The measure of the additional angle needed for Stephanie to get out is 50°.
To answer the question, we need to know what angles are
What are angles?Angles are a measure of rotation.
Since Stephanie needs to rotate the door 170° for her to pass through but then rotates it 105° and gets stuck, her friend then helps her push the door another 15°, but still not far enough.
The additional angle neededLet x be the additional angle needed.
So, x + 105° + 15° = 170°
x + 120° = 170°
x = 170° - 120°
x = 50°
So, the measure of the additional angle needed for Stephanie to get out is 50°.
Learn more about angles here:
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Answer:
Step-by-step explanation:
So, x + 105° + 15° = 170°
x + 120° = 170°
x = 170° - 120°
x = 50°
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
What is the pressure in atmospheres exerted by a 0.500 mole sample of nitrogen gas in a 10.0 L container at 25.0°C?
Answer:
1.2218 atm
Step-by-step explanation:
From ideal gas formula,
PV=nRT
Where n= number of moles
V= volume
T= temperature=25.0°C
= (273 + 25) = 298 K
R= gas constant = 0.082 l atm /K mol.
Making P subject of formula we have
P= [nRT] /V
Then substitute the values we have
P= [0.5 x 0.082 x 298] / 10
P= 1.2218 atm
Which choices are equivalent to the expression below? Check all that apply.
5^8/5^5
A. 5^ 8-5
B. 5^ 3
C. 13/10
D. 125
E. 5^ 5-8
F. 40/25
Answer:
Answer is option a,b and d.
Step-by-step explanation:
Property of exponents:
[tex] \frac{ {a}^{m} }{ {b}^{n} } = {a}^{m - n} [/tex]
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
What line is horizontal?
A. y = 2
B. y = 2x
C. y = -2x
D. y = x
Answer:
A. y = 2
Step-by-step explanation:
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)
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:
I PROMISE I'LL GIVE BRAINIEST
1+2x<9
Answer:
x<4
Step-by-step explanation:
1+2x<9
2x<8
x<4
There were twelve times more children than adults at the matinee performance of the school play. There were 455 people at the play. How many adults and children were there?
Answer:
35 adults, 420 children
Step-by-step explanation:
1. Set up variables
Let's say children is c and adults is a.
2. Create the equations
c = 12a AND c + a = 455
3. Plug in the variables
Let's take c = 12a and substitute it in for c in the equation "c + a = 455." That would be...
12a + a = 455
13a = 455
a = 35
3. Plug in more variables
Now we have our answer for a, so let's plug it into the other equation. That would be...
c + a = 455
c + 35 = 455
c = 420
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
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.
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]
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]
What function is the inverse of the exponential function y = 3^x?
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
help plz!!!!!!!!!!!!!!!!!
Answer:
B
Step-by-step explanation:
13x-9+4x+11+2x+7=180
19x+10=180
19x=170
x=8.95
m∠L=4x8.95+11=46.8≈47
A total of $8000 is invested: part at 8% and the remainder at 12%. How much is invested at each rate if the annual interest is $650?
Answer:
8% = $7750
12% = $250
Step-by-step explanation:
I P R. T.
8% X .08 .08X
12% 8000-X .12 .12(8000-X)
.08X + .12(8000-X) = 650
.08X + 960 - .12X = 650
-960 -960
.08x - .12x = -310
-.04x = -310
-.04x -.04x
X = 7750
Verify:
X = 7750
8000 - X = 250
250 + 7750 = 8000
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!
Which of the following given conditions will produce only ONE unique triangle?Immersive Reader
(2 Points)
Two given sides and a non-included angle (SSA)
Three given angles (AAA)
Three given sides (SSS)
Answer:
Three given sides (SSS)
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
can someone please explain the equation I am supposed to use
9514 1404 393
Answer:
MLN1 : 3Step-by-step explanation:
There are several ways you can go at this. Perhaps the most complicated is using the distance formula to determine the various ratios. Since all of the points are on the same line segment, I find it easier just to consider the x-coordinate differences. (The length of PQ is Q - P for the purposes here.)
For x-coordinates only, ...
L -A = -1 -(-3) = 2
M -A = 0 -(-3) = 3
N -A = 1 -(-3) = 4
Z -A = 3 -(-3) = 6
Note that the corresponding distances from Z are ...
Z -L = 3 -(-1) = 4
Z -M = 3 -0 = 3
Z -N = 3 -1 = 2
Then the ratios are ...
AL : LZ = 2 : 4 = 1 : 2 . . . . . partitioning by point L
AM : MZ = 3 : 3 = 1 : 1 . . . . partitioning by point M
AN : NZ = 4 : 2 = 2 : 1 . . . . partitioning by point N
AL : AZ = 2 : 6 = 1 : 3 . . . . partitioning by L expressed differently
__
Now we have what we need to answer the questions.
Point M partitions into 1 : 1
Point L partitions into 1 : 2
Point N partitions into 2 : 1
AL : AZ = 1 : 3
Can someone help me with this guys? Thank you so much! I mark as brainliest
Answer:
y=45
x=9
z= 9 root 2
Step-by-step explanation:
This is a right isosceles triangle, so
y=45
x=9
z= 9 root 2
9²+9²=z²
81+81=z²
162=z²
√162=z
z=9√2
Simplify the expression 6−2+5+4.
A triangle has side lengths of (10x + 7y) centimeters, (3x + 3z) centimeters, and (8z +10y) centimeters. Which expression represents the perimeter, in centimeter of the triangle?
a:20yz+21xz
b:13x+10y+18z
c:6xz+18yz+17xy
d:13x+17y+11z
Answer:
(D) 13x + 17y + 11z
is right answer
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:
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.
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:
What is equivalent to 3.2%? Select all the right answers.
Answer:
3.2%; 3.2/100; 32/1000; 0.0032
Step-by-step explanation:
Given
[tex]3.2\%[/tex]
Required
Select all equivalents
First, we have:
[tex]Number = 3.2\%[/tex]
Express as fraction
[tex]Number = \frac{3.2}{100}[/tex] ---- this is an equivalent
Multiply the fraction by 10/10
[tex]Number = \frac{3.2*10}{100*10}[/tex]
[tex]Number = \frac{32}{1000}[/tex] --- this is also an equivalent
Express as decimal
[tex]Number = 0.0032[/tex] --- this is also an equivalent