Answer:
Following are the solution to the given question:
Step-by-step explanation:
[tex]95\%[/tex] Confidence Interval for both the percentage of all x-ray machines
p = the machinery's share is not working:
[tex]= \frac{228}{275}\\\\ = 0.829[/tex]
[tex]\text{Margin of Error} = Z_{(\frac{\alpha}{2})} \times \sqrt{( p \times (1-p)}{n})[/tex]
[tex]= 1.96 \times \sqrt{(0.829 \times \frac{0.171}{275})} \\\\= 1.96 \times 0.023 \\\\= 0.045[/tex]
Lower [tex]95\%[/tex] Confidence interval = p - error margin [tex]= 0.829 - 0.045 = 0.784[/tex]
Upper [tex]95\%[/tex] Confidence Interval = p + error margin[tex]= 0.829 + 0.045 = 0.874[/tex]
So, [tex]95\%[/tex] Confidence Interval [tex]= ( 0.78 , 0.87 )[/tex]
Find the value of cos W rounded to the nearest hundredth, if necessary,
U
30
W
V
14
Answer:
cos W = 7/15
Step-by-step explanation:
Mathematically the cosine of an angle is the ratio of the adjacent to the hypotenuse side
From the diagram given, 14 is adjacent to vertex w and 30 faces the right angle which makes it the hypotenuse
So, we have it that;
cos W = 14/30
cos W = 7/15
To install the right size heating and cooling system, you must know how many cubic feet an office building contains. The building is 120 feet wide, 20 feet high, and 48 feet long. What is the volume?
Answer:
115,200 feet³
Step-by-step explanation:
volume of the building = volume of a cuboid
volume of a cuboid = length x width x height
120 x 20 x 48 = 115,200 feet³
PLS HELP ITS TIMED!!!
The number of daily customers at the Good Eats Diner for one week was 70, 68, 110, 65, 90, 125, and 105. What is the standard deviation of the data?
A. 21.9
B. 25
C. 90
D. 90.4
Answer:
it would be A
Step-by-step explanation:
Answer:
B
is the correct answer dear
What term must go in the space to complete the statement
Answer:
5v+35 = 5(v+7)
Step-by-step explanation:
5(v+7) = 5v+35
Answer:
5
Step-by-step explanation:
Because
5(v+7)
5v+35..
hope it helps
The equation y 55x represents the
relationship between x, the time that a train
travels in hours, and y, the distance the train
travels in miles for Train A. The table
represents the relationship for Train B.
Determine which train is traveling at a faster
rate of speed.
1
2
4
Time (h)
Distance (mi)
45
90
135
180
Answer:
Train A is travelling faster.
Step-by-step explanation:
Train A is going 55mph, and train B is going 45mph according to the table.
315,728 rouned to the nearest ten thousand
Answer:
320,000 is the answer
Step-by-step explanation:
have a good day!!
Solve the formula d = rt for r.
Robert is selling his bulldozer at a heavy equipment auction. The auction company receives a commission of 5% of the selling price. If Robert owes $124,850 on the bulldozer, then what must the bulldozer sell for in order for him to be able to pay it off?
Answer:
$131422
Step-by-step explanation:
Given :
Amount owed = $124,850
Commison on sale = 5%
Let :
Sale price of bulldozer = x
Sale price = amount owed + 5% of sale price
x = 124850 + 0.05*x
x = 124850 + 0.05x
x - 0.05x = 124850
0.95x = 124850
x = 124850 / 0.95
x = 131421.05263
To the nearest dollar = $131422
Which correlation coefficient would indicate a strong negative correlation? a. r = -0.93 b. r = -0.23 c. r = 0.75 d. r = 1.0
Answer:
A. r = -0.93
Step-by-step explanation:
First, if there is a negative correlation, the correlation coefficient will be negative.
This eliminates answer choices C and D, which are positive.
If there is a strong correlation, the correlation coefficient will be closer to 1, or -1 (since the correlation is negative).
Since -0.93 is closer than -0.23 to 1, it has a stronger correlation.
So, the correct answer is A. r = -0.93
Line is defined as a ______________________ a. a geometric shape that is open and moves from one point to another. b. a slowly curving path along a plane. c. a path through space. d. The distance or area between,around,above,below,and within objects. Please select the best answer from the choices provided A B C D Mark this and return
Answer:
i think it's a. Not so sure though
Answer:
option C
Step-by-step explanation:
Line is defined as a path through space.
tan150 cos135 cos100÷sin585 cos150 sin170
Answer:
-0.66
Step-by-step explanation:
use the calculator
Find the measure of angle A (*find the value of x first!):
Answer:
A = 90º
x = 22.5º
Step-by-step explanation:
So, because sides AC and AB are equal, angles C and B are equal- that means that angle B is also 2x. So for our whole triangle, 2x + 2x + 4x = 180º (all triangles internal angles add up to 180º).
From there, we can simply solve for x:
8x = 180º
x = 22.5
And now we can solve for angle A, which is 4xº. When we substitute it is:
4 (22.5)
A = 90º
convert 5.764764764 to a rational expression
Answer: 5 and 764 over 999
5764 over 9999
5 and 764 over 99
5 and 999 over 764
Step-by-step explanation:
- 4x < 68
A. Solve by adding 4 to each side.
B. The solution is x>-17.
a or b will mark as brainliest
(ignore the last thing)
Answer:
B.x>-17
Step-by-step explanation:
1. Divide both sides by -4:
-4x/-4<68/-4
2.< will change to > since you are dividing by negative
3.your final answer will be x>-17
Which of the following show the factored equivalent form of f(x) = (-24x2 - 68x + 12(x+7) and its zeros?
Answer:
The answer is B
Step-by-step explanation:
A simple lottery involves a player picking 2 counters from a bag that has 20 counters numbered 1-20. To win a player has to pick, without replacement 2 counters over 15. What is the probability of a player only picking 1 counter over 15.
Use a probability tree
Answer:
5
Step-by-step explanation:
Please help!! I'm in summer school and I can't fail
Answer and Step-by-step explanation:
The slope would be positive 1. (Third answer choice).
This is because, using the Rise over Run method of finding slope, we go 1 unit up and 1 unit to the right, showing that it is going in the positive direction (up and right) and has a slope of 1.
#teamtrees #PAW (Plant And Water)
I've been stuck on this one for a while. Help pls?
Answer: 1080 cm2
Step-by-step explanation: 9x10= 90| 90x12= 1080 cm2
a=8 and b=2.25 but what is k
Answer:
a = 8, b = 2.25, k = 27Step-by-step explanation:
y = abˣPoints on the graph:
(0, 8), (1, 18), (1.5, k)Substitute coordinates into equation and solve for and and b:
8 = ab⁰ ⇒ 8 = a*1 ⇒ a = 818 = 8b ⇒ b = 18/8 ⇒ b = 2.25Find k:
k = 8*[tex]2.25^{1.5}[/tex] = 27Answer:
a=8
b=9/4
k = 27
Step-by-step explanation:
y = ab^x
We know that a is the initial value or when x = 0
We know the point (0,8) so a = 8
y = 8 b^x
Using the point (1,18) for x and y we can find b
18 = 8 * b^1
18/8 = b
9/4 = b
Now
y = 8 * ( 9/4) ^ x
Letting x = 1.5
k = 8 *(9/4)^1.5
k = 27
Exercise 4
Use the pi button on a calculator and give answers to 3's.f.
1. A circle has an area of 15 cm². Find its radius.
2
a
->
2. A circle has a circumference of 190 m. Find its radius.
3. Find the radius of a circle of area 22 km².
4. Find the radius of a circle of circumference 58.6 cm.
5. A circle has an area of 16 mm². Find its circumference.
6. A circle has a circumference of 2500 km. Find its area.
Answer:
1. 2.19 cm
2. 30.2m
3. 2.65 cm
4. 9.33cm
5. 14.2 mm
6.497000km²
Step-by-step explanation:
Use the pi button on a calculator and give answers to 3's.f.
1. A circle has an area of 15 cm². Find its radius.
Area of a circle = πr²
15cm² = π × r²
r² = 15cm²/π
r² = 4.7746482927568605
r = √(4.7746482927568605)
r = 2.1850968612 cm
Approximately to 3 s.f ≈ 2.19 cm
2. A circle has a circumference of 190 m. Find its radius.
The circumference of a circle = 2πr
C = 190m
Hence:
190m = 2πr
r = 190m/2π
r = 30.239439187m
Approximately to 3 s.f = 30.2m
3. Find the radius of a circle of area 22 km².
Area of a circle = πr²
22km² = π × r²
r² = 22km²/π
r² = 7.002817496
r = √(7.002817496)
r = 2.6462837142 cm
Approximately to 3 s.f ≈ 2.65 cm
4. Find the radius of a circle of circumference 58.6 cm.
The circumference of a circle = 2πr
C = 58.6cm
Hence:
58.6cm = 2πr
r = 58.6cm/2π
r = 9.3264796652cm
Approximately to 3 s.f = 9.33cm
5. A circle has an area of 16 mm². Find its circumference.
Step 1
Find the radius
Area of a circle = πr²
16 mm² = π × r²
r² = 16 mm²/π
r² = 5.092958178940651
r = √(5.092958178940651)
r = 2.2567583342mm
Circumference of a circle = 2πr
Circumference = 2 × π × 2.2567583342
= 14.179630807mm
Approximately to 3 s.f ≈ 14.2 mm
6. A circle has a circumference of 2500 km. Find its area.
Step 1
Find the radius
The circumference of a circle = 2πr
C = 2500km
Hence:
2500km = 2πr
r = 2500km/2π
r = 397.88735773km
Area of a circle = πr²
Area of the circle = π ×(397.88735773km)²
Area of the circle = 497359.19716km²
Approximately to 3 s.f = 497000km²
Does anyone know? Sorry I forgot.
Answer:
Choice D: 6 - r - 6 = - 24 - 6
Step-by-step explanation:
Equation is that sum of 6 and r is -24.
Thus;
6 + (-r) = - 24
6 - r = - 24
To isolate r in this equation, we will subtract 6 from both sides to get;
6 - r - 6 = - 24 - 6
Thus,option D is correct
help pls i beg youuu
Answer:
height = 10 m
Step-by-step explanation:
base area of rectangular pyramid =180 m^2
volume of rectangular pyramid = lwh/3
600 = 180*h/3
600*3 = 180*h
1800/180 =h
10 = h
Answer:
I think the answer to the question is 10
Can somebody answer this for me I don’t get it and please explain it please, Thank you
Answer:
120 minutes
Step-by-step explanation:
1/4=0.25
96x 0.25= 24
96+24=120 minutes
Hi there!
»»————- ★ ————-««
I believe your answer is:
Two Hours
»»————- ★ ————-««
Here’s why:
Jordan is staying the duration of the movie and the previews. The previews are (1/4) the time of the movie, which is 96 minutes.⸻⸻⸻⸻
[tex]96*\frac{1}{4}= 24[/tex]
⸻⸻⸻⸻
The previews should be 24 minutes.
⸻⸻⸻⸻
[tex]24 + 96 = 120[/tex]
⸻⸻⸻⸻
Jordan should stay for 120 minutes, or two hours.
»»————- ★ ————-««
Hope this helps you. I apologize if it’s incorrect.
The summit elevation of a volcano is the elevation of the top of the volcano relative to sea level. The summit elevation of the volcano Kliauea in Hawaii is 1227 meters. The summit elevation of the underwater volcano Loihi in the Pacific Ocean is -969 meters. Which summit is closer to sea level?
Answer:
volcano Loihi
Step-by-step explanation:
Distance between volcano top and sea level is the summit elevation :
Summit elevation of volcano kliauea = 1227 miles
Summit elevation of volcano Loihi = - 969 m
The summit closer to sea level is that whose absolute summit level elevation is smaller :
Absolute values :
volcano kliauea = 1227 m
volcano Loihi = |-969| = 969 m
969 < 1227
Hence, volcano Loihi is closer to sea level
Epd445 was allegedly caught texting 57 minors but 21 of them turned out to be of age. What is the total amount of minors he was allegedly caught texting with?
Answer:
He was caught texting 36 minors.
Answer:
Step-by-step explanation:
Please help!! 50/25 points!!
Compute the sum
Answer:
3577
Step-by-step explanation:
From the question given above, the following data were obtained:
7•2ᶦ
i = 0, 1, 2, .., 8
Sum =?
The sum can be obtained as follow:
7•2ᶦ
i = 0
7•2⁰ = 7 × 1 = 7
i = 1
7•2ᶦ = 7•2¹ = 7 × 2 = 14
i = 2
7•2ᶦ = 7•2² = 7 × 4 = 28
i = 3
7•2ᶦ = 7•2³ = 7 × 8 = 56
i = 4
7•2ᶦ = 7•2⁴ = 7 × 16 = 112
i = 5
7•2ᶦ = 7•2⁵ = 7 × 32 = 224
i = 6
7•2ᶦ = 7•2⁶ = 7 × 64 = 448
i = 7
7•2ᶦ = 7•2⁷ = 7 × 126 = 896
i = 8
7•2ᶦ = 7•2⁸ = 7 × 256 = 1792
Sum = 7 + 14 + 28 + 56 + 112 + 224 + 448 + 896 + 1792
Sum = 3577
HELP!!! How did Mohomed Ghandi get so skinny? I'm doing a biography on him and need an answer ASAP!!!
Answer:
In 1911, he went on a no salt diet, (which he eased up after some time and convincing from doctors) which is bad for you since you need salt to survive. He also gave up meat and became a vegetarian, though he did attempt veganism, but faced many health problems, so he discontinued it. The last reason was because he fasted. A lot. And for long periods of time.
What is the value of (-1/2) to the power of 4
Answer:
1/16
Step by Step Explanation:
If you multiply -1/2 · -1/2 · -1/2 · -1/2 you get 1/16.
Which are correct representations of the inequality 6x2 3 + 4(2x – 1)? Select three options.
12 2x
6x > 3 + 8x - 4
O
-1.5
-1
-0.5
0
0.5
1
1.5
-1.5
-0.5
0
0.5
1.5
-1.5
-1
-0.5
0
0.5
1
1.5
The proper way to express the above inequality is 6x4(2x-1) is x2.
What is inequality?A mathematical statement that has two mathematical expressions on each side of the inequality sign is called an inequality. The indicators for inequality are,, >, or.
6x4(2x-1) is the given inequality.
So, 6x≥8x-4
6x off of both sides gives us
6x-6x≥8x-4-6x
0≥8x-6x-4
0≥2x-4
4 added on both sides give us
0+4≥2x-4+4
4≥2x
By dividing both sides by half, we obtain
(1/2)×4≥(1/2)×2x
2≥x
x≤2
Therefore, x≤2 is the correct representation.
Learn more about inequality here:
brainly.com/question/19498063
#SPJ7
Change 15:00 to 12 hour clock time using a.m. and p.m.
Answer:
3pm is the answer in the 12 hour clock.
