Answer:
36
Step-by-step explanation:
18 miles per hour so for 2 hours which is double, she should have traveled 36 miles.
Good Luck!
The resting heart rate for an adult horse should average about µ = 47 beats per minute with a (95% of data) range from 19 to 75 beats per minute. Let x be a random variable that represents the resting heart rate for an adult horse. Assume that x has a distribution that is approximately normal.
Required:
a. What is the probability that the heart rate is less than 25 beats per minute?
b. What is the probability that the heart rate is greater than 60 beats per minute?
c. What is the probability that the heart rate is between 25 and 60 beats per minute?
Answer:
a. 0.0582 = 5.82% probability that the heart rate is less than 25 beats per minute.
b. 0.1762 = 17.62% probability that the heart rate is greater than 60 beats per minute.
c. 0.7656 = 76.56% probability that the heart rate is between 25 and 60 beats per minute
Step-by-step explanation:
Empirical Rule:
The Empirical Rule states that, for a normally distributed random variable:
Approximately 68% of the measures are within 1 standard deviation of the mean.
Approximately 95% of the measures are within 2 standard deviations of the mean.
Approximately 99.7% of the measures are within 3 standard deviations of the mean.
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.
Mean:
[tex]\mu = 47[/tex]
(95% of data) range from 19 to 75 beats per minute.
This means that between 19 and 75, by the Empirical Rule, there are 4 standard deviations. So
[tex]4\sigma = 75 - 19[/tex]
[tex]4\sigma = 56[/tex]
[tex]\sigma = \frac{56}{4} = 14[/tex]
a. What is the probability that the heart rate is less than 25 beats per minute?
This is the p-value of Z when X = 25. So
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{25 - 47}{14}[/tex]
[tex]Z = -1.57[/tex]
[tex]Z = -1.57[/tex] has a p-value of 0.0582.
0.0582 = 5.82% probability that the heart rate is less than 25 beats per minute.
b. What is the probability that the heart rate is greater than 60 beats per minute?
This is 1 subtracted by the p-value of Z when X = 60. So
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{60 - 47}{14}[/tex]
[tex]Z = 0.93[/tex]
[tex]Z = 0.93[/tex] has a p-value of 0.8238.
1 - 0.8238 = 0.1762
0.1762 = 17.62% probability that the heart rate is greater than 60 beats per minute.
c. What is the probability that the heart rate is between 25 and 60 beats per minute?
This is the p-value of Z when X = 60 subtracted by the p-value of Z when X = 25. From the previous two items, we have these two p-values. So
0.8238 - 0.0582 = 0.7656
0.7656 = 76.56% probability that the heart rate is between 25 and 60 beats per minute
Which step in the solution contains the first error ?? Please helpp
Answer:
step 4 I believe
Step-by-step explanation:
What is Start Fraction 5 Over 8 End Fraction divided by One-fourth?
Answer:
2.5
Step-by-step explanation:
5/8 ÷ 1/4
Division sign changes to multiplication and the reciprocal of the divisior is used to multiply instead :
5/8 * 4/1
= (5*4) / (8*1)
= 20 / 8
= 2.5
Find the value of x in the given figure using properties of parallel lines.
Answer:
x =42
Step-by-step explanation:
x and 138 are same side interior angles. Same side interior angles are supplementary when the lines are parallel
x+138 = 180
x = 180-138
x =42
Answer:
42°
Step-by-step explanation:
138° + x = 180°
180° - 138° = 42°
Any help 13 points
If the price of tacos is $1.75, how many will consumers buy?
Answer:
B-100 If the price of tacos is $1.75, th consumers will buy 100 tacos
A group of campers is going to occupy campsites at a campground. There are 16 campsites from which to choose. In how many ways can the campsites be chosen?
Answer:
The campsites can be chosen in 5,765,760 different ways.
Step-by-step explanation:
Given that a group of campers is going to occupy 6 campsites at a campground, and there are 16 campsites from which to choose, to determine in how many ways the campsites can be chosen, the following calculation must be performed:
16 x 15 x 14 x 13 x 12 x 11 = X
240 x 182 x 132 = X
240 x 24,024 = X
5,765,760 = X
Therefore, the campsites can be chosen in 5,765,760 different ways.
Help Me Pls i need it now
Nonsense = Report
Answer:
8,6,3, v= 144
4,8,6, v=192
15,10,6, v=900
Step-by-step explanation:
Answer:
This geometric questions are very very simple let's start to solve all steps
Step-by-step explanation:
L means long of Prism and look at 8 and 6 for first prism. Which one is longest of course 8
w means wide =6
h means high=3 and
V means Volume: You must multiply by 3, 6,8 to find volume, so we can say Volume 3*6*8=144 easily
add negative 4 plus negative 6
-10
thats it, thats what i know
Use the grouping method to factor this polynomial.
x3 + 2x2 +7x+14
ANSWER ASAP!
ANSWER:-
(x²+7)(x+2)
hope it helps
have a nice day
Insert a digit to make numbers that are divisible by 24 if it is possible: 83...8
plz i need help fast
Answer:
2
Step-by-step explanation:
8328÷24=347
hope this is helpful
1. Leo ran around the track three times. The track was 400 meters. How many kilometers did he run altogether?
What is the 100th term of 1, 6, 11, 16
Answer:
496
Step-by-step explanation:
a+99d
1+ 99 (5)
1+ 495
the sum of two consecutive numbers is 2x+3. What are the numbers
Answer: 2 and 3
Step-by-step explanation:
its numbers
Noel and Casey both start at the same place. Noel walks due south and Casey walks due east. After some time has passed, Noel is 6 miles south and Casey is 8 miles east. At this time, Noel is walking at a rate of 2 mph and Casey is walking at a rate of 1 mph. How fast is the distance between them increasing at this time
Answer:
2.04 miles per hour
Step-by-step explanation:
Given
Noel
[tex]n_1 =6miles[/tex]
[tex]r_1 = 2mph[/tex]
Casey
[tex]c_1 = 8miles[/tex]
[tex]r_2 =1mph[/tex]
Required
The rate at which the distance increases
Their movement forms a right triangle and the distance between them is the hypotenuse.
At [tex]n_1 =6miles[/tex] and [tex]c_1 = 8miles[/tex]
The distance between them is:
[tex]d_1 = \sqrt{n_1^2 + c_1^2}[/tex]
[tex]d_1 = \sqrt{6^2 + 8^2}[/tex]
[tex]d_1 = \sqrt{100}[/tex]
[tex]d_1 = 10miles[/tex]
After 1 hour, their new position is:
New = Old + Rate * Time
[tex]n_2 = n_1 + r_1 * 1[/tex]
[tex]n_2 = 6 + 2 * 1 = 8[/tex]
And:
[tex]c_2 = c_1 + r_2 * 1[/tex]
[tex]c_2 = 8 + 1 * 1 = 9[/tex]
So, the distance between them is now:
[tex]d_2 = \sqrt{n_2^2 + c_2^2}[/tex]
[tex]d_2 = \sqrt{8^2 + 9^2}[/tex]
[tex]d_2 = \sqrt{145}[/tex]
[tex]d_2 = 12.04[/tex]
The rate of change is:
[tex]\triangle d = d_2 -d_1[/tex]
[tex]\triangle d = 12.04 -10[/tex]
[tex]\triangle d = 2.04[/tex]
Write an equation and solve for angle G? Show work
Answer:
50
Step-by-step explanation:
Complementary angles mean that the sum of the angles given is 90°. Therefore, as G and H are complementary, this means that G+H=90
G+H=90
(2x+10) + (x+20) = 90
Add values on left side
3x+30=90
Subtract 30 from both sides
3x=60
Divide both sides by 3
x=20
Since we now know the value of x, we can plug that in to G (2x+10) to get 2(20)+10 = 50 = G
Complete the point-slope equation of the line through (-5,7) and (-4,0)
y-7=?
your teacher for the discussion-based assessment.
In circle D, LEDH LEDG.
1. Determine the length of JG using
circle D.
Show your work and write out your
justification.
E
57"
9
Be prepared to answer questions
about additional angles, arcs and
segments from circle D.
F
D
J
H
669
G
2.
In OK, mZHKG=x+ 10 and
MZIKI = 3x - 22. Find m F).
74K
F
F
3. Find MLADB
OG with FA and FE tangent at A and E.
4. Find m2ABD
А
F
5. Find mzAFE
82
B
G
6. Find mLACE
E
1489
H Н
VOD
Answer:
3
Step-by-step explanation:
You buy 4 pencils at $0.30 each. You receive $0.80 back in change. How much money did you give
the cashier?
Total cost of the pencils is the number of pencils x the price per pencil:
4 x 0.30 = $1.20
Now add what you got back for change:
1.20 + 0.80 = 2.00
You gave the cashier $2.00
12. Mr. Ellis bought several rose bushes
for $65 each. He was charged a $15
delivery fee. If r represents the number
of rose bushes, which expression
can be used to find the total cost of
Mr. Ellis' purchase?
A 150 - 65
B 65r + 15
c 15(r + 65)
D 651 - 15
Answer:
B
Step-by-step explanation:
Because every rose bush costs $65 and it's charged with a $15 delivery fee.
What are the characteristics of a density curve? Select all that apply.
A. The total area under the curve is always 1.
B. The area between any two points is always 0.5.
C. The curve always falls on or above the horizontal axis.
D. The percentage of values between any two points is the area of the figure
formed by the curve and the x-axis.
Answer:
b
Step-by-step explanation:
From the characteristics of a density curve, option (A), (C), (D) are the correct answers.
What is a density curve?A density curve is a graph that shows probability. It is an idealized representation of a distribution in which the area under the curve is defined to be 1.The area under the curve is equal to 100 percent of all probabilities.
For the given situation,
Properties of density curves
• A density curve is always on or above the horizontal axis.
• The area underneath a density curve is exactly 1.
• The area under a density curve and above any range of values is the
relative frequency of all observations that fall in that range.
Hence we can conclude that from the characteristics of a density curve, option (A), (C), (D) are the correct answers.
Learn more about density curve here
https://brainly.com/question/18345488
#SPJ2
What is 2 3 of 99kg?
Step-by-step explanation:
[tex] \frac{2}{3} \times \frac{99}{1} = 66 \: kg[/tex]
Write the indicated event in set notation.When four coins are tossed, the first three tosses come up the same.[Hint: when four coins are tossed, the following 16 outcomes are possible:HHHH HHHT HHTH HHTTHTHH HTHT HTTH HTTTTHHH THHT THTH THTTTTHH TTHT TTTH TTTT ]a. (HHH, TTT) b. (HHHT, TTTH) c. (HHHT, TTTH, HTTT, THHH) d. (HHHH, HHHT, TTTH, TTTT)
Answer:
[tex]Outcomes = \{HHHH, HHHT,TTTH, TTTT\}[/tex]
Step-by-step explanation:
Given
[tex]S = \{HHHH, HHHT, HHTH, HHTT,HTHH, HTHT, HTTH, HTTT, THHH, THHT,[/tex]
[tex]THTH, THTT,TTHH, TTHT, TTTH, TTTT\}[/tex]
Required
The outcomes where the first three tosses are the same
To do this, we list out the outcomes that the first three are HHH or TTT.
So, we have:
[tex]Outcomes = \{HHHH, HHHT,TTTH, TTTT\}[/tex]
A line contains the points (2,4) and (−6,−2).
Which equation represents the line?
a. y+2=4/3(x+6)
b. y−2=3/4(x−6)
c. y−2=4/3(x−4)
d. y−4=3/4(x−2)
Answer:
D) y-4=3/4(x-2)
Step-by-step explanation:
m=(y2-y1)/(x2-x1)
m=(-2-4)/(-6-2)
m=-6/-8
simplify
m=3/4
y-y1=m(x-x1)
y-4=3/4(x-2)
z =x^2-y^2 for find the domain
Answer:
R^2
Step-by-step explanation:
The domain for z =x^2-y^2 is R^2 ,where is the set of all real numbers.
solve for x in the equation 9- x/4=2
Answer:
9-x/4=2
[tex] \frac{36 - x}{4} = 2[/tex]
[tex]36 - x = 2 \times 4[/tex]
[tex]36 - x = 8[/tex]
[tex] 36 - 8 = x[/tex]
[tex]28 = x[/tex]
[tex]x = 28[/tex]
9 - x/4 = 2
(36 - x)/4 = 2
36 - x = 8
36 - 8 = x
x = 28
I hope you understand...
Mark me as brainliest...
Urelia made a deposit to her checking account. She had $104.00 in currency: $7.64 in coins; and checks for $83.29, $257.77, $1,332.68, and $3,984.05. What
was her total deposit?
$5,769.43
$6,126.43
$5.985.43
$6,432.43
None of these choices are correct.
Answer: $5,769.43
Step-by-step explanation:
For us to get the value of the total deposit, we have to add all the deposits together whether they're cash deposits or check deposit. This will be:
= $104.00 + $7.64 + $83.29 + $257.77, $1,332.68 + $3,984.05
= $5,769.43
Therefore, the total deposit is $5,769.43
At Marco’s school, 5/8 of the students are in the band. What percent of the students are in the band?
Please help will mark BRAINLIEST!!!
Answer:
b, c, a
Step-by-step explanation:
In a triangle, the largest angle is opposite the longest side. The smallest angle is opposite the shortest side.
This triangle has 2 given angles, 50° and 60°.
We can find the measure of the third angle, x.
50 + 60 + x = 180
x + 110 = 180
x = 70
The three angles have measures 50°, 60°, and 70°.
The shortest side is opposite the smallest angle. That is side a.
The longest side is opposite the largest angle. That is side b.
The order from longest to shortest is
b, c, a
An angle measures. What is the measure of its complement? (b) An angle measures 48 . What is measure 26 of its supplement?
The triangle has area of 72cm^2 and base of 18cm find the perpendicular height of the triangle
Answer:
The height is 8 cm
Step-by-step explanation:
The area of a triangle is
A = 1/2 bh
72 = 1/2 (18)h
72 = 9h
Divide each side by 9
72/9 = 9h/9
8 = h
The height is 8 cm
Answer:
8cm
Step-by-step explanation:
let y represent height
Area of a triangle=½base×height=72cm²
72cm²=½×18cm×y
72cm²=9cmy
72cm²/9cm=9cmy/9cm
8cm=y