Answers
Answer:
I think 4.932651
Step-by-step explanation:
Answer:
Oh! that expression is equal to 4
Step-by-step explanation:
\(\sqrt{2\sqrt{7} -\sqrt{12} } \cdot \sqrt{2\sqrt{7} +\sqrt{12} }\)
First, rewrite \(\sqrt{12} =\sqrt{2 \cdot 2 \cdot 3}=2\sqrt{3}\)
\(\sqrt{2\sqrt{7} -2\sqrt{3} } \cdot \sqrt{2\sqrt{7} +2\sqrt{3} }\)
\(\sqrt{2\sqrt{7} -2\sqrt{3} } \cdot \sqrt{2\sqrt{7} +2\sqrt{3} }\)
Now we got a difference of two squares, therefore,
\((2\sqrt{7} -2\sqrt{3})(2\sqrt{7} +2\sqrt{3})=(2\sqrt{7} )^2-(2\sqrt{3})^2=\)
\(= (4 \cdot 7)-(4 \cdot3)=28-12=16\)
\(\sqrt{2\sqrt{7} -2\sqrt{3} } \cdot \sqrt{2\sqrt{7} +2\sqrt{3} }=\sqrt{16}\)
\(\sqrt{16} = 4\)
Related Questions
The graphs of functions f(x) and g(x) = f(x) + k are shown below
what is the value of k?
Answers
Answer:
k = 2
Step-by-step explanation:
f(x) and g(x) = f(x) + k
G(x) is the function f(x) moved up k units
G(x) is moved up 2 units so k is 2
Answer:
The answer is k = 2. The value of k is 2.
Step-by-step explanation:
I hope this answers your question :) Have a great day :)
help!! help!!!!! help!!!!!!! help!!!!!!! help!!!!!!! help!!!!!!! help!!!!!!! help!!!!!!! help!!!!!!! help!!!!!!! help!!!!!!! help!!!!!!! help!!!!!!! help!!!!!!! help!!!!!!! help!!!!!!! help!!!!!!! help!!!!!!!
Answers
Answer:
B,C,E
Step-by-step explanation:
Answer:
Second one third one and fifth one I think
In 1-3 sentences, explain how we know that the volume of a pyramid is V=1/3Bh
(you don’t have to write them for me, but i need help in like...an explanation?)
Answers
Answer: The formula for finding the volume of a pyramid is V=lwh/3. Taking this into consideration, the length times width times height must be one, which is then put over three.
Step-by-step explanation:
The graphed line passes through the origin. Which equation represents the line?
y=3/5x
y=5/3x
y=-5/3x
y=-3/5x
Answers
The line is going down as you move further to the right, which shows that it is a negative slope.
Slop is rise/run. So, looking at the point, you can see that it is 5 units vertically, for every 3 units across, as shown but the -3 value.
So for rise over run, you would either count the rise and the run, or if it goes through the origin, identify a point (-3,5) is given, and flip it for y=-5/3
OK so basically u just guess and my senses were right lol
WILL GIVE THE BRAINLIEST IF CORRECT. PLEASE HELP THIS IS MY LAST CHANCE What did the king of England order in his Proclamation of 1763?
Responses
Colonists had to pay taxes to support the British during the French and Indian War.
Native American nations could not own land anywhere on the continent.
The colonies were required to elect a body of representatives that would meet with the king.
Colonists could only claim land east of the Appalachian Mountains.
Answers
Answer:
Colonists had to pay taxes to support the British during the French and Indian War.
Step-by-step explanation:
Thank you for giving me the chance to answer this question.
Please mark brainliest (I'm about to level up) thank you and have a good day! :)
A trader has purchased ball pens at the rate of Rs. 42 per dozen. If he sells each ball
pen for Rs. 5, he gets
(A) profit of Rs. 8 (B) profit of Rs. 18 (C) loss of Rs. 18 (D) loss of Rs.8
Answers
Answer:
im confused
Step-by-step explanation:
Answer:
(B)
Step-by-step explanation:
The total would be Rs. 60, so a profit of Rs. 18. Also, please mark brainliest.
Estimate: 4.1 * 7.8 *2.3
Answers
Answer:
yea yeah
Step-by-step explanation:
singing challenge
The members of a student council held a car wash to earn money for a field trip. The equations represent how they calculated their earnings.
5c+8v=234
c=2v
If c represents the number of cars and v represents the number of vans, which pair of sentences best describe the results of the fundraiser?
Answers
Answer: They charged $5 per car, $8 per van, and earned a total of $234 they washed twice as many cars as vans.
Step-by-step explanation: hope this helps
Answer the question below:
Answers
Based on the information, it can be inferred that the difference in the circumference of the two circles is 6.31 cm.
How to calculate the circumference of a circle?To calculate the circumference of a circle we must apply the following formula:
2\(\pi\)RR = Radius of the circle.According to the previous formula, we must replace R with the radius of each of the radii of both circles as shown below:
2\(\pi\)1 = 6.282\(\pi\)2 = 12.59So, to find the difference of the circumferences of both circles we must subtract the smaller number (circumference of the small circle) from the larger number (circumference of the large circle).
12.59 - 6.28 = 6.31According to the above, the difference of the circumferences would be 6.31 cm.
How to calculate the area of the circle?To calculate the area of the circle we must apply the following formula.
A =\(\pi r^{2}\)
r = radio del círculo.
According to the above, the radiO of both circles would be:
\(\pi 1^{2}\) = 3.14\(\pi 2^{2}\) = 25.13Additionally, to find the difference we must subtract these values:
25.13 - 3.14 = 21.99Learn more about circles in: https://brainly.com/question/29142813
#SPJ1
Based on the information, it can be inferred that the difference in the circumference of the two circles is 6.31 cm.
How to calculate the circumference of a circle?
To calculate the circumference of a circle we must apply the following formula:
2R
R = Radius of the circle.
According to the previous formula, we must replace R with the radius of each of the radii of both circles as shown below:
21 = 6.28
22 = 12.59
So, to find the difference between the circumferences of both circles we must subtract the smaller number (circumference of the small circle) from the larger number (circumference of the large circle).
12.59 - 6.28 = 6.31
According to the above, the difference in the circumferences would be 6.31 cm.
How to calculate the area of the circle?
To calculate the area of the circle we must apply the following formula.
A =
r = radio del círculo.
According to the above, the radiO of both circles would be:
= 3.14
= 25.13
Additionally, to find the difference we must subtract these values:
25.13 - 3.14 = 21.99
Calculate the value of x^3+y^2 of x=4 and y=6
Answers
smb help me
which 3 sides lengths BEST describes the triangle in the diagram
Answers
Answer:
C: 5cm, 12cm, and 13 cm :)
Step-by-step explanation:
photo below; brainliest will be given :)
Answers
Answer:
10 times 8= 80 then 80 times 6 =480
Step-by-step explanation:
10 times 8= 80 then 80 times 6=480
PLS HELP NOW I DONT UNDERSTAND
Answers
Answer:
4 seat tables 6 seat tables
1 26
4 24
7 22
10 20
13 18
16 16
19 14
22 12
Step-by-step explanation:
the 4 seat tables was adding by 3
the 6 seat tables was subtracting by 2
Three research departments have 8 ,10 , and 7 members, respectively. Each department is to select a delegate and an alternate to represent the department at a conference. In how many ways can this be done?
Answers
We can conclude that exists 211680 ways.
How many ways can this be done?We know that the three research department is have 8, 10, and 7 members.
We choose a delegate and an alternate to represent the department.
First case: department have 8 members.
So, for a delegate, we have 8 options, and for a alternate 7, so a total of
\(8 \times 7 = 56 \ \text{options}\)
Second case: department have 10 members.
So, for a delegate, we have 10 options, and for a alternate 9, so a total of
\(10\times 9 =90 \ \text{options}\)
Third case: department have 7 members.
So, for a delegate, we have 7 options, and for a alternate 6, so a total of
\(7\times6 = 42 \ \text{options}\)
Therefore, we get:
\(56 \times 90 \times 42 = \bold{211680}\)
Hence, we conclude that exists 211680 ways.
For a similar problem about this, please click the link below:
https://brainly.com/question/30958797
For the first department with 8 members, there are 8 choices for selecting a delegate. After choosing a delegate, there remain 7 members, so there are 7 choices for selecting an alternate. Therefore, there are 8 × 7 = 56 ways to select a delegate and an alternate from the first department.
Similarly, for the second department with 10 members, there are 10 choices for selecting a delegate and 9 choices for selecting an alternate. Hence, there are 10 × 9 = 90 ways to select a delegate and an alternate from the second department.
For the third department with 7 members, there are 7 choices for selecting a delegate and 6 choices for selecting an alternate. Thus, there are 7 × 6 = 42 ways to select a delegate and an alternate from the third department.
To find the total number of ways to select delegates and alternates from all three departments, we multiply the number of choices for each department together:
56 × 90 × 42 = 211,680.
Therefore, there are 211,680 ways to select a delegate and an alternate from each department.
Jenny has 36 cupcakes. How many kids (including Jenny) can share these cupcakes evenly?
The number of kids who can share 36 cupcakes evenly could be:
Answers
36/?
Smallest amount of kids per cupcake is 1
36/1
36 kids
Can someone please help me with this question the instructions are to use a calculator to find the perimeter (the solid lines and curves) of each figure. The perimeter of each semicircle can be found by using the equation 1/2 pi d (the place where I put the words pi has the pi symbol, and d is just a variable. Also use 3.14 as pi, and the top part is cut off a little bit, but it still counts as a full semi circle. Please help me.
Answers
Answer:
The answer is 113.04(inch)
Step-by-step explanation:
2r=24(inch)
r=12(inch)
A circle perimeter 2r*pi .
A semicircle perimeter is (2r*pi)/2= r*pi.
3 semicircle perimeter are 3*r*pi = 3*12*3.14=113.04(inch)
What is an angle that is supplementary to BEC?
Answers
Answer:
Step-by-step explanation:
15 pointsssssssssssss
Answers
Answer:
thxs ig?
Step-by-step explanation:
i'll give brainliest to first person to answer!!
a triangular prism has a base area of 12cm2 and a height of 4cm
what is the volume?
3 cubic centimeters
24 cubic centimeters
124 cubic centimeters
48 cubic centimeters
Answers
Answer: 48
Step-by-step explanation:
V=48cm³
h Height 4 cm
AB Base area 12 cm
( I don't think this is the correct answer)
Answer: 48 cubic centimeters
Step-by-step explanation:
Go to go-ogle look up your answer and then you should be at this "Triangular prism" then you can put in the numbers and get the answer right and its really easy! I hope you have a nice day.
I'LL GIVE BRAINLIEST!!
( True / False ) Force is used in aristocracy.
If true how?
If false why?
Answers
Answer:
true
Aristocracy is a form of government in which political power is held by a select few privileged people called aristocrats or nobles. Coming from a Greek word meaning “rule by the best,” aristocrats are considered the most qualified to rule because of their moral and intellectual superiority.
What is the circumference of a circle with a radius of 11 cm? (Use pi = 3.24)
Circumference = 2piR
Answers
Answer:
Step-by-step explanation:
C = 2 x 3.24 x 11
C = 71.28
A = piR^2
A = 3.24 x 11^2
A = 392.04
The answer is 71.28
Circumference = 2piR
Substitute the values.
Circumference = 2(3.24)(11)
Circumference = 6.48(11)
Circumference = 71.28
The manager of a dress shop recorded the number of dresses sold during the week, the data is as follows:
17, 15, 16, 20, 15, 19
Find the mean deviation for this data.
Select one:
1.91
2.21
1.67
4.98
Answers
Answer: The answer is 1.67
Step-by-step explanation:
First, find the mean by adding all of the numbers and divide them by how many numbers there are, so 17+15+16+20+15+19=102 Then 102/6= 17. Then take the mean and subtract it by every number, and make sure it is the number’s absolute value.
17-17=0, 15-17=2, 16-17=1, 20-17=3, 15-17=2, 19-17=2. Then add all of those numbers and divide them by how many numbers there are. 0+2+1+3+2+2=10. 10/6=1.67
Answer:
1.67
Step-by-step explanation:
\(\frac{17 + 15 + 16 + 20 + 15 + 19}{6} = \frac{102}{6} = 17\)
distance from 17
17, 0
15, 2
16, 1
20, 3
15, 2
19, 2
\(\frac{0 + 2 + 1 + 3 + 2 + 2 }{6} = \frac{10}{6} = 1.67\)
The two dot plots below compare the forearm lengths of two groups of schoolchildren:
Based on visual inspection of the dot plots, which group appears to have the longer average forearm length? (5 points)
a
Group B, because three children in the group have the least forearm length of 11 inches
b
Group A, because three children in the group have the least forearm length of 11 inches
c
Group A, because seven children have a forearm length longer than 12 inches
d
Group B, because two children have a forearm length longer than 12 inches
Answers
Answer: B
Step-by-step explanation:looky
Classify each pair of numbered angles. 100 points!
Answers
The answer is perfectly accurate
The table here shows the land area in square miles of the five largest cities in the U.S. How much greater is the area of Juneau than the area of the next largest city?
Answers
Answer:
B.) 1020 mi ^2
Since the next largest city is Anchorage, Alaska you would just subtract Juneau's land area from Anchorage's land area.
2717 - 1697
= 1020
Juneau Alaska is 1020 mi ^2 greater than Anchorage Alaska.
Step-by-step explanation:
You're welcome.
Answer:
B
Step-by-step explanation:
The graph shows that while it was being filled, the amount of water in gallons in a
the swimming pool was approximately proportional to the time that passed in
minutes.
a. About how much water was in
the pool after 25 minutes?
b. Approximately when were
there are 500 gallons of water in
the pool?
c. Estimate the constant of
proportionality for the gallons
of water per minute going
into the pool
Answers
Answer:
1225
Step-by-step explanation:
multiply #s
Answer:
Super super super super super SUPER late but,
Step-by-step explanation:
If you look at the chart you can see 20 mins and then if you go to the point of 25 which would be between ( in the middle) of 20 and 30, then you would go up to the empty point that is followed up by the 20 and 30 and as you can see you get 380, so your first answer for number 1 would be 380 gallons
The second question um looking at the chart again if you would go to 35 then go up you can see 500 is how 35 Is your answer (about 35 mins)
The last one is 15 don't know how I got it but it's 15.
This is the chart that I use
heeeeeeeeeeeeeeeeelp me
Answers
Luis is cutting construction paper into rectangles for a project. He needs to cut one rectangle that is 12 inches × 13
1
3
inches. He needs to cut another rectangle that is 10
1
2
inches by 10
1
3
inches. How many total square inches of construction paper does Luis need for his project?
Answers
Answer: 356 total square inches
Step-by-step explanation: (12*13)+(10*10)=156+100=356 square inches
My brain hurts- please help-
The women’s basketball team played 25 home games and won 4/5 of them. They also won 2/3 of their 42 away games. How many games did they win in all?
Answers
Answer:
48
Step-by-step explanation:
so the first one is 25 times 4/5 to get 20
the next one is 2/3 times 42 to get 28
these are all the games they won so you add them to get 48
Answer:
25 x 4/5 = 20
42x2/3=28
20+28=48
Step-by-step explanation:
brainliest would be apricated
Last year, the school basketball team won 75% of their 32 games. How many games did the school basketball team win last year?show work pls
Answers
Answer:
24 games won
Step-by-step explanation:
Last year, the school basketball team won 75% of their 32 games. How many games did the school basketball team win last year?
75% = 0.75
32 * 0.75 = 24 games won
Answer:
24 games
Step-by-step explanation:
(75/100)*32
= (75*32)/100
= 2400/100
=24
hope this helps!