Answer: [tex]=(29.1596\text{ degrees},\ 30.2404\text{ degrees})[/tex]
Step-by-step explanation:
Given: Sample size: n = 41
Sample mean [tex]\overline{x}= 29.7[/tex] degrees
Population standard deviation [tex]\sigma=2.7[/tex] degrees
Confidence level (c) = 80% =0.80
Significance level (a) = 1- c = 1-0.80 = 0.20
z-score for 80% confidence level : z = 1.2816 [from z-table]
Confidence level for population mean :-
[tex]\overline{x}\pm z\dfrac{\sigma}{\sqrt{n}}[/tex]
[tex]=29.7\pm ( 1.2816)\dfrac{2.7}{\sqrt{41}}[/tex]
[tex]=29.7\pm ( 1.2816)\dfrac{2.7}{6.403124}[/tex]
[tex]=29.7\pm ( 1.2816)(0.42167)[/tex]
[tex]=29.7\pm 0.5404[/tex]
[tex]=(29.7-0.5404,\ 29.7+0.5404)[/tex]
[tex]=(29.1596,\ 30.2404)[/tex]
Hence, 80% confidence interval for the temperatures in the freezer [tex]=(29.1596\text{ degrees},\ 30.2404\text{ degrees})[/tex]
Please help I keep on watching the vids but I’m not understanding
Answer:
3053.63 yd^3
Step-by-step explanation:
There is a formula to this, the formula goes,V=4/3πr^3, you subsitute, 9 in for r, cube "r", and do 9*3.14 or whatever you use for PI, and then you times that by 4/3.
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Answer:
Step-by-step explanation:
OwO
thx for the points I guess
I need help with this one please
Answer:
1. d) = g)
(3x - 2)(9x² + 6x + 4) = 27x³ - 8
2. e) = f)
(3x + 5) (3x - 4) = 9x² + 3x - 20
3. b) = h)
9x² - 24xy + 16y² = (3x - 4y)²
Step-by-step explanation:
From the above question, we are to find the pairs through expansion or factorisation
a) (3x + 2)(9x² - 6x + 4)
b) 9x² - 24xy + 16y²
c) (4x - 3y)²
d) (3x - 2)(9x² + 6x + 4)
e) (3x + 5) (3x - 4)
f) 9x² + 3x - 20
g) 27x³ - 8
h) (3x - 4y)²
a) (3x + 2)(9x² - 6x + 4)
We expand.
3x(9x² - 6x + 4) + 2(9x² - 6x + 4)
27x³ - 18x² + 12x + 18x² - 12x + 8
27x³ - 18x² + 18x² + 12x - 12x + 8
= 27x³ + 8
c) (4x - 3y)²
We expand
(4x - 3y) (4x - 3y)
4x(4x - 3y) - 3y ( 4x - 3y)
16x² - 12xy - 12xy + 9y²
16x² - 24xy + 9y²
d) (3x - 2)(9x² + 6x + 4)
We expand
3x(9x² + 6x + 4) - 2(9x² + 6x + 4)
27x³ + 18x² + 12x - 18x² - 12x - 8
27x³ - 18x² + 18x² + 12x - 12x - 8
= 27x³- 8
e) (3x + 5) (3x - 4)
We expand
3x(3x- 4) +5(3x - 4)
9x² - 12x + 15x - 20
9x² +3x - 20
h) (3x - 4y)²
We expand
(3x - 4y) ( 3x - 4y)
3x(3x - 4y) -4y(3x - 4y)
9x² - 12xy - 12xy - 16y²
9x² - 24xy - 16y²
Hence:
1. d) = g)
(3x - 2)(9x² + 6x + 4) = 27x³ - 8
2. e) = f)
(3x + 5) (3x - 4) = 9x² + 3x - 20
3) b) = h)
9x² - 24xy + 16y² = (3x - 4y)²
Please solve and explain the two problems.
Answer/Step-by-step explanation:
If two triangles are similar, their corresponding angles would be of equal measure of degree.
8. The 3rd angle of the smaller ∆ is x = 76°, while that of the larger ∆ is y = 44°. As we can see, the corresponding angles of both ∆s are not congruent or equal to each other. Therefore they ARE NOT SIMILAR.
9. x = 43°, while y = 106°.
Both triangles have corresponding angles that are congruent to each other.
Therefore, both triangles ARE SIMILAR.
i will give you brainliest and give you 50 point if you help me
Answer:
10:16
Step-by-step explanation:
If there are 16 total animals and 10 of them are racoons, then 6 are squirrels which makes them 10:6 ratio.
(BTW I LOVE UR BAKUGOU PFP)
Answer:
the answer will be 10:16
Step-by-step explanation:
Mr. Dey took out Rs.5000 from his bank. He took 40 notes of 50 Rupees each and the remaining amount in 20 Rupees notes. How many 20 Rupees notes did he take? *
Answer:
150
Step-by-step explanation:
Start with Rs.5000.
40 notes of 50 Rupees each = 40 * Rs.50 = Rs.2000
Rs.5000 - Rs.2000 = Rs.3000
He took Rs.3000 in 20 Rupees notes.
Rs.3000/Rs.20 = 150
Answer: He took 150 20-Rupee notes
Answer:
150
Step-by-step explanation:
We know that he took out Rs.5000 from the bank and that he took 40 of the 50 Rupees notes. We have to subtract to find the amount he took in 20 Rupees notes and then divide by 20 to find the number. 40*50 = 2000 and 5000 - 2000 = 3000. After that, 3000/20 = 150, so that means that Mr. Dey took out 150 notes of 20 rupees.
Which expression is a possible leading term for the polynomial function graphed below?
8
4
2
2
0.48
O _4,5
O4x5
o 4x
Answer:
Answer is (A) -4x^8
Step-by-step explanation:
Solve this 40 pointsssss
Answer:
2
Step-by-step explanation:
Answer:
6 because the pattern on the 3 rows is remove 1 on each of the starting and end point of the pattern, therefore, 6 for the 4th row, 4 for the 5th row 2 for the last row
The ratio of apples to oranges in the fruit bowl is 1: 9 in the small bowl. If the extra large bowl has 40 fruit in total. How many are oranges?
how much is left from 50 after buying 3 books at $
12.65 each
Answer:$12.05
Step-by-step explanation:
12.65*3=$37.95
$50-$37.95=$12.05
PLEAS HELP ME!!!!!!!!!!!!!!!!Use a unit rate to find the unknown value.
52/13, 12/?
Answer:
1. 40/8 = 45/9
2. 42/14 = 15/5
3. 14/2 = 56/8
4. 8/4 = 26/13
Step-by-step explanation:
how can you isolate the varible f
Answer:
Step-by-step explanation:
The basic technique to isolate a variable is to “do something to both sides” of the equation, such as add, subtract, multiply, or divide both sides of the equation by the same number. By repeating this process, we can get the variable isolated on one side of the equation.
simplify the problem:
-4/5+3/10
Answer:
-1/2
Lcd=10
-4x2/5x2+3/10
−
10
8
+
10
3
−8+3/10
-5/10
-1/2
pleas help u get 16 points and brainy. find the area
Answer:
153 in²
Step-by-step explanation:
first look at yellow area, then red area, then green area.
48 + 50 + 55 = 105 + 48 = 153 in²
hope this helps ^-^
Please help me with this problem
1. $5,876 are distributed equally among 26 men. How much money will each person get?
Answer:
226
Step-by-step explanation:
Since the total is $5,876 you want to divide by the number of people 26 to equally split the money.
$5,876/26=226
find x using the ratio of the sides 12 cm and 16cm
Answer:
the ratio of the following x is 3/4
n a science experiment, the initial temperature was 55 degrees Fahrenheit, and each hour after, the temperature dropped by 4 degrees. Which expression represents the temperature, in degrees Fahrenheit, after t hours?
Answer:
f(t) = 55 = 4t
Step-by-step explanation:
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
B
Step-by-step explanation:
By multiplying all x values by a -, you are reflecting across the y axis
give thanks by clicking heart :)
the equation d= 2/5 t describes the distance d, in yards, an object travels in t minutes. How long does it take the object to travel 1 4/5 yards?
Answer:
t = 4.5
Step-by-step explanation:
1.8 = 0.4(t) solve for t
-5 1/4 - (-7 1/2) Simplify, help asap
Answer:
2 1/4
Step-by-step explanation:
Answer:
2.25
Step-by-step explanation:
1/3 x (21.69 – 24.99)
Answer:
I think it might be 0.30
Step-by-step explanation:
Evaluate if a = 6, b = 2, c = 9, & d = 3
Answer:
12
Step-by-step explanation:
a2 b
( )2 ( )
(–2)2 (3)
(4)(3)
Antonio completed the right column of the table to help him find the sum of 2/9 and 1/5.
Answer:
Step 1 is the first error
Step-by-step explanation:
Given
[tex]\frac{2}{9} + \frac{1}{5}[/tex]
Required
Which step contains the first error?
From the attachment, the first step is the first error.
This is so because the fractions can not be written as a fraction with a denominator of 14
Solving further:
[tex]\frac{2}{9} + \frac{1}{5}[/tex]
Find Common Denominator 45
[tex]\frac{2*5}{9*5} + \frac{1*9}{5*9}[/tex]
[tex]\frac{10}{45} + \frac{9}{45}[/tex]
Add:
[tex]\frac{10 + 9}{45}[/tex]
[tex]\frac{19}{45}[/tex]
Describe how to find the inverse of the function.
To find the inverse of the function, change f(x) to y, switch and y, and solve for . The resulting function can be written as , where .
1st box: x
2nd box: y
3rd box: 3
4th box: 0
A researcher wants to know how business owners in her state feel about employee healthcare coverage. She obtains a list of 2386 business owners in her state, selects 800 of them at random, and emails a questionnaire to them. 171 questionnaires are returned Of these, 77% stated that they believe that the current employee healthcare coverage mandate needs to be completely overhauled. Classify the following groups as the population or the sample for this particular study. If a group does not belong in either category, leave it unplaced. Population Sample Answer Bank the 171 business owners who returned the questionnaire the proportion of all business owners in he researchers state who believe hat he curren en o ee he care c еґа e mandate eeds to be completely overhauled all business owners in the researcher's state all business owners the 800 business owners who were randomly chosen the 2386 business owners whose names were obtained the 77% who stated that the current employee healthcare coverage mandate needs to be completely overhauled
Answer:
Classification of groups as the population or the sample:
Population:
the 2386 business owners whose names were obtained
Sample:
the 800 business owners who were randomly chosen
Step-by-step explanation:
The population in research is the comprehensive group with common characteristics, which the researcher is interested in studying. The sample is a subset or a representative of the common group, which the researcher selects to study. The sample is, therefore, a part of the population.
an art teacher has a total of 7/8 pounds of clay .the teacher puts 1/16 of clay at each station .how many stations would there be .
Answer:
i think there would be 14 stations
Step-by-step explanation:
sorry f i am wrong
i did 7/8/ 1/16
7/8 * 16/1 =14
Answer:
14
Step-by-step explanation:
7/8 divided by 1/16 becomes 7/8 multiplied by 1/16, which equals 14
Which expression is equivalent to
2.2
−
2.5
2.2−2.5?
A
2.5−2.22.5−2.2
B
2.2+2.52.2+2.5
C
2.2+(−2.5)2.2+(
−
2.5)
D
2.2−(−2.5)2.2−(
−
2.5)
Answer:
The answer is = A
Step-by-step explanation:
Hope it's answer you plz mark as Brainlist
Two adjacent sides of a parallelogram are 7cm and 10cm respectively.Find its perimeter
Answer:
Step-by-step explanation:
Perimeter=2(10+7)
=2(17)
=34cm
which list orders the number from least to greatest
Answer:
Option C
-5, -2, 1, 3
Step-by-step explanation:
to get the list that orders the numbers from the least to the greatest, we need to, first of all, know the smallest and the largest numbers.
The largest number is easy to guess - it is undoubtedly 3.
However, the smallest number may be a bit tricky because we are dealing with negative numbers. When dealing with negative numbers, the numbers with greater magnitudes are actually smaller. This means that -5 is less than -3, which is less than -2, and so on.
Coming back to our question, we can now order the numbers as -5, -2, 1, 3 which is option C
