Answers
Answer:
The answer is
[tex]\frac{84 - 31 \sqrt{6} }{30} [/tex]Step-by-step explanation:
[tex] \frac{5 \sqrt{3} - 4 \sqrt{2} }{4 \sqrt{3} + 3\sqrt{2} } [/tex]To rationalize the denominator multiply both the numerator and the denominator by
4√3 - 3√2
That's
[tex] \frac{5 \sqrt{3} - 4\sqrt{2} }{4 \sqrt{3} + 3 \sqrt{2} } \times \frac{4 \sqrt{3} - 3 \sqrt{2} }{4 \sqrt{3} - 3 \sqrt{2} } [/tex]So we have
[tex] \frac{(5 \sqrt{3} - 4 \sqrt{2})(4 \sqrt{3} - 3 \sqrt{2}) }{(4 \sqrt{3} + 3 \sqrt{2} )(4 \sqrt{3} - 3 \sqrt{2} ) } \\ = \frac{60 - 15 \sqrt{6} - 16 \sqrt{6} + 24 }{16(3) - 9(2)} \\ = \frac{84 - 15 \sqrt{6} - 16 \sqrt{6} }{48 - 18} \\ = \frac{84 - 31 \sqrt{6} }{48 - 18} [/tex]We have the final answer as
[tex] \frac{84 - 31 \sqrt{6} }{30} [/tex]Hope this helps you
Related Questions
hello please help ASAP thank you!
Answers
Answer:
I believe it is 1.
Step-by-step explanation:
1. because thats half
Given that a rectangle has a length of 5/2x + 10 with a width of 5/2x + 5, formulate an expression to represents the area of the rectangle.
Answers
Answer:
A = ²⁵/₄x² + ⁷⁵/₂x + 50Step-by-step explanation:
L = ⁵/₂x + 10
W = ⁵/₂x + 5
A = L•W
A = (⁵/₂x + 10)(⁵/₂x + 5)
A = ⁵/₂x•⁵/₂x + ⁵/₂x•5 + 10•⁵/₂x + 10•5
A = ²⁵/₄x² + ²⁵/₂x + ⁵⁰/₂x + 50
A = ²⁵/₄x² + ⁷⁵/₂x + 50
Or if yoy mean:
L = 5/(2x) + 10
W = 5/(2x) + 5
A = [5/(2x) + 10][5/(2x) + 5] = 25/(4x²) + 75/(2x) + 50
what is repeating .67 as a fraction?
Answers
Answer:
67-100
Step-by-step explanation:
This is the answer because the . is ones the 6 is tens and the 7 is the hundreds
1. The subsets of the real numbers can be represented in a Venn diagram as shown. To which subsets of real numbers does 12 belong? A) Integers and Whole Numbers only B) Rational Numbers, Integers, and Whole Numbers C) Rational Numbers and Integers only D) Irrational Numbers, Integers, and Whole Numbers 2. Which statement BEST describes the relationship between whole numbers and natural numbers shown in the diagram? A) The diagram shows that whole numbers are a subset of natural numbers, because all whole numbers are natural numbers. B) The diagram shows that natural numbers are a subset of whole numbers, because all natural numbers are whole numbers. C) The diagram shows that whole numbers are a subset of natural numbers, because some whole numbers are not natural numbers. D) The diagram shows that natural numbers are a subset of whole numbers, because all whole numbers and natural numbers have no numbers in common.
Answers
2. D) The diagram shows that natural numbers are a subset of whole numbers, because all whole numbers and natural numbers have no numbers in c
1. C) Rational Numbers and Integers only
2. D) The diagram shows that natural numbers are a subset of whole numbers, because all whole numbers and natural numbers have no numbers in c.
In mathematics, a rational number is a number such as −3/7 that can be expressed as the quotient or fraction p/q of two integers, a numerator p and a non-zero denominator q. Every integer is a rational number: for example, 5 = 5/1
18 cans of soda cost $6.48. What is the cost per can in dollars? Please help, I'm in a hurry
Answers
Answer:
36 cents
Step-by-step explanation:
In order to figure out how much one can cost you need to do 6.48/18 which then gets you 33 cents, the cost of one can.
rewrite expression in the form k*z^n
Answers
Answer:
9z
Step-by-step explanation:
4th root of z = z^1/4
=> 3 * z^1/4
=> 3z^1/4
3z^1/4 * 3z^3/4
=> 3 x 3 x z^1/4 + 3/4
=> 9z^4/4
=> 9z^1
=> 9z
The expression [tex]3\sqrt[4]{z}~.~3z^{\frac{3}{4} }[/tex] in the form k . [tex]z^{n}[/tex] is 9z.
We are given:
= [tex]3\sqrt[4]{z}~.~3z^{\frac{3}{4} }[/tex]
We need to write this in the form of :
= [tex]k~.~z^{n}[/tex]
What are exponents and powers?We use exponents and powers when we want to write very large numbers or very small numbers in a simplified manner.
Example:
8 = 2 x 2 x 2 = [tex]2^{3}[/tex].
Where 2 is the base and 3 is the exponents.
72 = 8 x 9 = [tex]2^{3} \times3^{2}[/tex].
Here we have two bases 2 and 3 and two exponents 3 and 2.
8 / 9 = [tex]\frac{2^{3} }{3^{2} }[/tex] = [tex]2^{3} \times3^{-2}[/tex].
Here the bases are 2 and 3 and exponents are 3 and -2.
We have
[tex]3\sqrt[4]{z}~.~3z^{\frac{3}{4} }[/tex]
Here,
[tex]\sqrt[4]{z}[/tex] can be written as [tex]z^{\frac{1}{4} }[/tex].
[tex]z^{\frac{1}{4} }~.~z^{\frac{3}{4} }[/tex] can be written as :
[tex]z^{\frac{1}{4} +\frac{3}{4} }\\\\ z^{\frac{4}{4} } \\\\z^{1} = z[/tex]
Now we have,
3 x 3 x [tex]z^{\frac{1}{4} }[/tex] x [tex]z^{\frac{3}{4} }[/tex]
3 x 3 x z
[tex]3^{2}[/tex] x z
9 x [tex]z^{1}[/tex]
So, comparing with k . [tex]z^{n}[/tex]
we have,
k = 9 and n = 1.
The expression [tex]3\sqrt[4]{z}~.~3z^{\frac{3}{4} }[/tex] in the form k . [tex]z^{n}[/tex] is 9z.
Learn more about exponents and powers here:
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A company needs two loads of sand to make an indoor beach area when employee picnic one load of sand weigh 4 tons and the other load Waze 7500 pounds what is the total weight of sand in pounds
Answers
Answer:
15500 pounds
Step-by-step explanation:
The weight of one load is 4 tons and the weight of other load is 7500 pounds.
We know that, 1 ton = 2000 pounds
4 tons = 8000 pounds
Total weight = 8000 pounds + 7500 pounds
Total weight = 15500 pounds
So, the total weight of sand is 15500 pounds.
You want to put a logo on each cell phone holder you make. Sew-on logos cost 2.30 for 10. Stick-on logos cost 9.40 for 100. Divide the cost by the number of logos for both types
Answers
Answer:
[tex]Rate = \$0.23[/tex] and [tex]Rate = \$0.094[/tex]
Step-by-step explanation:
Given
Sew-on logos
Cost = $2.30
Units = 10
Stick-on logos
Cost = $9.40
Units = 100
Required
Divide cost by units, in both cases
When we divide cost by units, it gives the unit rate.
i.e.
[tex]Rate = \frac{Cost}{Units}[/tex]
FOR SEW-ON LOGOS
Substitute $2.30 for Cost and 10 for Units
[tex]Rate = \frac{\$2.30}{10}[/tex]
[tex]Rate = \$0.23[/tex]
FOR STICK-ON LOGOS
Substitute $9.40 for Cost and 100 for Units
[tex]Rate = \frac{\$9.40}{100}[/tex]
[tex]Rate = \$0.094[/tex]
Hence, the solution is
[tex]Rate = \$0.23[/tex] and [tex]Rate = \$0.094[/tex]
why is -15/3 classified as an integer and not a rational number, even though it is a fraction.?
Answers
Answer:
see below
Step-by-step explanation:
Can we simplify the number
-15/3 simplifies to -5, which is an integer
We categorize the number to its smallest category and integer contains less than rational
15 and 17 pls.. 15 points!!!!
Answers
Step-by-step explanation:
15) 50 ÷ 2 = 25
17) Mean = 301, Mode = 40-50
(10+20) ÷ 2 = 15, (20+30) ÷ 2 = 25, (30+40) ÷ 2 = 35
(40+50) ÷ 2 = 45, (50+60) ÷ 2 = 55, (60+70) ÷ 2 = 65
(70+80) ÷ 2 = 75
• 15×4 = 60, 25×8 = 200, 35×10 = 350, 45×12 = 540
55×10 = 550, 65×4 = 260, 75×2 = 150
Mean = (60+200+350+540+550+260+150) ÷ 7
= 2110 ÷ 7
= 301.4285....
= 301
Mode : the highest frequency
Answer:
15) 50 ÷ 2 = 25
17) Mean = 301, Mode = 40-50
(10+20) ÷ 2 = 15, (20+30) ÷ 2 = 25, (30+40) ÷ 2 = 35
(40+50) ÷ 2 = 45, (50+60) ÷ 2 = 55, (60+70) ÷ 2 = 65
(70+80) ÷ 2 = 75
• 15×4 = 60, 25×8 = 200, 35×10 = 350, 45×12 = 540
55×10 = 550, 65×4 = 260, 75×2 = 150
Mean = (60+200+350+540+550+260+150) ÷ 7
= 2110 ÷ 7
= 301.4285....
= 301
Mode : the highest frequency
Find the distance between the two points. (-6,-10) & (-2,-10)
Answers
Answer:
The answer is 4 unitsStep-by-step explanation:
The distance between two points can be found by using the formula
[tex]d = \sqrt{( {x1 - x2})^{2} + ({y1 - y2})^{2} } \\ [/tex]where
(x1 , y1) and (x2 , y2) are the points
From the question the points are
(-6,-10) & (-2,-10)
The distance between them is
[tex]d= \sqrt{ ({ - 6 + 2})^{2} + ({ - 10 + 10})^{2} } \\ = \sqrt{ ({ - 4})^{2} + 0} \\ = \sqrt{16} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: [/tex]We have the final answer as
4 unitsHope this helps you
10k4 ⋅ (−9k3) how to solve this
Answers
Answer:
The product of the terms in the given expression is -90k⁷
Step-by-step explanation:
10k⁴ · (-9k³)
When we multiply exponents, then we are going to add the exponential together. So, we will add 4 and 3 together which is 7. Since our base numbers are different, then we also multiply them together. So, we will multiply 10 by -9 which is -90.
-90k⁷
Which words represent SUBTRACTION
less than
sum
difference
total
Answers
Answer:
I think it's sum and difference
Answer:
less than and difference
Step-by-step explanation:
Help Plzzz.........
Answers
Answer:
£7448
Step-by-step explanation:
Simple interest (I) is calculated as
I = [tex]\frac{PRT}{100}[/tex]
P is principle ( amount invested), R is rate of interest and T is time in years.
Here P = £5600, R = 11 and T = 3 , thus
I = [tex]\frac{5600(11)3)}{100}[/tex] = £1648
Value after 3 years = £5600 + £1848 = £7448
What is the solution to this equation?
Answers
Answer:
x = -7/2
Step-by-step explanation:
(1/4) ^ (x+1) = 32
Rewriting 32 as 2^5 and 1/4 and 2^-2
2^-2 ^ (x+1) = 2^5
We know that a^b^c = a^ ( b*c)
2 ^ (-2x-2) = 2 ^ 5
Since the bases are the same, the exponents have to be the same
-2x-2 = 5
Add 2 to each side
-2x = 7
Divide by -2
x = -7/2
3) Walt and 23 of his friends are going on a month-long
camping trip. Bags of marshmallows come with about 38
marshmallows per bag. They decide to bring 12 bags of
marshmallows to the trip. How many marshmallows will
each person get if they each eat the same number of
marshmallows and eat all of the marshmallows at camp?
Answers
Answer:
19 marshmallows per person.
Step-by-step explanation:
So, 38 marshmallows per bag and 12 bags were brought.
38 x 12 = 456
Walt and 23 of his friends - 24 people
456/24 = 19 marshmallows
If m∠XWZ = 90, what is x?
Right angle X W Z is divided into 2 acute angles labeled 5 x plus 5 degrees and 2 x plus 8 degrees.
Answers
Answer: x=11
Step-by-step explanation:
If m∠XWZ = 90 and is divided into 2 acute angles labeled 5x+5 degrees and 2x+8 degrees then the value of x is 11.
Given,
m∠XWZ = 90.
Right angle ∠XWZ is divided into 2 acute angles labeled as:
- 5x + 5 degrees
- 2x + 8 degrees.
We need to find the value of x.
What is an acute angle?An acute angle means angles that are less than 90 degrees.
If an angle is divided, the sum of the divided angles must be equal to the angle divided.
Find the right angle.
m∠XWZ = 90
Find the acute angles that are being divided.
= 5x + 5° and 2x + 8°
Find x.
Since m∠XWZ is divided we have,
90° = 5x + 5° + 2x + 8°
Now,
Add the like terms.
90 = 7x + 13
Subtract 13 on both sides.
90 - 13 = 7x
77 = 7x
Divide both sides by 7.
11 = x
x = 11
We can crosscheck the angles:
90° = 5x + 5° + 2x + 8°
90 = 5x11 + 5 + 2x11 + 8
90 = 55 + 5 + 22 + 8
90 = 60 + 30
90 = 90
Thus if m∠XWZ = 90 and is divided into 2 acute angles labeled 5x+5 degrees and 2x+8 degrees then the value of x is 11.
Learn more about finding the value of angles here:
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Consider a rectangle with width of x units and an area of 10 square units. The length l of the rectangle can be modeled by the function l(x)=10/x. Suppose the width of the rectangle increases 1 unit while the area remains constant. Which graph models the length of the new rectangle
Answers
Answer: answer is C
Step-by-step explanation:
The question asks us to find the a graph which represents the width of the rectangle increasing by 1 unit while the area remains constant. The best graph to model this, would be answer choice C
Please answer for me way to hard for me its pre algera
Answers
Answer:
It probably has to deal with a joke or som10.
Step-by-step explanation:
Answer:
1. I
2. R
3. R
4. I
5. W
6. I
7. W
8. I
Step-by-step explanation:
A washer and a dryer cost $600 combined. The cost of the washer is three times the cost of the dryer. What is the cost of the dryer?
Answers
Answer:150
Step-by-step explanation:
600/4=150 (150)3=450 450+150=600
Answer: 150 dollars
Step-by-step explanation: Because the dryer is equal to washer divided by 3 you can substitute Washer/3 in the equation
W+ W/3=600
multiply both sides by 3
3W+W=1800
4W=1800
Divide both sides by 4
The answer to W is 450 dollars which you then divide by three to get 150 dollars
82, 77, 72, 67, 62 ....... The recursive pattern in the sequence above is latex-_ (be sure to show if it is positive or negative). The 4th term in the sequence is . An explicit formula that I can use to write for this sequence is latex-_ . The value of the 100th term is .
Answers
Answer:
a. It is a negative pattern
b. Fourth term is 67
c. Explicit formula is Tn = 87 - 5n where n is the number of the term.
d. The value of the 100th term is -413
Step-by-step explanation:
1.Firstly, we want to know if the pattern is positive or negative.
Looking at the pattern, we can see our first term as 82, second as 77, third as 72.
What this show is that the pattern is decreasing as we move on from one term to another. So we can say it is a negative recursive pattern.
2. We are asked which term is the 4th.
This is quite obvious from the spelt out pattern.
82 77 72 67
1....2......3.....4
67 is the fourth term.
3. We want an explicit formula for the sequence.
What this question is asking us is a formula such that we can use at any point in time to calculate the value of the term at that point.
Firstly we have the first term as 82.
We need the common difference.
Mathematically this is the second term minus the first term which is same as the third term minus the second term.
That would be; 77-82 = 72-77 = -5
Mathematically the nth term of an arithmetic sequence is;
Tn = a + (n-1) d
Where in this case a is 82 and d is -5
Substituting these values, we have;
Tn = 82 + (n-1)-5
Tn = 82 -5n + 5
Tn = 82 + 5 -5n
Tn = 87 -5n
Where Tn is the term we are looking for while n is the number of the term.
4. Value of the 100th term
Simply substitute the value of 100 for n in the explicit formula.
That would be;
87 -5(100) = 87-500 = -413
ns
What personal qualities do you think Rudolph displayed to help her challenge people's
expectations?
pok
Answers
A lawn company advertises that they can spread 7,500 square feet of grass seed in 2 and a half hours. Find the number of square feet of grass seed that can be spread per hour.
Answers
Answer:
3000 square feet
Step-by-step explanation:
Divide 7,500 by 2.5:
7500/2.5
= 3000
So, 3000 square feet of grass seed can be spread per hour
Which expression represents the phrase “twice the quotient of 50 and a sum of a number y and 8
Answers
Answer:
2 * 50/(y + 8)
Step-by-step explanation:
"twice the quotient of 50 and a sum of a number y and 8"
y + 8
"twice the quotient of 50 and a sum of a number y and 8"
50/(y + 8)
"twice the quotient of 50 and a sum of a number y and 8"
2 * 50/(y + 8)
Answer:
2*50/ (8+y)
Step-by-step explanation:
twice the quotient of 50=2*50 divided by something
the sum of a number= y and 8
So... 2*50/ (8+y) is the answer
Find the value of x in the equation below. 12+x = 16.7
Answers
Answer:
[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{x = 4.7}}}}}[/tex]
Step-by-step explanation:
[tex] \sf{12 + x = 16.7}[/tex]
Move 12 to right hand side and change it's sign
[tex] \dashrightarrow{ \sf{x = 16.7 - 12}}[/tex]
Subtract 12 from 16.7
[tex] \dashrightarrow{ \sf{4.7}}[/tex]
Hope I helped!
Best regards!
Answer:
[tex]\huge\boxed{\sf x = 4.7}[/tex]
Step-by-step explanation:
12 + x = 16.7
Subtracting 12 to both sides
x = 16.7 - 12
x = 4.7
The second side of a triangular deck is 3 feet longer than the shortest side, and the third side is3 feet shorter than twice the length of the shortest side. If the perimeter of the deck is 52 feet, what are the lengths of the three sides?
Answers
Answer:
13, 16, 23
Step-by-step explanation:
The first side is x.
The second side is x + 3
The third side is 2x - 3
(x) + (x +3) + (2x - 3) = 4x
4x = 52
x = 13
-6=-2+w solve the equation
Answers
Answer:
w = -4
Step-by-step explanation:
Answer:
w = -4
Step-by-step explanation:
[tex]-6=-2+w\\[/tex]
Switch sides
[tex]-2+w=-6[/tex]
Add 2 to both sides
[tex]-2+w+2=-6+2[/tex]
Simplify
[tex]w=-4[/tex]
Which interval notation represents the set of all numbers from -9 to 0, inclusive?
Answers
Answer:
[-9,0]
Step-by-step explanation:
You use brackets to indicate that the numbers, in this case -9 and 0, are included in the interval.
You use parentheses to indicate that the numbers are excluded from the interval.
Since we want to include the numbers in the interval, we use the brackets.
The answer is [-9,0]
Hope this helps!
Evaluate: 20/ 5·2^-3
Answers
0.125 x 5 = 0.625
20/0.625 = 32
The answer is 32.
Step-by-step explanation:
[tex] = \frac{20}{5} . {2}^{ - 3} [/tex]
[tex] = 4. \frac{1}{ {2}^{3} } [/tex]
[tex] = \frac{4}{2 \times 2 \times 2} [/tex]
[tex] = \frac{4}{8} [/tex]
[tex] = \frac{1}{2} [/tex]
what's 43 to the nearest hundred
Answers
Answer:
0
Step-by-step explanation:
43 rounded to nearest hundred is 0 because 43 is more closer to 0 than to 100.