Answer:
x = 4 + √ 6 , 4 − √ 6 hope this is correct-
An experiment consists of randomly selecting a marble from a bag, not replacing it, and then selecting another marble. The bag contains 3 yellow marbles and 2 white marbles. What is the probability of selecting a white marble and then a yellow marble?
Answer:
The bag contains 4 blue marbles, 3 green marbles, 7 red marbles, and 1 yellow marble. What is the probability of selecting a red marble and then a blue marble? Question 3 ... 4 blue marbles+ 3 green marbles+ 7 red marbles+ 1 yellow marble= 15 ... P(red,blue0 = 7/15 * 2/7 = 2/15 =.13333333 = 13.33%.
Step-by-step explanation:
Answer:
There are 14 total marbles. The probability of drawing a yellow marble on the first draw is 3/14. Given replacement, the probability on the second draw is the same as on the first draw, so the probability of a black marble on the second draw is 6/14. The probability of drawing first a yellow marble then a black marble is 3/14 * 6/14 = 18/196.
Angle ABD is 52°. State the size of angle DEB, giving a reason for your answer.
Answer:
∠ DEB = 52°
Step-by-step explanation:
The angle between a tangent and a chord is equal to the angle in the alternate segment, that is
∠ DEB = ∠ ABD = 52°
The short answer is that you use the tangent-chord theorem. A more lengthy answer is given below.
=================================================
Explanation:
Refer to the diagram below.
I'm going to move point E so that segment EB becomes a diameter of the circle (it goes through the center point F). Points A,B,C,D will stay in place. The red points and red segments show the changes.
In this slightly redrawn diagram, triangle EDB is a right triangle where angle EDB is 90 degrees. This is due to Thales Theorem, which is a special case of the inscribed angle theorem.
Also, the new segment EB is perpendicular to segment AC because the diameter touching the point of tangency is perpendicular to the tangent line. So angle EBA is 90 degrees.
Since points A, D and B didn't move, this means angle ADB is still 52 degrees. This makes the new angle EBD equal to 90-52 = 38 degrees.
Despite the fact that angle E has moved, it has not effected the size of angle DEB. This angle is the same as its original because we're still subtending the same minor arc DB, and that arc hasn't changed size (since segment DB hasn't changed). So that's why it's valid to use the same x for the old angle DEB in black and the new angle DEB in red. They're the same angle.
-------------
Focus on triangle EBD. We have the following interior angles
B = 38D = 90E = xFor any triangle, the three interior angles must add to 180
B+D+E = 180
38+90+x = 180
128+x = 180
x = 180-128
x = 52
Angle DEB is 52 degrees
It's not a coincidence that we end up with the same angle as shown in the original diagram. The tangent-chord theorem says that the angle between a chord and tangent (as shown in the diagram) is exactly equal to the inscribed angle that subtends the arc formed by the chord. Arc DB is formed by chord DB.
In short, the tangent-chord theorem says that inscribed angle DEB and angle ABD are the same measure (both are 52 degrees).
This demonstration I've shown is one way to prove the tangent-chord theorem. Though a more rigorous proof would involve another variable.
Sixty-four is the product of eight and the sum of a number and six.
Answer:
64 is the sum of the numbers
58 + 6 = 64
PLEASE MARK ME AS BRAINLIEST
Find the value of X ?
Answer:
x = 19
Step-by-step explanation:
(10x - 23) and (7x + 34) are vertically opposite angles and congruent, so
10x - 23 = 7x + 34 (subtract 7x from both sides )
3x - 23 = 34 ( add 23 to both sides )
3x = 57 ( divide both sides by 3 )
x = 19
arm-Up
Active
Identifying the System of Measurement
Check
Sort the units of measure into the appropriate system.
Customary System
Metric System
miles
ounces
deciliters
kilometers
centigrams
cups
customary system; miles, cups, ounces
metric system; deciliters, kilometers, centigrams
Answer:
just here to say the guy above me is correct
Step-by-step explanation:
did it on edge 2021 :D
FIND THE LENGTH OF SIDE “DE”. GIVING BRAINLIEST
It’s kinda easy but I wanna make sure it’s right pls help if you can
Answer:
a. 9/10
Step-by-step explanation:
hopes this helps
Unit 4 Homework 2 Gina Wilson all things algebra,
Pls help!
Answer:
1. m∠1 = 48°
2. m∠1 = 129°
3. m∠1 = 37°
4. m∠1 = 88°
m∠2 = 42°
m∠3 = 113°
5. m∠1 = 72°
m∠2 = 35°
m∠3 = 24°
6. m∠1 = 128°
m∠2 = 52°
m∠3 = 47°
m∠4 = 133°
m∠5 = 81°
7. m∠1 = 41°
m∠2 = 85°
m∠3 = 95°
m∠4 = 85°
m∠5 = 36°
m∠6 = 49°
m∠7 = 106°
8. x = 12°
9. x = 9°
10. x = 5°
11. x = 7°
Step-by-step explanation:
1. 76° + 56° + m∠1 = 180°
∴ m∠1 = 180° - (76° + 56°) = 48°
m∠1 = 48°
2. m∠1 = 67° + 62° = 129°
m∠1 = 129°
3. m∠1 = 152° - 115° = 37°
m∠1 = 37°
4. m∠1 = 180° - (52° + 42°) = 88°
m∠1 = 88°
m∠2 = 42°
m∠3 = 180 - (42° + 25°) = 113°
m∠3 = 113°
5. m∠1 = 180° - 118° = 72°
m∠1 = 72°
m∠2 = 180° - 72° - 73° = 35°
m∠2 = 35°
m∠3 = 73° - 49° = 24°
m∠3 = 24°
6. m∠5 = 180° - m∠52° - m∠47° = 81°
m∠5 = 81°
m∠1 = 81° + 47° = 128°
m∠1 = 128°
m∠2 = 52°
m∠3 = 47°
m∠4 = 180° - 47° = 133°
m∠4 = 133°
7. m∠3 = 95°
m∠5 = 180° - 144° = 36°
m∠5 = 36°
m∠6 = 180° - 95° - 36° = 49°
m∠6 = 49°
m∠4 = 180° - 95° = 85°
m∠4 = 85°
m∠2 = 85°
m∠7 = 360° - (38° + 85° + (180° - 49°)) = 106°
m∠7 = 106°
m∠1 = 360° - (85° + 90° + 144°) = 41°
m∠1 = 41°
8. (10·x - 11)° + (3·x - 2)° + (3·x + 1)° = 16·x° - 12° = 180°
16·x = 180°+ 12° = 192°
x° = 192°/16 = 12°
x = 12°
9. (3·x - 5)° + (7·x + 5)° + 90 = 180°
10·x + 90° = 180°
10·x = 180°- 90° = 90°
10·x = 90°
x = 90°/10 = 9°
x = 9°
10. 180 - 151 = 29°
(11·x - 1)° + (20·x - 3)° + 29° = 180°
31·x° + 25° = 180°
31·x° = 180° - 25° = 155°
31·x° = 155°
x = 155/31 = 5°
x = 5°
12. (4·x + 13) + (6·x + 2) + 180 - (14·x - 13)
208° - 4·x° = 180°
208° - 180° = 4·x°
28° = 4·x°
4·x° = 28°
x = 28°/4 = 7°
x = 7°.
how many moles are in 24 grams of argon?
Please hurry I’m having trouble on this question
Answer:
c
Step-by-step explanation:
Answer:
B. Y = 1.5x
Step-by-step explanation:
on 5x (2 + 1)2 : 3 =
Step 1 Add 2 to both sides.
5x=3+2
Step 2 Simplify 3+23+2 to 55.
5x=5
Step 3 Divide both sides by 5.
x=1
Hoped this helped :)
Also if this answered your question you can maybe give me brainilest?
help me out with this pls (multiple choice)
Answer:
B
Step-by-step explanation:
[tex] \tan( 30) = \frac{y}{7 } \\ y = \sqrt{147} = 7 \sqrt{3} \\ {x}^{2} = {7}^{2} + {(7 \sqrt{3}) }^{2} \\ {x}^{2} = 49 + 147 = 196 \\ x = \sqrt{196} = 14[/tex]
PLEASE HELP ME, ITS ONLY ONE QUESTION!!!!!!!
Answer:
B and D are both correct.
(5x-3)^2 -60x=(5x-3)^2
Answer:
x = 0
Step-by-step explanation:
Answer:
hope you can understand what im saying
Please show work. It’s really urgent too! Thanks :) Sorry if it’s bad quality.
i think that for number one it would be
13. The surveys of interest for a concert produced these data points about the relation between ticket
price and ticket sales
Ticket Price (S)
3
5
7
9
11
13
Ticket Sales (S) 1447 1353 1212 1025 790 509
(A) Find the quadratic equation that best models the data,
14a)
(B) Predict the ticket sales if the tickets are $8 each.
14b)
(C) What would the price of the ticket have been if there
is $1000 in ticket sales?
14c)
Answer:
1500.110 - 0.157x - 5.853x² ;
1124.262
Step-by-step explanation:
Given the data:
Price __ Sales
3 ____1447
5 ___ 1353
7 ____ 1212
9 ____1025
11 ____790
13 ____509
Usibg the quadratic regression calculator :
1500.110 - 0.157x - 5.853x²
If ticket price = $8 each
Ticket sales will be :
y = 1500.110 - 0.157(8)- 5.853(8^2)
= 1124.262
Suppose a rabbit population of 10 rabbits triples every month. Write and solve a function for how many rabbits will exist after 3 months.
Answer:
40
Step-by-step explanation:
10 rabbits
+ 3 months = 30 rabbits
40 rabbits
Cora is playing a game that involves flipping three coins at once let the random variable H be the number of coins that land showing heads. Here is the probability distribution for H.
Answer:
[tex]P(H <3) = 0.875[/tex]
Step-by-step explanation:
Given (Missing from the question):
[tex]\begin{array}{cc}{H}&{P(H)&0&0.125&1&0.375&2&0.375&3&0.125\end{array}[/tex]
And the required question is:
Determine the P(H < 3)
P(H <3) implies that: P(H = 0) or P(H = 1) or P(H = 2)
So, we have:
[tex]P(H <3) = P(H = 0) + P(H = 1) + P(H = 2)[/tex]
[tex]P(H <3) = 0.125 + 0.375 +0.375[/tex]
[tex]P(H <3) = 0.875[/tex]
Answer:
0.5
Step-by-step explanation:
That's the right answer on Khan
Two cars drive on the same highway in the same direction. The graphs show the distance, , of each one as a function of time, . Which car drives faster? Explain how you know.
Answer:
Car b
Step-by-step explanation: Because it’s going higher on the graph because it’s going more straight than car a which is going more sideways
can somebody help me please
Answer:
x- 0,3 y-10,0
Step-by-step explanation:
A group of students is timed while sprinting 100 meters. Each student’s speed can be found by dividing 100 m by their time. Is each statement true or false?
Speed is a function of time.
Time is a function of distance.
Speed is a function of number of students racing.
Time is a function of speed.
B.Time is a function of distance. is the answer ot the question
A group of students is timed while sprinting 100 meters. Each student’s speed can be found by dividing 100 m by their time. Is each statement true or false?
Speed is a function of time.
Time is a function of distance.
Speed is a function of number of students racing.
Time is a function of speed.
6-Qual o resultado da expressão:129+3-12×3+15×6=
A) 77
B)97
C)90
D)87
Answer:
1250
Step-by-step explanation:
that's what I got please let me know if I'm correct
can you solve this problem for me 40/4=x/2
Answer:
40/4=x/2
10×2=x
x=20 is your answer
x = 20
is your answer
Let's solve your equation step-by-step.
40
(40)*(2)=x*(4)
80=4x
Step 2: Flip the equation.
4x=80
Step 3: Divide both sides by 4.
Virginia needed some batteries for her flashlights. She bought 4 batteries for $6.80. At that rate, how much would 10 batteries cost?
Answer:
$17
Step-by-step explanation:
First find the cost of 1 battery.
$6.80 ÷ 4 = $1.70
Then multiply the cost of one battery by 10.
$1.70 x 10 = $17
Answer:
10 batteries would cost $17
please help mee
[tex]7 - ( - 3)[/tex]
Answer:
10
Step-by-step explanation:
7-(-3)=7+3=10
Guys please I need a lot of help I would deeply appreciate it
Answer:
I think is number 2 in the corner
26 out of 65 as a percentage
How would you do that without a calculator?
Answer:
40%
Step-by-step explanation:
you would first simply the fraction down
13 goes into both numbers so the fraction can be simplified to
2/5 which is think is simply enough to know that 2/5 is 40% but if not the explanation would be
100÷5 =20
20 x by the 2 from the fraction
= 40%
Step-by-step explanation:
65 = 100%
0.65 = 1%
26 = x%
x = (26 ÷ 0.65)%
x = 40%
--------------------------FOLLOW MEHow do I write an equation for a line with a slope of ²/³ that has a y-intercept at -2.Titer eat at 2
Answer:
y = 2/3x - 2
Step-by-step explanation:
Given :
Slope, b = 2/3
y - intercept, c = - 2
The equation of a line can be expressed in slope intercept form as :
y = bx + c
b = slope ; c = y - intercept
Hence, line equation becomes ;
y = 2/3x - 2
WILL MARK BRAINIEST AND GOOD REVIEW
Answer: ummmm... 24%
Step-by-step explanation:
zero point three divided by zero point 9
Answer:
0.33333
Step-by-step explanation:
Answer: the answer is 0.3 with a recipricol bar
Step-by-step explanation:
