Solve the quadratic equation by using either a numeric or a graphic approach.
Answer:
C
Step-by-step explanation:
x²-14x-49=0
x²-14x+49=49+49
(x-7)²=98
(x-7)²=49×2
x-7=±7√2
x=7+7√2=7(1+√2)≈7(1+1.414)≈7(2.414)≈16.898≈16.9
or
x=7-7√2=7(1-√2)≈7(1-1.414)≈-7×0.414≈-2.898≈2.9
if f(x) and g(x) are inverse function, find f(g(x)).
Answer:
The answer is x.
Step-by-step explanation:
Inverse functions undo each other, so if f(x) spits out a number, g(x) reverses that and gives you x again.
Find the absolute minimum and absolute maximum values of f on the given interval. f(t) = 3 (*sqaure root sign*) t (20 − t), [0, 20]
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Answer:
maximum: 15∛5 ≈ 25.6496392002minimum: 0Step-by-step explanation:
The minimum will be found at the ends of the interval, where f(t) = 0.
The maximum is found in the middle of the interval, where f'(t) = 0.
[tex]f(t)=\sqrt[3]{t}(20-t)\\\\f'(t)=\dfrac{20-t}{3\sqrt[3]{t^2}}-\sqrt[3]{t}=\sqrt[3]{t}\left(\dfrac{4(5-t)}{3t}\right)[/tex]
This derivative is zero when the numerator is zero, at t=5. The function is a maximum at that point. The value there is ...
f(5) = (∛5)(20-5) = 15∛5
The absolute maximum on the interval is 15∛5 at t=5.
Need help question #4. Show steps please
Answer:
C.
Step-by-step explanation:
We are given the integral:
[tex]\displaystyle \int_1^2\frac{x^7-4x^3+6}{x^2}\, dx[/tex]
And we want to select its equivalent form.
We can simply divide the fraction. Therefore:
[tex]=\displaystyle \int_{1}^2\frac{x^7}{x^2}-\frac{4x^3}{x^2}+\frac{6}{x^2}\, dx[/tex]
Simplify:
[tex]\displaystyle =\int_1^2 x^5-4x+6x^{-2}\, dx[/tex]
Our answer is C.
A rental car company charges a fixed fee of $30 plus $0.05 per mile. The Boggs family paid $49.75 for their car rental. How many miles did they drive? Write an equation and solve.
Answer: 395
Step-by-step explanation:
Which expression is equivalent to (4 1/3)
Answer:
B
Step-by-step explanation:
Combine the like terms to create an equivalent expression,
Зу +6 – у
HELPPPPPP NOWWWW
100 points
Answer: 2y+6
Step-by-step explanation:
Answer:
x and y
Step-by-step explanation:
The stem-and-leaf plot shows the distances, in miles, that a group of owners of new cars drove one weekend.
How many of the owners drove between 50 and 65 miles?
PLEASE ANSWER ASAP! Triangle ABC has side lengths 8 cm, 17 cm, and x cm. The side length of x is shorter than the longest side. What does the value of x need to be in order for the triangle to be considered a right triangle?
A. 4 cm
B. 9 cm
C. 15 cm
D. 12 cm
1. x²+2xy+y²
2. x²-8x+16
3. 16a⁴_24a²b²+9b
Answer:
1.(x+y)²
2. (x-4)²
3. (4a²-3b²)²
In a popular online role playing game, players can create detailed designs for their character's "costumes," or appearance. Jonathan sets up a website where players can buy and sell these costumes online. Information about the number of people who visited the website and the number of costumes purchased in a single day is listed below.
140 visitors purchased no costume.
166 visitors purchased exactly one costume.
32 visitors purchased more than one costume.
Based on these results, express the probability that the next person will purchase one or more costumes as a percent to the nearest whole number.
Answer: it should be A/1
if i have 71% of something done but i need 100% done in 25 days how many percent should i complete everyday
Answer:
.75% a day
Step-by-step explanation:
3+4-8+9-8+78+99-7999+8799+0×6997+90÷797883+677_5=
Simplify: 14y+13x+12y÷19x+4
Answer:
13x+14y+12y/19x+4
Step-by-step explanation:
e)
2 Before you calculate these answers, first estimate the
a) 30 870 ÷49
b) 221 340 ÷17
c) 100 719÷ 279
d) 75 640 ÷310
Step-by-step explanation:
1.) 630
2.) 13020
3.) 361
4.) 244
Consider the expression
10x2 + 5x – 25.
What is the GCF (greatest common factor)?
Answer:
5
Step-by-step explanation:
Answer:
Its def 5, My calculations are never wrong
I’ll give points and brainalist for correct answer / explanation
Answer:
i think you forgot to attach the image lol
Step-by-step explanation:
Out of all of the topics covered so far in the course (whole numbers, fraction notation: multiplication, division, and mixed numerals), which did you enjoy the most? Which do you enjoy the least? Why?
Answer: I would say I've liked multiplication the most and division the least! I have always gotten multiplication because.. I don't really know. It's just easy for me. I can't really explain. For multiplication though.. I have never gotten it. It is the exact opposite. I've never understand how you have to skip a digit because you can't divide it to the other number.
Step-by-step explanation:
Hope this helps! This is my opinion.
I made this don't copy my answer
If you don’t know I don’t answer (NO LINKS )
Uhh I might just answer this so the guy who did so much can get brainliest
i have been struggling with this question for 30mins. if you answer it can you please show work? thank you
Answer:
a)22
Step-by-step explanation:
An international organization is investigating the relationship between the life expectancies of men and women in nonindustrialized countries. A random sample of such countries was selected, and life expectancies, in years, were determined for both men and women. A check of the conditions necessary for inference on the slope of a regression line shows that they are met. A 98 percent confidence interval for the slope of the regression line relating life expectancy for men, x, and women, y, is given by (1.01, 1.34). Based on the interval, which of the following claims is supported?
A Since the interval does not contain 0, it can be concluded that there is no linear relationship between the life expectancies of men and women in nonindustrialized countries.
B Since the interval does not contain 1, it can be concluded that there is no linear relationship between the life expectancies of men and women in nonindustrialized countries.
Ğ¡ Since the values in the interval are greater than 0, it can be concluded that the life expectancies of women are greater than the life expectancies of men in nonindustrialized countries.
D Since the values in the interval are positive, it can be concluded that there is an increase, on average, in the life expectancies of women for each 1-year increase in the life expectancy of men in nonindustrialized countries.
E Since the values in the interval are positive, it can be concluded that there is a decrease, on average, in the life expectancies of women for each 1-year increase in the life expectancy of men in nonindustrialized countries.
Answer:
D
Step-by-step explanation:
From the given information:
At the confidence interval of 0.98 for the slope of the regression; the expectancy of life for men and women appears to be positive. This clearly implies that there are sufficient evidence and information that the two variables is positively correlated. As a result, if the expectancy of life for men increases, the same will also increase for women.
The values of interval are positive thus it can be said that there is an increase on average life expectancy. Thus the option D is correct.
What is life expectancy ?The life expectancy is the statically measure of the average organism expected to live. The life expectancy is based on the birth rate.
As the C.I is of 0.98 the slope of the regression that is expectancy of the life for the men and the women appears positive.
Thus its clearly that the two variables is positively correlated. Hence, the expectancy for for men increases the same will be for women.
Find out more information about the life expectancy.
brainly.com/question/15815888
Which statement best describes the values of x and y in the table?
I need help on how to do this
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Answer:
see attached
Step-by-step explanation:
a) A system of equations has no solutions when the graphs of those equations do not intersect. If the equations are equations of a line, then the lines must be parallel in order for them not to intersect.
Any parallel line will do.
__
b) There is one solution when the graphs intersect in exactly one point.
Any line that crosses the one shown will do.
__
c) There are infinite solutions when the graphs describe the same curve.
A line overlapping the one shown is the one you want.
Define the following terms.
Mode:
Median
Mean:
Range:
M.A.D:
1.Q.R:
Answer:
The mean (average) of a data set is found by adding all numbers in the data set and then dividing by the number of values in the set. The median is the middle value when a data set is ordered from least to greatest. The mode is the number that occurs most often in a data set.
Mean absolute deviation (MAD) of a data set is the average distance between each data value and the mean. Mean absolute deviation is a way to describe variation in a data set. Mean absolute deviation helps us get a sense of how "spread out" the values in a data set are.
1Q: 1st Quarter
R: Range
Step-by-step explanation:
Can someone help me with this please ?
Answer:
The corner is 90 degrees so I believe you add them so 60+90+30 is 180!!!
Please somebody help me and solve this problem
Answer:
this is the equation for the graph y=(x+3)(x-2)
PLEASE HELP ME!!! PLEASE
Answer:
it should be (8,-7)
Step-by-step explanation:
The following data will be used to construct a box plot. What will be the value of the median? 2, 5, 10, 11, 12, 15, 21, 32, 32, 46
What is the lateral surface area of this net
Help!!!
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Answer:
720 square feet
Step-by-step explanation:
The lateral area is the area of the central rectangle of the net. It is 12+12+12 = 36 feet long and 20 ft wide.
The lateral area is (36 ft)(20 ft) = 720 ft².
The table shows the width and length of different pictures that Nethan has enlarged for the school yearbook:
WILL GIVE BRAINLIEST
Enlarged Pictures
Width (inch) Length (inch)
4 5
8 10
12 15
Based on the table, what is the length of a picture that has a width of 20 inches?
Answer:
from 2nd and 3rd figures
width of 2nd figure + width of 3rd figure
8 + 12 = 20inch
so, length of a picture that has a width of 20 inches will be , length of 2nd figure + length of 3rd figure
=10 + 15
=25 inch
Step-by-step explanation: