Answers
Answer:
A right triangle
Step-by-step explanation:
All interior angles in a triangle are equal to 180°.
x+x+2x = 180°
4x = 180°
x = 45°
So two of the angles are 45°, and the remaining angle is 45°×2 = 90° (a right angle).
Related Questions
pls answer below giving brainliest
Answers
Answer:
45
Step-by-step explanation:
Because its supplementary
Answer:
Angle 2: 45
Angle 3: 45
Angle 4: 135
Angle 5: 135
Angle 6: 45
Angle 7: 45
Angle 8: 135
Step-by-step explanation:
Angle 1 and 2 are supplementary meaning the angles add to 180 degrees.
180-135=45
4 is opposite of 1, so it is the same value (it is also supplementary to angle 2)
3 is opposite 2 and supplementary to 1, so it is 45 as well.
5 is the same as 1 because it is made from the same line crossing a parallel line to the one angle 1 is formed from (sorry that sounds confusing)
6,7,8 are found the same way as 2,3,4, and 5.
Makayla has 90 minutes to answer 36 questions on a school survey. How many minutes per question does she have?
0.4 minutes per question
2.5 minutes per question
3 minutes per question
4 minutes per question
Answers
Answer:
90/36 =2.5
Step-by-step explanation:
Answer:
2.5 minutes per question
I rly need help this is a diagnostic test and if I fail it I will be in sooo soo much trouble? Plz help
Answers
Answer:
1/3P
Step-by-step explanation:
P/3 is equal to 1/3P
The diameter of a circle is 4 meters. What is the circles circumference
Answers
Answer:
12.56m²
Step-by-step explanation:
So the formula for the circumference of a circle is π x diameter, so we just have to plug into our equation (we're using 3.14 as π):
3.14 x 4 = 12.56
So the circumference of your circle is 12.56 meters²
hope this helps:)
Urn 1 contains 4 blue tokens and 9 red tokens; urn 2 contains 12 blue tokens and 5 red tokens. You flip a coin twice and if you see head two times, then you pick urn 2 else (if you see at least once the tail) you pick urn 1 and draw out a token at random from that urn. Given that the token is blue, what is the probability that the token came from urn 2
Answers
Answer:
0.433
Step-by-step explanation:
From the given information;
Let represent Urn 1 to be Q₁ ;
Urn 2 to be Q₂
and the event that a blue token is taken should be R
SO,
Given that:
Urn 1 comprises of 4 blue token and 9 red tokens,
Then, the probability of having a blue token | urn 1 picked is:
[tex]P(R|Q_1) = \dfrac{4}{4+9}[/tex]
[tex]= \dfrac{4}{13}[/tex]
Urn 2 comprises of 12 blue token and 5 red tokens;
Thus [tex]P(R| Q_2) = \dfrac{12}{12+5}[/tex]
[tex]=\dfrac{12}{17}[/tex]
SO, if two coins are flipped, the probability of having two heads = [tex]\dfrac{1}{4}[/tex]
(since (H,H) is the only way)
Also, the probability of having at least one single tail = [tex]\dfrac{3}{4}[/tex]
(since (H,T), (T,H), (T,T) are the only possible outcome)
Thus: so far we knew:
[tex]P(Q_2) = \dfrac{1}{4} \\ \\ P(Q_2) = \dfrac{3}{4}[/tex]
We can now apply Naive-Bayes Theorem;
So, the probability P(of the token from Urn 2| the token is blue) = [tex]P(Q_2|R)[/tex]
[tex]P(Q_2|R) = \dfrac{P(R \cap Q_2)}{P(R)} \\ \\ = \dfrac{P(R|Q_2) * P(Q_2)}{P(R|Q_2) \ P(R_2) + P(R|Q_1) \ P(Q_1)} \\ \\ \\ \\ = \dfrac{\dfrac{12}{17} \times \dfrac{1}{4} }{\dfrac{12}{17} \times \dfrac{1}{4} + \dfrac{4}{13} \times \dfrac{3}{4}} \\ \\ \\ = \dfrac{13}{30}[/tex]
= 0.433
Using traditional methods it takes 11.4 hours to receive a basic flying license. A new license training method using Computer Aided Instruction (CAI) has been proposed. A researcher used the technique on 23 students and observed that they had a mean of 11.0 hours with a variance of 3.61. Is there evidence at the 0.025 level that the technique reduces the training time? Assume the population distribution is approximately normal. Step 2 of 5: Find the value of the test statistic. Round your answer to three decimal places.
Answers
Answer:
The value of the test statistic is [tex]t = -1.01[/tex]
The pvalue of the test is of 0.1617 > 0.025, which means that there is no evidence at the 0.025 level that the technique reduces the training time.
Step-by-step explanation:
Using traditional methods it takes 11.4 hours to receive a basic flying license. Is there evidence at the 0.025 level that the technique reduces the training time?
This means that at the null hypothesis, we test that the mean is of 11.4 hours, that is:
[tex]H_0: \mu = 11.4[/tex]
At the alternate hypothesis, we test that the mean is less than this, that is:
[tex]H_a: \mu < 11.4[/tex]
The test statistic is:
[tex]t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}[/tex]
In which X is the sample mean, [tex]\mu[/tex] is the value tested at the null hypothesis, [tex]s[/tex] is the standard deviation and n is the size of the sample.
11.4 is tested at the null hypothesis:
This means that [tex]\mu = 11.4[/tex]
A researcher used the technique on 23 students and observed that they had a mean of 11.0 hours with a variance of 3.61.
This means that [tex]n = 23, X = 11, s = \sqrt{3.61} = 1.9[/tex]
Value of the test-statistic:
[tex]t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}[/tex]
[tex]t = \frac{11 - 11.4}{\frac{1.9}{\sqrt{23}}}[/tex]
[tex]t = -1.01[/tex]
Pvalue of the test and decision:
The pvalue of the test is the probability of finding a sample mean of 11 hours or less, which is the pvalue of t = -1.01 with 23 - 1 = 22 degrees of freedom.
Using a calculator, this pvalue is of 0.1617.
The pvalue of the test is of 0.1617 > 0.025, which means that there is no evidence at the 0.025 level that the technique reduces the training time.
Yesterday, the price of a can of beans at five supermarkets was $1.92, $2.01,
$1.89, $2.22, and $2.16, respectively, but today each supermarket raised its
price by $0.10. What is today's mean price of a can of beans at the five
supermarkets?
A. $2.24
B. $2.14
C. $2.04
D. $2.34
SUBMIT
Answers
Answer:
B. $2.14
Step-by-step explanation:
Given that
The price of the five supermarkets would be $1.92, $2.01,
$1.89, $2.22, and $2.16
And, each supermarket would be increased by $0.10
So, the today mean price would be
= ($1.92 + $2.01 + $1.89 + $2.22 + $2.16 + $0.10 × 5) ÷ (5)
= $10.7 ÷ 5
= $2.14
Therefore the second option is correct
PLEASEEEEEEEEE HELPPPPPP FASTT!!
Answers
Oak Street and Elm Street run parallel to each other. When Main Street
intersects them, it forms exterior 28, measuring 60°. What is the-
measure of
22?
Answers
Answer:
100degrees
Step-by-step explanation:
From the given diagram;
<2 = <6 (corresponding angle)
Since <6 + 80 = 180
<6 = 180 - 80
<6 = 100 degrees
Since <2 = <6, hence <2 = 100degrees
Solve for
X/11=10/12
Give your answer as an improper
fraction in its simplest form.
Answers
12x = (10)(11)
12x=110
x=110÷12
x=55/6
Write the log equation as an exponential equation. You do not need to solve for x.
log (x-6) (6) = 3x – 5
Answers
Answer:
(x-6)^3x-5 =6
Step-by-step explanation:
logb a=c ------> b^c =a
Which table shows exponential decay?
х
1
2
3
4
у
16
8
4
2
LE
X
1
2
3
4
y
16
12
8
4
Х
у
16
1
Answers
Answer:
it's the first graph
Step-by-step explanation:
I just did the Unit Test 7 part 2: Exponential and Radical Functions and got a 100%
oh and for the exponential growth question that is similar to this one, that's also the first graph.
The exponential function from the table is y = 32(0.5)ˣ.
Exponential functionAn exponential function is given by:
y = abˣ
where a is the initial value of y at x = 0, y, x are variables and b is the multiplication factor
From the first table, we can see that the value of y decreases 50% each time. Using point (1, 16):
16 = ab¹
ab = 16 (1)
Also point (2, 8):
ab² = 8
a = 32, b = 0.5
The exponential function from the table is y = 32(0.5)ˣ.
Find out more on Exponential function at: brainly.com/question/12940982
1.
Which of the following is acute angle?
Answers
A pathologist has been studying the frequency of bacterial colonies within the field of a microscope using samples of throat cultures from healthy adults. Long-term history indicates that there is an average of 2.90 bacteria colonies per field. Let r be a random variable that represents the number of bacteria colonies per field. Let O represent the number of observed bacteria colonies per field for throat cultures from healthy adults. A random sample of 100 healthy adults gave the following information:
r 0 1 2 3 4 5 or more
O 11 14 30 17 22 6
The pathologist wants to use a Poisson distribution to represent the probability of r, the number of bacteria colonies per field. The Poisson distribution is given below.
P(r) = e^−λλr / r!
Here λ = 2.90 is the average number of bacteria colonies per field.
Required:
Compute P(r) for r = 0, 1, 2, 3, 4, and 5 or more.
Answers
Answer:
P(0) = 0.055
P(1) = 0.16
P(2) = 0.231
P(3) = 0.224
P(4) = 0.162
P(5 or more) = 0.168
Step-by-step explanation:
In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:
[tex]P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}[/tex]
In which
x is the number of sucesses
e = 2.71828 is the Euler number
[tex]\mu[/tex] is the mean in the given interval.
Here λ = 2.90 is the average number of bacteria colonies per field.
This means that [tex]\mu = 2.90[/tex]
Compute P(r) for r = 0, 1, 2, 3, 4, and 5 or more.
[tex]P(0) = \frac{e^{-2.9}*(2.9)^{0}}{(0)!} = 0.055[/tex]
[tex]P(1) = \frac{e^{-2.9}*(2.9)^{1}}{(1)!} = 0.16[/tex]
[tex]P(2) = \frac{e^{-2.9}*(2.9)^{2}}{(2)!} = 0.231[/tex]
[tex]P(3) = \frac{e^{-2.9}*(2.9)^{3}}{(3)!} = 0.224[/tex]
[tex]P(4) = \frac{e^{-2.9}*(2.9)^{4}}{(4)!} = 0.162[/tex]
5 or more:
This is
[tex]P(X \geq 5) - 1 - P(X < 5)[/tex]
In which:
[tex]P(X < 5) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) + P(X = 4) = 0.055 + 0.16 + 0.231 + 0.224 + 0.162 = 0.832[/tex]
[tex]P(X \geq 5) - 1 - P(X < 5) = 1 - 0.832 = 0.168[/tex]
So
P(5 or more) = 0.168
MATHS
1. Caleulate the area of a rectangle of length
250cm and width 200cm.
2. A square room is 650cm long. Find the area in:
(i) square centimeter (ii) square metres
Answers
Answer:
1. 50000
2.
i 274625000cm
ii 274.625m
Step-by-step explanation:
1. Area of a rectangle: length*width
250*200=50000cm
2. Volume of a cube: length^3
i 650^3=274625000cm
ii 650 cm=6.5m; 6.5^3=274.625m
lus
Find the expected value of a
random variable x having the
following probability distribution.
5
1
0
1
8
Probability
12
16
U22
112
1
2
Answers
Well formatted version of question:
Find the expected value of a random variable x having the following probability distribution.
x (-5,-1,0,1,5,8)
Probability (.12, .16, .28, .22, .12, .1)
Answer:
0.86
Step-by-step explanation:
The expected value E(X) is calculated as :
E(X) = Σ(x * p(x))
(-5)(0.12) + (-1)(0.16) + (0)(0.28) + 1(0.22) + 5(0.12) + 8(0.10)
-0.6 + -0.16 + 0 + 0.22 + 0.6 + 0.8
= 0.86
The function, f(x), is plotted below.
On a coordinate plane, a function curves up to (StartFraction pi Over 4 EndFraction, 0), curves down through (0, negative 0.5) to (StartFraction 3 pi Over 4 EndFraction, negative 4) and then curves back up.
What is reasonable estimate for the limit?
Limit of f (x) as x approaches StartFraction pi Over 4 EndFraction f(x) =
Answers
Answer:
-2
Step-by-step explanation:
Determining the limit from a graph edge
Answer:
-2
Step-by-step explanation:
If a conversion rate of 8 dollars is worth 13 euros, how many euros do you get
when you convert 500 dollars?
Answers
8/13 =500/x
(Cross multiply)
8x= 6,500
(Divide by 8 to isolate the variable)
x= 812.5
(Euros are paper money, not a coin system and they won’t give you more money than what you gave them so you must round down to the nearest whole number which is 812 Euros)
ANSWER:
812 Euros
I would appreciate it if someone could help answer this problem:)
Answers
Answer:
sum of exterior angles of a polygon=360
Step-by-step explanation:
4x+2x+x+4+x+4x+2=360
12x+6=360
2x+1=60
x=59/2
29.5
512
Which value is equivalent to
A
O
в 9
o
54
D • 59
Answers
Answer:
b
Step-by-step explanation:
What is the value of the expression below? 5 + (-3)
Answers
Answer: FAT SONIC SAYS.... THE ANSWER IS 125
Explanation: the sources up above
How long will it take $3000 to earn $900 interest at 6% simple interest?
20 points and brainly ;)
Answers
Answer:
5 years
Step-by-step explanation:
3000x.06=180 interest per year.
900/180 =5 years to earn 900 interest.
Do-Nothing #1 paid $8 for 2 paddle ball
paddles and 4 jigsaw puzzles. Do-Nothing #2
paid $18 for 3 paddle ball paddles and 10
jigsaw puzzles.
a.) How much did each jigsaw puzzle cost?
b.) How much did each paddle ball paddle cost?
Answers
If you came for a short answer
A=1.50
B=1
a) Each jigsaw puzzle costs $1.5.
b) Each paddle ball paddle costs $1.
Given that Do-Nothing #1 paid $8 for 2 paddle ball paddles and 4 jigsaw puzzles.
Do-Nothing #2 paid $18 for 3 paddle ball paddles and 10 jigsaw puzzles.
We need to find how much each cost.
Let's solve the problem step by step.
Let's assume the cost of each jigsaw puzzle is 'x' dollars, and the cost of each paddle ball paddle is 'y' dollars.
According to the given information:
The first person paid $8 for 2 paddle ball paddles and 4 jigsaw puzzles. So, we can write the equation as:
2y + 4x = 8............. eq(i)
The second person paid $18 for 3 paddle ball paddles and 10 jigsaw puzzles. So, we can write the equation as:
3y + 10x = 18............. eq(ii)
Now, we can solve these two equations to find the values of 'x' and 'y'.
To do so, we can multiply Equation 1 by 3 and Equation 2 by 2 to eliminate the 'y' term:
6y + 12x = 24............. eq(iii)
6y + 20x = 36............. eq(iv)
Subtracting Equation 3 from Equation 4, we get:
6y + 20x - (6y + 12x) = 36 - 24
6y + 20x - 6y - 12x = 12
8x = 12
x = 12/8
x = 1.5
Now, substitute the value of 'x' back into Equation 1 to find 'y':
2y + 4(1.5) = 8
2y + 6 = 8
2y = 8 - 6
2y = 2
y = 2/2
y = 1
So, the cost of each jigsaw puzzle is $1.5, and the cost of each paddle ball paddle is $1.
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The perimeter of a rectangular field is 238 yards. If the length of the field is 65 yards, what is its width?
Answers
Answer:
54 is the width
Step-by-step explanation:
65+65=130
238-130=108
108÷2=54
Answer:
The width of the rectangular is 54yards
Step-by-step explanation:
please mark me brainliest
You are a volunteer at a physical therapy clinic. A set of stairs you use to help patients is shown with its dimensions. What is the volume of the set of stairs?
Answers
D
D
D
Dd
D
Send
End
Ends
A rectangle has an area of 21x + 81 square units. If the width is 3 units, what is the length of the rectangle
Answers
6 3/4 divided by 4 1/2=
Answers
Answer:
1 1/2
Step-by-step explanation:
Hi there,
First convert your fractions to mixed numbers:
27/4 and 9/2
Then multiply
(remember to flip second fraction over)
27/4 x 2/9
You would get 54/36,
Now simplify 54/36
1 1/2
One number exceeds another by 9. The sum of the numbers is 35. What are the numbers? The numbers are (Use a comma to separate answers.
Answers
9514 1404 393
Answer:
13, 22
Step-by-step explanation:
Let s represent the smaller. The sum of the numbers is ...
s + (s+9) = 35
2s = 26 . . . . . . subtract 9
s = 13
s+9 = 22
The two numbers are 13 and 22.
_____
Additional comment
As you can see, the smaller number is half the difference of the sum and difference: s = (35-9)/2. This is the generic solution to a "sum and difference" problem.
The base radius of a cone is 8 mm, and it’s volume is 320mm. What is its height ?
Answers
Suppose we want to choose 2 colors, without replacement, from the 3 colors red, blue, and green. (a) How many ways can this be done, if the order of the choices is relevant? X (b) How many ways can this be done, if the order of the choices is not relevant?
Answers
Number of ways to choose two colors of three colors when order of choice is relevant and relevant are 6 and 3 respectively.
What are permutations and combinations?Permutation refers to placing all members of a set in a particular order or choice of order. Combination is a way of selecting items from a collection, so the order of selection (unlike permutation) does not matter.
Given,
Three colors, red, blue and green
a) Number of ways of choosing 2 colors out of three colors when order matter
= ³p₂
= 3!/(3-2)!
= (3×2×1)
= 6
b) a) Number of ways of choosing 2 colors out of three colors when order does not matter
= ³C₂
= 3!/(3-2)!2!
= (3×2×1)/(2×1)
= 3
Hence, when 6 and 3 are the number of ways to choose 2 colors from three colors when order matter and dose not matter respectively.
Learn more about permutations and combinations here:
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