Answers
Answer:
120
Step-by-step explanation:
Related Questions
For the 1,000-meter running event, Abby's mean time is 4.5 minutes with a standard deviation of 0.75 minutes. For the 800-meter event, Abby's mean time is 3.2 minutes with a standard deviation of 0.4 minutes. In the last track meet, Abby ran the 1,000-meter race in 4.1 minutes and the 800-meter race in 3 minutes. In which event did Abby have a better performance?
Answers
Answer:
He performed better in the 800 m race
Step-by-step explanation:
Obtain the standardized score for each event :
Zscore = (score - mean) / standard deviation
1000 meter :
Mean = 4.5 ; Standard deviation = 0.75 ; x = 4.1
Zscore = (4.1 - 4.5) / 0.75
Zscore = - 0.4 / 0.75 = - 0.5333
800 meter :
Mean = 3.2 ; Standard deviation = 0.4 ; x = 3
Zscore = (3 - 3.2) / 0.4
Zscore = - 0.2 / 0.4 = - 0.5
-0.5 > - 0.533
Hence, he performed better in the 800 m race
Answer:
Abby had a better performance in the 800-meter because this z-score was closer to the mean than the z-score for the 1,000-meter.
Step-by-step explanation:
did it on egde
Kari has 20 points. This is 4 times as many points as Shane has.
How many points does Shane have?
Answers
Answer:
80
Step-by-step explanation:
20 × 4 = 80
Answer:it is five
Step-by-step explanation:just divide 20 by 4
the sides lenghths of a triangle are 9, 12, and 18 is this a right triangle?
Answers
Answer:
By virtue of the Pythagorean Theorem, in a right triangle the sum of the squares of the smaller two sides equals the square of the largest side. Only 9, 12, and 15 fit this rule.
(BRAINLIESTTTTT PLS ANSWERRRR DUE IN 5 MINS!!!!) Michelle and Cameron are selling popcorn for a school fundraiser. Michelle sold 10tins of cheese popcorn and 8tins of caramel popcorn for a total of $446. Cameron sold 22tinsof cheese popcorn and 11tins of caramel popcorn for a total of $803. Write a system of equations to determine the cost one tin of cheese popcorn and one tin of caramel popcorn. Show all your work.
Answers
one tin of cheese 20$ and one tin of Carmel 27$
simplfy
(9b + 5) + (3b – 6)
Answers
2) pls help me determine the value
Answers
Answer:
The answer is B
Step-by-step explanation:
When you add two negatives together you get a negative
Mike compared the y-intercept of the graph of the function
f(x) = 5x + 12 to the y-intercept of the graph of the ilnear function that
includes the points from the table below. What is the difference when the y-
intercept of f (x) is subtracted from the y-intercept of g (x)?
Х
1 3 5 6
g(x) 10 14 18 20
Answers
Answer:
-4Step-by-step explanation:
Given function
f(x) = 5x + 12From the table we get the function g(x), use pairs (1, 10) and (3, 14)
The slope:
m = (14 - 10)/(3 - 1) = 4/2 = 2The y-intercept:
10 = 2(1) + bb = 10 - 2b = 8The function g(x) is found as:
g(x) = 2x + 8The y- intercept of f (x) is subtracted from the y-intercept of g (x):
8 - 12 = -4Answer:
(the answer is • -4)
...
please help me thank you
Answers
Answer:
7<x<14
Step-by-step explanation:
Answer:
heh heh that's a hard one
Please answer the question in the image
Answers
Answer:
- [tex]\frac{1}{14}[/tex]
Step-by-step explanation:
Given
[tex]\frac{1}{2}[/tex] × - [tex]\frac{1}{7}[/tex] ( multiply numerators and denominators together )
= - [tex]\frac{1(1)}{2(7)}[/tex]
= - [tex]\frac{1}{14}[/tex]
Expression A: 4x + 5 Expression B: 2 + 4x + 3 Which statement can be used to show that these expressions are equivalent?
Answers
Answer:
Step-by-step explanation:
12. Sydney Star bought a new sweatshirt for $42.00. Sales tax was 8%.
After tax, what was the total cost she paid for the sweatshirt? *
$8.00
$38.64
$3.36
$45.36
Answers
Answer:
$45.36
Step-by-step explanation:
100 + 8 = 108
42/100 X 108 = 45.36
100 + 8 = 108
42/100 X 108 = 45.36At the class party, each student will be given a container filled with 8 5/8
ounces of juice. There are 25 students in the class. How many ounces of juice
does the teacher need to buy?
Answers
Answer:
215 5/8 ounces of juice
Step-by-step explanation:
The options for A , B , C , and D will be below:
A : 2 , 4 , 6 , 0 , 1 , 8
B: 2 , 4 , 6 , 0 , 1 , 8
C: 2 , 4 , 6 , 0 , 1 , 8
D: 2 , 4 , 6 , 0 , 1 , 8
Answers
Answer:
8 4 2 0
Step-by-step explanation:
There is a bag filled with 4 blue and 5 red marbles.
A marble is taken at random from the bag, the colour is noted and then it is not replaced.
Another marble is taken at random.
What is the probability of getting exactly 1 red?
Answers
Answer:
im not sure but this is just a guess (please keep it in mind)
Step-by-step explanation:
4+5= 9 marbles all together
9-1= 8
1 in 8? or 1 in 9
this is becuase we dont know if the one that was taken out randomly first wasnt a red or not but then i could be wrong and the fact if it was red or blue in the first place might not even matter. it really depends.
f(x) = 2^x
what is the domain ?
range ? asymptote ? and transformation
Answers
y=2x
Step-by-step explanation:
I dont know what else there is sry
Brainlist for correct answer!
Answers
Answer:
answer is c
Step-by-step explanation:
the answer is B.b=5.5mA=70.8mc82.2
1 (x + 4) = 20
x = 48
Help please.
Answers
Answer:
X actually equals 16 becaausw if yiu add 16+4 you get 20 and then you have to multiply 20 by 1 and you get 20 so x=16
Answer:
x = 16
I dont quite understand the x = 48 situation? But thats wrong if that's your answe
Step-by-step explanation:
So you have to find out what x is
in order to do that you have to work out the equation and whatever you do to one side you must do to the other side
simplify 1(x+4) = 20
x + 4 = 20
in order to get rid of 4 on one side you have to subtract it on both sides
so x = 16
Boris chosen three different numbers. The sum of the numbers is 36. One of the numbers is a cube number the other two numbers are factors of 20. Find the three numbers chosen by Boris. Write the numbers in ascending order
Answers
Answer:
27,4,5
Step-by-step explanation:
27³=3
4×5=20
27+4+5=36
help pls :( DO IT FOR A NUGGET
Answers
Answer:
natural numbers. they are also called counting numbers. hope this helps :)
Part D
Qulana made five equal montly payments from her bank account. Which rational number shows something being removed five times?
Answers
Answer:
-5 is the answer!!!!!
Step-by-step explanation: it jist is
Answer:
-5
Step-by-step explanation:
its negative 5
Select the correct solution for the expression.
2
5
+
3
8
Answers
Answer:
25+38= 63
Step-by-step explanation:
Used a calculator.
Please help I will mark you as brainlist it’s emergency
Answers
Answer:
d
Step-by-step explanation:
jayfeather friend me
Answer:
35+27n
Step-by-step explanation:
hope this helps lol D is the correct answer
ANSWER QUICK PLS Expand the expression: -11 (3c - 2d) using the Distributive Property
Answers
Jose has scored 851 points on his math tests so far this semester. To get an A for the semester, he must score at least 950 points.
Answers
Answer:99
Step-by-step explanation:
This answer is 99. If Jose has scored 851 points and he needs 950, you subtract 950-851 which is 99. He needs 99 more points to obtain an A.
Answer:
99
Step-by-step explanation:
trust me.........................
find the inequality by the graph
Answers
Answer:
[tex]y>\frac{1}{3} x - 3[/tex]
Step-by-step explanation:
So we first look at the dotted line in the graph, which is [tex]y=\frac{1}{3}x-3[/tex]. Next, we see that the blue area is the area above the line, so it should be [tex]y>\frac{1}{3} x - 3[/tex].
You have to work on Distributive property 14(5+4)
Answers
explanation: solved it
I NEED HELP WITH THE CHART!!! URGENT HELP PLEASE!!!!!!!!!!!!!!!!
60 people attend a game night. Everyone chooses to play chess, a two-player game, or cribbage, a four-player game. All 60 people are playing either chess or cribbage.
Complete this table showing some possible combinations of the number of each type of game being played:
Answers
Answer: I got 14, 9, 0, then 14. but you might want to wait on someone to double check that
Step-by-step explanation:
Answer:
Step-by-step explanation:
40000 people visited the Emirates Park Zoo in Abu Dhabi last Year. Ratio of number of visitors of children to women to men is 4: 7: 9. Find the number of children, women and men who visited the zoo.
Answers
Answer:
40000 total visitors
Step-by-step explanation:
Let p represent a multiplier. Then the total number of visitors to the park is
4p + 7p + 9p = 40000.
This simplifies to 20p = 40000, so that p = 2000.
Then the number of children who visited is 4p = 8000; the number of women is 7p = 14000, and the number of men is 9p = 18000.
Summing up these results gives us the total number of chidren, women and men who visited the zoo last year: 8000 + 14000 + 18000, or 40000.
A popular Web site reached 7.5 million users during the week of March 7, 2011. This number represents a 33 percent increase from the week before. How many users did the Web site have the week before?
Answers
Answer:
5.7 million
Step-by-step explanation:
Let the number of users be x
x + 33% of x = 7.5 million
x + 0.33x = 7.5 million
1.33x = 7.5
x = 7.5/1.33
x = 5.7 million
En el mes de abril en la cancha Toto Hernández de Cucuta, habrán encuentros de
Basquetbol cada 5 dias y de balonmano cada 4 dias. Qué dia del mes coincidiran
nuevamente los dos deportes si inician el 3 de abril.