Answers
7). 1/(√7-√11)
= 1×(√7+√11)/(√7-√11)(√7+√11)
= √7+√11 / (√7)² - (√11)²
= √7 + √11 / 7 - 11
= √7 + √11 / (-4)
EXPLAINATION:
to rationalize the denominator we multiply the numerator and the denominator by the denominator, but with the opposite sign.
For example - in the first question we multiplied 1 and √7 - √11 by √7 + √11 .
Related Questions
Trig homework. Find the two missing sides and write your answer as in simplified radical form.
Answers
Answer:
u = 8, v = 4[tex]\sqrt{2}[/tex]
Step-by-step explanation:
Using the sine ratio in the right triangle and the exact value
sin45° = [tex]\frac{1}{\sqrt{2} }[/tex] , then
sin45° = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{4\sqrt{2} }{u}[/tex] = [tex]\frac{1}{\sqrt{2} }[/tex] ( cross- multiply )
u = 8
The triangle is right isosceles with legs congruent, so
v = 4[tex]\sqrt{2}[/tex]
My little brother spent $5 on comic books and magazines. He bought 4 items. If comic books
cost $1 and magazines cost $2, how many of each item did my brother buy?
comic books
magazines
No links please!
Thank you
Answers
Answer: He bought 1 magazine and 3 comic books.
Step-by-step explanation: If comic books cost $1 and magazines cost $3, the equation for the problem should look like this: 2(m) + 1(c) = 5, since you know that the brother spent $5 in total. "m" represents the number of magazines purchased while "c" represents the number of comic books purchased. If you plug in 1 for "m" and 3 for "c", the equation would be true and would equal a total of $5. Also, 1 magazine and 3 comic books would mean that the little brother did, in fact, purchase 4 items.
Light travels at approximately 2.998 x 10^5 kilometers per second. There are 6.048 x 10^5 seconds in one week. About how many kilometers does light travel in one week?
A 1.813 x 10^5
B 1.813 x 10^10
C 1.813 x 10^11
d 1.813 x 10^25
Answers
Which is an example of a statistical question?
Questions
Question 1 How many pets does Alisha have at home?
Question 2 How old were you when you got your first pet?
Question 3 Do you like having a pet?
Question 4 What is Alisha’s pet’s name?
A question 1
B question 2
C question 3
D question 4
Answers
Answer:
Question 2
Step-by-step explanation:
divdtihcdyuvftujvfujvfubf
Answer:
2
Step-by-step explanation:
Julie can pack 18 hampers in 5 hours, Kyle can pack 14 hampers in 4 hours. Julie and Kyle work together to pack a total of 40 hampers. If they continue to work at the same rate, how long will it take them to pack the 40 hampers? Give your answer in hours and minutes, to the nearest minute.
Answers
Answer:
It will take 1 hour and 25 minutes to pack the 40 hampers
Step-by-step explanation:
Julie can pack 18 hampers in 5 hours
Kyle can pack 14 hampers in 4 hours
Julie and Kyle work together to pack a total of 40 hampers
Work done by Julie in one hour = 18/5
Work done by Kyle = 14/4
Work done all together
14/4 * 4 + 18/5 *5 = 40 * 1/x
14+18/40 = 1/k
K = 40/32 = 1.25 hours
Help me please! I need to get this done to go outside :(
Answers
Answer:
98ft.
Step-by-step explanation:
Question is asking for the total square feet of laminate wood to cover the entire retail store. Add all the sides together to get your answer.
What is the lateral surface area?
7 A cylindrical pipe measures 18 inches and has a diameter of 1 inch. How many square inches of metal
are used to make the pipe, which is open on both ends? Round your answer to the nearest hundredth.
1 2 3
4
5 6
7
8
9
10
Next
M
Answers
Jay went on a diet and lost 5 pounds each month. Find Jay's net weight change in 6 months.
Answers
Answer:
a 30 pound weight change in 1 month
Step-by-step explanation:
5 pounds
--------------- times 6 months results in a 30 pound weight change in 1 month
1 month
A container of water holds 128 fluid ounces. Tyler drinks 4 fluid ounces of water every hour.
_________________ fluid ounces are in the container after 8 hours
(look at picture for more understanding)
Answers
Answer:96
Step-by-step explanation: 4x8 = 32 so there will be 32 fluid ounces gone. subtract that from 128 to get 96.
4+2/5+2/5+1/25 pls help me its for me home work
Answers
The answer in fraction form is in the picture
Answer:
4.84
Step-by-step explanation:
4+2/5+2/5+1/25
what's the volume of a figure with that is 10 inches wide, 3 inches tall, and 5 inches long
Answers
Answer:
10 x 3 x 5 = a
What is the gradient of the graph shown?
Give your answer in its simplest form.
Answers
Answer:
use desmos graphing calculator to help you find the answers
Step-by-step explanation:
x axis=(2,0)
y axis=(0,-4)
y intercept=-4
slope=3/2
Use the formula L= 10 log 10 R, where Is the loudness of a sound and R is the sound's relative intensity. to find out how much louder 20 people talking would be than one person talking. Suppose the sound of one person talking has a relative intensity of 80 decibels.
Answers
Answer:
[tex]X=24.1decibels[/tex]
Step-by-step explanation:
From the question we are told that:
Loudness function [tex]L= 10 log_{10} R[/tex]
Sound of a person [tex]S_p=80\ decibels\ or 10^8[/tex]
Number of persons talking [tex]n=20 people[/tex]
Generally the Relative intensity for 20 people is mathematically given by
Relative intensity for[tex]R_{20}=[/tex][tex]20*10^8[/tex]
Relative intensity for[tex]R_{20}=[/tex][tex]20^8[/tex]
Generally the loudness for 20 people is mathematically given by
[tex]L_{20}= 10 log_{10} R[/tex]
[tex]L_{20}= 10 log_{10} 20^8[/tex]
[tex]L_{20}= 10 (8 log_{10} 20)[/tex]
[tex]L_{20}= 104.1 decibels[/tex]
Therefore increase in loudness X is given as
[tex]X=104.1-80=-52.90[/tex]
[tex]X=24.1decibels[/tex]
WILL GIVE BRAINLIEST
Which expressions are difference of squares? Select all correct answers.
x2 + y2
x8 - 4
y2 - 25
x2 + 9
(the numbers next to the x's are exponents, i dont know how to write them on here)
Answers
Answer:
I think is x2-y2 cause the number have to be next to
Tom spends 30% of his monthly budget on rent. His total monthly budget is 3,000 how much does Tom spend on rent?
Answers
Answer:
Total rent= $900
Step-by-step explanation:
Giving the following information:
Total monthly budget= $3,000
Percentage of rent in the budget= 30%
To calculate the monetary value paid in rent, we need to use the following formula:
Total rent= percentage of rent paid*total monthly budget
Total rent= 0.3*3,000
Total rent= $900
I need help on finding the inverse for this help me.
Answers
The World Health Organization (WHO) suggests having 23 health-care workers for every 10,000 people. How many health-care workers are needed to meet the suggestion of 250,000 people? Justify your answer using a graph.
Answers
Answer:
The correct answer is 575.
What is the value of X
enter your answer in the
box X=
Answers
Answer:
What is the value of X I would say it is 52
Which piecewise function is shown on the graph?
Answers
Answer:
Option A
Step-by-step explanation:
Just substitute each value of x in the graph to find the correct function.
When be graph the functions given, we find that option A is correct.
What is meant by to graph a function?To graph a function, you have to select x-values and plug them into the equation. Once you plug those values into the equation, you will get a y-value. Your x-values and your y-values make up your coordinates for a single point. Keep plugging in x-values to get coordinates to plot more points on the graph, and then you will see your graphed function once the dots are connected.
Using the graph,
For x < = -2, y = 5.
For -2 < x < 1, the function is a polynomial.
We have two options, either [tex]y = x^{2} -5\ or\ y = x^{2} +5[/tex]
The polynomial must have the point (0,-5) on it.
For [tex]y = x^{2} -5[/tex] , when x = 0, y = -5.
Hence, it is the correct option.
For x >= 1,
Using graph, we see that when y = 0, x lies between 3 and 4.
For equation, [tex]y = 2^{(x-2)} - 2\\[/tex], when y = 0, x = 3, so it is not correct.
For equation, [tex]y = 2^{(x-2)} - 3\\[/tex], when y = 0, x = 3.584, hence it is correct.
Learn more about graphing a function here
https://brainly.com/question/27757761
#SPJ2
help me im adding and subtracting integers plssss 40 points!!!!!! for it
Find each sum.
8 + (-1) + (-6) + 5
- 2 + 6 + (-3) + (-4)
Use a number line to find each difference.
7 - 4
3 - 8
- 2 - (-3)
- 1 - (-1)
- 4 - 3
81 - 106
43 - (-21)
- 25 - (-57)
17 - 18 - (-81)
- 18 - 13 - 12
23 - (-18) - (-54)
16 - 28 - (-38)
Answers
Answer and Step-by-step explanation:
Simply just adding and subtracting.
8 - 1 - 6 + 5 = 6
-2 + 6 - 3 - 4 = -3
-- 4 is 3 away from 7. The answer is positive 3.
-- The answer is negative 5.
-- The answer is positive 1.
-- The answer is 0.
-- The answer is negative 7.
-- The answer is -25.
-- The answer is 64.
-- The answer is 32.
-- The answer is 80.
-- The answer is -43.
-- The answer is 95.
-- The answer is 26
#teamtrees #PAW (Plant And Water)
solve for x
[tex]\frac{7}{x+4}[/tex] = 4
Give your answer as an improper fraction in its simplest form.
Answers
Answer:
-9/4 = x
Step-by-step explanation:
4 is the same as 4/1
this problem is a proportion which can be solved by cross-multiplying:
7 = 4(x+4)
7 = 4x + 16
-9 = 4x
-9/4 = x
Please help thank youu!
Answers
Answer:
the answer would be 11. bc 2 x 3=6 + 5= 11
U have to substitute the y for 3
Answer:Y = -7
Step-by-step explanation:
Write the algebraic expression that matches each graph ...y = ___
Answers
Answer:
"absolute value function," y = |x|
Step-by-step explanation:
This is the graph of the "absolute value function," y = |x|.
Luis scored 22 out of 49 shots. How many would he be expected to score in 100 shots
Answers
Answer:
73
Step-by-step explanation:
first subtract 22 from 49 then you would get 27 so you would just subtract 27 from 100.
answer this question for brainilest and 30 points
Answers
WILL MARK BRAINLIEST A bag contains 16 marbles. There are 4 green, 10 red, and 2 blue marbles. One marble is selected at random. Determine whether each statement correctly describes the likelihood of an event based on the given bag of marbles. Select True or False for each statement.
True False
1) It is unlikely that a blue marble will be selected.
2) It is certain that a green marble will be selected.
3) It is impossible that a yellow marble will be selected.
4) It is unlikely that a red marble will be selected.
Answers
Explain: it could not be certain unless there was 16 green and it is likely that red would be picked as it is the most common
Answer:
1 is FALSE
2 is TRUE
3 is FALSE
4 is FALSE
Step-by-step explanation:
1 is false because the blue marble is 2 only
2 is true because green marble has a 100% you get this.
3 is false because we din't have yellow marble
4 is false because red is has 10 marble so you get this red marbke is has 82% because red marble is 2nd most at the number of color
BRAINLIEST TO CORRECT ANSWER!!! NO links as answers, or you will be reported!! (question 4)
Answers
Answer:
Hello! Your answer would be, C) Divide by 2
Step-by-step explanation:
And plz don't be mean. :(
Hope I helped! Brainiest plz!♥ Have a nice afternoon. Hope you make a 100%! -Amelia
how do I find the volume?
Answers
Answer:
Width x length
Step-by-step explanation:
Find the width or how wide it is
Then find the length or how long it is
multiply those
Which of the following is equivalent to(x2+6x+9)
(x-3)(x+3)
(x+2)(x-7)
(x-6)(x+3)
(x+3)2
Answers
Please answer fast.
