just tell me if it's a closed circle and where I have to put it
Answer:
Okay so im gonna put the pictures here, it might look like spam but i promise you its not
Step-by-step explanation:
The numbers are in order from x > 7 to x < 2
☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆
☁Brainliest is greatly appreciated!☁
Hope this helps!!
- Brooklynn Deka
Determine the value of x. Round answer to the nearest hundredth. thank you to whoever helps! Will Be Marked as BRAINLIEST!
Answer:
34.61Step-by-step explanation:
Find the diagram attached
From the diagram;
Hypotenuse = 81.9
Angle of elevation = 65degrees
Required
The value of x (Adjacent)
Using the SOH CAH TOA identity
cos theta = adjacent/Hypotenuse
cos 65 = x/81.9
x = 81.9cos65
x = 81.9(0.4226)
x = 34.61
Hence the value of x to the nearest hundredth is 34.61
Classify the triangle based on its sides.
A equilateral C iscoles
B scalene
Answer:
Step-by-step explanation:
The answer is scalene triangle
Answer:
It is a scalene triangle because its all sides are different It is not iscoles because it does not have two sides equalAnd is not also equilateral because it does not have all sides equal
THANK you
Please tag me brianliest if you are helped with my answer
The lenths of the 2 legs of right triangle abc show below are given in inches. The midpoint of ab is how many inches from A ?
Answer:
Option B
Step-by-step explanation:
The complete question is attached
As we can see in the image , ABC is a right angle triangle
Thus as per Pythagorean theorem, to find line AB
AB2 = 322 + 242
AB2 = 1024 + 576
AB2 = 1600
Taking square root of both the sides, we get –
AB = √1600
AB = 40
The mid point of AB = AB/2 = 40/2 = 20
At a pet store, there are 30 aquariums.
Of the 30, 20 have fresh water with
15 fish each. The other 10 aquariums
have salt water with 6 fish each. Which
equation could be used to find f, the
total number of fish at the pet store?
Answer:
f = (20 × 15) + (10 × 6)
Explanation:
You are just find how many fish are salt water and how many freshwater and adding them together. The total number of aquariums is irrelevant in this case.
1. Gabriella had a piece of ribbon that was 3į yards long. She used this ribbon to make bows. Each
bow was made from a piece of the ribbon that was yard long. This situation can be represented
by the equation 3 = = Which statement best describes what the quotient 4ſ represents
3
4.
=4
3
in the situation above?
(1 point)
a. Gabriella had bows that were each 4ş yards long.
b. Gabriella had 4 yards of ribbon left after making the bows.
c. Gabriella made 4 bows from the piece of ribbon and had
of a yard left.
d. Gabriella made 4 bows from the piece of ribbon and had enough left for
of a bow.
Page
1 / 2
+
Answer:
B
Step-by-step explanation:
When Gabriella finish her bows she had 4 extra.
Hope this helps ;)
NEED ASAP . 19 MINUTES LEFT GIVNG BRAINLIEST PLZZZZ
Answer:
9
Step-by-step explanation:
so sorry if im too late...
The graph of function p is shown on the grid. The coordinates of the x-intercepts, the y-intercepts, and the vertex are integers. What is
the minimum value of p?
Answer: I even
Step-by-step explanation: I am so so sorry for the Chinook ethat and I have don’t
Know how the sun goes out for a while and I don’t want to you say that again lol lol you
Match the graph to its equation.
Answer: First one is A, 2nd one is B, 3rd one is C
Step-by-step explanation:
Find the perimeter of the object
Help step by step please!
Answer:
29.42 units
Step-by-step explanation:
1) Find the perimeter around the semi-circle
To do this, we find the circumference of the circle using the given diameter:
[tex]C=\pi d[/tex] where d is the diameter
Plug in 6 as the diameter
[tex]C=\pi (6)\\C=6\pi[/tex]
Divide the circumference by 2
[tex]\frac{6\pi }{2} \\= 3\pi[/tex]
Therefore, the perimeter around the semi-circle is 3π units.
2) Find the perimeter around the rest of the shape
Although it's impossible to determine the lengths of the varied sides on the right side of the shape, we know that all of those vertical sides facing the right add up to 6. We also know that all of those horizontal sides facing up add up to 7. Please refer to the attached images.
Therefore, we add the following:
7+6+7
= 20
Therefore, the perimeter around that area of the shape is 20 units.
3) Add the perimeter around the semi-circle and the perimeter around the rest of the shape
[tex]20+3\pi \\= 20+9.42\\= 29.42[/tex]
Therefore, the perimeter of the shape is approximately 29.42 units.
I hope this helps!
The numbers in the diagram below indicate the lengths of the sides of a triangle. Bernadette drew the following triangle and claims it is a right triangle.
State whether or not Bernadette is correct?
Answer:
It's not a right triangle, there isn't a right angle anywhere there.
Also, it's not applicable via pythagorean theorem
Step-by-step explanation:
I really need help with this so if you can please help.
Answer:
I don't know if this is the correct answer but I tried:)
by the way what grade is this?
if a triangle is dilated with a scale factor of 3, how do the sizes for the pre-image and image compare?
Answer:
Please check explanations
Step-by-step explanation:
When we dilate a particular figure, we are simply increasing the dimensions of its sides
By dilating the pre-image by a factor of 3, we are simply increasing the dimensions of it by a multiple of 3
so say for example, the base of the pre-image has a measure of 4 ft, the base of the image which is the pre-image dilated by a scale factor of 3 will be 4 ft * 3 = 12 ft
What this mean is that we have succeeded in tripling the dimension of the pre-image to give the dimension of the image
which table represents y as a function of x
Annabel is comparing the distances that two electric cars can travel after the battery is fully charged. Car A (miles) Car B (miles) Mean 145 200 Median 142 196 IQR 8 4 MAD 6 2 Part A Use the measures of center to make an inference about the data. Use the drop-down menus to complete your answer. Car A can travel further than Car B after the battery is fully charged. Part B Based on the data, which car performs most consistently? Explain. A. Car A because the measures of center are smaller for Car A than for Car B. B. Car B because the measures of center are smaller for Car B than for Car A. C. Car A because the measures of variability are smaller for Car A than for Car B. D. Car B because the measures of variability are smaller for Car B than for Car A.
Answer:
Car B can travel further than Car A after the battery is fully charged.
D. Car B because the measures of variability are smaller for Car B than for Car A.
Step-by-step explanation:
Car B can travel further than Car A after the battery is fully charged because Car A has lesser mean and median than Car B.
Median divides the data into two halves. A smaller median means that there is lesser mileage of Car A than Car B.
There are two measures.
Measure of center tells us how much near or far the data is spread from the center.
The mean , median and mode are the measures of center.
Car A has less mean , median telling us that it traveled less.
Measure of Variability tells us how data changes with a single value.
Smaller MAD means the data is denser at the mean. Car B has lesser MAD.
Smaller IQR tells us that data is closer to the middle of the data.
Car B has smaller IQR .
So car B traveled consistently as it has smaller IQR and MAD
D. Car B because the measures of variability are smaller for Car B than for Car A.
Answer:
Car B can travel further than Car A after the battery is fully charged.
D: Car B because the measure of variability is smaller for Car B than for Car A.
Step-by-step explanation:
given g(x)=2(x-4)+7 find 2g(-6)
Answer:
g(x)=2(x-4)+7
2g(-6)=2[2(-6-4)+7]
=2[2(-10)+7]
=2(-20+7)
=2(-13)
=-26
PLEASE HELP YOU’LL GET 15 POINTS
358.41x10^5 in standard form
Answer:
35,841,000
Step-by-step explanation:
358.41x10^5
Move the decimal 5 places to the right
35,841,000
GUYS ANYONE HERE I REALLY NEED HELP PLS! Find the area of the polygon with vertices D (-1, 2), E (2, 2), F (2, -1), and G (-3, -1). If necessary, round to the nearest tenth
Answer:
48 units
Step-by-step explanation:
1. graph
2. separate into a triangle and a square
3. the square is 6x6 squares, so 36 there
4. the triangle is 4x6, so (4x6)/2 is 12
5. 36+12 = 48 units
Diana is throwing a ball across a 56-yard field she threw it 3/4 of the way across the field how far did diana throw the ball?
Answer:
71
Step-by-step explanation: