Does the orientation change in quadrilateral
ABCD to A'B'C'D'? when reflected?
A.)Yes, and it is reflected over the x-axis
B.) yes , and it is reflected over the y-axis
Answer:
b
Step-by-step explanation:
i have had this before
The coordinates of the vertices of a polygon are (1, 2), (1,-1).(-6, -1), and (-6, 2).
What is the perimeter of the polygon?
A. 10 units
B. 14 units
C. 18 units
D. 20 units
The answer is D. 20 units
Answer:
20 units
Step-by-step explanation:
(31 points) Wilson County School District consists of 2,548 students. The district decided to conduct a survey regarding their new dress code policy. Wilson County School District surveyed 479 of their students and found that 42% of those surveyed disliked the new dress code policy. What is the margin of error, assuming a 95% confidence level?
Answer:
+ or - 0.044
Step-by-step explanation:
The margin of error is 0.044.
What is a Margin of Error?A Margin of Error is defined as the results will vary from the actual population value by how many percentage points, as indicated by the margin of error.
The margin of error using this formula, where z is the critical value.
[tex]ME = z\sqrt{\dfrac{T(1 - t)}{n} }[/tex]
To determine a margin of error for a sample proportion,
Where n is the sample size and is the sample proportion, these assumptions must be true.
n t ≥ 10
n(1 - t) ≥ 10
Write the proportion of lead to significant as a decimal number first,
42%
= 0.42
Now substitute the sample proportion and the sample size, 479, the assumptions are inserted into the equations to see if they are satisfied.
⇒(479X0.42) 201.18
⇒ (479)(1 − 0.42)
⇒ 277.82
Both values are greater than 10, so the assumptions are satisfied, and the margin of error can be calculated.
Determine the margin of error using this formula, where z is the critical value.
[tex]ME = z\sqrt{\dfrac{T(1 - t)}{n} }[/tex]
For a 95% confidence level, z = 1.96.
Substitute the values of z, n, and T into the formula for margin of error and evaluate.
[tex]ME = 1.96\sqrt{\dfrac{0.42(1 - (10.42)}{479} }[/tex]
ME ≈ 0.044
Hence, the margin of error is 0.044.
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The side lengths of a 45-45-90 triangle are in the ratio 1 : 1 : SR2 what is tan 45?
SR= square root
Answer:
Step-by-step explanation:
tan 45=1/1=1
Tan Theta is one of the trigonometric ratios which is equal to opposite / Adjacent in a triangle, the value of tan45 is 1.
What is the 45-45-90 triangle?The 45-45-90 triangle is also an isosceles triangle, which means its two legs are equal in length.
Tan Theta is one of the trigonometric ratios which is equal to opposite / Adjacent in a triangle.
The side lengths of a 45-45-90 triangle are in the ratio 1: 1: [tex]\sqrt{2}[/tex].
The value of tan45 is given by the following formula;
[tex]\rm Tan 45 = \dfrac{Perpendicular}{Base}\\\\Tan45=\dfrac{1}{1}\\\\Tan45=1[/tex]
Hence, the value of tan45 is 1.
Learn more about trigonometry here;
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Which of the following equations is used to calculate the probability of event A happening, given that event B has occurred?
Answer:
B
Step-by-step explanation:
Not much to explain
ALGEBRA 1 / GRAPHING
Answer:
first and third from up to down
Step-by-step explanation:
you use a dashed line if the inequality does not have an equal so is just > or <
HELP ASAP!! Find the total area of the figure below. Round your answer to the nearest tenth
Answer:
area = 88 mi²
Step-by-step explanation:
all vertical dimensions = 8/2 = 4 mi
area = (4 x 11.9) +(4 x 6.1) + (4 x 4) = 88 mi²
Help! this is very hard for me and i need help . Thank you!
Answer:
B
Step-by-step explanation:
the volume formula is πr^2(h), so plug in the 4 and 9 you would get 452.16
A bag contains 5 blue marbles, 8 green marbles, and 11 red marbles. What is the probabilty of choosing a green marble?
Answer:
1/3
Step-by-step explanation:
You add the marbles up and you get 24, now divide by 8 and you get 3. Which is equal to a 1/3 chance of getting the green marble.
Correct I’ll give brainlist no links or I’ll report
Answer:
y = 8x - 64
Step-by-step explanation:
Start with y = mx + b, the slope-intercept equation. Replace m with 8, x with 7 and y with -8:
-8 = 8(7) + b, or
-8 - 56 + b, or
b = -64
Then the desired equation is
y = 8x - 64
how many triangles are there
*image insert here*
What is the length of the arc shown in red?
Answer:
≈ 18.8 cm
Step-by-step explanation:
The arc length is calculated as
arc = circumference of circle × fraction of circle
The central angle is equal to the arc subtending it, that is 60°
arc = 2πr × [tex]\frac{60}{360}[/tex]
= 2π × 18 × [tex]\frac{1}{6}[/tex]
= 36π × [tex]\frac{1}{6}[/tex]
= 6π ≈ 18.8 cm ( to 1 dec. place )
in a group of 52 cards, how many different groups of 5 cards can you be dealt?
Answer:
10
Step-by-step explanation:
50 divided by 5 = 10 and the extra 2 are left out because we are finding how many groups of 5 we can get.
2 x 6/7
SEND HELP!!!!!!!!!!!
Answer: C. 2 6/7
Hope that helped! :)
Which survey question is biased?
A. "Should the President of the United States serve a six-year term?"
B. "Which meal-breakfast, lunch, or dinner-is your favorite meal of the day?"
C. “During which month do you prefer to go on vacation?"
D. “Do you prefer white bread or healthy, whole-wheat bread?”
Answer:
A.
Step-by-step explanation:
It was trick question because they all are opinionated, but the first one should be an easy yes or no question. However, if you do not like the president then you would say no because of bias. The rest are supposed to be "biased" because they are asking what you prefer.
"Should the President of the United States serve a six-year term?" is question is biased
What is Survey bias?Survey bias is a "systematic error introduced into sampling or testing by selecting or encouraging one outcome or answer over others." Due to this "encouragement" for a particular result, surveys may be biassed and only provide one type of consumer perspective.
For first, It presumes that the responder supports the idea that the President should hold office for a six-year term, which may not apply to all respondents.
However, out of bias, you would say "no" if you didn't like the president. The others are supposedly "biassed" since they inquire about your preferences.
Thus, the biased question is Should the President of the United States serve a six-year term?.
Learn more about Survey bias here:
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3x+2y=12 2x-3y=21 elimination please solve with answer and steps
Answer:
(6,-3)
or
x=6 y= -3
Step-by-step explanation:
Taking a quick look at this question we notice that we simply cannot add/subtract the two equations and eliminate a variable
What we can do is mulitply an equation to make the above true
let's try to get the first equation to have a 3y, and we can do this by multiplying it by 1.5 (this is legal because we do it to both sides)
So our new first equation is
1.5(3x+2y)=12*1.5
which simplifies to
4.5x+3y=18
We then add the two equatiosn
(4.5x+3y)+(2x-3y)=18+21
6.5x=39
x=6
Now that we know x we can plug that in and solve for y
3(6)+2y=12
18+2y=12
-6=2y
y= -3
PLEASE HELP, I WILL MARK BRAINLIEST!
Answer:
5
Step-by-step explanation:
There are 5 different segments.
10.
C =
= ✓ [?]
11
С
Find the
missing length.
Pythagorean Theorem: a2 + b2 = c2
Answer:
Your answer is [tex]\sqrt 221[/tex]
Step-by-step explanation:
[tex]10^2+11^2=c^2\\100+121=221\\c=\sqrt{221}[/tex]
Hope this helps!
Fill in the blank.
2. The volume of a cone is _____ the volume of a cylinder with the same base and height.
The volume of a cone is three times the volume of a cylinder with the same base and height.
Step-by-step explanation:
the volume of a cone is equal toone-third of the volume of a cylinderhaving the same base radius and height
Help!!!!!!!!!! I need it asap
Answer:
(-4,3)
Step-by-step explanation:
I used photo math
An insurance company sells a twenty-year term life insurance policy with a face value of $200,000 to a 45-year old woman. Her annual premium is
$990. If the woman dies after paying premiums for six years, what is the insurance company's gain or loss?
A. loss of $194,060
B. loss of $199,010
C. gain of $200,990
D. gain of $205,940
Answer:
her loss of $194,050 because it decreasing every time i think.
Step-by-step explanation:
answer a first one
1 is subtracted from the division of a number and 9. The result is -2.
Answer:
The number is - 9.
Step-by-step explanation:
(y ÷ 9) - 1 = - 2
(y ÷ 9) - 1 + 1 = - 2 + 1
y ÷ 9 = - 1
y ÷ 9 × 9 = - 1 × 9
y = - 9
please do this <33333
We know that,
In a right-angled triangle,
Hypotenuse ² = Base ² + Height ²
1 – 10 ² = 6 ² + X ²
Or, X ² = 10 ² – 6 ²
Or, X ² = 100 – 36
Or, X ² = 64
Or, X = √ 64
Or, X = 8 Units
2– X² = 7² + 3²
Or, X² = 49 + 9
Or, X² = 58
Or, X = √58
Or, X = 7.61 Units ( Approx )
3 – 15 ² = EF ² + 9
Or, EF² = 15 ² – 9 ²
Or, EF ² = 225 – 91
Or, EF ² = 134
Or, EF = √ 134
Or, EF = 11.6 Inches ( Approx)
.II} 1 – Here the length of the ladder will be the hypotenuse.
Hence, Hypotenuse = 13 Metre
.Now, The vertical wall will be the height.
Hence, Height = 12 Metre
Distance of the foot of the ladder to the wall will be the base.
Let base be B.
Now, Hypotenuse ² = Base ² + Height ²
Or, 13² = B² + 12²
Or, B² = 13² – 12²
Or, B² = 169 – 144
Or, B² = 25
Or, B = √25
Or, B = 5 Metre
Hence, the distance of the foot of the ladder from the wall is 5 metre apart.
Helpp pretty please
Answer:
b
Step-by-step explanation:
What is the slope of the line?
pleaseeee help
Write the following expression using a single exponent. 4^6 ÷ 4^-2
Answer:
4^8.
Step-by-step explanation:
4^6 ÷ 4^-2 when dividing we subtract exponents , so we have:
4^(6- (-2))
= 4^8.
Jared made 4 bird houses in 3 days. How many days will Jared work to make 20 bird houses.
Answer:
15 days.
Step-by-step explanation:
1 person : 4 bird houses : 3 days
1 person : 20 bird houses : ? days
from 4 bird houses to 20 bird houses, you multiply by 5.
this means you also have to multiply the days by 5
3*5=15
Jared will have to work for 15 days to make 20 bird houses.
Find the diagonal of a television screen 30 inches wide by 35 inches tall.
Round answer to the nearest tenth (if necessary).
Answer:
46.1 in
Step-by-step explanation:
Given data
Width= 30in
Height= 35in
To find the diagonal, we have to use the Pythagoras theorem
z^2= x^2+y^2
z^2= 30^2+ 35^2
z^2= 900+1225
z^2= 2125
z= √2125
z= 46.09
Hence the diagonal of the TV is 46.1 in
write the equation of the line that passes through the points (-9,-5) and (-2,3). Put your answer in fully reduced point-slope form, unless it is a vertical or horizontal line.
(no links please)
Answer:
y= 8/7x+ 37/7 for the equation that the line passes
Answer:
y+5=8/7(x+9)
Step-by-step explanation:
help me w this plssss
Answer:
It is none of the above. The actual answer is 215
Step-by-step explanation:
8.6*50/2=215
Answer:
none of these
Step-by-step explanation:
on map 8.6 cm
scale 2cm: 50mi.
on reality if you divide the 8.5 cm into 2 cm portions and for each you have 50 mi. then you get the result
(8.6 /2)*50 = 215 mi.