In the formula for confidence interval; CI = X ± Z(s/√n)
what is Z95% ?
Answer:
>> Z95% means critical z value for 95% Confidence level.
>> Z95% = 1.96
Step-by-step explanation:
The formula for confidence interval is given as;
CI = x¯ ± Z(s/√n)
Where:
x¯ is the mean
Z is the critical value for a particular %CL
s is standard deviation
n is sample size
Thus, Z95% means critical z value for 95% Confidence level.
From tables, the z-value for a confidence level of 95% is 1.96
Answer:
The answer is 2 NOT 3. Ignore the answer listed above as 3. It is incorrect.
Step-by-step explanation:
This partial circle has a radius of 11 inches.
What is the area of this figure?
Use 3.14 Pi.
A circle with a quadrant missing. The length of one side of the quadrant is 11 inches.
Answer:
284.96
Step-by-step explanation:
7) Original price: ?
Discount: 25%
Sale price:
$28
Answer:
Step-by-step explanation:
let be x the price before the discount
original price= 28/(1-0.25)=28/0.75=37.33
original price=37.33
Answer:
37.3
Step-by-step explanation:
The original price = x which represents 100% of the price. So we subtract 100%-25, which is 100-25=75 or 75%(0.75)
So, $28 is 75% off the original price.
28 divided by .75 = 37.3
Then, 37.3 would be the original price.
Which of the following properties is always true for a parallelogram?
Answer:
c
Step-by-step explanation:
Select the correct answer. Consider these functions: What is the value of f(g(-2))? A. -28 B. -12 C. 12 D. 146
Answer:
c
Step-by-step explanation:
Math is so hard for school
Answer:
yeah ikr
Step-by-step explanation:
Answer: What’s the math problem
Step-by-step explanation:
PLS HELP ME ASAP! I NEED IT
Answer:
Step-by-step explanation:
Evaluate the expression 2(x-5) - 3(x-6)
Answer:
−x+8
Step-by-step explanation:
Hope this helps :)
A right cubic prism has edges of 2 1/2 inches. How
many cubes with side lengths of inches would
be needed to fill the prism?
A. 125 cubes
B. 37.5 cubes
C. 18.75 cubes
D. 15.625 cubes
Answer:
Option D, the volume is 15.625 cubes
Step-by-step explanation:
For a cube of side length L, the volume is:
V = L^3
for the smaller cubes, we know that each one has a side length of 1 in, then the volume of each small cube is:
v = (1in)^3 = 1 in^3
Then:
1 in^3 is equivalent to one small cube
Here we know that the side length of our cube is (2 + 1/2) in
Then the volume of this cube will be:
V = [ (2 + 1/2) in]^3
To simplify the calculation, we can write:
2 + 1/2 = 4/2 + 1/2 = 5/2
Then:
V = ( 5/2 in)^3 = (5^3)/(2^3) in^3 = 125/8 in^3 = 15.626 in^3
This means that 15.625 small cubes will fill the prism.
So the correct option is D.
I need to show work but I can’t figure this problem out
Answer:
47, 68
Step-by-step explanation:
x+(x+21)=115
2x+21=115
2x=94
x=47
How do i solve for x in geometry
Answer: Find the value of X in triangles by subtracting known angle measurements from 180 degrees. Since the value of all angles within a triangle must equal 180 degrees, if you know at least two angles, you can subtract them from 180 to find the missing third angle
Step-by-step explanation:
Which of these figures is NOT a quadrilateral?
Answer:
the correct answer is A
step by step explanation
Figure A is NOT a quadrilateral. Then the correct option is A.
What is a quadrilateral?The quadrilateral has four sides and four angles. The sum of internal angles is 360 degrees. In a quadrilateral, there are four vertices.
A rectangle's opposite sides are parallel and equal, and each angle is 90 degrees. In a rhombus, opposite sides are parallel and all sides are equal. In a parallelogram, opposite sides are parallel and equal.
Figure A is NOT a quadrilateral. Because two corners of the figure are rounded and in the quadrilateral, all the vertices are shaped.
Figure A is NOT a quadrilateral. Then the correct option is A.
More about the quadrilateral link is given below.
https://brainly.com/question/13805601
#SPJ6
belia borrowed 4000 AED for 3 years with an interest rate of 1.5% per year. How much interest will she pay at the end of 3 years? (Show each step of your calculation)
Answer:
4000(1.5/100)×3
=180
180+4000
=4180
A mailing supply company produces yellow mailing envelopes. The envelopes come in
a variety of sizes, but the length is always 4 centimeters more than double the width.
Write an equation to find the dimensions of an envelope that has a perimeter of 26
centimeters.
Answer:
Step-by-step explanation:
L=2W+4
P=2(L+W), using L from above makes this
P=2(2W+4+W)
P=2(3W+4)
P=6W+8
6W=P-8
W=(P-8)/6, since we are told P=26
W=(26-8)/6
W=18/6
W=3 cm, and since L=2W+4
L=2(3)+4
L=6+4
L=10 cm
So the dimensions of the envelope with a perimeter of 26cm is 3cm by 10cm
HELP MEEEEEE PLSSSSS
Answer:
64
Step-by-step explanation:
If you measure the cubes inside for the length, width and height, you get:
Length - 5 cubes
Width -5 cubes
Height - 3 cubes
The volume of the prism is 5 * 5 * 3 = 75. This means the prism can hold a total of 75 cubes
The amount of cubes already in there is 11
so 75 - 11= 64
In ΔQRS, the measure of ∠S=90°, SQ = 9.7 feet, and RS = 1.3 feet. Find the measure of ∠R to the nearest degree. (please answer asap)
Answer:
82
Step-by-step explanation:
PLS HELP 222222222222222222
Answer:
g(x) = [tex]2^{x}[/tex] + 3
Step-by-step explanation:
Given f(x) then f(x) + c is a vertical translation of f(x)
• If c > 0 then a shift up of c units
• If c < 0 then a shift down of c units
Here the shift is 3 units up, then
g(x) = [tex]2^{x}[/tex] + 3
What is the diagonal length?
Answer: 15
Step-by-step explanation:
do sqrt 12^2+9^2
= sqrt 144+81 = sqrt 225 = 15
A new cookie cake company is offering a
special deal: order one cookie cake at the
regular price, and get a second cookie cake
with a diameter twice the length of the first for
the same price. Desmond orders a cookie cake
with an 8-inch diameter. What is the area of the
second cookie cake Desmond receives?
Usen 3.14.
F 50.24 in?
G 100,48 in.2
H 200.96 in?
J 804 in.
2
Answer:
200.96in^2
Step-by-step explanation:
If the 1st cookie cake is 8" for its diameter and the 2nd cookie cake will have twice the length diameter of the 1st cookie cake .You will do 2 × 8 to get the diameter of the 2nd cookie cake.
First cookie cake diameter is 8".
Second cookie cake's diameter is 16".
Since we need the radius to find the area of the 2nd cookie cake we're going to do 16 / 2 which equals 8 so 8 is the radius.
A=(pi)r^2
A=(pi)8^2 *to the 2nd power means times by the same number
A=(pi)64
A= (3.14)(64)
A=200.96
=200.96^2
pi= 3.14 *for this problem
3. Which rule best describes the last three numbers shown in the pattern? 10, 12, 9, 11
Answer:
it goes by 2 two times then subtracts 3 then again
Step-by-step explanation:
10,12,9,11,8,10,7
Find the values of x and y, write your answer in simplest form.
Answer:
Step-by-step explanation:
You have a 30-60-90 triangle. The sides of a 30-60-90 are in the ratio 1:√3:2.
The side opposite the 30° angle is 5, so the side opposite the 60° angle is 5√3, and the side opposite the 90° angle is 5×2 = 10.
x = 5√3
y = 10
Write an equation for the situation.
Answer: B
Step-by-step explanation:
Hope this helps
equations for 15-8=7
Answer:
15-8=7
Step-by-step explanation:
Hope it helped
the calorie cafe is known for their hotdogs and burgers. the number of calories in a burger is 220 more than the number of calories in a hotdog. the mega meal, which consists of 2 hotdogs and a burger, contains 1420 calories! how many calories are in each item?
Answer:
Number of calories in burger = 620 caloriesNumber of calories in hotdog = 400 caloriesStep-by-step explanation:
Number of calories in burger = x
Number of calories in hotdog = y
y = x - 220
x + 2y = 1,420
Substitution:
x + 2 * (x - 220) = 1,420
x + 2x - 440 = 1,420
3x = 1,420 + 440
x = 1,860 / 3
x = 620 calories
y = x - 220
= 620 - 220
= 400 calories
The calories in each item are :
Number of calories in burger = 620 caloriesNumber of calories in hotdog = 400 calories"Calorie cafe"
Number of calories in burger = x
Number of calories in hotdog = y
Equations:
y = x - 220--------------1
x + 2y = 1,420----------2
Substitution:
x + 2 * (x - 220) = 1,420x + 2x - 440 = 1,4203x = 1,420 + 440x = 1,860 / 3x = 620 caloriesPutting Value of x in equation 1.
y = x - 220y = 620 - 220y = 400 caloriesTherefore, the calories in each item are the number of calories in burger is 620 calories and number of calories in hotdog is 400 calories.
Learn more about "Simultaneous equation":
https://brainly.com/question/16763389?referrer=searchResults
If the equation of a function is y=x2-5, what is the output when the input is -1? А) -6 B) -5 O -4 D) - 3
Answer:
- 4
Step-by-step explanation:
If the equation of a function is y=x2-5, the output when the input is -1 is
y = (-1)² - 5
= - 4
Hope it will help :)
What is ?1/3 X 15 I wasn’t paying attention
Answer
3
Step-by-step explanation:
1/3 times 15 ? is what i belive you are asking?
therefore it is three becasue it you multipy 15 by 1 then divide it by 5, 15 divide 5 is three
A dilation has center (0,0). Find the image of the point L(6-8) for the scale factor 7.
Answer:
D (42,-56)
Step-by-step explanation:
Scale factor means you multiply, so you multiply (6,-8) by 7.
6 x 7 is 42 and 7 x -8 is -56. So your answer is D (42,-56).
Find the volume of the cylinder if the radius is 7 m and the height is 12 m. Use 3.14 for pi.
Answer:
1847.26
Step-by-step explanation:
u square the radius then u times it by pie then the height
Answer:
1847.25 approximately
Step-by-step explanation:
formula to calculate volume of cylinder is equals to pi × radius² × height
3.14 × 7² × 12
3.14 × 49 × 12
3.14 × 588
1847.25
If wrong so please sorry
Find the volume of the cone
( Points)
12 yd
8 yd
V=408.4 yd
V= 408.1 yd
V=8042 yd
Va 804.1 yd
Step-by-step explanation:
step 1. the volume of a cone (V) is (1/3)(pi)r^2h
step 2. V = (1/3)(pi)8^2(12)
step 3. V = (1/3)(pi)(768)
step 4. V = 256pi
step 5. V = 804.2 yd^3
40 POINTS HELP ME PLEASE!
Select the expressions that are polynomials.
Question 3 options:
x^2/7+1
x^−3+4x
−2x^3+2x+4
6x−x^3+4x^2
Answer:
the ones are options 2 and 3
Answer:
Lol Hi Alycia! The answer to your question is A, C and D
Step-by-step explanation:
☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆
☁Brainliest is greatly appreciated!☁
Hope this helps!!
- Brooklynn Deka
Can someone help me PLZ! I keep posting the same question and no ones helping me :((((((((((((
Find the solution to the system of equations below. Start by adding the equations. Write your answer as an ordered pair.
-2x + 2y = -8
2x + y = 5
Answer:
-2x + 2y = -8 is x=y+4
2x + y = 5 is x= −1/ 2 y+ 5/ 2
Step-by-step explanation:
Answer:
3x+2y=-3
Step-by-step explanation:
Slope = -3.000/2.000 = -1.500
x-intercept = -3/3 = -1
y-intercept = -3/2 = -1.50000
2x-3y=-15
Slope = 1.333/2.000 = 0.667
x-intercept = -15/2 = -7.50000
y-intercept = 15/3 = 5
If this was helpful then please mark brainliest. Have a great day!
OTHER PROBLEM
y=2x-2
Slope = 4.000/2.000 = 2.000
x-intercept = 2/2 = 1
y-intercept = -2/1 = -2.00000
y=3x-7
Slope = 6.000/2.000 = 3.000
x-intercept = 7/3 = 2.33333
y-intercept = -7/1 = -7.00000