Answer:
2.5 minutes per quesiton
Step-by-step explanation:
75 minutes to take 30 quesitons means you divide the time equally so
75/30
What if the large ferris wheel makes one revolution in 10 seconds and the small wheel makes one revolution in 7 seconds, how many revolutions will each ferris wheel need to complete before you and your sister are at the bottom at the same time?
For you and your sister to reach bottom at the same time, the large Ferris wheel has to take 7 revolutions and the small Ferris wheel has to take 10 revolutions.
Time taken by the large Ferris wheel to complete 1 revolution = 10 seconds.
Time taken by the small Ferris wheel to complete 1 revolution = 7 seconds.
For them to reach bottom at the same time, we need to calculate their least common multiple.
LCM of 10 and 7 will be :
LCM = 10 × 7 = 70 seconds.
Revolutions taken by large Ferris wheel will be = 70 / 10 = 7 revolutions.
Revolutions taken by small Ferris wheel will be 70 / 7 = 10 revolutions.
Therefore, for you and your sister to reach bottom at the same time, the large Ferris wheel has to take 7 revolutions and the small Ferris wheel has to take 10 revolutions.
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Find the volume of the figure
Answer: 192 in
Step-by-step explanation:
volume of the rectangular prism:
2x8x8= 128 in
volume of the rectangular pyramid:
1/3 ( 8 x 8 x (5-2))= 64 in
Total: 128 + 64 = 192 in
Find the midpoint of segment CD if C is (1,7) and D is (9, 13).
in a recently published sociology article about transportation patterns, a sociologist studied whether families rely on their own transportation instead of public transportation. let the mean number of cars owned by a family be μ. if the sociologist wanted to know if families own, on average, more than 3 cars, what are the null and alternative hypotheses?
The null hypothesis is [tex]H_0:\mu=3[/tex] and the alternative hypothesis is [tex]H_1:\mu > 3[/tex]
There are two hypothesis considered in a statistical test. They are:
Null hypothesis ([tex]H_0[/tex])Alternative hypothesis ([tex]H_1[/tex])Formulation of null and alternative hypothesis are considered as the first step of a statistical procedure. The whole procedure, then, continues on testing whether to accept or reject these hypotheses.
Null Hypothesis is the actual hypothesis which is tested. Alternative hypothesis, as its name suggests, is the hypothesis accepted when the null hypothesis is rejected in the test carried out.
Here the sociologist is carrying out the test on the mean number of cars, [tex]\mu[/tex].
So to check whether the families own more than 3 cars in average,
the null hypothesis will be ,[tex]\bold{H_0:\mu=3}[/tex]
and the alternate hypothesis will be, [tex]\bold{H_1:\mu > 3}[/tex]
So if the null hypothesis is rejected, then there is the possibility for only more than 3 cars in average.
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If triangle GHJ is isosceles find the value of x
Answer:
x = 5
Step-by-step explanation:
Because an isosceles triangle's angles will always add up to 180, it's quite simple plugging in angle J into a formula to find our answer.
Before we begin, recall that the bottom two angles of an isosceles triangle are equal to the other. Thus:
Unknown angle (H) = 14x+1
So...
38 + 14x + 1 + 14 x + 1 = 180
40 + 28x = 180
-40 -40
28x = 180
28x/28 = 180/28
We get:
x = 5
Answer:
[tex]x = 5[/tex]
Step-by-step explanation:
Note that:
Base Angles Of An Isosceles Triangle Are Equal.Calculating For the Value Of X
Since Base Angles are Equal(14x + 1)° + (14x +1)° +38° = 180°
Removing Brackets14x + 1 + 14x + 1 + 38 = 180°
28x + 2 + 38 = 180°
28x + 40 = 180°
collecting like term28x = 180 - 40
28x = 140
x =5
Therefore the value of x is 5
300 people were asked the following question: how many times have you accessed the internet this week? - none - once or twice - three or four times - more than four times which method of displaying the data could be used to display the data produced from that question?
(B) Bar graph method of displaying the data could be used to display the data produced from that question.
What is a bar graph?A bar chart, also known as a bar graph, is a type of chart or graph that displays categorical data using rectangular bars with heights or lengths proportional to the values they represent. The bars can be plotted horizontally or vertically. A vertical bar chart is also known as a column chart.A bar graph compares two or more discrete categories. The chart's one axis represents the specific categories being compared, while the other axis represents a measured value.Some bar graphs show bars clustered in groups of more than one, displaying the values of multiple measured variables.Therefore, (B) bar graph method of displaying the data could be used to display the data produced from that question.
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The correct answer is given below:
300 people were asked the following question: How many times have you accessed the internet this week?
- none
- once or twice
- three or four times
- more than four times
Which method of displaying the data could be used to display the data produced from that question?
(a) Time Plot
(b) Bar graph
(c) Stemplot
(d) Histogram
help me please I have a few minutes left
Answer:
.
Step-by-step explanation:
1st option. -27. is the answer
Answer: -22.5
Step-by-step explanation:
-12.5+(-10)=
-12.5-10=
-22.5
Solve the system of equations : 5x - 2y = -1 and -15x + 6y = 3
Answer:
1st Q.
x = -1/5 + 2y/5y = 1/2 + 5x/22nd Q.
x = -1/5 + 2y/5y = 1/2 + 5x/2Simplify.
[tex]\frac{-4+6}{2}[/tex]
Answer:
[tex]\sf\frac{-4+6}{2}[/tex] = 1
Step-by-step explanation:
Let's solve the problem,
→ (-4 + 6)/2
→ 2/2 = 1
Hence, the solution is 1.
which word or phrase describes a word that has been defined
Mina has £2.40. If she gives half to her brother how much money does she have left
Answer:
she has 1.20 left
Step-by-step explanation:
half of 2.40 is 1.0
The scores on a statistics test had a mean of 81 and a standard deviation of 9. One student was absent on the test day, and his score wasn’t included in the calculation. If his score of 84 was added to the distribution of scores, what would happen to the mean and standard deviation?.
Using the definitions of the mean and of the standard deviation of a data-set, we have that:
The mean would increase.The standard deviation would remain constant.What are the mean and the standard deviation of a data-set?The mean of a data-set is given by the sum of all values in the data-set, divided by the number of values.The standard deviation of a data-set is given by the square root of the sum of the differences squared between each observation and the mean, divided by the number of values.When the measure of 84 is added to the data-set, we have that:
A measure greater than the mean is added, hence the mean would increase.The difference squared between 84 and the mean of 81 is of 9, which is the same as the standard deviation, which would remain constant.More can be learned about the mean and the standard deviation of a data-set at brainly.com/question/26941429
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Solve for x
3х+4=12+3x
Answer:
Please mark my answer as the brainliest, it would mean a lot to me
There is no anser, 0 can't equal 8
Step-by-step explanation:
3x + 4 = 12 + 3x
3x = 8 + 3x
0 = 8
NO ANSWER
Evaluate 1.8 raised to the seventh power divided by 1.8 raised to the sixth power, all raised to the second power. 1 1.8 3.24 3.6
The value is 3. 24. Option C
What is index form?Index form is defined as the power or exponent that is raised to a number or a variable.
From the information given, we have the expression to be represented as;
[tex](\frac{(1.8)^7}{1. 8^6} )^2[/tex]
Now, we have to expand the exponential value of the bracket, we have;
[tex]\frac{(1. 8)^7^*^2}{(1. 8)^6^*^2}[/tex]
expand the bracket
[tex]\frac{(1.8)^1^4}{(1.8)^1^2}[/tex]
Using the laws of laws of indices, take the inverse of the denominator
(1. 8)^14-12
(1. 8)²
3. 24
Thus, the value is 3. 24. Option C
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Answer:
3.24
Step-by-step explanation:
one side of an isosceles triangle is three times as long as another side of the triangle. If the perimeterof the triangle is 140, then what is the length of the base of the triangle?
Answer:
20
Step-by-step explanation:
P, perimeter of triangle = a + b + c
We're given P = 140 and it is an isosceles triangle.
We can change P to be 2a + b since 2 sides are equal in an isosceles
So, 140 = 2a + b
One side is 3x longer than the other. The equal sides in the triangle can not be 3x longer than each other since it is equal.
And the isosceles sides are longer than the 1 base side.
So if a = our isosceles sides, and b is our base side, than a is 3x our base side which can be written as a = 3b
Now, 140 = 2(3b) + b, and we can now solve
140 = 6b + b => 140 = 7b
20 = b
Our base length is 20.
Mr. Zuro finds the mean height of all 16 students in his statistics class to be 67.0 inches. Just as Mr. Zuro finishes explaining how to get the mean, Danielle walks in late. Danielle is 63.6 inches tall. What is the mean height of the 17 students in the class?
Answer:
66.8 inches
Step-by-step explanation:
The mean height of 16 students is 67.0"
Total height of 16 students = 67 x 16 = 1,072"
When Danielle walks into the class an additional height of 63.6" is added to the total and the new total becomes 1072 + 63.6 = 1135.6"
Since there are now 17 students, mean = 1135.6/17 = 66.8"
I need help asap!!! (Measurement)
Answer:
the answer is a :)
Step-by-step explanation:
Three fifth of the T-shirts in a T-shirts shop are blue. Five eights of those T-shirts are on sale.One third of the blue T-shirts that are on sale are size medium. What fraction of the shop’s T-shirts are blue T-shirts that are on sale and are size medium?
The fraction of the shop’s T-shirts are blue T-shirts that are on sale and are size medium is 1/ 8
How to determine the fractionFrom the information given, we have the following deductions;
3/5 of the T-shirts are blue5/8 of the T-shirts are on sale1/3 of the blue T-shirts are on sale and medium sizeLet the total number of T-shirts be x
Number of Blue T-shirts that are blue
⇒ x × 3/ 5
⇒ 3x/5
Number of Blue T-shirts on sale
⇒ x × 3/ 5 × 5/ 8
multiply through
⇒ 15x/ 40
⇒ 3x/ 8
Number of Blue T-shirts that are on sale and are of medium size;
⇒ 3x/ 8 × 1/ 3
Multiply through
⇒1/8
Thus, the fraction of the shop’s T-shirts are blue T-shirts that are on sale and are size medium is 1/ 8
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25 points plus brainliest
Answer:
0
Step-by-step explanation:
Or an airplane cruises 1 kilometer in 1 12 of a minute. what is its cruising speed? simplify your answer and write it as a proper fraction, mixed number, or whole number.
The airplane that cruises 1 kilometer in 1/12 of a minute has a speed of 12 km/min
The formula and procedure we will use to solve this problem is:
v = x/t
Where:
x = distancet = timev = velocityInformation about the problem:
x =1 kmt = 1/12 minv =?Applying the velocity formula, we get:
v = 1 km/ (1/12 min)
v = (1 km * 12) / 1 min
v = 12 km/ 1 min
v = 12 km/min
What is velocity?It is a physical quantity that indicates the displacement of a mobile per unit of time, it is expressed in units of distance per time, for example (miles/h, km/h).
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If D= the total price. Write an equation for the total price in dollars for the bike including 7.75% sales tax.
Answer:
Step-by-step explanation:
Total Cost = D
D= Price + Price (0.0775)
D= Price (1 +(0.0775)) Factoring the price
D= Price (1.0775)
D= 1.0775 Price
Two variables are defined, a regression equation is given, and one data point is given.
Hgt
Age
height in inches
age in years of a child
=
Hgt 24 + 2.72(Age)
The data point is a child 12 years old who is 60 inches tall.
Need help on part a
Given the following data:
Age in years of a child = 12 years.Height in inches = 60 inches.What is a residual value?A residual value can be defined as a difference between the measured (given or observed) value from a scatter plot and the predicted value from a scatter plot.
Mathematically, the residual value of a data set can be calculated by using this formula:
Residual value = given value - predicted value
Next, we would determine the predicted value by using the given regression equation as follows:
Hgt = 24 + 2.72(Age)
Hgt = 24 + 2.72(12)
Hgt = 24 + 32.64
Predicted value, Hgt = 56.64 inches.
Now, we can determine the residual value as follows:
Residual value = given value - predicted value
Residual value = 60 - 56.64
Residual value = 3.36 inches.
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Bonjour je galere en maths avec cet exercice de Pythagore qui pour m'aider svp
Answer: utilisez l'équation a^2+b^2=c^2.
Step-by-step explanation: Bonjour, je ne parle pas français donc j'ai utilisé un traducteur pour cela. Pour faire Pythagore, vous utilisez l'équation a^2+b^2=c^2. Donc, d'abord, placez les 2 côtés les plus courts du triangle au carré et additionnez-les. La racine carrée de la réponse pour trouver le côté le plus long. J'espère que cela t'aides.
The wind blew away 28 of your muffins. That was 7/10 of all of them! With how many did you start? As Equation Review
The total number of muffins were 40 and the equation which represnts the given scenarion is (7/10)x = 28.
Let the total number of muffins be x.
According to the given question.
The number of muffins which blew away by wind = 28
And 28 muffins are the 7/10 part of the total muffins.
Therefore, the linear equation in one variable which represents the above scenario is given by
(7/10) × x = 28
⇒ 7x = 280 (multiplying both the sides by 10)
⇒ x = 280/7 (dividing both the sides by 7)
⇒ x = 40
Hence, the total number of muffins were 40 and the equation which represnts the given scenarion is (7/10)x = 28.
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Pls help due today plssss
The equation for the straight line given in standard form and slope intercept form are-
y = -2x +5 ; Slope intercept form2x + 3y = 6: Standard formy = 12x - 5 : Slope intercept form4y = 2x + 3 : Standard formWhat is meant by equation of straight line?Straight lines can appear geometrically in five different cases in two dimensional space and are mathematically expressed in algebraic equation form. It is known as the general or standard form of a straight line.
The general equation of any straight line is y = mx + c, where m is the gradient (how steep the same line is) and c is indeed the y -intercept.This is the slope-intercept form of a straight line equation. A line can be described in a variety of ways. The formula of a line with slope m, for example, (x1,y1) has the point-slope form.The formula 0 = Ax + By + C is known as the 'general form' of a line equation. A, B, and C are real numbers.Comparing the given equations with the general equation-
y = -2x +5 ; Slope intercept form2x + 3y = 6: Standard formy = 12x - 5 : Slope intercept form4y = 2x + 3 : Standard formTo know more about the equation of the straight line, here
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I need help on question 2 pls
Answer:
20 gallons after 50 minutes
Step-by-step explanation:
(2gal/5min) * 10 = 20gal/50 min
50/5 = 10
2*10=20
Find the perimeter of the polygon.
37
54
48
perimeter is just all sides added so the answer would be 37+54+48 = 139
Draw a line representing the "rise" and a line representing the "run" of the line. State the slope of the line in simplest form.
The slope of the line on the diagram given is rise/run = 3/4.
How to Calculate the Slope of a Line?The formula for calculating the value of the slope of a line on a coordinate plane is expressed as: change in y / change in x = rise of the line / run of the line.
Slope = rise/run.
Given the line shown in the graph above, we have the following:
The blue line represents the rise of the line = 3 units
The red line represents the run of the line = 4 units
Slope (m) of the line = rise/run = change in y / change in x = 3 units/4 units
Slope (m) = 3/4
Therefore, the slope of the line on the diagram given is rise/run = 3/4.
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A kilogram of dalandan in pure gold costs p55.00. if jessica brought k kilograms, represent the amount paid a as a function
The function of amount paid in terms of kilograms of dalandan is A= 55k.
According to the statement
We have to find that the amount paid in terms of kilograms of dalandan.
So, For this purpose, we know that the
The Amount generally refers to a quantity, sum of two or more quantities.
From the given information:
The Php. 55 cost of dalandan
And then
Let A stands for paid amount
k stands for number of kg of dalandan
Amount = Cost × No. of items
Amount = 55 × k
A = 55 × k
A = 55k
So, The function of amount paid in terms of kilograms of dalandan is A is 55k.
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i need help with this
Answer: send a pic
Step-by-step explanation: