Complete question is;
In a study investigating a link between walking and improved health, researchers reported that adults walked an average of 873 minutes in the past month for the purpose of health or recreation.
Specify the null and alternative hypotheses for testing whether the true average number of minutes in the past month that adults walked for the purpose of health or recreation is lower than 873 minutes
Answer:
Null Hypothesis: H0: μ = 873
Alternative hypothesis: Ha: μ < 873
Step-by-step explanation:
From the study, the claim is that the true average number of minutes gotten from the population average in the past month that the adults had walked for the purpose of health or recreation is lower than the average of 873 minutes.
Now, the population study says it's equal to 873 minutes.
Thus, the hypotheses can be written as;
Null Hypothesis: H0: μ = 873
Alternative hypothesis: Ha: μ < 873
HELP PLZ
find the value of x
Answer:
x=8
Step-by-step explanation:
4х + 3y = 12
х = 5y - 20
Solve the system by substitution
Answer:
y=4 and x=0
Step-by-step explanation:
4(5y-20)+3y=12
20y-80+3y=12
23y-80=12
23y=92
y=4
Substitute y as 4 to get x.
Answer:
y=4
x=0
Step-by-step explanation:
4x + 3y = 12
X - 5y =-20
Multiply second equation by 4
4x + 3y = 12
4x - 20y = - 80
Subtract
23y = 92
y = 92/23
y =4
Put the value in first equation
4x + 12 =12
So 4x = 0
Therefore x= 0
Write a linear function for each line that relates to y to x
Answer:
Please check the complete explanation below.
Step-by-step explanation:
We know that the slope-intercept form of the line equation
[tex]y = mx+b[/tex]
where m is the slope and b is the y-intercept
ANALYZING TABLE 1
Part A)
Given table 1
x 0 1 2 3
y 1 3 5 7
From table 1, the y-intercept can be determined by setting x=0 and checking the corresponding y-value.
so at x = 0, y = 1
Thus, the y-intercept is (0, 1).
From the graph, it is clear that the line W has a y-intercept (0, 1).
Therefore, table 1 represents the line W.
Part B)
Taking two points (0, 1) and (1, 3) to find the slope using the formula
m = (y₂-y₁) / (x₂-x₁)
m = 3-1 / 1-0 = 2/1 = 2
now substituting m = 2, and b = 1 in the slope-intercept form
y = mx+b
y = 2x+1
Thus, table 1 represents the line W with the equation line y = 2x+1
ANALYZING TABLE 2
Part A)
Given table 2
x 0 1 2 3
y 0 3 6 9
From table 2, the y-intercept can be determined by setting x=0 and checking the corresponding y-value.
so at x = 0, y = 0
Thus, the y-intercept (0, 0).
From the graph, it is clear that line F has a y-intercept (0, 0).
Therefore, table 2 represents the line F.
Part B)
Taking two points (0, 0) and (1, 3) to find the slope using the formula
m = (y₂-y₁) / (x₂-x₁)
m = 3-0 / 1-0 = 3/1 = 3
now substituting m = 3, and b = 0 in the slope-intercept form
y = mx+b
y = 3x+0
y = 3x
Thus, table 2 represents the line F with the equation y = 3x
ANALYZING TABLE 3
Part A)
Given table 1
x 0 1 2 3
y 2 3 4 5
From table 3, the y-intercept can be determined by setting x=0 and checking the corresponding y-value.
so at x = 0, y = 0
Thus, the y-intercept (0, 2).
From the graph, it is clear that line N has a y-intercept (0, 2).
Therefore, table 3 represents line N.
Part B)
Taking two points (0, 2) and (1, 3) to find the slope using the formula
m = (y₂-y₁) / (x₂-x₁)
m = 3-2 / 1-0 = 1/1 = 1
now substituting m = 1, and b = 2 in the slope-intercept form
y = mx+b
y = (1)x+2
y = x+2
Thus, table 2 represents the line N with the equation y = x+2
Find the h.c.f by division method:
399, 665, 1463.
Help!! Teachers,students,etc
Answer:
6 8 8 8 89 9 8 8 66 4 4 4 57 8c8 7 54
Out of 40 students in class 8,20% were absent.How many students were present?
Understanding:
The total number of students is 40. 8.20% of them were absent, which means the rest were present, or in other words, (100-8.20)% were present or 91.8%. We can find the actual number of present students by multiplying the percentage of present students by the total number of students.
Solution:
Present Percentage = 91.8% or [tex]\frac{91.8}{100}[/tex]
Present Students = [tex](\frac{91.8}{100})(40)=36.72[/tex], since we are dealing with people we have to round it, so the present students are actually 37.
Find the value of two numbers if their sum is 17 and their difference is 3.
Step-by-step explanation:
x+y=17 (First equation)
x-y=3 (Second equation)
Solving Equation (i)
x+y=17
x=17-y(First equation)
Putting value of x in equation (ii)
x-y=3
x=3+y
17-y=3+y
17=3+y+y
17=3+2y
2y=17-3
y=14/2
y=7
Putting value of y in equation(i)
x=17-y
x=17-7
x=10
The dot plot show the heights of the players on two basketball teams
Answer:
Okay and? im confused there is no dot plot or question here...
Step-by-step explanation:
Answer:
H. Team B has a greater range in player heights than Team A has.
Step-by-step explanation:
just did the quiz
Answer this thanks!!!!
Answer:
B
Step-by-step explanation:
$65×6%=$3.90
$3.90+$65=$68.90
m I right
How do you convert a rational exponent into a radical? Use proper terminology (numerator, denominator, index, radicand, power).
Answer: 1. Well, for one they both have a 'radicand' and you can arrange both of them in a fraction form.
2. Graph is increasing, there's an asymptotic value, the domain is all real numbers, the range is y > 0. If you add a constant, you are shifting it vertically, which means it's y-intercept will change by the magnitude of the constant.
3. Linear functions are a straight line with one definite slope. Exponential functions are basically curves with their slopes, not constantly, but changing. As you increase your x-values, the linear functions lacks behind, and the exponential one becomes very large.
4. I really don't know how to explain this, it's kind of confusing.
5. You can use the slope formula: (y2-y1)/(x2-x1). Plug in values, you get:
(12-8)/(4-2). This can be simplified to 4/2 or just 2. That's his average rate of change: 2 balls per day.
6. An arithmetic sequence adds on a specific value every time. For example: {1, 3, 5, 7...}
A Geometric sequence increases every time by a common ratio. For example: {2, 6, 18, 54...}
6. If it's relative to time, then you have a parametric equation dealing with time. Just like that, you can see that 1 variable changes with respect to the other, and that implies parametricity.
Step-by-step explanation:
9514 1404 393
Answer:
[tex]x^{a/b}=\sqrt[b]{x^a}=(\sqrt[b]{x})^a[/tex]
Step-by-step explanation:
The denominator of the fractional exponent becomes the index of the root. The exponent numerator is left as the power of the base. The exponent can be inside or outside the radical.
[tex]x^{a/b}=\sqrt[b]{x^a}=(\sqrt[b]{x})^a[/tex]
sam was charged $1050 in interest on a loan with a 2.5% interest rate. what was the original amount of the loan if he took 5 years to pay it back?
Answer:
$8,400=amount of loan
Step-by-step explanation:
Key:
P=Money borrowed
T=5 years (time passed)
R=0.025 (interest rate)
I=$1050 (interest charged)
Formula: I=P*R*T
Work:
1,050=P*0.025*5
1,050=P*0.125
1,050/0.125=8,400
Check
8,400*0.025*5=1,050
(thank you 7th grade math last year haha)
Grocery store sells tangerines in 2/5 kg bags. A customer bought 4kg of tangerines for a school party. How many bags did he buy
In order to have 4 kg, he must have 20/5 kg. Each bag is 2/5 kg, so 2/5 times 10 is 20/5 or 4kg. Therefore, he bought 10 bags of tangerines for the school party.
Lisa reads 45 pages in 8 minutes. How many minutes will it take her to read 36 pages. Use a proportion or unit rate to solve.
Answer:
Step-by-step explanation:
if Lisa Read
45pages/8minutes she will read 36 pages/? minutes
45/8=5.62 pages/minute
36/5.62=6.4 minutes
roughly 6 minutes
help now fast i will mark brainlest and please don't just put the answer work it out
Answer:
a. 6276
b. 5590
c. 23128
d. 17325
e. 15090
f. 40419
g. 10496
h. 15000
i. 15648
99% sure
Jamison wants to save up his money to buy a car. His parents said they will match what he saves, up to $2000. Jamison mows lawns in the summer, and shovels snow in the winter. He charges $25 per lawn, and $20 per driveway. Let X represent the amount of money that Jamison can save so that his parents will match the amount. Let L represent the number of lawns he mows , and T represent the number of driveways he shovels. Which of the following inequalities need to be part of the system? Select all that apply.
25L + 20d < x
x (greater than or equal to) 2000
20L+25d=x
25L+20d=x
x(less that or equal to)2000
Answer:
25l+20d=x and x ≤ 2000 needs to be part of the system.
Step-by-step explanation:
Given that:
Amount charged per lawn = $25
Number of lawns = l
Amount charged per driveway = $20
Number of driveways = d
Amount saved by Jamison = x
[tex]25l+20d=x[/tex]
Amount given by parents = upto $2000
It means the parents will not give more money than $2000, therefore, we will use less than equal to inequality
x ≤ 2000
Hence,
25l+20d=x and x ≤ 2000 needs to be part of the system.
Identify the angles of rotational symmetry for the figure.
+
Rotational symmetry
Answer:
144
Step-by-step explanation:
Answer:
90 180 270
Step-by-step explanation:
Last year, the debate club had 16 members. This year, the club has 10 members. What is the percent of change in the number of club members?
Answer:
-60%
Step-by-step explanation:
The formula for percent change is [ x2-x1/x1 ].
10-16/10
-6/10 or -0.6
~Multiply by 100%
-0.6 * 100% = -60%
Best of Luck!
ARIHANNAL
Session 2: Calculator
Question 22
X+Y
Line
Guide
Jason took out an $800 loan from his bank two years ago. He recently paid $860 back to the bank. This included the original loan amount
and the simple interest charged to him.
What was the annual interest rate of Jason's loan?
a 3%
D 3.75%
7.5%
15%
Answer:
I think its 3 or 3.75 you can check
Step-by-step explanation:
I really need help on this
Answer:
i think its c i could be wrong but just go with your gut felling
Step-by-step explanation:
write the number with the least value using the digits 1 through 9. use each digit only once. explain your reasoning
Answer: 123456789
Step-by-step explanation:
We need to write a 9-digit number using the digits 1, 2, 3, 4, 5, 6, 7, 8, and 9.
(where we can use each digit only one time)
We want the value of this 9-digit to be the smallest as possible, then:
The largest single value digit (9), needs to be in the smallest value place (in the units place)
The second larger digit (8), must be in the second smallest value place (in the tens)
And so on, then the 9-digit number will be something like:
123456789
Any other permutation will be larger than this number.
Please Help
3x^2-5x+2=0
Answer: C
Step-by-step explanation:
Find the values of a and b so that the linear system has the given solution.
Given Solution: (2, 1)
Equation 1: ax - by'= 4
Equation 2: bx - ay = 10
Answer:
a = 6, b = 8
Step-by-step explanation:
given (2,1)
2a - 1b = 4
-1a + 2b = 10
this gives us:
a + b = 14
solve for a
a = 14 - b
plug into first equations
2(14-b) - b = 4
28 - 2b - b = 4
28 - 3b = 4
24 = 3b
b = 8
now plug b back into your equation for a, and you get:
a = 14 - 8
a = 6
Luis buys 6 pizza's for $36.90 at the Italian restaurant, how much does 1 pizza cost?
Answer:
$6.15 for 1 pizza.
Step-by-step explanation:
The answer is 6.15 because 36.90 divided by 6 is 6.15.
P.S Can I have brainliest?
If I had 1 banana then I ate that banana how many of the banana would I have hint the peal First person gets brainliest
1 peal 0 banana
eeeeeeeeeeeeee
Jada traveled 135 miles in 3 hours. Andre traveled 228 miles in 6 hours. Both Jada and Andre traveled at a constant speed.
Answer:
Jada travels faster at a speed of 45mph
Step-by-step explanation:
Jada travels faster at a speed of 45mph
When you divide the overall miles from the time it takes you get the miles per hour.
Jada: 135/3= 45
Andre: 228/6= 38
Jada travels at 45mph as Andre travels at 38mph.
Hope this helps!
Answer:
45
Step-by-step explanation:
ILL GIVE BRAINLIEST IF CORRECT!! Stacey is standing in a field. She walks 11 meters west, 30 meters north, 4 meters west and finally 22 meters south. How many meters is she from her starting point?
Answer:
21 meters
Step-by-step explanation:
Answer:
17
Step-by-step explanation:
Ethan sold 2/3 gallon of lemonade. Kayla sold some lemonade too. Together, they sold
1/4 gallons. Who sold more lemonade, Ethan or Kayla? How much more?
Answer:
Ethan sold more
Step-by-step explanation:
2/3 and 1/4
Simplify to 8/12 and 4/12
8/12 is more
23 x 3 =
57 + 12 =
47 + 22 =
to find the quotient 3/4 by 1/8
0 multiply 4/3 by 1/8
0 multiply 3/4 by 8
0 multiply 4/3 by 8
0 multiply 3/4 by 1/8
PLZ ASAP
Answer: D is 0.93
Step-by-step explanation:
(3/4 x 1/8 = 0.93 ) We are looking for 0.93.
4/3 x 1/8 = 0. 16
4/3 × 8 = 10.6
3/4 × 1/8 0.93
Mrs. Cameron's famous peanut butter cookies call for 1 cup of peanut butter for every 1 2 of a cup of oil. Today, she wants to make a huge batch with 1 cup of oil. How much peanut butter should she use?
Solve the system.
x + 2y – 4z = 4
2x – y + 2z = 3
3x – 8z = -2
Enter answer as ordered triple.
(2,[?],[?])
From second equation :
2x - y + 2z = 3
z = (3 + y - 2x)/2
Putting value of z in equation 1 and 3, we get :
x + 2y - 4( 3 + y - 2x )/2 = 4
x + 2y - 2( 3 + y - 2x ) = 4
x + 2y - 6 -2y +4x = 4
5x = 10
x = 2
Putting value of x in third equation, we get :
8z = 3( 2 ) + 2
z = 1
Putting value of x and z in equation 2, we get :
y = 2( x+z) - 3
y = 2( 1 + 2) - 3
y = 3
Therefore, the answer as an ordered triple is ( 2, 1, 3 ).