Answers
Answit is d have a good day
Step-by-step explanation:
Answer:
14
Step-by-step explanation:
45 : 30
(x+8) : (3x-9)
- so, when you multiply 30*(x+8) and 45*(3x-9)
135x - 405 = 30x +240
- rearrange and solve and you get x= 6 (rounded off)
- replace x by 6 in (x+6)
= 14
Related Questions
A teacher gave a unit test to both of her statistics classes. The mean test grade for Class A was 77 points, with a standard deviation of 5 points, whereas the mean test grade for Class B was 80, with a standard deviation of 7 points. Kyle, in Class A, received an 82 on the test, and Caleb, in Class B, received an 87. Whose performance on the unit test was better relative to their class?
Answers
Answer:
i think they would be the same
Step-by-step explanation:
77+5=82 or 77-5=72
so he is within the range of 72-82
80+7=87 80-7=73
so he is also within the range of 73-87
Since both Kyle and Caleb scored 1 standard deviation above their respective class means, we can conclude that their performances were relatively equal.
What is standard deviation?A standard deviation is a measure of how far apart the data is from the mean.
A low standard deviation indicates that data is clustered around the mean, whereas a high standard deviation indicates that data is more spread out.
To determine whose performance was better relative to their class, we need to calculate their z-scores, which tell us how many standard deviations a particular score is from the mean.
For Kyle in Class A:
z-score = (82 - 77) / 5 = 1
This means that Kyle's score is 1 standard deviation above the mean for his class.
For Caleb in Class B:
z-score = (87 - 80) / 7 = 1
This means that Caleb's score is also 1 standard deviation above the mean for his class.
Thus, we can conclude that Kyle and Caleb's performances were comparable because they both scored one standard deviation above their respective class means.
For more details regarding standard deviation, visit:
https://brainly.com/question/23907081
#SPJ3
Leslie is taking money out of her savings account to pay for violin lessons. After 3 lessons, her account was down to $155. After 7 lessons, she only had $95 left. How much does each lesson cost
Answers
Answer:
pog champ
Step-by-step explanation:
pog champ follow to.myinnit on twitch for a cookie
I did,,,
155 - 95 = 60
60/ 3 = 20
Because there were 3 lessons in between her 3rd and 7th lesson
Hope this helps! :)
Find the length line segment between the points (-2,-1) and (5,6)?
Answers
Answer:
7√2 units
Step-by-step explanation:
( [tex]x_{1}[/tex] , [tex]y_{1}[/tex] ) and ( [tex]x_{2}[/tex] , [tex]y_{2}[/tex] )
d = [tex]\sqrt{(x_{2} -x_{1} )^2 + (y_{2} -y_{1})^2 }[/tex]
( - 2 , - 1 )
( 5 , 6 )
d = [tex]\sqrt{(-2-5)^2 + (-1-6)^2}[/tex] = 7√2 units
Explain the difference between parallel and perpendicular lines in terms of their slopes. What form of equation of a line is easiest to determine slope?
Answers
Answer:
Parallel lines have the same slope, while perpendicular lines have completely opposite slopes. So a line has a slope of 2, a parallel line would have a slope of 2, and a perpendicular line would have a slope of -1/2. The easiest form to identify the slope is standard form because it shows the slope within the equation with out having to solve the equation or convert it into another form.
Solve the following inequality.Show your work. 2m + 6 > 7(m – 2)
Answers
Subtract 7m
-5m + 6 > -14
Subtract 6
-5m > -20
Divide by -5. And since we are dividing by a negative, the sign must be flipped.
m < 4
a rectangle prism with a length of 5 inches, a width of 4 inches, and a height of 3 inches.
Answers
Answer:
▶◀
Step-by-step explanation:
n/a bc you didn't explain wut to do
Is my math correct? It's about slop and proportions.
Answers
Answer:
yes! it's correct. Congrats :)
Step-by-step explanation:
Answer:
Your answer is correct.
Step-by-step explanation:
(−1,4);(3,0)
(x1,y1)=(−1,4)
(x2,y2)=(3,0)
m= y2−y1 /x2−x1
0−4 /3−(−1 )
−4 /4 = −1
-6, -5, -3, -1,... what comes next?
Answers
Answer:
1
Step-by-step explanation:
What’s the slope of the line ?
Answers
Answer:
y= 2x-2
Step-by-step explanation:
Answer:
-1
Step-by-step explanation:
Find two lattice points
I chose (-2, 0) and (0, -2)
Since you are using a graph, you don't need an equation.
Starting from (-2, 0), you go down -2 points and 2 across to get to the second point.
-2/2 = -1
In which situation do the quantities combine to make 0?
1 point
Juan spent $20. The next day, he earned $10 per hour for 2.5 hours of babysitting.
Erica deposited $75 into her savings account. She withdrew $75 the following week.
The predicted high temperature for a winter day is 7 degrees. The actual temperature was 10 degrees lower.
A deep-sea diver descends 15 meters, pauses, and then descends another 15 meters.
Answers
Answer:
It would be Erica deposited $75 into her savings account. She withdrew $75 the following week.
Step-by-step explanation:
Because if she deposits that would make her have $0
What is the name of each labeled part?
B
С
B
C
E
A
E
D
Answers
Answer:
I know that B is the nucleas but I don't know the rest sorry
Answer:
A: dendrite
B: cell body
C: axon terminal
D: axon
E: nucleus
Step-by-step explanation:
F(x) = -x^2 - 9x
Find f(-2)
Answers
Step-by-step explanation:We are given with two functions: f(x) = 9x - 2 and g(x) = -x + 3. In this problem, the expression of f(g(x)) is asked. We first substitute g(x) to f(x) resulting to f(-x + 3) = 9 (-x + 3) - 2 equal to -9x + 27 -2 or f(g(x)) = -9x + 25.
1 point
Question: A school purchased a total of 112 student tickets and adult
tickets for a field trip to a play. The price of each student ticket was $3.50,
and the price for each adult ticket was $6.50. If the school spent a total of
$437, how many student tickets and adult tickets did the school purchase?
92 student tickets; 20 adult tickets
97 student tickets; 15 adult tickets
O
102 student tickets; 10 adult tickets
88 student tickets; 23 adult tickets
Answers
Answer:
the answer is 97 student tickets and 15 adult tickets
Step-by-step explanation:
True or False. a radius is a segment that connects any point on the circle to the center of that circle.
Answers
Answer:
True
Step-by-step explanation:
Answer:
true
Step-by-step explanation:
Think about it as a disk, if you were to draw a line starting at the edge of the disk and tried to draw it to the center of it you would be able to do it from any point along the outside of the circle.
The width of a rectangle is 3/4 it’s length. The perimeter of the rectangle is 350 ft. What is the length, in feet of the rectangle
Answers
Answer:
20
Step-by-step explanation:
PLZ ANSWER BOTH QUESTION
Answers
Answer:
The value of 2 pennies and 3 dimes is 17¢. The value of p pennies and d dimes is (p×1)+(d×5)
Step-by-step explanation:
Use the formula (p×1)+(d×5).
Insert the number of pennies and dimes into the formula: (2×1)+(3×5).
Solve the equation: (2×1)+(3×5)
= 2+(3×5)
= 2+15
= 17
So, there are 17¢ in 2 pennies and 3 dimes.
The answer for question 2 is the formula written above.
-1/2x = -4/5
Help please
Answers
Answer:
x = 8/5
Step-by-step explanation:
first multiply both side by -1, it makes both side positive
1x/2 = 4/5
now multiply both sides by 2 to get the x by itself
x = 8/5
if they want improper fraction x = 1[tex]\frac{3}{5}[/tex]
Answer:
x=-8/5
Step-by-step explanation:
77÷ -11
20 points!!!!!
Answers
Answer:
7 time 11 is 77 so 77 divided by 11 is 7
Step-by-step explanation:
Answer:
It's -7
Step-by-step explanation:
What alternatives did the colonists already try in their appeal to Great Britain, according to the text? A They have attempted to reason with the British as equal citizens. B They have pledged eternal loyalty to the crown, in hopes of perhaps gaining British favor. C They have tried many things, including minor insurrections and conflicts. D They have tried many things, including petitions, argument, and pleas to parliament and to the crown
Answers
Answer:D. They have tried many things, including, petitions, argument, pleas to parliament and to the crown
Step-by-step explanation:
is this a function? x= y-7
Answers
Answer:
yup it passes the line test
Step-by-step explanation:
Graph.
y= 53x–4
Apparently this is way to short and I have to put in 20 more characters to get a "great" answer *eye roll* sooooooooooo blah blah blah balh there more than 20
Answers
Answer:
sorry
Step-by-step explanation:
why the hell do our teachers do this to us ;(
Are the fractions equivalent?
63/72. 7/9
Answers
Answer: 9 goes into 63 7 times, but 9 does not go into
72 9 times, so the answer is no.
Step-by-step explanation:
multiple choice question:
simplify √-72 .
A) -6√2
B) 3√-2
C) 3√2i
D) 3i√2
Answers
Answer:
im really not to sure on this one. sorry dude
Step-by-step explanation:
Closest one to the answer is A
4 multiple ( 2+3) square 2
Answers
Answer:
100
Step-by-step explanation:
4 x (2 + 3)[tex]^{2}[/tex]
for this equation u have to use PEMDAS so u have to solve the parenthesis first which is 5 then exponets which is [tex]5^{2}[/tex] which is 25 and 24 x 4 gives you 100
hope this helps, if im wrong sorry
4*(5)^2
4*25
100
simplify -50 1/2+(-12.3)
Answers
Answer:
-62.8
Step-by-step explanation:
-50 1/2 + (-12.3)
= -101 / 2 - 12.3
= -101 - 24.6
2
= -125.6 / 2
= -62.8
Answer: you can use a website called math. way! Make sure its online like the website
Step-by-step explanation:
its a mathpage and it does algebra!
John is performing an experiment in which a solution alternates between a clear color and a bluish-purple color at a regular time interval. He observes that the time interval between color changes is 30 seconds (s). Sally replicates the experiment with the same solution, but at a temperature that is 10 degrees Celsius (°C) higher. What is the most likely time interval between color changes at this higher temperature?
Answers
Answer:
15 seconds
Step-by-step explanation:
The given parameters for the experiment are;
The time it takes the solution to change from a clear color to a bluish-purple color at a given temperature = 30 seconds
The temperature at which Sally replicates the experiment with the same solution = 10°C higher than the temperature the experiment was carried out by John
Given that the process involves a change in color, which is a characteristic of a chemical reaction, and that the rate of a chemical reaction increases as the temperature of the reacting system is increased, we have time it takes for the solution to change color at a temperature increased by 10°C, will be a time lesser than 30 seconds
Answer:
B
Step-by-step explanation:
Helppp pleaseee:))))
Answers
1a
2f
3g
4d
5b
6e
7c
I hope this is the answer you were looking for.
1.f(x)=0,5x+3 represents a function, Evaluate the function if f(12), *
A. 9
B. 3.04
C. 18
D. 15.5
Answers
Solve for x!!!! (see attached picture) HELP!!!
Answers
What is the length of AB?
B
6x
3x + 9
65°
/65°
A
C
A. 18
B. 12
C. 3
D. 9
Answers
Answer: 18
That's the answer on
Answer:
A
Step-by-step explanation: