could you pls tell me the answer to part a and b thx, and could you also give me a step by step explanation of how you did it?
Answers
Answer:
sure Gigi, as below
Step-by-step explanation:
A)
we want to know the rates. so this like like in MPH (Miles per hour) or feet per second but something that we can compare each walker with the other .... so we want some type of scale that makes sense. what are the given units.... they are distance in miles and time in hours.. so maybe MPH would work for this.
there is a very good, basic formula that you should just remember for this type of problem... I can it the dirt formula... partly b/c it's dirt easy.. and partly b/c it really is about how much dirt you cover.. i mean.. how far you do... in a distance .. and you can use any unit you want... like we'll use miles here.. for our units.. we will you d = rt where d= distance , r= rate and t = time.
d = rt.... notice the formula looks a lot like the word "dirt" handy huh...
use it to make all the walks have a number... their rate... the r in the formula... to compare with, so use your algebra skills to rearrange the formula... to
d/t = r now we can plug in each of the walkers and get a rate to comparr them
Aisha 5/2 = r so 5/2 MPH
Bob 7.5 / 5 = r so 7.5 = 15/2 then (15/2) / 5 = (15/2) * (1/5) ( cross cancel the 15 and 5 so you get (3/2) * (1/1) = 3/2
Bob = 3/2 MPH
Cora = 9 / 3.6 or 9 / 3[tex]\frac{6}{10}[/tex] or (9/1) / ([tex]\frac{36}{10}[/tex]) or (9/1) * (10 / 36) cross cancle the 9 and 36 so you get (1/1) * ( 10 / 4) = 10/4 = 5 /2
Cora = 5/2 MPH
Dylan = 3.75 /2.5 or 3 [tex]\frac{3}{4}[/tex] / 2[tex]\frac{1}{2}[/tex] or (15/4) / (5/2) or (15/4 ) * (2/5) cross cancel the 2 and 4 and also cross cancel the 15 and 5 then, (3/2) * ( 1/1)= 3/2
Dylan = 3/2 MPH
MPH
Aisha = 5/2
Bob = 3/2
Cora = 5/2
Dylan = 3/2
you can now make fair comparisons among the 4 people
B)
d = rt
d/t = r
Emilio = 19.2 / 6 or 19[tex]\frac{2}{10}[/tex] / 6 or (192/10 ) / (6/1) invert and multiply to bring the denominator up (192/10) * (1/6) cross cancle 6 into 192 = 32
so(32/10) * ( 1/1) = 32/10 or 16/5 = 3[tex]\frac{1}{5}[/tex] or 3[tex]\frac{2}{10}[/tex] which is 3.2 MPH
Fala = 10.5 / 3 or 10[tex]\frac{1}{2}[/tex] /3 or [tex]\frac{21}{2}[/tex] / 3 or (21/2) / (3/1) invert and multiply the denominator (21/2) * ( 1/3) , cross cancel 3 and 21 (7/2) * ( 1/1) = 7/2
so now you have all the rates.. how fast they are walking. in Miles per hour and that's what the scale of the number line is.. so, good.. just mark each of their speeds
Bob and Dylan = 3/2 or 1.5 MPH... pretty slow.. huh :P
Cora and Aisha = 5/2 or 2.5 MPH faster but not fast
Emilo 3.2 MPH pretty quick
Fala 3.5 MPH she's fast. :D speed walking
3.2 on the number line is not marked.. 3.25 is.. so just a bit below the 3.25 mark.. that's 3[tex]\frac{1}{4}[/tex] , see it?
all the others are marks on the number line.. just count marks for 1//2s
Related Questions
I need help real quick
Answers
Qkwjeiwowbeueiwjeje
Find the distance between the points (3,7) and (3,2)
Answers
Answer:
5 units.
Step-by-step explanation:
Since the distance is straight up.
You have two options:
Graph those two points and count the spaces separating them
or
Since they have the same x, you would only need to subtract 7-2.
Ms. Alders has $50 to buy prizes for the treasure box in her classroom. She bought 12 packages of stickers, 8 boxes of pencils, and 14 boxes of erasers. Each package of stickers cost $1.50, each box of pencils cost $1.35, and each box of erasers cost $0.80. How much money did Ms. Alders have left after these purchases?
A.$40.00
B.$10.00
C. $16.00
D $34.00
Answers
if you add up the total price for each of the items it totals to $40, she has $50 so $50-$40=$10
WILL GIVE BRAINLEST!!!!!
On Saturday, Joe ran (M) miles in 1.5 hours. On Sunday, he ran four times as far in six hours. If his average speed for two days is 6 mph, how far did he run on Saturday?
A. 5.3 miles
B. 9 miles
C. 7 miles
D. 13.5 miles
Answers
Answer:
D I'm not sure if it is correct but I'm sorry if wrong Good luck!
Explanation: not really sure but I think it’s one of them
The manufacturers of a dietary supplement claim that their product will help customers lose weight. To test their claim, they select a sample of nine subjects, and their weights are recorded. Then, the ten subjects take the supplement for one month, and their weights are recorded again. The weights, before and after, are listed below: Subject 1 2 3 4 5 6 7 8 9 Before 225 245 188 210 282 275 230 195 190 After 215 240 188 212 175 260 225 200 185 Assuming that this data is used to conduct a hypothesis test to test the manufaturers' claim, what would be the test statistic
Answers
Answer:
Assuming that this data is used to conduct a hypothesis test to test the manufacturers' claim, the test statistic we an use is:
the paired sample t-test.
Step-by-step explanation:
a) Data and Analysis:
Subject Before After
1 225 215
2 245 240
3 188 188
4 210 212
5 282 175
6 275 260
7 230 225
8 195 200
9 190 185
b) The paired sample t-test is used to compare the means from the same dataset but at different times (say, one month apart). It supports the comparison of sample data before and after the data subjects have taken the dietary supplement. When the t-value is high, it is an evidence that the null hypothesis should be rejected. The higher value of the t-test, therefore, indicates that there is a large difference between the two sample sets. On the other hand, a small t-value shows similarity between the two sample sets.
от
Background
14/15 -
Wesley walked 11 miles in 4
hours.
If he walked the same distance every hour,
how far did he walk in one hour?
Write your answer:
a. Using only miles
b. Using a whole number of miles and a whole number of feet
Answers
Answer:
2.75 miles, 14520 feet
Step-by-step explanation:
11 miles/4=2.75
1 mile=5280 feet
2.75 miles=14520 feet
Write 3 ratios equivalent to 2/5
Answers
Answer:
4/10, 6/15, 8/20
Step-by-step explanation:
10 POINTS FOR THE CORRECT ANSWER PLEASE HELP ME
Answers
Answer:
10.3
Step-by-step explanation:
6²+b²=9²
36+b²=81
b²=81-36
b²=45
b=√45
b=6.7
So CE is 6.7.
6²+b²=7²
36+b²=49
b²=49-36
b²=13
b=√13
b=3.6
so EA is 3.6
AC = CE+EA = 6.7+3.6 = 10.3
What is the answer please help me no links
Answers
Answer:
D)75miles
Step-by-step explanation:
they were both traveling at 75 miles per hour and Kristin drove one hour more than Todd
D) 75 miles
Step-by-step explanation:
Todd drove 375 miles in 5 hours (75 mph). Kristin drove the same speed (75 mph) in 6 hours.
75 mph x 6 hours = 450 miles
450-375= 75 more miles
Muhammad spent $45 buying three pizzas and two orders of wings for his roommates. Each pizza cost twice as much as the wings +1 dollar what does one order of wings cost?
Answers
so I did $45 divided by 3 and got $15 I then divided $15 by 2 since the cost of one pizza is the cost of the wings plus $1 so you get $7.50 so you add $7.50 plus 1 and you get $8.50 therefore one order of wings in $8.50
Find the area of this parallelogram
Answers
Answer:
140 cm²
Step-by-step explanation:
The height of the parallelogram is 10cm . And its base is 14cm .We know that the area of parallelogram is product of base and height .
⇒ Area = base × Height
⇒ Area = 14cm × 10cm
⇒ Area = 140 cm² .
Hence the area of the parallelogram is 140 cm² .If the price of onions is $8 per pound, how much would 4.7
pounds of onions cost?
Answers
Answer:
37.6 dollars
Step-by-step explanation:
4 pounds = 32 dollars
0.2 pound = 1.6 dollars
0.5 = 4 dollars
0.1 = 0.8 dollars
help me for a brianly
Answers
Answer:
32 yd²
Step-by-step explanation:
because 8 • 4 is 32 so it's 32 yd²
Answer:
A = 32 yds^2
Step-by-step explanation:
We know the formula for the area of a rectangle is
A = lw where l is the length and w is the width
A = 4 yds * 8 yds
A = 32 yds^2
Airlines monitor the causes of flights arriving late. A total of 75% of flights are late because of weather, while 35% of flights are late because of ground operations. A full 10% of flights are late because of weather and ground operations. What is the joint probability that a flight arrives late because of weather and ground operations
Answers
Answer:
36% is the joint probability that a flight arrives late because of weather and ground operations
Step-by-step explanation:
Given
% of flight late because of weather = 0.75
% of flight late because of ground operation = 0.35
% of flight late because of both weather and ground operation = 0.10
The probability of joint probability that a flight arrives late because of weather and ground operations is equal to
p (A and B) + {P(A) * P(B)}
0.10 + (0.75 * 0.35)
0.36
or 36%
Answer:36%
Step-by-step explanation:0.10 + (0.75 * 0.35)=0.36 then turn it to a percent which is 36%.
If F(x) = 5x – 7 and G(x) = -2x+9, what is F(G(x))?
A. -10x+38
B. 10x2 -59x+63
C. -10x2 +59x-63
D. -10x+23
Answers
A traveling circus is moving in a train consisting of 20 cars, which were randomly adjoined to each other. 2 cars are carrying clowns, 2 cars house trapeze artists, 4 are reserved for lions, 4 - for bears, 4 - for elephants, and 4 for tents and provisions. What is the probability that no elephant or bear car precedes the first car with lions
Answers
Answer:
the no elephant or bear car precedes the first car with lions is 0.60
Step-by-step explanation:
The computation of the probability is shown below:
= 1 - (no depend or acrobat car precedes)
= 1 - (4 ÷ 20 + 4 ÷ 20)
= 1 - 8 ÷ 20
= 20 - 8 ÷ 20
= 12 ÷ 20
= 0.60
Hence, the no elephant or bear car precedes the first car with lions is 0.60
The same would be considered and relevant too
Imagine that a researcher correctly computes a correlation coefficient to quantify the relationship between two variables. In the data set that she works with, low scores on Variable X tend to be paired with low scores on Variable Y, and high scores on Variable X tend to be paired with high scores on Variable Y. Based on this data set, what type of correlation coefficient should the researcher expect to find
Answers
Answer:
Positive value of correlation Coefficient
Step-by-step explanation:
The correlation Coefficient value, R is a correlation measure which gives information about both the strength of association between two variables and also the type of association between them (negative or positive). R has a standardized value which ranges from - 1 to +1
Negative relationship between variables are depicted with negative (where one variable decreases as the other increases) R value while positive association (increase in one variable means leads to increase in the other variable) are depicted with positive R values.
Therefore, for the relationship described above, the correlation Coefficient will be positive.
please help me i really need help please help me please
Answers
Answer:
F'=(1,-5)
Step-by-step explanation:
First off, F is moved 4 units right and 2 units down: add 4 to the x component of the coordinate and take 2 from the y component:
-3+4=1
7-2=5
So our point is (1.5) before it is reflected over the y-axis.
When a point (a,b) is reflected over the y-axis, it's coordinates change to (a,-b). Therefore (1,5) changes to (1,-5)
Need help don’t understand thank you
Answers
Answer:
1: mean equals 17.417, median is 12.75, mode is 8.2, range is 33, the minimum is 8.2 the maximum is 41.2. The IQR is 16.55, the quartiles is q1: 8.95, q2: 12.75, q3 is 25.5, there are no outliers.
2: the best middle is 12.75 because the median is usually the middle number but if you orgainze the numbers there will be two but you will end up getting 12.75 as your median. take the two middle number add together then divide by 2 then that is your answer.
Step-by-step explanation:
GOOD LUCK
to Find the quotient of 4÷1/5 multiply 4 by WHAT???
HURRY PLSS
Answers
Answer:
So 4 ÷ 1/5 = 4 × 5. So your answer is 5.
What is the slope intercept form of the equation below?
2x+5y=40
Oy= 52 - 20
Ox+y=5
y = 2 x + 4
Oy=+8
Answers
y= -2/5x + 8
find the area of the triangle by forming a parallelogram
!NO LINKS, NO FILES!
please :)
Answers
Explain: rectangle 7x5= 35
as this triangle is half of a 7x5 rectangle
35 divided by 2 = 17.5
Type the correct answer in each box.
y у
&
X
1000
Z
1500
The three interior angle measures of this triangle are x=
y=
, and z=
Reset
Next
2021 Edmentum. All rights reserved.
Answers
Answer:
x = 30°
y = 70°
z = 80°
Step-by-step explanation:
[tex]x = 180 \degree - 150 \degree = 30 \degree \\ \\ z = 180 \degree - 100 \degree = 80 \degree \\ \\ y = 180 \degree - (30 \degree + 80 \degree ) \\ \\ y = 180 \degree -110 \degree \\ \\ y = 70 \degree[/tex]
PLEASEEE HELP I WILL MARK YOU BRAINIEST!!!
Answers
Answer:
26
Step-by-step explanation:
duh....
What is the greatest number of pizzas Mrs. Rane can buy?
Answers
Please put how many pizzas there are and how much money he has (please put the full question)
Help me please and B
Answers
Answer:
answer a
Step-by-step explanation:
The angle measures of a triangle are shown in the
diagram.
What is the value of x?
FOR BRAINLIST!!
Answers
Reason: you divide 60=2x which makes x=30
Which expression has the greatest value?
2,067 + 49
20 x (2,067 + 49)
1/3x (2,067 +49)
(2,067 +49) x 21
if you help me you will get brainlyest
Answers
Answer:
(2,067 + 49) x 21
Step-by-step explanation:
I did the math for each answer
In the following situation, determine whether you are asked to determine the number of permutations or combinations. Then do the calculation.
How many ways are there to pick a subset of 3 different letters from the 26-letter alphabet?
a.
Combination; Subscript 23 Baseline C Subscript 3 Baseline = 1771
b.
Permutation; Subscript 23 Baseline P Subscript 3 Baseline = 10626
c.
Permutation; Subscript 26 Baseline P Subscript 3 Baseline = 15600
d.
Combination; Subscript 26 Baseline C Subscript 3 Baseline = 2600
Answers
Answer:
I'm not sure, but I put down B
Step-by-step explanation:
Helpp plzz will mark brainlrast
Answers
bro i will do it but just tell me the answer to question 1 cuz thats what it is referring too