In a circle, the perpendicular bisector of a chord passes through the center of the circle. Since the chord is 10 cm from the center of the circle, we can draw the perpendicular bisector of the chord that passes through the center of the circle, as shown in the diagram below:
O
/ \
/ \
/ \
/ \
/ \
/ \
A-----------------B
10 cm
Since the perpendicular bisector passes through the center of the circle, we can draw a radius of length 12 cm that intersects the perpendicular bisector at a right angle. This creates a right triangle OAB, where OA = OB = 12 cm and AB = 10 cm/2 = 5 cm.
Using the Pythagorean theorem, we can find the length of the chord:
AB^2 + OB^2 = OA^2
5^2 + 12^2 = 144 + 25
169 = 169
Therefore, the length of the chord is the square root of 169, which is 13 cm. So, the length of the chord is 13 cm.
The polynomial below is a perfect square trinomial of the form A2 - 2AB+ B2.
9x2-12x+4
A. True
B. False
Answer:
True
Step-by-step explanation:
A polynomial is a combination of terms separated by + or − signs. A polynomial does not contain variables raised to negative or fractional exponents, variables in the denominator or under a radical, or any special features such as trigonometric functions, or logarithms.
Answer:
True
Step-by-step explanation:
Factoring is adding and multiplying, so basically you add -12 and 9 to get 4, at least thats how I got it. Hope this helps!
Simplify: (x2+6x+8) + (-4x2+11x-9)
Answer:
-3x^2+17x-1
Step-by-step explanation:
What’s the answer to the questions below? Plsss help
According to the information we can infer that the parallel line would be AD or CF. Additionally, the perpendicular lines would be CB or FE.
How to identify parallel lines?To identify the parallel lines we must look at the figure and find the lines that have the same direction as the line BE and that would never intersect with the segment BE, according to the above, we can infer that the parallel lines would be:
ADCFOn the other hand, the lines perpendicular to CF would be CB or FE because they make 90° angles with segment CF. Additionally, the face that would be parallel to ABC is DEF.
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The vertices of quadrilateral MNPQ are M(4, 2) , N(6, - 2) , P(10, 0) , and Q(8, 4) Which best describes quadrilateral MNPQ?
Answer:
D. square
Step-by-step explanation:
The reason why it going to be square is because, of the picture below:
It's perfectly the same on all sides so it can't be a rectangle and it is not a diamond shape for rhombus, it also can't be a parallelogram because, parallelograms don't have the same shape as a square as seen below. Therefore, your only possible answer would be D. square
NO LINKS OR ELSE YOU'LL BE REPORTED! Only answer if you're very good at Math.
Which expression is equivalent to (1/√y)^-1/5?
A: 5√y^2
B: 1/√y^5
C: 10√y
D: 1/10√y
Answer:
\(=\sqrt[10]{y}\)
So option c is the correct answer
Step-by-step explanation:
\(\left(\frac{1}{\sqrt{y}}\right)^{\frac{-1}{5}}\\\mathrm{Apply\:exponent\:rule}:\quad \left(\frac{a}{b}\right)^c=\frac{a^c}{b^c}\\\left(\frac{1}{\sqrt{y}}\right)^{\frac{-1}{5}}=\frac{1^{\frac{-1}{5}}}{\left(\sqrt{y}\right)^{\frac{-1}{5}}}\\=\frac{1^{\frac{-1}{5}}}{\left(\sqrt{y}\right)^{\frac{-1}{5}}}\\\mathrm{Apply\:rule}\:1^a=1\\1^{\frac{-1}{5}}=1\\=\frac{1}{\left(\sqrt{y}\right)^{\frac{-1}{5}}}\\\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{-a}{b}=-\frac{a}{b}\)
\(=\frac{1}{\left(\sqrt{y}\right)^{-\frac{1}{5}}}\\\left(\sqrt{y}\right)^{-\frac{1}{5}}=\frac{1}{\sqrt[10]{y}}\\=\frac{1}{\frac{1}{\sqrt[10]{y}}}\\\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{1}{\frac{b}{c}}=\frac{c}{b}\\=\frac{\sqrt[10]{y}}{1}\\\mathrm{Apply\:rule}\:\frac{a}{1}=a\\=\sqrt[10]{y}\)
Please Help. Lateena solved the equation below. Is her solution correct? Explain why or why not?
I've attached the picture for the problem.
Answer:
Not correct
Step-by-step explanation:
Given:
x² - 6x - 7 = 0
The following equation can be solved correctly by factoring Thus,
x² - x + 7x - 7 = 0
x(x - 1) +7(x - 1) = 0
(x - 1)(x + 7) = 0
(x - 1) = 0
x - 1 = 0
x - 1 + 1 = 0 + 1
x = 1
Or
(x + 7) = 0
x + 7 = 0
x + 7 - 7 = 0 - 7
x = -7
Therefore, the solution would be x = 1 or x = -7
Lateena solution is therefore NOT CORRECT because she used a wrong method.
The following table represents the highest educational attainment of all adult residents in a certain town. If a resident who is 30-49 years old is chosen at random, what is the probability that they have completed a master's degree? Round your answer to the nearest thousandth.
Answer:
The required Probability =0.433
Step-by-step explanation:
number of residents who has master degree =2078
number of residents who has master degree and age group 30-49years= 455+ 445=900
900/2078
=450/1039
=0.43310
please helppp!!! thank you!
The number line that shows the solution to the inequality is given as follows:
First number line.
How to solve the inequality?The inequality in the context of this problem is defined as follows:
-6x + 5 >= 17
-6x >= 12.
Due to the negative sign of the leading coefficient, we should change the sign of all terms, including the sign, as follows:
6x <= -12.
Then the solution is given as follows:
x <= -2.
Which is composed by the numbers to the left of the closed interval at x = -2, hence the first number line gives the solution to the inequality.
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The number line that shows the solution to the inequality is: C. graph C.
What is an inequality?In Mathematics and Geometry, an inequality refers to a mathematical relation that is typically used for comparing two (2) or more numerical data and variables in an algebraic equation based on any of the inequality symbols;
Greater than (>).Less than (<).Greater than or equal to (≥).Less than or equal to (≤).Based on the information provided above, we have the following equation (inequality);
-6x + 5 ≥ 17
By subtracting 5 from both sides of the equation (inequality), we have;
-6x + 5 - 5 ≥ 17 - 5
-6x ≥ 12
x ≤ 12/6
x ≤ 2 (it would be shaded to the left with a closed circle at 2).
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Given that the coefficient of x⁵ in the expansion of (1+kx)⁵ is -672 find the value of k
The value of k that satisfies the given condition is approximately 0.4041.
In the expansion of (1+kx)⁵, the coefficient of x⁵ is given by the term:
C(5,k) * (kx)⁵ = k⁵ * C(5,k) * x⁵
where C(5,k) is the binomial coefficient or the number of ways to choose 5 items out of k.
So, we have the equation:
k⁵ * C(5,k) = -672
We can use a table of binomial coefficients to find C(5,k) for different values of k, but this can be time-consuming. Alternatively, we can use the fact that C(5,k) = C(5,5-k) and rewrite the equation as:
k⁵ * C(5,5-k) = -672
Expanding C(5,5-k), we get:
k⁵ * C(5,5-k) = k⁵ * C(5,k) = -672
Now, we can use trial and error to solve for k. Using this method, we can find that k = -4 or k ≈ 0.4041. However, since k must be positive (since it appears as a factor in the expansion), the only valid solution is k ≈ 0.4041.
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the sum of nine consecutive positive integers is 99. what is the largest of these integers
Answer:
I believe it is 200. Forgive me if its wrong-
three sides of triangle is x cm y cm z cm its perimeter and semi perimeter
Answer:
Step-by-step explanation:
Perimeter:
\(P=(x+y+z) \ cm\)
Semi-perimeter:
\(SP=\frac{1}{2} (x+y+z) \ cm\)
7-3x=x-4(2+x) please help with work
Answer:
7-3x=x-4(2+x)
7-3x=x-8-4x
7-3x-x=-8-4x
7-4x=-8-4x
-4x+4x=-8-7
0 =-15
=-15/0
=0
Find the distance between point P and line L
The distance between point P and line L is 16/9√(13).
To find the distance between point P and line L, we can use the formula for the distance between a point and a line in two-dimensional space. The formula is as follows:
Let P = (x1, y1) be the point and L be the line ax + by + c = 0. Then the distance between P and L is:
|ax1 + by1 + c|/√(a² + b²)
To find a, b, and c for the given line, we need to put it in slope-intercept form y = mx + b by solving for y.
2x - 3y = 12=> 2x - 12 = 3y=> (2/3)x - 4 = y
The slope of the line, m, is the coefficient of x, which is 2/3. Therefore, the line is:
y = (2/3)x - 4The values of a, b, and c are: a = 2/3b = -1c = -4
Now we can substitute the coordinates of P and the values of a, b, and c into the formula for the distance between a point and a line.
Let P = (3, 5).|a(3) + b(5) + c|/√(a² + b²)= |(2/3)(3) - 1(5) - 4|/√[(2/3)² + (-1)²]= |-4/3 - 4|/√(4/9 + 1)= 16/9√(13).
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how do I find the correct picture that goes into the right equation?
we know that
the equation of the circle in center radius form is equal to
(x-h)^2+(y-k)^2=r^2
where
(h,k) is the center and r is the radius
so
Verify each circle
Part 1
purple circle
The first circle has a radius of 6 units
r=6 units
center (2,-1)
the equation is
(x-2)^2+(y+1)^2=6^2
(x-2)^2+(y+1)^2=36Part 2
red circle
r=3 units
center (-1,-3)
so
(x+1)^2+(y+3)^2=3^2
(x+1)^2+(y+3)^2=9Part 3
blue circle
r=3 units
center (1,3)
so
(x-1)^2+(y-3)^2=3^2
(x-1)^2+(y-3)^2=9Part 4
green circle
r=2 units
center(2,-3)
so
(x-2)^2+(y+3)^2=2^2
(x-2)^2+(y+3)^2=4Each of the following statements is an attempt to show that a given series is convergent or divergent using the Comparison Test (NOT the Limit Comparison Test). For each statement, enter Correct if the argument is valid, or enter Incorrect if any part of the argument is flawed. Note: if the conclusion is true but the argument that led to it was wrong, you must enter Incorrect.
1. For all n>1, sin2(n)n2<1n2, and the series ∑1n2 converges, so by the Comparison Test, the series ∑sin2(n)n2 converges.
2. For all n>1, arctan(n)n3<π2n3, and the series π2∑1n3 converges, so by the Comparison Test, the series ∑arctan(n)n3 converges.
3. For all n>2, 1n2−5<1n2, and the series ∑1n2 converges, so by the Comparison Test, the series ∑1n2−5 converges.
4. For all n>2, n+1−−−−−√n>1n, and the series ∑1n diverges, so by the Comparison Test, the series ∑n+1−−−−−√n diverges.
5. For all n>2, nn3−2<2n2, and the series 2∑1n2 converges, so by the Comparison Test, the series ∑nn3−2 converges.
6. For all n>1, n2−n3<1n2, and the series ∑1n2 converges, so by the Comparison Test, the series ∑n2−n3
Prove the following.
statement reason
AB = BC, D is midpoint AC given
DB = BD common side to triangles ADB and CDB
Solve the compound inequality -8≤x+4<5
Answer:
-12≤x<1
Step-by-step explanation:minus both side by 4
Suppose that a scarf company estimates that its monthly cost is
C(a)=500x2 + 300 and its monthly revenue is
R(x) = -0.523 +6002-200+300, where x is in thousands of
scarves sold. The profit is the difference between the revenue and the cost.
What is the profit function, P(x)?
The profit function is P(x) = -500.523x^2 + 600x - 200.
To find the profit function, P(x), we need to subtract the cost function, C(a), from the revenue function, R(x).
Given:
Cost function: C(a) = 500x^2 + 300
Revenue function: R(x) = -0.523x^2 + 600x - 200 + 300
Profit function, P(x), is obtained by subtracting the cost function from the revenue function:
P(x) = R(x) - C(a)
P(x) = (-0.523x^2 + 600x - 200 + 300) - (500x^2 + 300)
Simplifying the expression:
P(x) = -0.523x^2 + 600x - 200 + 300 - 500x^2 - 300
P(x) = -500x^2 - 0.523x^2 + 600x + 300 - 200 - 300
P(x) = -500x^2 - 0.523x^2 + 600x - 200
Combining like terms:
P(x) = (-500 - 0.523)x^2 + 600x - 200
Simplifying further:
P(x) = -500.523x^2 + 600x - 200
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A patient consumes 2,000 calories of which 1200 calories were from carbohydrates. What percent of calories were from carbohydrates? Round the answer to the nearest integer.
Answer:
60%
Step-by-step explanation:
1200/2000=.6 or 60%
60%of calories were from carbohydrates.
What is percentage?a relative value that represents one tenth of any amount. One percent (symbolized as 1%) is equal to 100 parts; hence, 100 percent denotes the complete amount, and 200 percent designates double the amount specified. percentage. Percentile in mathematics is a related topic.
Given
1200/2000=.6 or 60%
Hence, 60%of calories were from carbohydrates.
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Someone help it would be greatly appreciated
Answer:
i think the correct answer is D
have a nice day! (^o^)
Evaluate the following.
|4-7|=
|4|-7=
Answer:
|4 - 7| = 3
|4| - 7 = -3
Step-by-step explanation:
Absolute values are just the distance from zero. If a number is negative, then it becomes positive, and if a number is positive it stays positive, since distance is positive.
We first evaluate the stuff inside the absolute value. So |4 - 7| = |-3| = 3
For |4| - 7, we already have one value in the absolute value.... which is 4 and the absolute value of that is 4, so we get 4 - 7 = -3
Answer:
3 -3Step-by-step explanation:
1) Value of |4 - 7| is?
→ |4 - 7|
→ |-3| = 3
Thus, the answer is 3.
2) Value of |4| - 7 is?
→ |4| - 7
→ 4 - 7 = -3
Thus, the answer is -3.
What is the area of the segment?
Answer:
28.54 ft²
Step-by-step explanation:
Area of segment = \( (\frac{\theta * \pi}{360} - \frac{sin(\theta)}{2}) * r^2 \)
Where,
\( \theta = 90 \)
r = 10 ft
Plug in the values
\( (\frac{90 * \pi}{360} - \frac{sin(90)}{2}) * 10^2 \)
\( (0.7854 - 0.5) * 100 \)
\( (0.2854) * 100 \)
= 28.54 ft²
Change this percent to a fraction
125%
Answer: 1\(\frac{1}{4}\)
Step-by-step explanation:
Divide using long division. The whole number portion will be the number of times the denominator of the original fraction divides evenly into the numerator of the original fraction, and the fraction portion of the mixed number will be the remainder of the original fraction division over the denominator of the original fraction.
Please help me find the equation xx
9514 1404 393
Answer:
(2x-10) +x +(x+10) = 180x = 45(2x-10)° = 80°(x+10)° = 55°x° = 45°Step-by-step explanation:
The equation is an expression of the fact that the sum of the angles in a triangle is 180°.
(2x -10)° +x° +(x +10)° = 180°
For the purposes of the answer box, I'd leave off the degree symbol:
(2x -10) +x +(x +10) = 180
__
This simplifies to ...
4x = 180
x = 45
Then the angles (CW from top) are ...
(2·45 -10) = 80°
(45 +10)° = 55°
(45)° = 45°
The value of your father’s car when bought was $30,000. If it loses 10% of its value every year, how long until the vehicle is only worth $20,000?
Answer:
6.7
Step-by-step explanation:
10% of 30000
10/100 x 30000
0.10 x 30000
=3000
In order to find how long you have to divide 20k with 3k
20000/3000 = 6.66666667
Round it up and you get 6.7
Help a girl out
Given: ray AC is parallel to ray DE, measure angle FED= measure angle GCA= 45°
Prove: ray FE is parallel to ray GC
We have proved that the ray FE is parallel to the ray GC.
What is meant by parallel lines?
In geometry, parallel lines are coplanar straight lines that do not intersect at any point. Parallel planes are planes in the same three-dimensional space that never meet. Parallel curves are curves that do not touch each other or intersect and keep a fixed minimum distance.
Angle DEF intersects at B
which results in angle DEF corresponding to the angle ACG.
As DEF = 45 so angle ACG = 45
So by the above discussion, we can say that the ray FE is parallel to the ray GC.
Hence, we have proved that the ray FE is parallel to the ray GC.
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given h(x)=2x^2-7x+4, find h(-7)
The output value of h(-7) in the function h(x) = 2x² - 7x + 4 is 151.
What is the output value of h(-7) in the given function?A function is simply a relationship that maps one input to one output.
Given the function in the question
h(x) = 2x² - 7x + 4,
Find h(-7)
To find h(-7), we substitute -7 for x in the equation of h(x) and simplify:
h(x) = 2x² - 7x + 4
Plug in x = -7
h(-7) = 2(-7)² - 7(-7) + 4
h(-7) = 2(49) + 49 + 4
h(-7) = 98 + 49 + 4
h(-7) = 151
Therefore,the output value of h(-7) is equal to 151.
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Find the area of the shaded regions. Give your answers as a completely simplified exact value in terms of pi (no approximations)
a display at an aquarium has sea stars to wolf eels in a ratio 4 : 5. It also has 5/8 as many rockfish as sea stars. there are 40 more wolf eels than rock fish. How many sea stars are there?
The number of sea stars is 64.
What is a ratio?
Comparing two amounts of the same units and determining the ratio tells us how much of one quantity is in the other.
In general, a: b, which can be interpreted as "a is to b," is used to denote a ratio between two quantities, let's say "a" and "b."
This ratio is expressed in fraction form as a/b. We utilize the same method for further simplifying a ratio as we use for further simplifying a fraction.
According to the question,
Ratio of sea stars to wolf eels = 4:5
Number of rock fish= 5/8 (Number of sea stars)
Number of wolf eels - Number of rock fish = 40
Using the given information, we get,
Number of sea stars = 8/5 (Number of rock fish)
On simplification,
Number of wolf eels = 80
So, number of sea stars = (4/5)*80
= 64
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I need help with this question I will post it as a photo, please help.
To be able to determine the answer to this question, we must simplify each choice and see whether they end up with 18x - 6.
We get,
A.) 16.4x - 6 + 1.6x
\(16.4x-6+1.6x\)\(18x-6\)B.) 2(9x - 3)
\(2\mleft(9x-3\mright)\)\((2_{}\mleft(9x)+(2)(-3\mright)\)\(18x\text{ - 6}\)C.) 3(9x - 2)
\(3\mleft(9x-2\mright)\)\((3)\mleft(9x)+(3)(-2\mright)\)\(27x\text{ - 6}\)D.) 12x - 6 - 6x
\(12x-6-6x\)\(6x-6\)E.) 6(3x - 1)
\(6\mleft(3x-1\mright)\)\((6)\mleft(3x)+(6)(-1\mright)\)\(18x\text{ - 6}\)Therefore, the answer is A, B and E