Answer:
4
Step-by-step explanation:
What is the slope of the line that passes through the points (-2,1) and (1,-4)?
O 3/5
0 -3/5
0 -5/3
O 5/3
-3
Answer:
-5/3
Step-by-step explanation:
y2 - y1 / x2 - x1
-4 - 1 / 1 - (-2)
-5 / 3
-5/3
Solve. Suppose that 1,000 students took a math examination wherein the maximum score that they can obtain is 100. Their average score is 70 with a standard of the deviation of 5. How many of the students obtained a score from 70 to 95?
Answer:
prolly like 689
Step-by-step explanation:
As per the given data, approximately 499 of the 1,000 students obtained a score from 70 to 95.
What is z-score?A standardized score is an example of a z-score. A z-score is a measure of how far a data point is from the mean in a distribution.
To solve this problem, we need to calculate the number of students who obtained a score from 70 to 95.
First, we need to calculate the z-scores for these two scores using the formula:
z = (score - mean) / standard deviation
For a score of 70:
z = (70 - 70) / 5 = 0
For a score of 95:
z = (95 - 70) / 5 = 5
Next, we need to find the area under the standard normal distribution curve between these two z-scores using a standard normal distribution table or calculator.
The area between z = 0 and z = 5 is approximately 0.499, or 49.9%.
Finally, we can calculate the number of students who obtained a score from 70 to 95 by multiplying this proportion by the total number of students:
Number of students = proportion x total number of students
Number of students = 0.499 x 1000
Number of students ≈ 499
Therefore, approximately 499 of the 1,000 students obtained a score from 70 to 95.
For more details regarding standard deviation, visit:
https://brainly.com/question/23907081
#SPJ3
PLEASE HELP!!
13. Every Friday, milkshakes are on sale at The Ice Cream Shoppe with a 15% discount.
13a) The regular price of a milk shake is $4. What is the discount price?
13b) If the regular price of a shake is X dollars, what is the discount price in dollars?
13c) On your birthday, the discount price of an ice cream cake is $22. What is the regular price?
(*I really need help on this T^T*)
Answer:
13a) $3.40
13b) 0.85X
13c) $25.88
Step-by-step explanation:
13a) When there is a 15% discount, we can say that we are only paying 85% of the original price because out of 100%, 15% is taken away. 85% in decimals is 85/100 = 0.85.
$4 x 0.85 is the discounted price, which is $3.40
13b) In 13a, the price was 4. Now, the price is X. Hence we plug in (substitute) X in for 4, giving us X x 0.85, which we can write as 0.85X
13c) 85% of the cake is $22. To find 100% of the price, we can find 1% of the original price and then multiply that by 100, which gives us 100% of the price.
We know 85% of the original price. Therefore, dividng the price by 85 will give us 1% of the price. 1% = $22/85
Finally, to calculate 100%, we multiply by 100.
22/88 x 100 = 440/17 which is 25.882 in decimals, which we round to 2 decimal places (because it is currency) = $25.88
The label on a bottle of Juice X-Treme states that the bottle contains 15% real fruit juice. How is this percent of real fruit juice written as a decimal?
Answer:
0.15
Step-by-step explanation:
to convert to decimal, divide 15 by 100
15/100 = 0.15
A un grupo de estudiantes se les preguntó -"¿Cuántas horas de televisión vieron la semana pasada?" Aquí están sus respuestas: 17, 10, 18, 18, 12, 16 Hallar la mediana y la media de las horas de estos estudiantes. Si es necesario, redondear las respuestas a la décima más cercana.
Answer:
15.2
mediana=
Step-by-step explanation:
17+10+18+18+12+16=91
91/6 (6 son las respuestas)
mediana= 15.2
10, 12, 16, (16.5) 17, 18, 18
media= literalmente en Medio de los numeros,
16.5
find the missing side length. leave your answers as radicals in simplest form. show work!!
Answer:
v = 3√6
u = 6√3
Step-by-step explanation:
v = 3√6 because it is an isosceles triangle
u² = 2(3√6)²
u² = 108
u =√108 = 6√3
HELP! PLEASE! 35 POINTS
Answer:
Please provide image
Step-by-step explanation:
The image is not shown.
find the total surface area of the shape
Answer:
510 ft²
Step-by-step explanation:
in the triangle
base (b) = 5 ft
height of the triangle (h1) = 12 ft
height of the prism = 15 ft
Now
Lateral surface area (LSA)
= perimeter of triangular base * height
= ( 13 + 5 + 12) * 15
= 450 ft²
Total surface area
= LSA + 2 * area of triangular base
= 450 + 2 * 1 / 2 * b * h1
= 450 + 5 * 12
= 450 + 60
= 510 ft²
Hope it will help :)❤
Plzz help will mark brainiest Don't do it for the points plzz i really need help
Answer:
A
Step-by-step explanation:
(-3,13) and (4,-15) have a slope of 11.
Write √7 using rational exponents
Answer:
[tex]7^{\frac{1}{2} }[/tex]
Step-by-step explanation:
rewritten using rational exponents
Jesse ran 2⁄4 of a mile on Monday, 2⁄3 of a mile on Tuesday, and 2⁄8 of a mile on Wednesday. Which list orders the fractions from least to greatest?
Answer: 2/8, 2/3, 2/4
Step-by-step explanation:
Think of an example of an externality and its effects on the third party.
Answer:
Negative consumption externalities. When certain goods are consumed, such as demerit goods, negative effects can arise on third parties. Common example include cigarette smoking, which can create passive smoking, drinking excessive alcohol, which can spoil a night out for others, and noise pollution.
Amy and Jenny shared a pizza. Amy ate 1/8th of the pizza and jenny consumed 3/8th of it. What fraction of the pizza did the girls eat in total?
Answer:
In total they ate 4/8 of the pizza. Meaning that together they ate 1/2 of the pizza.
Step-by-step explanation:
1/8 plus 3/8 equals 4/8 which is equal to 1/2.
The Statue of Liberty is about 300 feet tall and about 30 feet wide. The town of Unionville is building a smaller model for their Fourth of July celebration. Unionville's statue will be 3 feet wide.
Answer:
Step-by-step explanation:
The width of the actual statue is 30 feet and that of the model is 3 ft. What is the scale? 3 ft divided by 30 ft is 1/10.
The smaller model will be 1/10 the size of the actual Statue of Liberty.
Answer:
Solution :-Tall : Width
300 : 30
x : 3
By cross multiplication
3(300) = 30(x)
900 = 30x
900/30 = x
30 = x
[tex] \\ [/tex]
805 x 3
sssssssssssssssssss
Answer:
2415
Step-by-step explanation:
805 x 3
2415
Helpppppp please mmmmmmm
Step-by-step explanation:
Please type or post your question....
hope you might understood
A campus courtyard is in the shape of a rectangle and consists of grass surrounded by a concrete path. The dimensions of the
entire courtyard are 25 ft. by 20 ft. The concrete path is 3 feet wide all the way around. The school decides to replace the
grassy area. A landscaping company charges $.20 per square foot for grass and $.60 per square foot to install it.
Approximately how much would the school save if the math club volunteered to install it instead of having the landscape
company install it?
Answer:
I think they'd be saving approximately $300
Step-by-step explanation:
25 times 20 is 500. 500 times .6 is 300 bucks.
A person places $123 in an investment account earning an annual rate of 2.8%,
compounded continuously. Using the formula V = Pert, where V is the value of the
account in t years, P is the principal initially invested, e is the base of a natural
logarithm, and r is the rate of interest, determine the amount of money, to the
nearest cent, in the account after 2 years.
Answer:
V = 130.08
Step-by-step explanation:
To solve we will use the equation V= [tex]Pe^r^t[/tex]
V= what you are solving for
P= initial number ( 123)
R= rate (2.8%)
-we can convert the rate to a decimal by moving the decimal place 2 spaces to the left.
R= 0.028
T= time (2 years)
The equation should be... [tex]V=123e^(^0^.^0^2^8^*^2^)[/tex]
To solve we can first multiply 0.028 and 2
This is = 0.056
[tex]V=123e^0^.^0^5^6[/tex]
Then using a calculator we get...
V = 130.0845
Enter the coordinates of the point
on the unit circle at the given angle.
270°
Answer: 0,-1
Step-by-step explanation:
a new computer costs 950$ but it depreciates in value by about 14% each year.At this rate,how much will it be worth in 6 years?
Step-by-step explanation:
950x14= 13 300
13300/100
133$ per year
133x6years= 798$
so 950-798= 152
152$ will be the price of the pc at this rate you said
Which of the following describes the graph of
f(x) = x2 – 5x + 6?
A.The graph opens downward and has
x-intercepts at (2,0) and (3,0).
B.The graph opens downward and has
x-intercepts at (-2,0) and (-3,0).
C.The graph opens upward and has
x-intercepts at (2,0) and (3,0).
D.The graph opens upward and has
x-intercepts at (-2,0) and (-3,0).
Answer:
C
Step-by-step explanation:
x=2and3 y is 0
leading coefficient is positive so open upward
firt awnser will get brainleyst
Answer:
1) 95/24
2)23/3
3) 791/72
Step-by-step explanation:
hope this helps
which is not equivalent to 24y-12
Answer:
what are the answer choices
Step-by-step explanation:
The linear expression 24y - 12 is not equivalent to the expression 2(12y - 12) option (A) 2(12y - 12) is correct.
What is an expression?It is defined as the combination of constants and variables with mathematical operators.
The question is incomplete.
The complete question is in the picture, please refer to the attached picture.
We have a linear expression:
= 24y - 12
From the above linear expression take 2 as a common factor:
= 2(12y - 6)
Take 2 as common factor again:
= 2(2)(6y - 3)
= 4(6y - 3)
Now, take 3 as a common factors:
= 12(2y - 1)
The expression 24y - 12 is equivalent to the expressions 2(12y - 6), 4(6y - 3), and 12(2y - 1).
Thus, the linear expression 24y - 12 is not equivalent to the expression 2(12y - 12) option (A) 2(12y - 12) is correct.
Learn more about the expression here:
brainly.com/question/14083225
#SPJ2
The Hiking Club plans to go camping in a State park where the
probability of rain on any given day is 30%. What is the probability
that it will rain on exactly one of the five days they are there? Round
your answer to the nearest thousandth.
Answer:
0.013
Step-by-step explanation:
Use binomial probability:
P = nCr pʳ (1−p)ⁿ⁻ʳ
where n is the number of trials,
r is the number of successes,
and p is the probability of success.
Given n = 6, p = 0.69, and r = 0 or 1:
P = ₆C₀ (0.69)⁰ (1−0.69)⁶⁻⁰ + ₆C₁ (0.69)¹ (1−0.69)⁶⁻¹
P = (1) (1) (0.31)⁶ + (6) (0.69) (0.31)⁵
P = 0.013
What is the next term in the pattern 0.4, 0.8, 1.2, 1.6, ...?
Answer:
2.0, 2.4. 2.8
Step-by-step explanation:
Members of a soccer team raised $1416.50 to go to a tournament. They rented a bus
for $877.50 and budgeted $24.50 per player for meals. Determine the number of
players the team can bring to the tournament.
Answer: The answer is 22 players
Step-by-step explanation:
Please help ASAP
Extra 500 points and brainliest
Answer:
3
Step-by-step explanation:
Only answer that remotely gets close to the chart.
Answer:
Step-by-step explanation:
(3) only answer closest
Taylor bought 48 of marshmallows to the bonfire. Taylor and 10 of her friends made s’mores with them. At the end of the night, there were 9 bags left. How many bags of marshmallows did Taylor and her friends go through? (Write the operation and the answer)
Answer:
The operation used is the Subtraction operation
39 bags of marshmallows
Step-by-step explanation:
The operation we would be using here is the Subtraction operation.
Total number of bags if Marshmallows bought = 48 bags
Number of people present = Taylor + 10 friends = 11 people
Amount of Marshmallows left = 9 bags
Hence, the number of bags of marshmallows that Taylor and her friends went through is calculated as:
48 bags of marshmallows - 9 bags of marshmallows
= 39 bags of marshmallows
Question 3 of 40
Suppose the linear regression line y = 2.125x - 33.121 predicts a lemonade
stand's profits based on the number of cups sold. If x represents the number
of cups sold, and y represents the lemonade stand's profits in dollars, about
how much can the lemonade stand expect in profits if it sells 425 cups?
A. $930
B. $900
C. $870
D. $840
SUBMIT
Answer:
C is the correct answer
Step-by-step explanation:
A P E X
Answer: C. 870 is the correct answer
Step-by-step explanation:
3 – 9 + 4 =
3 – 9 + 4 =
3 – 9 + 4 =
Answer:
[tex]3 - 9 + 4 = 7 - 9 = - 2[/tex]
Hope it helps
Answer:
-2 is the answer
Step-by-step explanation:
3 - 9 + 4 = 7 - 9 = -2