8. In the diagram below, angle CAE = 39 °. Find the following
:) AOC
b) OBA
Answers
Answer:
a) 78°
b) 39°
Step-by-step explanation:
In circle with center O, DE is tangent at point A and AC is chord (or secant if extended both sides).
Therefore by tangent secant theorem.
[tex] m\angle CAE = \frac{1}{2} \times m\widehat{(AC)} \\\\
\therefore 39\degree = \frac{1}{2} \times m\widehat{(AC)} \\\\
\therefore m\widehat{(AC)} = 39\degree\times 2\\
\red{\bold{\therefore m\widehat{(AC)} = 78\degree}}\\[/tex]
Since, measure of central angle of a circle is equal to the measure of its corresponding minor arc.
[tex] \therefore m\angle AOC = m\widehat{(AC)}\\
\huge \purple {\boxed {\therefore m\angle AOC = 78\degree}} \\[/tex]
Next, by inscribed angle theorem:
[tex] m\angle CBA = \frac{1}{2}\times m\widehat{(AC)}\\\\
\therefore m\angle CBA = \frac{1}{2}\times 78\degree \\\\
\therefore m\angle CBA =39\degree \\\\
\huge \orange{\boxed {\therefore m\angle OBA = 39\degree}}\\... (\because C-O-B) \\[/tex]
Related Questions
With reference to the figure, sin x =
Answers
Answer:
0.894
Step-by-step explanation:
Data provided in the question
BC length = 17.89 unit
DC length = 16 unit.
Now, we have to compute the angle y with the help of the cosine function;
Cosine defines the ratio between the right angle adjacent side and the hypotenuse
[tex]\cos = \frac{Adjacent side}{Hpotenuse}[/tex]
As per the triangle BDC;
Hypotenuse = BC =17.89 unit
And, the Adjacent side = 16 units
So;
[tex]\cos y =\frac{16}{17.89} =0.894354388[/tex]
[tex]y =\cos^{-1} (0.894354388) = 26.57^{\circ} (nearest\ to\ hundredths\ place)[/tex]
Now, determine the value of angle x
In right angle ΔABC;
As we know that
The three angles sum is 180 degrees
So,
[tex]\angle A + \angle B +\angle C =180^{\circ} ....(1)[/tex]
According to the given figure
[tex]\angle B=90^{\circ}, \angle A =x^{\circ}[/tex]
and
[tex]\angle C =y=26.57^{\circ}[/tex]
Now Substitute these in (1) for solving the angle x;
[tex]x^{\circ}+90^{\circ}+y^{\circ} =180^{\circ}[/tex]
or
[tex]x^{\circ}+90^{\circ}+26.57^{\circ} =180^{\circ}[/tex]
or
[tex]x^{\circ}+116.57^{\circ} =180^{\circ}[/tex]
[tex]x^{\circ}=180^{\circ} - 116.57^{\circ}=63.43^{\circ}[/tex]
Finally we have to determine the value of sin x;
Hence,
The value of [tex]\sin 63.43 =0.89438856[/tex]
or
= 0.894
Answer:
sin x = 0.894
Step-by-step explanation:
I hope you are refering to this figure:
please help meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
Answers
Answer:
2000 ft x 2= 4000 ft
So the answer is 4000 ft
What is the solution to (5m)² - (2n-3m)³ if m=-3 and n=5
Answers
Answer:
-6634
Step-by-step explanation:
all we have to do is plug in -3 everywhere m is and 5 where n is:
(5(-3))² - (2(5)-3(-3))³
(-15)² - (10+9)³
225 - 6859
-6634
WILL GIVE BRAINLIEST AND 30 POINTS! Multiply the matrix representing the vertices of the rectangle to transform the figure. What are the coordinates of the resulting figure?
Answers
Answer:
What are the coordinates of the resulting figure?
✔ (0, 0), (4, 0), (4, –4), (0, –2)
Step-by-step explanation:
its C on Edge
I just took this assignment and got it right
The coordinate of the given figure is, (0, 0), (4, 0), (4, –4), (0, –2).
We have to determine the coordinates of the resulting figure.
What is the meaning of the coordinate?A pair of numbers that describe the position of a point on a coordinate plane by using the horizontal and vertical distances from the two reference axes.it can be represented by (x,y) that is the x-value and y-value.
Therefore the value of x and y at point (0,0) is 0 and 0.
The value of x and y at point (0,2) is 0 and 2.
The value of x and y at point (4,4) is 4 and 4.
The value of x and y at point (4,0) is 4 and 0.
Therefore the coordinate of the given figure is,
(0, 0), (4, 0), (4, –4), (0, –2)
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10 tolas gold bought from American market at $ 553 per tola is sold in Nepal at 20% customs duty charge and 13% VAT. At what price should it be sold ?
Answers
Answer: $735.49
Step-by-step explanation:
Given, the price of 10 tolas gold bought from American market = $553
Custom duty charge = 20%
VAT = 13%
Custom duty charge = 20% of $553
= 0.20 x 553 [we divide a perecntage to convet it into decimal]
= $110.6
VAT = 13% of $553
= 0.13 x 553
= $71.89
Selling price = Original price +Custom duty charge + VAT
= $553+$110.6+ $71.89
= $735.49
Hence, it should be sold at $735.49 .
Optimize the equation P = 4x + 3y using the constraints x > 0, x < 4, y <
5. What is the maximum?
a. 13
b. 15
c. -3
d. 31
Answers
Answer:
Option D is correct
Step-by-step explanation:
With x < 4 and y < 5:
P = 4x + 3y < 4(4) + 3(5) = 16 + 15 = 31
=> Option D is correct
Given the equation P = 4x + 3y With constraints x > 0, x < 4 and y < 5:
Option D is correct that is 31.
What is a system of equations?A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.
Given the equation P = 4x + 3y
With constraints x > 0, x < 4 and y < 5:
The maximum value is
P = 4x + 3y < 4(4) + 3(5)
P = 16 + 15
P = 31
Hence, the Option D is correct.
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A discount of 16 % saved $38 on office supplies. whatw as the price of supplies before the discount ?
Answers
Answer:
$44.08
Step-by-step explanation:
Answer:
$237.5
Step-by-step explanation:
You will divide 38 by .16 to get the answer.
What is the smallest number that is divisible by 1,2,3,4,5,6,7,8,9 and 10? How do you know? (explain) hurry pls
Answers
Answer:
The smallest number that is divisible by 1,2,3,4,5,6,7,8,9 and 10 is 2,520.
Step-by-step explanation:
2520/1 = 2520
2520/2 = 1260
2520/3 = 840
2520/4 = 630
2520/5 = 504
2520/6 = 420
2520/7 = 360
2520/8 = 315
2520/9 = 280
2520/10 = 252
Because (2^3)(3^2)(5)(7) = 2520
if a(x) = 2x - 4 and b(x) = x + 2, which of the following expressions produces a quadratic function?
(ab))
O (a - b)^)
O (a + b)(x)
Answers
Answer:
[tex](ab)(x)[/tex]
Step-by-step explanation:
Data provided in the question
a(x) = 2x - 4
b(x) = x + 2
Now we go through each options
First option
[tex](ab)(x)=(2x-4)(x+2)[/tex]
[tex]=2(x-2)(x+2)[/tex]
[tex]=2(x^2-4)[/tex]
[tex]=2x^2-8[/tex]
Second option
[tex]\dfrac{a}{b}(x)=\dfrac{2x-4}{x+2}[/tex]
Third option
[tex](a-b)(x)=(2x-4)-(x+2)[/tex]
[tex]=2x-4-x-2[/tex]
= x - 6
Fourth option
[tex](a+b)(x)=(2x-4)+(x+2)[/tex]
[tex]=2x-4+x+2[/tex]
= 3x - 2
As we can see from the above options only option A is correct i.e it only produced a quadric function
Plz help me y/12-5=11
Answers
Answer:
192
Step-by-step explanation:
y/12-5=11
y/12=11+5
y/12=16
y=16x12
y=192
Answer:
y = 192
Step-by-step explanation:
1st add 5 to both sides 12 to get 7: [tex]\frac{y}{11} =16[/tex]
then multiple both sides by 11 to isolate the y : [tex]y=192[/tex]
(11 times 16 equals 192)
Write the slope-intercept form of the equation that passes through the point (0, 1) and is parallel to the line y = 3x - 5
Answers
Answer: y = 3x + 1
Step-by-step explanation:
In the equation y=mx+b (slope - intercept form), m represents the slope and b represents the y - intercept of the equation. We can use this to answer the problem.
Because the problem specifies here that the equation we are trying to solve for is parallel to y= 3x - 5, we can assume that its slope is 3 (the same as the line it is parallel to - this is so because of the definition of parallel lines).
m = 3
And finally, we know that the y-intercept will be in the form (0, b) - which is exactly what the given point is in. Substitute the value in, and we get:
b = 1
Now put these two values into one equation.
y = mx + b
y = (3)x + (1)
y = 3x + 1
Given the function f(x)=-3x^2+4x+6 find f(2) and f(3)
Answers
Answer:
f(2)= 2, f(3)= -9
Step-by-step explanation:
To find f(2) o f(3), you simply plug the respective number into the function, substituting it for x:
f(2)= -3(2)^2 + 4(2) + 6
f(2)= -12 + 8 + 6
f(2)= 2
f(3)= -3(3)^2 + 4(3) + 6
f(3)= -27 + 12 + 6
f(3)= -9
WILL AWARD BRAINLIEST AND GIVE 30 POINTS! ANY HELP IS APPRECIATED! I PREFER A STEP BY STEP EXPLANATION!
Answers
Answer:
[tex]\frac{12}{253}[/tex]
Step-by-step explanation:
So I would start by multiplying all the numbers on
the denominator first ----->
11 x 14 = 154
~~~
14 x 17 = 238
~~~ *BASICALLY: FIND THE COMMON DENOMINATOR*
17 x 20 = 340 (this will be how u add everything at the end)
~~~
20 x 23 = 460
Now your goal is to get all of these numbers to be the same as the denominator so you can add them together at the end (get a common denominator)
**(remember when multipling the top and the bottom numbers, whatever you do to the bottom you must do to the top)**
3 3 3 3
--------- (x ?) + --------- (x ?) + --------- (x ?) + --------- =
154 238 340 460
***sorry i dont hav time to finnish but i hope this helped at least a little****
Hey guys please help me solve and find angle w
Answers
Answer:
Step-by-step explanation:
in a parellelogram,Opposite angles of a parallelogram are congruent
110=11x+11
110-11=11x
99=11x
99/11=x
9=x
<w= 110 °
Subtract.
5x2 - 5+1
(2x2 +9x-6)
-_________
A. 3x2 - 4x+7
B. 3x2 - 14x+7
c. 3x2 + 4x - 5
D. 3x2 + 14x-5
Answers
Answer:
The answer is: [tex]3x^2-14x+7[/tex]
which agrees with answer B) among your list of possible options.
Step-by-step explanation:
I think you forgot an "x" in the first trinomial, so, let's try that:
[tex](5x^2-5x+1)-(2x^2+9x-6)=\\= 5x^2-5x+1-2x^2-9x+6=\\=3x^2-14x+7[/tex]
a store bought a vacuum cleaner for $120. the overhead is 5% of the cost. the store wants to make a profit of 10% over the cost plus overhead. find the selling price of the cleaner.
Answers
Answer:
The selling price of the cleaner is:
$138.6Step-by-step explanation:
First, we have the base of the value that is $120, now we know that the overhead is 5%, so we must calculate this value in dollars, the 5% of $120 is:
$120 * 5% = $6This value you must add to the base ($120), so the cost with the overhead is $126. How the store wants to make a profit of 10%, you must calculate this 10% of the total cost obtained ($126):
$126 * 10% = $12.6And you must add this value to obtain the final price in the store:
$126 + $12.6 = $138.6Origami is the Japanese art of paper folding. The diagram below represents an unfolded paper kabuto, a samurai warriors helmet. From the kabuto below, which of the following are pairs of congruent angles? Check all that apply.
Answers
Answer:
A,C,&D
Step-by-step explanation:any funny bur cute romance anime recommendations?
When you need to convert from one system of measurement to another, you should convert to the
A. metric system.
B. system that will have the highest number.
C. system that will have the smallest number
D. system used on the medication label.
Answers
To convert from one unit to another within the metric system usually means moving a decimal point. If you can remember what the prefixes mean, you can convert within the metric system relatively easily by simply multiplying or dividing the number by the value of the prefix.
Which division problem is represented in the picture?
Answers
Answer:
B. 3 1/3 (3/2)
Step-by-step explanation:
10/3 = 3 1/3
3 1/3 / 2/3 is basically equal to 3 1/3 * 3/2 as you have to use keep change flip for dividing fractions.
What fraction of the boys are red headed
Answers
Answer:
19/64
Step-by-step explanation:
number of boys:
11+21+13+19=64red haired boys:
19The fraction:
19/64Answer:
19/64
Step-by-step explanation:
number of boys: 11+21+13+19=64
red haired boys: 19
The fraction: 19/64
Find the equation of the line passing
through the points (3,-2) and (4, 6).
y = [? ]x + [ ]
Answers
Answer:
y = 8x - 26
Step-by-step explanation:
Since we already have the ending equation in slope intercept form, all we need to do is fill in the blanks. We do that by putting it in point slope form which is [tex]y-y_{1}=m(x-x_{1})[/tex]
(You can plug either point in and get the same result but I'm going to use the first one)
[tex]y-(-2)=8(x-3)[/tex]
Distribute the [tex]m(x-x_{3})[/tex]
[tex]y-(-2)=8x-24[/tex]
Isolate the [tex]y[/tex]
[tex]y-(-2)=y+2[/tex]
[tex]y+2(-2)=8x-24(-2)[/tex]
[tex]y=8x-26[/tex]
And that's your answer!
what is the answer to...[tex]-\frac{2}{3} (4x-6)+\frac{1}{3}(x-5)[/tex]
Answers
Distribute
=(-2/3)(4x)+(-2/3)(-6)+(1/3)(x)+(1/3)(-5)
=-8/3x+4+1/3x+-5/3
Combine Like Terms
=(-8/3x+1/3x)+(4+-5/3)
=-7/3x+7/3
Lines L and M are parallel.
4
3
5
L
2
1/6
38° 7.
- M
Find : m24
Enter the number that
belongs in the green box.
?]
Enter
Answers
Answer:
m∠4 = 38°
Step-by-step explanation:
The angle that measures 38° and ∠6 are vertical angles, which means that they are congruent, therefore m∠6 = 38°
∠6 and ∠4 are corresponding angles, which means that they are congruent, therefore m∠4 = m∠6 = 38°
What is the volume of the rectangular prism below/described? (Don't forget to label your answer!)

Length= 4 1/2 in. Width= 5 in. Height= 3 3/4 in.
The volume of the prism is ___.
(hint: in2 is inches squared; in3 is inches cubed)
Answers
Answer:
Step-by-step explanation:
Volume = Length times width times height.
Here,
Volume = (4.5 in)(5 in)(3.75 in), which, when evaluated by calculator, comes out to 84.375 cubic inches.
This is equivalent to 84 3/8 cubic inches.
Answer:
[tex]84\frac{3}{8}in^3[/tex]
Step-by-step explanation:
V = L * W * H
V = 4 1/2 * 5 * 3 3/4
V = 9/2 * 5/1 * 15/4
V = 675/8
V = 84 3/8
determine the horizontal asymptote for the rational function.
Answers
Answer:
y = 1
Step-by-step explanation:
The horizontal asymptote is the line, horizontally, where the graph doesn't cross. In this case, the graph approaches y = 1, but never touches 1, so your answer is y = 1.
Mia borrows $320 to buy books for her college classes. The simple interest is 5% for
one year. Mia wants to know the total amount she will pay back.
Answers
Answer:
$336
Step-by-step explanation:
Find 5% of 320
320(0.05) = 16
320 + 16 = 336
The total will be $336
of the methods for solving systems of equations, which is the least accurate and may only give an approximate answer?
a. Graphing
b. Substitution
c. Elimination
d. None, they are all exact.
Answers
Hope this helped
Graphing is the least accurate method for solving systems of equations, and it may only give an approximate answer. Hence, option A is the right choice.
What is the system of equations?A system of equations is made up of two or more equations that are solved at the same time.
What are the different ways of solving systems of equations?There are three ways to solve a system of equations:
Graphing: All equations are graphed and the point of intersections are the solutions for the system of equations.Substitution: One variable is isolated in one equation, and its value is substituted in the other equation to solve the system of equations.Elimination: Operations are done on all equations to eliminate one variable and then solve for the system of equations.How to solve the question?In the question, we are asked which method for solving systems of equations is the least accurate and may only give an approximate answer.
We have discussed all methods above.
Of these methods, when solving manually, as the degree of the equation gets bigger and bigger, the graphing of equations will become difficult, and thus the graphing method will be the least accurate.
Thus, graphing is the least accurate method for solving systems of equations, and it may only give an approximate answer. Hence, option A is the right choice.
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express 3m24cm in kilometers,leaving your answer in standard form
Answers
Answer:
0.00324 kilometres
Step-by-step explanation:
Remember:
100 centimeters = 1 meter
1000 meters = 1 kilometer
So first, let's add together the meters and centimeters. To do that, we have to convert the meters to centimeters. That would become 300 centimeters, then you add the 24 centimeters to get 324 centimeters. Then, you convert that to kilometers. You can use a calculator for this, but I'll show you how to do this without a calculator. Since 100 centimeters is one meter, and 1000 meters equals to one kilometer, there would be 5 spaces from 324 to our answer, so you move the invisible decimal point 5 spaces to the left, and you get your answer, which is 0.00324 kilometres!
Answer:
0.00324 km is the answer
When Reshard was born, his uncle bought him a $200 savings bond. When Reshard turns 20 years old, the bond will have earned 130% interest. How much will the bond be worth when Reshard turns 20?
Answers
Answer: 260
Step-by-step explanation: When we 200 times 130% we will get 260.
What is the area of the obtuse triangle given below?
Answers
Answer:
9 sq. units
Step-by-step explanation:
We khow that the area of a triangle is Area= (base*height)/2 so A=(9*2)/2=18/2=9Answer:
C
Step-by-step explanation: