Evaluate the expression 90 = [(82 - 77).91
Answers
Answer:
See below.
Step-by-step explanation:
Since there is an equal sign, this is not an expression. It is an equation. If you evaluate the right side, you'll see that it is a false equation since both sides are not equal to each other. Also, there is a bracket missing.
90 is not equal to 4.55.
Maybe it is meant to be the following expression:
90 + [(82 - 77).91] = 90 + 5(0.91) = 90 + 4.55 = 4.55
Or maybe this one:
90 - [(82 - 77).91] = 90 - 5(0.91) = 90 - 4.55 = 85.45
Related Questions
2. Four brothers each bought two hot dogs and a bag of chips at the football concession stand. If the bag of chips was $ 1.25, and the total was $ 18.20, what was the price of one hot dog?
Answers
Answer:
1.65$
Step-by-step explanation:
18.20$ (total price) - 4×1.25$ ( chips price) = 13.2$
13.2$ ( price of 8 hot dog)
price of one hot dog= 13.2$ ÷8= 1.65$
Before sending track and field athletes to the Olympics, the U.S. holds a qualifying meet.
The upper box plot shows the top
12
1212 men's long jumpers at the U.S. qualifying meet. The lower box plot shows the distances (in meters) achieved in the men's long jump at the
2012
20122012 Olympic games.
2 horizontal boxplots titled U.S. Qualifier and Olympics are graphed on the same horizontal axis, labeled Distance, in meters. The boxplot titled U.S. Qualifier has a left whisker which extends from 7.68 to 7.7. The box extends from 7.7 to 7.89 and is divided into 2 parts by a vertical line segment at 7.74. The right whisker extends from 7.9 to 7.99. The boxplot titled Olympics has a left whisker which extends from 7.7 to 7.83. The box extends from 7.83 to 8.12 and is divided into 2 parts by a vertical line segment at 8.04. The right whisker extends from 8.12 to 8.31. All values estimated.
Which pieces of information can be gathered from these box plots?
Choose all answers that apply:
Choose all answers that apply:
(Choice A) The Olympic jumps were farther on average than the U.S. qualifier jumps.
A
The Olympic jumps were farther on average than the U.S. qualifier jumps.
(Choice B) All of the Olympic jumps were farther than all of the U.S. qualifier jumps.
B
All of the Olympic jumps were farther than all of the U.S. qualifier jumps.
(Choice C) The Olympic jumps vary noticeably more than the U.S. qualifier jumps.
C
The Olympic jumps vary noticeably more than the U.S. qualifier jumps.
(Choice D) None of the above
D
None of the above
Answers
The pieces of information that the box plots on the distances show include:
A. The Olympic jumps were farther on average than the U.S. qualifier jumps.C. The Olympic jumps vary noticeably more than the U.S. qualifier jumps.What does the box plot show ?The box plot on the the distances (in meters) achieved in the men's long jump first shows that due to the fact that the length of the box for the Olympics was longer, the Olympic jumpers were farther on average than the U.S. qualifier jumps.
The box plot also shows that due to the whisker and the box for the Olympics being longer than the U.S. qualifier, there was more variance with the Olympic jumps.
Find out more on box plots at https://brainly.com/question/30652189
#SPJ1
How can i see if variables are highly correlated?
Correlation Analysis 3. Results will appear in next Sheet. 4. Discuss which variables are highly correlated. Why? 5. Copy Result to Word doc. unique sende RT weet Coun Pre Release Celebrity USA Index
Answers
To determine if variables are highly correlated, you can conduct a correlation analysis. By examining the correlation coefficients, you can identify variables that are highly correlated.
Correlation analysis helps to assess the relationship between variables. The correlation coefficient ranges from -1 to +1, where -1 represents a perfect negative correlation, +1 represents a perfect positive correlation, and 0 represents no correlation. Variables that are highly correlated will have correlation coefficients closer to -1 or +1, indicating a strong linear relationship.
To conduct a correlation analysis, you can calculate the correlation coefficient between each pair of variables. If the correlation coefficient is close to +1, it suggests a strong positive correlation, meaning that as one variable increases, the other tends to increase as well. Conversely, if the correlation coefficient is close to -1, it indicates a strong negative correlation, implying that as one variable increases, the other tends to decrease.
In the context of your analysis, you can examine the correlation coefficients between the unique sender, retweet count, favorite count, pre-release, celebrity, and USA index variables. By identifying variables with high correlation coefficients, you can determine which variables are highly correlated and explore the reasons behind their relationship.
Once you have obtained the correlation analysis results, you can copy them to a Word document for further discussion and analysis. This will allow you to document and present the findings of the correlation analysis.
Learn more about variables here:
https://brainly.com/question/29583350
#SPJ11
HELP ME PLEASE!!!
Solve the system of equations by using substitution. Show all work for full credit. List your answer as an ordered pair. (4 points)
5x + 10y = 20
= 3y - 1
Answers
Answer:
\(x=2 , y=1\)
Step-by-step explanation:
Since the second equation is fully simplified and we know what x equals, we plug the entire equation of x in for x in the top equation:
\(5(3y-1)+10y=20\)
Now solve for y.
\(y=1\)
Now plug y back into the bottom equation and solve for x.
\(x=3(1)-1\)
\(x=2\)
What's the number between 1.35 and 1.351
Answers
Answer: + 1000
Step-by-step explanation:
- 4 ( x - 5 ) = 92
What is x?
Answers
Answer:
Let's solve your equation step-by-step.
−4(x−5)=92
Answer:
x=−18
Step-by-step explanation:
Answer:
x = 28
Step-by-step explanation:
4 ( − 5 ) = 9 2
4 − 2 0 + 2 0 = 9 2 + 2 0
4x =112
4x/4 = 112/4
x = 28
Two times the smaller of two consecutive even integers is 18 more than the larger.
Answers
Answer:
2x = x+1 + 18
---
x = 19
-----------
x+1 = 20
Step-by-step explanation:
The smaller of the two consecutive even integers is 20, and the larger is 22.
What is a number system?A numeral system is a way of writing numbers; it's a way of mathematically notating a collection of numbers by utilizing a consistent set of digits or other symbols.
Let's call the smaller of the two consecutive even integers "x".
Since the integers are consecutive and even, we know that the larger integer must be 2 more than the smaller integer. Therefore, we can represent the larger integer as "x + 2".
According to the problem statement, two times the smaller integer (2x) is 18 more than the larger integer (x + 2). We can express this algebraically as:
2x = x + 2 + 18
Simplifying this equation, we can combine like terms on the right-hand side:
2x = x + 20
Subtracting x from both sides, we get:
x = 20
Therefore, the smaller of the two consecutive even integers is 20, and the larger is 22 (since 20 + 2 = 22).
To know more about the number system follow
https://brainly.com/question/17637345
#SPJ2
Once we have categorized an object, our memory of the object increasingly resembles thecategoryA) algorithm.B) prototype.C) heuristic.D) mental set
Answers
Once we have categorized an object, our memory of the object increasingly resembles the category is B) prototype. This means that when we categorize an object, our memory of it begins to resemble the prototype or typical example of that category. For example, if we categorize a bird as a robin, our memory of the bird will increasingly resemble the characteristics of a typical robin.
This happens because our brain uses prototypes as a shortcut to process information and make sense of the world around us. We use prototypes to quickly identify objects and make assumptions about their characteristics based on their category.
our memory of an object after categorization is influenced by the prototype of the category. This helps us to quickly process and make sense of information, but it can also lead to errors and biases in our thinking.
A prototype is a mental image or best example of a category. When we categorize an object, our memory of the object increasingly resembles the prototype because we tend to recall the most representative or typical example of the category.
Once we categorize an object, our memory of the object becomes more like the prototype, which is the best example of the category. This is because we tend to remember the most representative or typical examples of a category.
To know more about prototype, visit:
https://brainly.com/question/28187820
#SPJ11
21. Determine the measures of angles x, y, and z.
55⁰
80
100°
60°
Answers
Y=3
Is the wright answer I did the test and got it write
ASAP!! Please look at image for picture. Question due soon!!
Answers
Step-by-step explanation:
a 68% mixture means it has a 68/100 fraction of alcohol :
68 ml of alcohol as part of a 100 ml mixture.
I am not sure how to understand the problem description, so I solve for 2 different problems.
1. create a new 600 ml mixture with 68% alcohol.
since we want to have a 600 ml mixture, we need to multiply the denominator of the fraction by 6.
to keep the value of the fraction unchanged, we need then also to multiply the numerator by 6 :
68/100 × 6/6 = 408/600
that means they need to include 408 ml of 100% alcohol with 192 ml of the rest of the ingredients to create 600 ml of a 68% mixture.
2. we have 600 ml of 50% mixture and are adding 100% alcohol to get a 68% mixture.
the current mixture has a 50/100 fraction of alcohol.
so, 300 ml of the 600 ml mixture are 100% alcohol.
we need to add x ml of 100% alcohol to make it a 68% mixture of 600 + x ml.
that means the sum of the existing 600 ml plus the added 100% alcohol must reach the same (68/100) fraction of alcohol.
(300 + x) / (600 + x) = 68/100
100(300 + x) = 68(600 + x)
30000 + 100x = 40800 + 68x
30000 + 32x = 40800
32x = 10800
2x = 675
x = 337.5 ml
we need to add 337.5 ml of 100% alcohol to the existing 600 ml mixture to get a a mixture of 68% alcohol in the in total 937.5 ml.
united airlines flight 179 is a nonstop flight from boston to san francisco. during 2016 the mean length of time for all flights was 357.9 minutes and population standard deviation was 20.18 minutes. you want to construct a 95% confidence interval for the mean length of time of the flight in 2018 based on a sample of flights in 2018. what is the minimum size of the sample needed in order to have a margin of error of two minutes or less?
Answers
Using the concepts of statistics, we got that at least 79 is the minimum size of the sample needed in order to have a margin of error of two minutes or less, when we need to construct a 95% confidence interval for the mean length of time.
We have mean as 357.9minutes and standard deviation as 20.18 minutes.
To have the margin error 2 minutes or less than it we need to take
Z-score of the given sample distribution which is given by:
Z=(X-μ)/σ
The z-score measures how many standard deviations the measure is above or below the mean.Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.By the Central Limit Theorem, the sampling distribution of sample means of size n has standard deviation .Here ,μ=357.9,σ=20.18,X=?,Z=95/100
=>95/100=(X-357.9)/20.18
=> -0.95×20.18=X-357.9
=>X=-357.9+0.95×20.18
=>X=-357.9+19.171
>X=-338.729
When X=-338.729,the p score is around 79.
Hence, when I want to construct a 95% confidence interval for the mean length of time of the flight in 2018 based on a sample of flights in 2018., the minimum size of the sample needed in order to have a margin of error of two minutes or less is 79.
To know more about statistics, visit here:
https://brainly.com/question/23091366
#SPJ4
Kiemanh is solving the equation 15 r minus 6 r = 36. What is the value of r? 2 4 15 27
Answers
Answer:
the actual answer is B.) 4
Step-by-step explanation:
just took the topic test
Answer:
B
Step-by-step explanation:
Which equation describes a parabola that opens left or right and whose
vertex is at the point (h, v)?
A. y = a(x - 1)2 + 1
B. x = aly - y)2 + h
C. x = aly - h)2 + V
O D. y = a(x - h)2 + V
Answers
Answer:
B. x = a(y - v)^2 + h
Step-by-step explanation:
The basic equation is ...
x = f(y)
x = y^2
To translate the vertex from (0, 0) to (h, v), we replace x with (x-h) and y with (y-v). Now, we have ...
x -h = (y -v)^2
To scale the graph horizontally by a factor of "a", we multiply the right side by "a":
x -h = a(y -v)^2
Adding h gives the form you want to compare to the answer list:
x = a(y -v)^2 +h
_____
The attachment shows an example for (h, v) = (4, 3).
Answer:
B
Step-by-step explanation:
Hopefully this helps :)
3. Which model shows the fraction
A.
B.
C.
D.
as a multiple of a unit fraction?
Answers
Answer:
A is the answer
Step-by-step explanation:
because 3 is shaded
and there is 5 rows with three shaded
use green's theorem to find the counterclockwise circulation and outward flux for the field f=(7x−4y)i (9y−4x)j and curve c: the square bounded by x=0, x=4, y=0, y=4.
Answers
The counterclockwise circulation around c is 12 and the outward flux through c is zero.
Green's theorem is a useful tool for calculating the circulation and flux of a vector field around a closed curve in two-dimensional space.
In this case,
we have a field f=(7x−4y)i+(9y−4x)j and
a square curve c bounded by x=0, x=4, y=0, y=4.
To find the counterclockwise circulation, we can use the line integral of f along c, which is equal to the double integral of the curl of f over the region enclosed by c.
The curl of f is given by (0,0,3), so the line integral evaluates to 12.
To find the outward flux, we can use the double integral of the divergence of f over the same region, which is equal to zero since the divergence of f is also zero.
To learn more about : circulation
https://brainly.com/question/30619471
#SPJ11
Aaron has a collection of American coins. He has 3 times as many 10 cent coins as 25 cent coins, and he has some 5 cent coins as well. If he has 8 coins with total value $11.40. how many of each type does he have?
Answers
Step-by-step explanation:
SEE THE IMAGE FOR SOLUTION
HOPE IT HELPS
HAVE A GREAT DAY
There were 600 pieces of fruit in the fruit salad. Thirty-two percent were watermelon and were grapes. Is it reasonable to estimate that about 200 pieces
of the fruit were neither watermelon nor grapes?
Answers
Answer:
yes it is
Step-by-step explanation:
Answer:
32% of 600 is 192.
600-192=408
So I think that it isn't reasonable for only 200 pieces to not be watermellon or grapes.
Find the rate of change of y with respect to x if dy dx x²y-5+2 ln y = x³
Answers
The rate of change of y with respect to x is given by dy/dx = xy - (3/2)x²y.
To find the rate of change of y with respect to x, we need to differentiate the given equation. The rate of change can be determined by taking the derivative of both sides of the equation with respect to x.
First, let's differentiate each term separately using the rules of differentiation.
Differentiating x²y with respect to x gives us 2xy using the product rule.
To differentiate 5, we know that a constant has a derivative of 0.
Differentiating 2ln(y) with respect to x requires the chain rule. The derivative of ln(y) with respect to y is 1/y, and then we multiply by dy/dx. So, the derivative of 2ln(y) is 2/y * dy/dx.
Differentiating x³ gives us 3x² using the power rule.
Now, we can rewrite the equation with its derivatives:
2xy - 2/y * dy/dx = 3x²
To solve for dy/dx, we can isolate it on one side of the equation. Rearranging the equation, we get:
2xy = 2/y * dy/dx + 3x²
To isolate dy/dx, we move the term 2/y * dy/dx to the other side:
2xy - 2/y * dy/dx = 3x²
2xy = 2/y * dy/dx + 3x²
2/y * dy/dx = 2xy - 3x²
Now, we can solve for dy/dx by multiplying both sides by y/2:
dy/dx = (2xy - 3x²) * (y/2)
Simplifying further, we have:
dy/dx = xy - (3/2)x²y
To know more about rate of change, refer here:
https://brainly.com/question/29181688#
#SPJ11
Simplify \(\frac{sec(a)-csc(a)}{sec(a)+csc(a)}\)
Answers
The simplified version of (sec a - cosec a) / (sec a + cosec a) is cosec 2a(cosec 2a - 2) / (sec²a - cosec²a).
What is trigonometry?The study of correlations between triangles' side lengths and angles is known as trigonometry. The field was created in the Hellenistic era in the third century BC as a result of the use of geometry in astronomical research.
Given:
(sec a - cosec a) / (sec a + cosec a)
Multiply the numerator and denominator by (sec a - cosec a)
(sec a - cosec a) / (sec a + cosec a) × (sec a - cosec a)
(sec²a + cosec²a -2sec a cosec a) / (sec²a - cosec²a)
As we know,
\(sec^2a + cosec^2a = sec^2a \ cosec^2a\)
sec² a cosec² a - 2sec a cosec a / (sec²a - cosec²a)
sec a cosec a (sec a cosec a - 2) / (sec²a - cosec²a)
cosec 2a(cosec 2a - 2) / (sec²a - cosec²a)
To know more about trigonometry:
https://brainly.com/question/14272510
#SPJ1
Pls solve with step by step solution, thx .
Answers
Answer:
Step-by-step explanation:
(-4,0) (0,3)
(3-0)/(0+4)= 3/4
y - 0 = 3/4(x + 4)
y = 3/4x + 3
Find f[g(x)] and g[f(x)] for the given functions. 3 f(x) = -x³ +3, g(x) = 4x+7 (Simplify your answer. Do not factor.) (Simplify your answer. Do not factor.) f[g(x)] = g[f(x)] =
Answers
The value of f[g(x)] is - 64x³ - 336x² - 588x - 340 and the value of g[f(x)] is -4x³ + 19
The functions are as follows; f(x) = -x³ +3 and g(x) = 4x+7
The value of f[g(x)] is obtained by replacing every x in f(x) with the value of g(x) as given below
f[g(x)] = f(4x + 7) = - (4x + 7)³ + 3
When we expand (4x + 7)³, it gives us 64x³ + 336x² + 588x + 343
Then
f[g(x)] = - 64x³ - 336x² - 588x - 340
Similarly, g[f(x)] is obtained by replacing every x in g(x) with the value of f(x) as shown below;
g[f(x)] = g(-x³ + 3) = 4(-x³ + 3) + 7g
[f(x)] = -4x³ + 19
Therefore,
f[g(x)] = - 64x³ - 336x² - 588x - 340
g[f(x)] = -4x³ + 19
Learn more about the function at
https://brainly.com/question/32520165
#SPJ11
2 + 6x > 38 How can I solved this?
Answers
Answer:
Below
Step-by-step explanation:
Move all terms not containing x to the right side of the inequality.
6 x > 36
Divide each term by 6 and simplify.
x > 6
Inequality Form: x > 6
Interval Notation: ( 6 , ∞ )
Hope this helps:)
Perimeter is 25 cm, find x 10 8.2 cm
Answers
If you have access to a graphing calculator or free graphing web
resource, utilize it for this problem. If not, graph it by hand on a coordinate
plane. Start by graphing the function f(x) = x-4. Now graph a new
function, g(x) = 3x - 12. If f(x) was transformed into g(x) in a single step,
what type of transformation was it? What was the "k" value? What happened
to the slope and y-intercept you see in your graphs? Use 2 complete
sentences.
Answers
Answer: By plotting the functions f(x) = x-4 and g(x) = 3x - 12 on a coordinate plane, we can see that the transformation from f(x) to g(x) was a vertical stretch by a factor of three with no translation. This transformation has a "k" value of 3. We can see that the slope of g(x) is three times steeper than that of f(x), and that the y-intercept of g(x) is similarly three times lower than that of f(x), representing the vertical stretch by a factor of three.
Step-by-step explanation:
an airplane descends 2.2 miles to an elevation of 6.75 miles find the elevation of the plane before its descent
the initial elevation of the plane was ........ miles
and no links plz
Answers
Answer: 8.75 miles
Explanation: this is simple, just add the descending variable to the current elevation to get the previous elevation.
Answer:
8.95 milesStep-by-step explanation:
Let the initial elevation is x.
An airplane descends 2.2 miles to an elevation of 6.75:
x - 2.2 = 6.75x = 6.75 + 2.2x = 8.95End of Week Number 1 2 3 4 5 6 7 PV $ 60,000 $ 25,000 $ 15,000 $ - $ 30,000 $ 30,000 $ 30,000 EV $ 60,000 $ - $ 25,000 $ 15,000 $ 30,000 $ 30,000 $ 30,000 AC $ 62,000 $ - $ 26,000 $ 15,000 $ 32,000 $ 33,000 $ 30,000 1. What is the planned value (PV) at the END OF WEEK 7? 2. What is the earned value (EV) at the END OF WEEK 7? 3. What is the actual cost (AC) at the end of WEEK 7? 4. What is the cost variance (CV) at the end of WEEK 7? 5. What is the schedule variance (SV) at the end of WEEK 7? 6. What is the cost performance index (CPI) at the end of WEEK 7? 7. What is the schedule performance index (SPI) at the end of WEEK 7? 8. At the end of WEEK 7, how is this project performing? Use CPI nd SPI to justify your conclusion.
Answers
The project is performing well at the end of WEEK 7.
1. The planned value (PV) at the end of WEEK 7 is $30,000.
2. The earned value (EV) at the end of WEEK 7 is $30,000.
3. The actual cost (AC) at the end of WEEK 7 is $30,000.
4. The cost variance (CV) at the end of WEEK 7 is $0.
5. The schedule variance (SV) at the end of WEEK 7 is $0.
6. The cost performance index (CPI) at the end of WEEK 7 is 1.0 (CV/AC).
7. The schedule performance index (SPI) at the end of WEEK 7 is 1.0 (EV/PV).
8. At the end of WEEK 7, this project is performing according to the plan. The CPI and SPI are both equal to 1.0, indicating that the project is on track in terms of cost and schedule. The cost variance (CV) and schedule variance (SV) being zero further support this conclusion, as it means that the project is meeting its planned budget and schedule.
To know more about project, visit:
https://brainly.com/question/28476409
#SPJ11
20. Higher Order Thinking Marcus spent
20% of y dollars to pay for his car to be
repaired. What is y if 20% of y is about
$40? Explain how you estimated and which
property of equality you used to find y.
Answers
Answer:
Step-by-step explanation:
Use the words in the problem to write the equation you need to solve it. The word "of" means to multiply, the word "is" means "equals", and we always put a percentage in the form of a decimal when we use it in an equation.
Our equation would look like
.20y = 40 so
y = 200
A seed company planted a floral mosaic of a national flag. The perimeter of the flag is 2,260 ft Determine the flag's width and length if the length is 290 ft greater than the width.
Answers
Answer:
length= 710 width= 420
Step-by-step explanation:
As we consider a rectangle we can replace "length" with l and "width" with w so that the perimeter will be:
2l+2w= 2260
With the length as:
l= w+290
The length, substituted into the perimeter is:
2(w+290)+2w=2260
Distribute:
4w+580=2260
Subtract:
4w=1680
Divide:
w=420
To find the length, take the width and add 290:
420+290=710
l=710
when there is more than two population means, which statistical analysis should be used to see the simple significant mean difference? a) paired t test b) dependent t test c) independent t test d) f test
Answers
When there is more than two population means, which statistical analysis should be used to see the simple significant mean difference:
(b) Dependent t test
Correlated T-Test:
The correlated t-test is also known as the dependent t-test or paired t-test. It is conducted when two sets of data are related or dependent on each other, such as observation made before the treatment and observation made after the treatment.
To test if the means are equal for more than two groups we perform an analysis of variance test. An ANOVA test will determine if the grouping variable explains a significant portion of the variability in the dependent variable.
Learn more about T test at:
https://brainly.com/question/1189751
#SPJ4
What is the value of x, in the question -8 = 14
Answers
Answer:
there is no X to have a value...