Answer:
7
Step-by-step explanation:
You have to do the square root of: (5-(-2)) squared pluse (2-2) squared
Now you have the square root of 7 squared
7 squared is 49, so you have the square root of 49
that equals 7
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The ratio of Richard and Ben's speed is 4:5. The ratio of Richard and Kim's speed is 3:2. If it takes Ben 8 minutes to get to a location, it's going to take Kim _____ minute(s) for the same distance. (FILL IN THE BLANK)
The time it would take Kim running the same distance is 15 minutes.
How long would it take Kim?
Ratio is used to show the relationship between two or more numbers. It shows the frequency that one value is contained within other value(s). The sign that is used to represent ratio is :.
Speed = distance / time
The first step is to determine the time spent by Richard running:
(4 x 1/8) / 5 = 1/10 or 10 minutes
The second step is to determine the time spent by Kim running:
(2 x 1/10) / 3 = 1/15 = 15 minutes
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Write each logarithmic expression as a single logarithm.
1/4 log₃2+ 1/4 log₃x
For the logarithm expression 1 / 4 log₃ 2 + 1 / 4 log₃ x, we get the single expression as 1 / 4 log₃ 2 x.
We are given the logarithm expression as:
1 / 4 log₃ 2 + 1 / 4 log₃ x
Now, take 1 / 4 common from the expression:
1 / 4 ( log₃ 2 + log₃ x)
Now, we know that log₃ a + log₃ b = log₃ ( a b)
So, we get that:
1 / 4 ( log₃ ( 2 x) )
1 / 4 log₃ 2 x
Therefore, for the logarithm expression 1 / 4 log₃ 2 + 1 / 4 log₃ x, we get the single expression as 1 / 4 log₃ 2 x.
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Solve. Check for extraneous solutions. (x-2)¹/₂ -(28-2 x)¹/₄=0
-4 is an extraneous solution.
The equation is
[tex](x - 2)^{1/2}[/tex] - [tex](28-2x^{1/4}[/tex] = 0
To know whether the given equation has an extraneous solution or not we need to find the value of x.
[tex](x-2^{1/2}[/tex]= [tex](28-2x)^{1/4}[/tex]
Multiply both sides with the power of 4, and we get
[tex](x- 2)^{2}[/tex] = 28-2x
[tex]x^{2}[/tex] - 4x + 4 = 28-2x
[tex]x^{2}[/tex] - 2x - 24= 0
[tex]x^{2}[/tex]- 6x + 4x -24=0
x(x-6) +4(x-6)=0
(x-6)(x+4) = 0
x = 6 , -4
Now put both the value of x in the equation
x=6
[tex](6-2)^{1/2}[/tex]-[tex](28- 2* 6)^{1/4}[/tex]= 0
[tex]4^{1/2}[/tex]- [tex]16^{1/4}[/tex]= 0
2-2=0
0=0
Now
x = -4
[tex](-4-2)^{1/2}[/tex]-[tex](28-2*-4)^{1/4}[/tex]=0
[tex](-6)^{1/2}[/tex] -[tex]36^{1/4}[/tex]=0
[tex](-6)^{2}[/tex] - [tex]6^{1/2}[/tex]=0
Which is not possible and a negative integer is not present in the square root.
Therefore we get the extraneous solution of the equation which is x= -4, and x = 6 is the solution of the equation.
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Each ordered pair is from an inverse variation. Find the constant of variation. (6,3)
The value of constant variation is 18.
Constant is what?A key integer with a stable value determined by a clear specification is referred to as a mathematical constant.
Inverse variation: what is it?connection in mathematics between two variables that may be described by an equation in which the sum of their products equals a constant
Inverse variation is y = k. 1/x
given y = 3
x = 6
So, 3 = k. 1/6
So, the value of k = 18.
We can conclude that the value of constant variation is 18.
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Find the real and imaginary solutions of each equation.
x⁴-14 x²+49=0
The given 4th order polynomial equation only has real solutions, x = √7 and x = –√7
The given equation is x⁴-14 x²+49 = 0.
This is a 4th degree polynomial equation.
Let p = x².
Then we can write x⁴-14 x²+49 = 0 as:
p²- 14p +49 = 0
This is a quadratic equation.
There are three ways to find the solutions of a quadratic equation:
By factoringBy completing the squareBy applying the quadratic formulaNotice that p²- 14p +49 = 0 can be written as a perfect square:
(p - 7)² = 0
Hence, it has only single real solution:
p - 7 = 0
p = 7
Substitute p = 7 into p = x², we get:
x² = 7
x = ± √7
The solutions are, therefore, x = √7 and x = –√7
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Factor the expression. 25-40 x+16 x²
Factor the expression 25-40 x+16 x² is [tex](4x-5)^2[/tex]
In mathematics, factorization is defined as breaking down or decomposing an entity (such as a number, matrix, or polynomial) into another entity or product of coefficients. Splitting the mean term means that the mean term of the quadratic must be rewritten as the sum or difference of two terms. The middle term should be split into two parts in terms of the sum or difference of the terms. The general form of the quadratic equation is [tex]ax^2+ bx +c=0[/tex]On rearranging the equation , we get
[tex]16x^2-40x+25=0[/tex] ...(1)
To split the middle term of the quadratic equation, we need to look at the middle term of the quadratic equation under consideration.
Midterm is 40 x , to split the middle term, use the sum-and-product form which is
" The sum-product form is the product of intermediate terms after splitting and must equal a × c and the sum must equal b "
[tex]f(x)=16x^2-40x+25[/tex]
here a = 16 , b = -40 and c = 25
We need to divide into 40x in two parts
40x = 20x + 20x
The product of the terms is [tex]16\times25=400[/tex]
Now we can rewrite 40x as 20x + 20x
Putting in equation (1) , we get
[tex]16x^2-(20+20)x+25=0\\\\(16x^2-20x)-(20x-25)=0\\\\4x(4x-5)-5(4x-5)=0\\\\(4x-5)(4x-5)=0[/tex]
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23
−
1/9
= ?????
I really need help please help me...
Answer: 22.8888888889 but rounded 22.9
Step-by-step explanation: This is so because when you turn 23 to ninths you get 207/9 - 1/9 then put into decimal form, 22.8888888889 or 2.9
Given: m<4 + m<7 = 180 degrees
Prove: c || d
1) m∠4 + m∠7 = 180° (given)
2) ∠4 is congruent to ∠6 (vertical angles)
3) m∠4 = m∠6 (definition of congruent angles)
4) m∠6 + m∠7 = 180° (substitution)
5) c is parallel to d (converse of same side interior angles theorem)
work out value please
Answer:
270
Step-by-step explanation:
(∛9)³ × (√30)²
9 × 30 = 270
I hope this helps!
Answer:
Answer:
270
Step-by-step explanation:
(∛9)³ × (√30)²
9 × 30 = 270
Step-by-step explanation:
A line passing through point (-6, 1) and has a slope of -3
Write an equation in Ax+By=C
Use integers A, B and C
Answer:
y=-3x-17
Step-by-step explanation:
y=mx+b (slope-intercept form) b=y-intercept= (0,?) m=slope
y=-3x+b substitute values
y+3x=b isolate b to find b
1+3(-6)=b substitute given ordered pair
-17=b
y=-3x-17
can someone help me really quick
Answer:
2 2/4 because i just know the answer
the dum of twice a number and 15
Use the properties of logarithms to evaluate each expression.
1/2 log₅15 - log₅√75
Using the properties of logarithm the value of the expression is [tex]\frac{1}{2}log_{5} 15 - log_{5} \sqrt{75} = -\frac{1}{2}[/tex]
According to the question the expression that we have been given is
= [tex]\frac{1}{2}log_{5} 15 - log_{5} \sqrt{75}[/tex]
Now solving it step by step using the properties of logarithm which are
[tex]log a^{m} = m*loga[/tex] , [tex]log \frac{x}{y} = logx - logy[/tex] and [tex]log_{a} a = 1[/tex]
As √75 is also equal to [tex](75)^{1/2}[/tex]. Thus equating in the equation we get
Therefore ,
[tex]= \frac{1}{2}log_{5} 15 - log_{5} 75^{\frac{1}{2} } \\= \frac{1}{2}log_{5} 15 - \frac{1}{2} log_{5}{75} \\[/tex]
As we can see that 1/2 is common in both the terms we will take out 1/2 common from both terms, by which we get
[tex]= \frac{1}{2} [log_{5} 15 - log_{5}{75} ] \\= \frac{1}{2} [log_{5} \frac{15}{75} ] \\\= \frac{1}{2} [log_{5} \frac{1}{5} ] \\= \frac{1}{2} [log_{5} 1 - log_{5}{5} ]\\= \frac{1}{2} [0 - 1]\\= -\frac{1}{2}[/tex]
Hence using the properties of logarithm the value of the expression is [tex]\frac{1}{2}log_{5} 15 - log_{5} \sqrt{75} = -\frac{1}{2}[/tex]
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Grapes are selling for $0.26 a pound. Ashley spent $3.77 on grapes. How many pounds of grapes did Ashley buy?
Write the equation of a line parallel to the line: y = − x − 1 that goes through the point (-2, -8).
The equation of the required line parallel to the given line is y = -x - 10.
What is slope ?Slope can be defined as the rate of change.
According to the given question we have to write an equation of a line parallel to the line y = - x - 1 that goes through the point (-2,-8).
We know that lines are parallel because of the same slope they have.
So, the required line also have a slope(m) = -1.
∴ The equation of the required line in slope intercept form can be written as y = mx + b.
Putting the value of given points (-2, -8) in (x,y) t evaluate y intercept b.
So, - 8 = (-1)(-2) + b.
- 8 = 2 + b.
b = -10.
∴The equation of the required line in slope intercept form is y = -x -10.
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Which of the following points lie on the line whose equation is y + 4= 3/5 ( x- 2)?
The point (x, y) = (7, - 1) lies on the line whose equation is y + 4 = (3 / 5) · (x - 2). (Correct choice: E)
What points do belong to a given linear equation?
In this problem we find five different points of the form (x, y), each of which has to be checked in the linear equation given in the statement. A point is a solution of the linear equation if and only an equality exists, that is, the reflexive property of equalities is guaranteed by evaluating the expression.
Now we proceed to check the expression for each case:
(x, y) = (1, - 5)
- 5 + 4 = (3 / 5) · (1 - 2)
- 1 = (3 / 5) · (- 1)
- 1 = - 3 / 5 (FALSE)
(x, y) = (- 8, - 12)
- 12 + 4 = (3 / 5) · (- 8 - 2)
- 8 = (3 / 5) · (- 10)
- 8 = - 30 / 5
- 8 = - 6 (FALSE)
(x, y) = (- 3, - 8)
- 8 + 4 = (3 / 5) · (- 3 - 2)
- 4 = (3 / 5) · (- 5)
- 4 = - 3 (FALSE)
(x, y) = (12, 10)
10 + 4 = (3 / 5) · (12 - 2)
14 = (3 / 5) · 10
14 = 30 / 5
14 = 6 (FALSE)
(x, y) = (7, - 1)
- 1 + 4 = (3 / 5) · (7 - 2)
3 = (3 / 5) · (5)
3 = 3 (TRUE)
The point (x, y) = (7, - 1) lies on the line whose equation is y + 4 = (3 / 5) · (x - 2).
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3 identical circles inside a rectangle each circle touches the other two circles and sides of a rectangle
the radius of each circle is 2mmworkout the exact area of the rectangle
give your answer in the form a√ 3+b
where a and b are integers
The area of the rectangle having three identical circles inside is calculated as: (16√3 + 32) mm².
What is the Area of a Rectangle?Area of rectangle = (length)(width)
The image of the three identical circles in the rectangle has been labelled as shown in the diagram attached below.
We need to find the measure of the length and width of the rectangle.
Radius = AB = BD = DF = FG = CD = HI = 2 mm
Length of the rectangle = AB + BD + DF + FG = 2 + 2 + 2 + 2
Length of the rectangle = 8 mm
Width of the rectangle = CD + DH + HI
CD = 2 mm
HI = 2 mm
Use the Pythagorean theorem to find the measure of DH
DH = √(FH² - DF²)
FH = 2 + 2 = 4 mm
DF = 2 mm
Substitute
DH = √(4² - 2²)
DH = √(16 - 4)
DH = √12 = 2√3 mm
Width of the rectangle = CD + DH + HI = 2 + 2√3 + 2
Width of the rectangle = 2√3 + 4
Area = (2√3 + 4)(8)
Area = (16√3 + 32) mm²
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A box of chocolates costs 9.49. Rita bought 4 boxes. How much did she spend?
Answer:
$37.96
Step-by-step explanation:
$9.49 x 4 = $37.96
What are the domain and points of discontinuity of the rational function? Are the points of discontinuity removable or non-removable? What are the x - and y -intercepts of the rational function?
c. y=x+1/x²+3 x+2}
The domain of given points are :
IR x ≠ -1 , -2
Points of discontinuity - x = -2 ( non removable / asymptote )
x = -1 ( removable / hole)
x - intercept = -1 , y - intercept = 1/2
What is rational functions ?Any function that can be expressed as a polynomial divided by a polynomial is said to be rational. The domain of a rational function is the set of all numbers except the zeros of the denominator since polynomials are defined everywhere. First example: f(x) = x/ (x - 3).
CALCULATIONy=x+1/x²+3 x+2
= x+1/x²+2x+x+2
= x+1/(x+2)(x+1)
The domain of given points are :
IR x ≠ -1,-2
Points of discontinuity - x = -2 ( non removable / asymptote)
x = -1 ( removable / hole)
x-intercept :
0 = x + 1
x = -1
y - intercept :
0+1 / (0+1)(0+2) = 1/2
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3. Every conditional has two parts. The part following if is the
Ohypothesis
O conclusion
O inverse
O converse
(1 point)
Every conditional has two parts they are hypothesis and conclusion.
What are hypothesis and conclusion ?The hypothesis is the first part of a conditional statement 'if' and conclusion is the last part of a conditional statement 'then'
According to the given statement every conditional has two parts a hypothesis and a conclusion.
Conditional starts with if and ends with then.It is used to express possible situations.
For example-: if the two angles are complementary then their sum is 90°.
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Sandy is training for a triathlon. Between running and bicycling, she covers a
distance of 200 miles every week. Her average speed on a bicycle ride is 20
mph. Her average speed running is 8 mph. If she spends 16 hours per week
training, how many hours does she spend on each sport?
Answer:
Step-by-step explanation:
Use natural logarithms to solve each equation.
ex/₄-8=6
39.16 approx. is the value of x in [tex]e^{\frac{x}{4} -8}[/tex] = 6 solved by using natural logarithm
What is a natural logarithm?A number's natural logarithm is its logarithm to the base of the transcendental and irrational number e, which is roughly equivalent to 2.718281828459.
Typically, the natural logarithm of x is denoted by the symbols ln x, loge x, or, if the base e is implicit, just log x. When adding parentheses for clarity, the values ln(x), loge(x), or log (x). In order to avoid ambiguity, this is notably done when the argument to the logarithm is not a single symbol.
The power to which e would need to be raised in order to equal x is the natural logarithm of x.
For instance, e2.0149... = 7.5, thus ln 7.5 equals 2.0149.
Since e1 = e, the natural logarithm of e itself, or ln e, is equal to 1, while the natural logarithm of 1 is 0, since e0 = 1.
We have been asked to find x in [tex]e^{\frac{x}{4} -8}[/tex] = 6 using natural logarithm
⇒ [tex]e^{\frac{x}{4} -8}[/tex] = 6
⇒ [tex]\frac{x}{4} - 8[/tex] = ㏑6
⇒ [tex]\frac{x}{4}[/tex] = ㏑6 + 8
⇒ x = ln(1296) + 32
= 39.16 approx.
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Correct questionUse natural logarithms to solve each equation.
[tex]e^{\frac{x}{4} -8}[/tex] = 6
A football team has a win to loss of 5:8. What is the ratio of losses to total games played
HELP ASAP I DONT WANT TO FAIL
Answer:
16.3p + (-10)
Step-by-step explanation:
The local gym holds two 45-minute workout sessions and four 30-minute sessions each week. Judy attended all of the sessions this week but left 5 minutes early during the 30-minute sessions and 10 minutes early during the 45-minute sessions. How many total minutes did Judy work out for the week?
Answer:
170 minutes
Step-by-step explanation:
So if there was two 45 min work outs in a week and she left those 10 mins early that was two 35 min work outs and then there was 4, 30min work outs and she left those 5 mins early so 4, 25min workouts so its 35+35+25+25+25+25.
(a +11)(11a +1)
Simplify
Answer:
11a^2 + 122a + 11
Step-by-step explanation:
First, multiply a by 11a, which gives you 11a^2. Then you multiply 11 to 11a, which gives you 122a, then last just multiply 11 to 1 and you get 11. Hope this helps.
Find all the real square roots of each number. 0.49
The real square root of the number 0.49 is 0.7
0.49 can also be presented as, 49* [tex]10^{-4}[/tex]
The square root of 49* [tex]10^{-2}[/tex]
= [tex]\sqrt{49}[/tex] * [tex]\sqrt{10} ^{-2}[/tex]
= 7 * [tex]10^{-2}[/tex]
=0.7
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the sum of a number and two thirds the number is the same as 4 less than twice the number
12
Step-by-step explanation:
n + (2/3)n = 2n - 4
(5/3)n = 2n - 4
(5/3)n - 2n = -4
(-1/3)n = -4
n = 12
The product of any integer and –1 is always
What inscribed polygon is being constructed? Explain how you know.
With an equilateral triangle, only two circles are formed.
In geometry, what is an inscribed polygon?An inscribed polygon is one whose vertices are circle points. "In" denotes "in" and "scribed" denotes "written." Connect the points in a straight line with segments.What kind of polygon is carved into the circle?
A cyclic polygon is one that is inscribed in a circle, and the circle is its circumscribed circle or circumcircle.So, according to the given figure, we know that an equilateral triangle and only two circles are formed.Therefore, with an equilateral triangle, only two circles are formed.
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