With the help of a trusted adult, Karissa is connecting objects that conduct electricity with wires. So far she has a battery, a light bulb, and three other objects. Which of the following objects will conduct electricity well?
l. Gold ring
ll. Steel paper clip
lll. Plastic pipe
1.) I only
2.) III only
3.) I and II
4.) II and III
( Pls answer correctly and ill give extra points and give brainliest, ty <3)
Answers
Answer: would be 2, | and ||
Step-by-step explanation:
Related Questions
Suppose we have a random sample of size n = 5 from a continuous uniform distribution on the interval [0, 1]. Find the probability that the third largest observation in the
sample is less than 0.7.
Answers
The probability that the third largest observation in the sample is less than 0.7 is 0.2401 = 24.01%.
How do we calculate?The sample size n = 5,
Therefore the order statistics will be represented as X₁, X₂, X₃, X₄, and X₅.
Probability that X₃ is less than 0.7:
Since X₃ is the third largest observation = (X₁ and X₂) < 0.7.
The probability that X₃ is less than 0.7 is (0.7)² = 0.49.
The Probability that X₁ and X₂ < or equal to 0.7 is found as:.
The probability that both X₁ and X₂ are less than or equal to 0.7 is (0.7)² = 0.49 because in a continuous uniform distribution, the probability of any single observation being less than 0.7 is 0.7 - 0 = 0.7.
We then get the product of both cases:
Probability = 0.49 * 0.49 = 0.2401
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If you have 10 tennis players in a round-robin tournament. How many games will they need to play before each player has played every other player?
Answers
Answer:
6
Step-by-step explanation:
i just had the same question :)
sam sent a email to 3 friends on monday. each of these friends then sent a email on tuesday. on wensday each of those friends then sent a email to 3 friends write the prime factorization of the number of emails that were sent on wensday
Answers
3 x 1 = 3 Tuesday
6 x 9 = 54 emails on wednesday
The area of this square is one hundred twenty-one square centimeters. What is the length of one side of this square?
Answers
Answer: 11
Step-by-step explanation:
Answer:
11 square centimeters
Step-by-step explanation:
The area of a rectangle is length times width. A square is a type of rectangle that has four equal sides, so if we know one side we know all four.
A = l x w
121 = l x w
Since we know l and w are equal we can take the square root of 121, which is 11.
which expression is a cube root of -2i?
Answers
The cube root of -2i,
⇒ ∛2[ cos(π/6) + i sin(π/6) ]
We can represent -2i in polar form as,
r(cosθ + i sinθ)
by computing its magnitude and angle.
The magnitude of -2i is 2
Since the absolute value of any imaginary number is equal to its magnitude.
To find the angle θ,
We can use the fact that the tangent of an angle is equal to the ratio of the opposite side to the adjacent side.
In this case,
The opposite side is -2 and the adjacent side is 0.
Therefore, we have tanθ = -2/0, which is undefined.
However,
We can use the fact that the cube root of a complex number is equal to the cube root of its magnitude times exp(iθ/3) to find the cube root of -2i.
So, the cube root of -2i is equal to the cube root of 2 times exp(iθ/3).
Now, we need to find the value of θ/3. Since θ is undefined,
we will represent it as π/2 + 2πn,
where n is any integer.
So, θ/3 = (π/2 + 2πn)/3 = π/6 + 2πn/3.
Therefore, the cube root of -2i is equal to
⇒ ∛2 [ cos(π/6 + 2πn/3) + i sin(π/6 + 2πn/3) ]
Now put n = 0
⇒ ∛2[ cos(π/6) + i sin(π/6) ]
This is the final form of the cube root of -2i in the required form.
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if the numbers 8 and 12 are increased by 25%and 33 1/3 % respectively,what will be the average increament
Answers
The average increment is 3.
To find the average increment, we need to calculate the total increment and divide it by the number of values.
Let's calculate the increments for 8 and 12:
For 8 increased by 25%:
Increment = 8 * 0.25 = 2
For 12 increased by 33 1/3%:
Increment = 12 * (1/3) = 4
Now, let's find the average increment:
Total increment = Increment for 8 + Increment for 12 = 2 + 4 = 6
Number of values = 2
Average increment = Total increment / Number of values
= 6 / 2
= 3
Therefore, the average increment is 3.
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Two numbers are in the ratio of 2 to 3.
If the smaller number is 18, the larger number is _____.
A. 21
B. 27
C. 36
D. 54
Answers
What is the percent of 1 - 3√(5/35) ?
Answers
Answer:
1 - 3√(5/35) = 1 - 3√(1/7) = 1 - 3*(1/sqrt(7)) ≈ 0.0755
0.0755 * 100 = 7.55%
Step-by-step explanation:
To find the percentage of 1 - 3√(5/35), we need to first evaluate the expression.
1 - 3√(5/35) = 1 - 3√(1/7) = 1 - 3*(1/sqrt(7)) ≈ 0.0755
To convert this decimal to a percentage, we simply multiply by 100:
0.0755 * 100 = 7.55%
Find the variance of the following data. Round the answer to one decimal place.
Answers
Solution
For this case we have the following info:
x -4 -3 -2 -1 0 1
P(X) 0.2 0.1 0.1 0.2 0.1 0.3
We can find the variance with this formula:
\(\text{Var(X)}=E(X^2)-\lbrack E(X)\rbrack^2\)We can find the expected value like this:
\(E(X)=\sum ^n_{i=1}x_iP(X_i)=-4\cdot0.2-3\cdot0.1-2\cdot0.1-1\cdot0.2+0\cdot0.1+1\cdot0.3^{}\)Solving we got:
E(X)= -1.2
The second moment is given by:
\(E(X^2)=\sum ^n_{i=1}x^2_iP(X_i)=16\cdot0.2+9\cdot0.1+4\cdot0.1+1\cdot0.2+0\cdot0.1+1\cdot0.3\)Solving we got:
E(X^2)= 5
Solving we got:
\(\text{Var(X)}=5-(-1.2)^2=3.56\)Rounded to one decimal place we got:
3.6
Dia is 10 years old. How many years have to add with twice of her age to get 24?
Answers
Answer:
4
Step-by-step explanation:
twice her age:
10*2 = 20
24-20 = 4
Answer:
4 i believe that's the answer
Joseph leans a 20-foot ladder against a wall so that it forms an angle of 69° with the
ground. How high up the wall does the ladder reach? Round your answer to the
nearest hundredth of a foot if necessary.
Answers
Answer:
18.67 ft
Step-by-step explanation:
|\
| \
| \
h | \ 20 ft
| \
| \
|-- 69° \
---|----------------
For the 69° angle, h is the opposite leg, and 20 ft is the hypotenuse.
sin A = opp/hyp
sin 69° = h/20
h = 20 * sin 69°
h = 18.67
Answer: 18.67 ft
2. If y varies inversely as the square root of x, find the percentage change in y when x is
increased by 21%.
Answers
The percentage increase in the value of y due to the increase in x by 21% is 10%
Inverse relationship :
y α 1/√ny = k/√x - - - - - - (1)
Increase in x by 21% = 0.21
y = k/√1+0.21x
y = k/√1.21x
y = k/ 1.1√x - - - (2)
Comparing the (1) and (2)
y has changed from 1 to 1.1
Increase in y = (1.1 - 1) = 0.1
Expressing the increase as a percentage :
0.1 × 100% = 10%
Hence, the percentage increase in y is 10%
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math math math math math math math
Answers
The angle m∠JIX is 90 degrees.
How to find angles in line intersection?IX is perpendicular to IJ. Therefore, angle m∠JIX is 90 degrees.
IG bisect CIJ. Hence,
m∠CIG ≅ m∠GIJ
Therefore,
m∠CIX = 150 degrees
Hence, let's find m∠JIX.
Therefore, m∠JIX is 90 degrees because IX is perpendicular to IJ. Perpendicular lines forms a right angle.
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The measure of angle m∠JIX is estimated to be 90⁰.
How to find the angles?You should understand that an angle is a figure formed by two straight lines or rays that meet at a common endpoint, called the vertex.
IX is perpendicular to IJ. Therefore, angle m∠JIX is 90⁰.
Frim the given parameters,
IG⊥CIJ.
But; m∠CIG ≅ m∠GIJ
⇒ m∠CIX = 150⁰
Hence, let's find m∠JIX.
Therefore, m∠JIX is 90⁰ because IX is perpendicular to IJ. Perpendicular lines forms a right angle.
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A theater has 1200 seats. Each row has 20 seats. Write and solve an equation to find the number x of rows in the theater.
An equation that represents this problem is
=1200.
There are
? rows in the theater.
Answers
1200 divided by 20=60
Plz help I am timed : (
Christian earned a 70, 89, 91, and 82 on his last four
spelling tests. What was Christian's average for these four
tests?
OA) 81
OB) 82
OC) 83
OD) 84
Answers
Answer:
its c or 83 bc you add them all together then divide by the amount of grades he has in total
explanation: 70+89+91+82= 332/4(all together) would be 83
Which of the following represents an INEFFICIENT point of production?
a. Point A
b. Point B
c. Point D
d. None
e. Point C
Answers
The point that represents an INEFFICIENT point of production is point A.
The correct answer is an option (a)
In this question we have been given a graph of Skateboards vs. Bikes.
We need to find the point that represents an INEFFICIENT point of production.
Inefficient production means the economy can be producing more goods without using any additional resources.
In given production possibility curve, an INEFFICIENT point of production is point A.
Therefore, the point that represents an INEFFICIENT point of production is point A.
The correct answer is an option (a)
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how do you get people to answer your question? If this wasnt about asking how to get people to answer your question and instead was something like a math problem or multiple choice, what could i say or do to get more people if there is a way that you use ldk.
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Answers
Answer:
Uhm..
Step-by-step explanation:
I just keep it up and watch and then ramdom people answer.
Like you just have to wait for someone to answer. That is what I do And if it does not help I put it up again.
the graph f (x) = 4/x2-2x-3 is shown. For which value of x is f(x) decreasing?
Answers
Answer:
2nd option
Step-by-step explanation:
the graph is decreasing when the slope of the curve is negative.
This means the graph is sloping downwards.
This occurs between 1 and 3 and from 3 to ∞
The interval in which f(x) is decreasing is then
(1, 3 ) U (3, ∞ )
what is the first derivative of:
sin(x)*cos(x)/(x^2-x)
Answers
Answer:
that's the answer
Step-by-step explanation:
for the next time, dont post you derivative questions on brainly, there is a lot of websites that can solve this for you with steps.
In a certain store, on Tuesdays customers over 55 years of age receive a 20% discount on all apparel and a 15% discount on all housewares and home accessories. Tina purchases six place mats at $6.50 each, six napkins at $4.00 each, a skirt for $42.00, and a knit top for $31.00. A sales tax of 6.5% is charged on all nonapparel items. Apparel items individually priced under$500 are tax exempt. How much is Tina's total bill? Tina is 60 years old.A. $115.43B. $116.00C. $111.95
Answers
Tina purchases:
Housewares and home accessories:
6 place mats at $6.50 each
6 napkins at $4.00 each
Apparel:
1 skirt for $42.00
1 knit top for $31.00
The discount on all apparel is 20% and the discount on all housewares and home accessories is 15%.
There is a sales tax of 6.5% charged on all nonapparel items.
The cost of the apparel items is:
\(\begin{gathered} 42.00+31.00=73.00 \\ After\text{ the discount it is:} \\ 73.00-0.2*73.00=73.00-14.60=58.40 \end{gathered}\)The cost of the apparel items is $58.40 after the discount.
The cost of the housewares and home accessories is:
\(\begin{gathered} 6*6.50+6*4.00=39.00+24.00=63.00 \\ After\text{ the discount it is:} \\ 63.00-0.15*63.00=63.00-9.45=53.55 \\ AFter\text{ the sales tax it is:} \\ 53.55+53.55*0.065=53.55+3.48=57.03 \end{gathered}\)The cost of the housewares and home accessories after the discount and the sales tax is $57.03.
The total cost is:
\(58.40+57.03=115.43\)The total bill is $115.43 (option A)
In the class election, the student who gets the highest number of votes will become the class president and the one who gets the second highest
number of votes will become the class vice president. Tabitha and four other students were candidates. Tabitha's teacher announces the election
results as percentages of the total number of votes. Two hundred votes were cast in the election. In this activity, you will relate the percentages of
the votes received to the actual numbers.
Question 1
The table gives the percentage of votes each candidate received. Use the information in the table to understand the results of the election
Candidate Percentage of Votes
Tabitha
30%
Vincent
12%
Esmeralda
22%
Nancy
5%
Tyler
31%
Part A
How many votes did Tabitha receive?
Answers
Answer:
Tabitha received 60 votes.
Step-by-step explanation:
200 votes × .30 = 60 votes
The given percentage of votes shows that Tyler win the class elections (has the highest percentage of votes - 31%), and Tabitha received 60 votes (30% of 200).
What are percentages?A percentage is a fraction of a whole number represented as a number out of 100.
How do we solve the given question?We are given the percentages of votes received by the candidates in a class election. We are also informed that a total of 200 votes were cast in the elections.
The percentages are as follows:
Tabitha = 30%
Vincent = 12%
Esmeralda = 22%
Nancy = 5%
Tyler = 31%.
We are asked to find the winner of the election and the number of votes Tabitha received.
As Tyler receives the highest percentage of votes (31%), he is the winner of the elections.
Tabitha received 30% of the votes, and the total number of votes = 200
∴ Number of votes Tabitha received = 30% of 200 = (30/100)*200 = 0.3*200 = 6.
∴ Tabitha received a total of 60 votes.
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can someone please help
Answers
Answer:
<WXV and <YXZ, <W and <Y
Step-by-step explanation:
ASA stands for Angle Side Angle. You need two corresponding congruent sides and two pairs of congruent corresponding angles that border it.
Looking at XY, we can see the two angles that border it are <YXZ and <Y.
<WXV and <W are the angles that correspond with those two angles.
What is the domain of the square root function graphed below? On a coordinate plane, a curve open up to the right in quadrant 4. It starts at (0, negative 1) and goes through (1, negative 2) and (4, negative 3). x less-than-or-equal-to negative 1 x greater-than-or-equal-to negative 1 x less-than-or-equal-to 0 x greater-than-or-equal-to 0
Answers
Answer:
Its D
Step-by-step explanation:
Ed2021
Answer
x greater-than-or-equal-to 0
Step-by-step explanation:
yes
What is the total area of the figure below?
Answers
Answer:
total area: 141 in²
Step-by-step explanation:
area of the figure: area of two triangles together + area of trapezium
area of the figure: 1/2 * base * height + 1/2 * ( a + b ) * height
area of the figure: 1/2 * 6 * 8 + 1/2 * ( 10 + 16 ) * 9
area of the figure: 24 + 117
area of the figure: 141 in²
WILL GIVE BRAINLIEST IF CORRECT
Explain reasoni my
Answers
The measure of exterior angle 1 is 120 degrees. (option a)
In this case, we are given two interior angles of the polygon, which are 60 degrees and 25 degrees. The sum of the measures of the interior angles of a polygon with n sides is given by the formula (n-2) x 180 degrees. Therefore, for this polygon, the sum of its interior angles can be calculated as
=> (n-2) x 180 = (3-2) x 180 = 180 degrees.
Next, we can use the fact that the sum of an exterior angle and its adjacent interior angle is always 180 degrees. Therefore, we can calculate the measure of the exterior angle 1 as follows:
Exterior angle 1 + Interior angle 1 = 180 degrees
Exterior angle 1 + 60 degrees = 180 degrees (since we know that Interior angle 1 is 60 degrees)
Exterior angle 1 = 180 degrees - 60 degrees
Exterior angle 1 = 120 degrees
Hence the correct option is (a).
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2x + y = 7
-2x - y = 6
Solve systems of equations by substitution
Answers
Answer:
No solution.
Step-by-step explanation:
2x + y = 7
-2x - y = 6
From the first equation:
y = 7 - 2x
Plug this into the second equation:
-2x - (7 - 2x) = 6
-2x + 2x = 6 + 7
0 = 13
this doesn't make sense so theer is:
No solution.
Solve for x and find the missing angles.
Answers
Answer:
5x = 2x + 24 ( opposite angles are equal)
5x - 2x = 24
3x = 24
x = 24/3
x = 8
X = 85x = 5 × 8 = 40
2x + 24 = 2(8)+24 = 16 +24 = 40
The value of "x" given in the figure where two lines intersect each other forming vertically opposite angles is 8.
Vertically opposite angles = The opposite angles formed which share the same ratio when two lines intersect each other called Vertically opposite angles. The sum of the Vertically opposite angles is \(180^0\).
Intersecting lines - When two lines meet each other at a finite point is called intersecting lines. These lines have at least one common point called Intersecting lines.
Example - Crossroads, scissors, etc
In the given figure,
According to the property of Vertically opposite angles, the angles of the Vertically opposite angles are always equal.
5x = 2x + 24
3x = 24
Divide both sides by 3 we get,
x = \(\dfrac{24}{3}\)
x = 8.
The value of "x" given in the figure is 8.
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40% Of Francine's t shirts are red. If she has 20 shirts. How many are red
Answers
17. 17. The scores for a math test are shown below, ordered from smallest to largest. 60 61 62 63 63 64 64 65 66 66 66 69 72 72 72 74 75 80 82 84 86 86 87 87 89 89 90 93 94 98 Fill out the stem and leaf plot below for this data. Enter the leaves separated by commas (ex: 1,1,2,3). Stems Leaves
Answers
Answer:
Filling the values we have;
Explanation:
Given the data on the given table, we want to fill them in a stem leaves plot.
The tens values would be in the stems while the unit values will be written in their corresponding leaves.
Filling the values we have;
2/5 of employees in a company drive to work, 1/3 travel by bus and the rest walk. 1. Find the fraction of who walk.
Answers
Answer:
4/15
Step-by-step explanation:
2/5 drive
1/3 bus
and rest walk
fraction of those who walk is 1-(2/5+1/3)
2/5+1/3=(6+5)/15=11/15
15/15-11/15=4/15