Answer:
50, 50, 80.
Step-by-step explanation:
An acute triangle is defined as a triangle with no interior angle larger than 90 degrees. Knowing this, and the fact that the interior angles of a triangle add up to 180 degrees, we can assume that 50, 50, and 80 are three angles that could make up an acute triangle.
What is the equation of the line that is parallel to line y = -3x – 8 and passes
through the point (-2, 9)?
y= 1x + 29
y = -3x + 11
y = -3x + 3
y = 4x + 53
Answer:
y = -3x + 3
Step-by-step explanation:
Since the line is parallel, it has the same slope. Plug the point you have into the equation y - y1 = slope (x -x1) to get your answer, which should be y = -3x +3
Hopefully this helps - let me know if you have any questions!
Answer:
C: y = -3x +3
Step-by-step explanation:
Lines that are parallel have the same slope have so the slope of the line in -3, now we have to find the y-intercept, we can do this by substituting -2 for x and 9 for y and solve for b
9 = -3(-2) +b
9 = 6 + b
b = 3
So the line that is parallel to y = -3x -8 and goers through the point (-2,9) is y = -3x + 3 or answer C
If the length of each side of a triangle is doubled then its perimeter is _________________
Answer:
If the length of each side of a triangle is doubled then its perimeter is also doubled.
What is the best way to learn percentage?
Answer: To write a percentage as a decimal, simply divide it by 100. For example, 50% becomes 0.5, 20% becomes 0.2, 1% becomes 0.01 and so on. We can calculate percentages using this knowledge. 50% is the same as a half, so 50% of 10 is 5, because five is half of 10 (10 ÷ 2).
Step-by-step explanation:
The parent function f(x) = log3x has been transformed by reflecting it over the x-axis, stretching it vertically by a factor of two and shifting it down three units. which function is representative of this transformation?
g(x) = log3(-2x) - 3
g(x) = -2log3(x) - 3
g(x) = 2log3(x) + 3
g(x) = log3(2x) + 3
Answer:
f(x) = -2 log3x - 3.
Step-by-step explanation:
f(x) = log3x
Reflecting over x axis makes it f(x) = f(x) = -log3x
Vertical stretch gives -2 log3x
Finally moving the graph down 3 units gives -2 log3x - 3.
What is the measure of Arc BA? An explanation would be much appreciated.
Answer:
m<BA = 180degrees
Step-by-step explanation:
First you must know that measure of <BA is 180 degrees and m<CD = m<BA
Since <CD = 16z - 12, hence;
180 = 16z - 12
16z = 180++12
16z = 192
z = 192/16
z = 12
Get <BA
m<BA = 16z - 12
m<BA = 16(12) - 12
m<BA = 192 - 12
m<BA = 180degrees
A university is applying classification methods in order to identify alumni who may be interested in donating money. The university has a database of 58,205 alumni profiles containing numerous variables. Of these 58,205 alumni, only 576 have donated in the past. The university has oversampled the data and trained a random forest of 100 classification trees. For a cutoff value of 0.5, the following confusion matrix summarizes the performance of the random forest on a validation set:
Predicted
Actual No Donation Donation
Donation 268 20
No Donation 5375 23439
The following table lists some information on individual observations from the validation set:
0.8
Observation ID Actual Class Probability of Donation Predicted Class
A Donation 0.8 No Donation
B No Donation 0.1 Donation
C No Donation 0.6 Donation
Compute the values of accuracy, sensitivity, specificity, and precision.
Answer:
Accuracy = 0.81
Sensitivity = 0.93
Specificity = 0.81
Precision = 0.047
Step-by-step explanation:
Given the confusion matrix :
Actual_______ Donation___ No Donation
Donation______ 268 (TP) _______ 20 (FN)
No Donation ___5375 (FP) _____23439 (TN)
Accuracy is calculated as :
(TP + TN) / (TP+TN+FP+FN)
(268 + 23439) / (268 + 23439 + 5375 + 20)
ACCURACY = (23707 / 29102) = 0.81
Sensitivity (True positive rate) :
TP ÷ (TP + FN)
268 ÷ (268 + 20)
268 ÷ 288 = 0.93
Specificity (True Negative rate) :
TN ÷ (TN + FP)
23439 ÷ (23439 + 5375)
23439 ÷ 28814
= 0.81
Precision :
TP ÷ (TP + FP)
268 ÷ (268 + 5375)
268 ÷ 5643
= 0.047
Simplify the expression 6−2+5+4.
A person, 35 meters away from a building, is looking up at a bird that is sitting on the top of the building. If the distance from that person to the bird is 91 meters, how tall is the building? (no website pls just answer)
Answer:
I think it is 56
Step-by-step explanation:
Prove Triangle congruence part 1
Answer:
there is five way to find that triangle is congruent. they are:
1. SAS axiom
2. SSS axiom
3. AAA axiom
4. ASA axiom
5. RHS axiom
What function is the inverse of the exponential function y = 3^x?
An orange traffic cone has a diameter of 14 inches and a height of 28 inches. What is the volume of the traffic cone? Round to the nearest tenth.
Answer:
14367 inch^3
Step-by-step explanation:
Diameter of the cone= 14 inches
Radius of the cone= Diameter/2= 14/2= 7 inches
Height= 28 inches.
Volume of the cone = 1/3 π r^2 .h
Then substitute for the values, we have
Volume= 1/3 × π × 7^2 × 28
Volume= 1436.9 inch^3
Volume in nearest tenth= 14367 inch^3
Two hundred and fifty-four people were surveyed regarding their favorite type of gemstone: 54% chose diamonds 6% chose sapphires 30% chose emeralds .. 10% rubies.Approximately, how many people did not choose emeralds or rubies?
Step-by-step explanation:
anyone GIRLS interested in talk...cuz I m getting bored
C
D
-3
Polygon ABCD has vertices A(-4,4), B(-1, 4), C(-3, 2), (-1, 1). Graph and label the vertices of
ABCD and its image A'B'C'D' after rotation it 90 degree counter clockwise. Choose the correct
ordered pairs of the image A'B'C'D'.
(2 Points)
O A'(-4,4), B'(-1,4), C(-3, 2), D(-1, 1)
Ο Ο Ο
O A'(4.4). B'(4.1), C(2, 3), D(1,1)
A'(-4,-4), B'(-4,-1), C(-2,-3), D(-1,-1)
Answer:
A'(-4,-4), B'(-4,-1), C(-2,-3), D(-1,-1)
Step-by-step explanation:
After counterclockwise 90 degree rotation X and Y coordinate swap and X coordinate changes its sign
Rotation of 90° (CounterClockwise) (x, y) ----->(-y, x)
Write "yes" or "no" to state whether or not the given side lengths would form a right triangle.
NO LINKS PLSSS
-will mark brainliest :)
Answer:
"yes" or "no"
Step-by-step explanation:
I PROMISE I'LL GIVE BRAINIEST
1+2x<9
Answer:
x<4
Step-by-step explanation:
1+2x<9
2x<8
x<4
7 (n+4) = 21
Please help me solve this
Answer: n = -1
Step-by-step explanation: distribute 7 to n +4 to get 7n +28 = 21
subtract 28 on both sides, to get 7n= -7 divide by positive 7, and get n=-1
plug it in to check 7(-1+4)=21
-1+4= 3
7(3)= 21
it checks out ^_^
A set of data was published in the fall 2019 Phi Kappa Phi Forum regarding the performance of Major League Baseball (MLB) umpires in calling balls and strikes. The article is based on data collected by MLB over eleven seasons (2008-2018). This study shows that it is common for umpires to make incorrect calls more than 20% of the time. An average game has about 300 pitches where the umpire has to make a decision. Assume that we take a random sample of 300 of the 4 million ball/strike calls in the database. From this sample of 300, there were 70 incorrect calls made for a sample proportion of.23. The question is does this one sample of size 300 with 70 incorrect calls provide sufficient evidence to allow us to conclude that the umpires are making bad calls at a rate greater than 20%?
Calculate the value of the Z test statistic using phat - 23 from the above description.
Answer:
The answer is "1.30".
Step-by-step explanation:
Proportion of population[tex]=0.20[/tex]
Ratio sample[tex]=\frac{70}{300}=\frac{7}{30}=0.23[/tex]
Statistics of the test:
[tex]\to Z=\frac{(0.23-0.2)}{\sqrt{(\frac{0.2\times(1-0.2)}{300})}}\\\\[/tex]
[tex]=1.30[/tex]
Sue Arva has 460 beads to make bracelets. Each bracelet will use 50 beads. How many bracelets will she be able to make? A. 9 B. 10 C. 16 D. 15
Answer:
A. 9
Step-by-step explanation:
So, she has 460 beads, and each braclet she makes requires 50 beads.
Therefore we will divide these numbers to get 9.2. This rounds to A. 9.\
Hope I help!
~PumpkinSpice1
consists of a formula a^2+b^2=c^2 which is used to figure out the value of (mostly) the hypotenuse in a right triangle. The a and b are the 2 "non-hypotenuse" sides of the triangle (Opposite and Adjacent).
Answer:
That is the pythagorean theorem.
Find the surface area of this triangular prisim.And pls expliane how you got that answer aswell pls.:)
Answer:
[tex]756^{2}[/tex]
Step-by-step explanation:
To get the area of the triangle sides, we use the formula [tex]\frac{bh}{2}[/tex]
In words, this is base · height ÷ 2
After using this formula we find the surface area of the triangle sides is 54
Of course because there are two sides, we do 54 + 54 = 108
For the base of the prism, we do 12 · 18, which equals 216
For the back, we do 9 · 18, which equals 162
For the top, we do 15 · 18, which equals 270
Now that we have the individual areas of all the faces, we add them together. Doing this, we get [tex]756^{2}[/tex]
In the problem 10-4=6 what’s the correct term for the number 4?
A. Product
B. Difference
C. Minuend
D. Subtrahend
Answer:
D. subtrahend
a quantity or number to be subtracted from another. so, 4 is the number which is to be subtracted from 10.
hope this answer helps you!
please mark this answer as the brainliest.. thank you!
What is the gradient of the line 3x + 2y=9
Answer:
slope : -3/2
Y=(0, 9/2)
Step-by-step explanation:
Which equation could represent the following:
5 less than a number is 8.
On - 5 = 8
0 5 - n = 8
On + 5 = 8
0 5 + n = 3
Answer:
n - 5 = 8
Step-by-step explanation:
5 less than a number = a number subtracted by 5
102 is what percent more than 50
Faye has $3,000 that she is going to deposit into each of the two accounts as shown:
•Account A: 5% simple interest for 5 years
•Account B: will earn $828.84 over 5 years
Assuming Faye does not make any additional deposits nor withdrawals, find t combined amount of her two accounts after 5 years.
Answer:
Faye has $3,000 that she is going to deposit into each of the two accounts as shown:
•Account A: 5% simple interest for 5 years
•Account B: will earn $828.84 over 5 years
Assuming Faye does not make any additional deposits nor withdrawals, find t combined amount of her two accounts after 5 years.
Step-by-step explanation:
sub to sir sir bmgo ΔΔ
I need help on this question please and thanks :)
Answer: a and b
Step-by-step explanation:
Answer:
a, b
Step-by-step explanation:
input, output = ordered pair
m = 3, y-int = 2
6.A random sample of 60 married couples who have been married 7 years was ask the number of children they have. You may assume requirements are satisfied.The results of the survey are as follow000333132231324033310233142313350230442232222343221432421232a.What is the shape of the distribution of the sample mean? Why?b.Compute a 95% confidence interval for the mean number of children of all couples who have been married for 7 years. Interpret the interval.c.Computer the 99% confidence interval for the mean number of childrenof all couples who have been married 7 years. Interpret the interval.
Answer:
(1.962 ; 2.578) ;
There is a 95% chance that the true population mean of the number of children of all couples who have been married for 7 years lies within the interval (1.962 ; 2.578);
(1.865 ; 2.675);
There is a 99% chance that the true population mean of the number of children of all couples who have been married for 7 years lies within the interval (1.8646 ; 2.6754)
Step-by-step explanation:
Given the data :
0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 5
Using calculator :
Mean, xbar = 2.27
Standard deviation, s = 1.219
Sample size = 60
Confidence interval :
Xbar ± Margin of error
Margin of Error = Zcritical * s/sqrt(n)
Zcritical at 95% = 1.96
Margin of Error = 1.96 * 1.219/ sqrt(60) = 0.3084
Lower boundary = (2.27 - 0.3084) = 1.962
Upper boundary = (2 27 + 0.3084) = 2.578
(1.962 ; 2.578)
There is a 95% chance that the true population mean of the number of children of all couples who have been married for 7 years lies within the interval (1.962 ; 2.578)
C.) 99% confidence interval :
Xbar ± Margin of error
Margin of Error = Zcritical * s/sqrt(n)
Zcritical at 99% = 2.576
Margin of Error = 2.576 * 1.219/ sqrt(60) = 0.4054
Lower boundary = (2.27 - 0.4054) = 1.8646
Upper boundary = (2.27 + 0.4054) = 2.6754
(1.865 ; 2.675)
There is a 99% chance that the true population mean of the number of children of all couples who have been married for 7 years lies within the interval (1.8646 ; 2.6754)
Please help no links or ill report
Step-by-step explanation:
the answer is 105
?=1/2(UJ+ST)arc
?=1/2(50+160)
?=1/2(210)
?=105
Which of the following best describes the algebraic expression 7(x-9) +14 ?
Answer:
Fourteen more than seven times the quantity of a number minus nine.
Step-by-step explanation:
Complete the table for the given rule.
Please help me and thank u, hope u all have a wonderful day!
Answer: 4= 2 8=3 12=4
Step-by-step explanation:
We see that 1/4 is the x, so we can multiply 4 by 1/4 which gives us 1 and then we add 1 because the equation has a +1. Now we do the same to the 8, 8(1/4 +1) =3.