Using the Central Limit Theorem, it is found that the approximate standard error of the mean for a sample size of 300 is given by:
B. 0.46
What does the Central Limit Theorem State?It states that the sampling distribution of sample means of size n from a population with standard deviation [tex]\sigma[/tex] has standard error [tex]s = \frac{\sigma}{\sqrt{n}}[/tex]
In this problem, we have that the parameters are [tex]\sigma = 7.89, n = 300[/tex], hence the standard error is given by:
[tex]s = \frac{7.89}{\sqrt{300}} = 0.46[/tex]
Hence option B is correct.
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Help someone I just need the answer
Jessie saves $6 each week. In how many weeks will she have saved at least $50?
Answer:
9 weeks at least to have at least 50 dollars.
Step-by-step explanation:
Well 6 dollars each week and to get AT LEAST 50 dollars you need to save for 9 weeks.
Well 9*6=54
If you do it for 8 you’d only get 48 which is not at least 50 but 54 is.
So 9 weeks is the final answer.
50≤54
50 isn’t less then 48
Answer
. . . . . .
Step by step explanation -
Determine the value of variable in the following
equation:
2x + 40 = 30
What is the graph of the system y = −2x + 3 and 2x + 4y = −8? Line through point 0, 3 and 1, 1. Line through 0, negative 2 and negative 4, 0. Line through point 0, 3 and 1, 1. Line through 0, 2 and negative 4, 0. Line through point 0, 3 and 1, 1. Line through 0, 2 and 4, 0. Line through point 0, 3 and 1, 1. Line through 0, negative 2 and 4, 0.
Answer:
X = -4-2y
Step-by-step explanation:
Answer:
Line through point 0, 3 and 1, 1. Line through 0, negative 2 and negative 4, 0.
Step-by-step explanation:
I accidentally got it right
Raquel has to fill-up 5 volleyball with air. Each ball has a radius of 4.5 inches. What is the volume of the 5 volleyballs all together?
WILL MARK BRAINLEST!!
Answer:
Mate just divide 5 by 4.5 and you got your answer (1.11)
Step-by-step explanation:
If you see any question that has each in its name then its a division question.
Help please I’m so behind
Answer: 5 and 27 as remainder
Step-by-step explanation:
PLEASE HELP!! I don't really know how to solve this.
Answer:
x=13
y=14
Step-by-step explanation:
We know that angle JNK is equal to angle MNL. We also know that angle JNK and angle KNL are supplementary.
Knowing this, we can write two equations: [tex]4x-1=3y+9[/tex] and [tex](4x-1)+(2x+6y+19)=180[/tex]. We can solve for y in the first equation. Subtracting 9 from both sides gives us [tex]4x-10=3y[/tex]. Dividing both sides by 3 gives us [tex]\frac{4x-10}{3} =y[/tex].
We can plug that in to the second equation to get [tex](4x-1)+(2x+6(\frac{4x-10}{3} )+19)=180[/tex]. Expanding the second parenthesis, we get [tex]2x+8x-20+19[/tex] which equals [tex](10x-1)[/tex]. We now have [tex](4x-1)+(10x-1)=180[/tex]. Expanding gives us [tex]14x-2=180[/tex]. Adding 2 to both sides gives us [tex]14x = 182[/tex]. Dividing both sides by 14 gives us [tex]x=13[/tex].
We can now plug 13 into the above equation to solve for y. [tex]y= \frac{4*13-10}{3}[/tex] Solving that gives you [tex]y=14[/tex].
The bus travels 35 blocks in 7 minutes . If the bus travels at a constant speed , how long will it take to travel 50 blocks ?
HELPPP PLEASE NOOO LINKSSS PLEASE
Answer:
10 min
Step-by-step explanation:
35/7=5 blocks in 1 min
50/5=10
a trucker hauls citrus fruit from Florida to Montreal. Each crate of oranges is 4 ft3 in volume and weighs 80 lb. Each crate of grapefruit has a volume of 6 ft3 and weighs 100 lb. His truck has a maximum capacity of 300 ft3 and can carry no more than 6800 lb. Moreover, he is not permitted to carry more crates of grapefruit than crates of oranges. If his profit is $2.50 on each crate of oranges and $4 on each crate of grapefruit, how many crates of each fruit should he carry for maximum profit
answer = 560 profited
4)Greg's backyard is 47 feet wide. How many yards and feet is this
Answer: 15 Yards 2 feet
Step-by-step explanation:
3 feet in a yard
45/3 = 15
2 remaining = 2 feet
Answer:
15.667 in yards
Step-by-step explanation:
The price of the stereo was $96 the tax rate was 6% what was the tax
Answer:
101.76
Step-by-step explanation:
What is the volume of the cylinder shown? (Use 3.14 for it.)
6.838.92 in.^3
1.413.56 in^3
1.243.44 in^3
11.190.8 in.^3
Step-by-step explanation:
11^2= 121
multiply by pi
121×3.14=379.94
then multiply the height
379.94×18=6,838.92
If 25% is 14, what is 100%?
Answer:
56
Step-by-step explanation:
25% = 14
Therefore,
25%*4 = 14*4
100% = 56
Can someone help? Please? Thanks:)
Read the procedural text.
Plain Taffy
3.5 lbs. white sugar
2 cups water
1 teaspoon cream of tartar
Put the sugar and water in a clean pan. Heat mixture over medium-high heat, stirring occasionally until melted. Continue heating to a slow boil.
Add the cream of tartar and put a lid on the pan. Allow mixture to boil in this way for ten minutes.
Remove the lid and immerse a candy thermometer in the boiling liquid. Boil to 310 degrees.
Quickly remove pan from heat and pour contents into oiled frames, tins, or onto a pouring slab.
Cut into bars or squares with a knife or taffy cutter while still warm.
Allow taffy to cool before eating. so the answer is A
Find the surface area of the cylinder
8 cm
3 cm
The surface area of the cylinder is cm?
(Simplify your answer. Type an exact answer in terms of r.)
Enter your answer in the answer hoy
Answer:
V=pr²t
=3,14 ×8×8×3
=602.88
Step-by-step explanation:
IVA
Answer: surface area
A = 56 π cm^2
Step-by-step explanation:
A = 56 π cm^2
you can stop here and write our answer as 56π Or we can plug in 3.14 and multiply. 56*3.14 = 175.84cm^2
Heyyy...need ur help...again cause I'm uneducated
Answer:
c
Step-by-step explanation:
Answer:
A and D
That is the answer.
4. Calculate the compound interest earned when $8 500 at 8% per year for:
a. 3 years
b. 8 months
What is the recursive rule for an=4n-3
Answer:
1
Step-by-step explanation:
n=1
4×1=4
4-3=1
Adam is thinking of a mystery number. If he divides it by 9 and then subtracts 7 from it, the result is 1. What is Adam's mystery number?
Answer:
72
Step-by-step explanation:
1+7=8
8*9+72
In a right triangle, the 58-cm hypotenuse makes a 51-degree angle with one of the legs. To the nearest
tenth of a cm, how long is that leg?
Answer:
36.5 cm
Step-by-step explanation:
The Adjacent leg is 36.5 cm
What are trigonometric functions?"The trigonometric functions (also called circular functions, angle functions are real functions which relate an angle of a right-angled triangle to ratios of two side lengths."
What is hypotenuse, opposite and adjacent side of a right angled triangle?"In a right angled triangle, the hypotenuse is the longest side, an opposite side is the one across from a given angle, and an adjacent side is next to a given angle."
We have
Hypotenuse (AB) = 58 cm
Angle θ = 51 degree
From the figure, by using trigonometric functions
Cos θ = [tex]\frac{BC}{AB}[/tex]
we have to find BC
Cos [tex]51^{0}[/tex] = [tex]\frac{BC}{AB}[/tex]
We have, AB = 58 cm
BC = AB cos [tex]51^{0}[/tex]
⇒BC = 58 . cos [tex]51^{0}[/tex]
⇒BC = 36.50 cm
⇒BC = 36.5 cm
Hence, Adjacent leg is 36.5 cm
Learn more about trigonometric functions here
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HELPP !!! I need help
Answer:
4. the answer is 5.4 which is between 5 and 6.
5. the answer is C.
Step-by-step explanation:
for #4 you just had to divide 27 by 5, and for #5 both numbers are positive so they are in the first quadrant.
WILL GIVE BRAINLIEST!!!!!!!
A surveyor wants to find the distance between peaks A and B. He finds point C, 288 ft from peak A, so that ACB is a right angle. The measure BAC is 89. Find the distance AB
Hints on solving trigonometry problems:
If no diagram is given, draw one yourself.
Mark the right angles in the diagram.
Show the sizes of the other angles and the lengths of any lines that are known
Mark the angles or sides you have to calculate.
Consider whether you need to create right triangles by drawing extra lines. For example, divide an isosceles triangle into two congruent right triangles.
Decide whether you will need Pythagorean theorem, sine, cosine or tangent.
Check that your answer is reasonable. The hypotenuse is the longest side in a right triangle.
How to use the tangent ratio to find missing sides or angles?
Example:
can someone help me plss
help please. need it asap
Answer:
x = 180 - 50 - 86 = 44°
Which image shows the position of
2
n a number line?
ОА
2
-1
0
1
OB.
th
1
-1
-3
- 2
2
3
Ос.
-2
0
-3
1
2
3
D.
+
-2
- 1
Answer:
b
Step-by-step explanation:
Please help I don't understand this subject in math and my teacher isn't explaining it well. please explain how you find the answer, thanks :)
Answer:
[tex]in \: this \: shape \: you \: have \: two \: pieces \: one \: square \: ad \: half \: of \: circle \\ area \: of \: circle = 12 \times 12 = 144 \\ area \: of \: hafl \: of \: circle = 12 \times 12 \times 0.25 \times 3.14 = 113.04 \\ whole \: area = 144 + 113.04 = 257.04[/tex]
Answer: E. 200.5 ft
so first you’d find the area of the square which is 12 x 12 = 144 (area = length x width)
next, find the radius of the semi circle which is 12 divided by 2 (because we used the measurements from the square and the diameter is 12 and radius is half of diameter)
pretend your solving for a full circle and then divide it by 2 to get the answer for the semi circle since a semi circle is half of a circle (formula for circle A = pi r^2)
area of circle = 113.04 divided by 2 to get semi circle = 56.5
then add both areas together
56.52 + 144 = 200.5
Help! find the area of the parallelogram
28.2
Step-by-step explanation
A=bh=6·4.7≈28.2
VI.
Molly paid $85 last month for her utilities. 55% of this amount was for electricity
a. How much did Molly pay for electricity?
What percentage of her money did she have left over?
c. What is the amount of leftover money Molly has for last month?
Answer:
$46.75
0.55 X 85 = $46.75
Question 6 of 10
A(n) is produced when you slice a cone with a plane that is parallel to
the base of the cone.
A. parabola
Ο Ο Ο
B. circle
C. hyperbola
D. ellipse
SUBMIT
The correct option is (b) circle .
The conic section formed by the cone and a plane parallel to its base is a circle.The surface of a right-regular cone and a plane parallel to the base of the cone cross to form the closed figure known as a circle. The ellipse, which we'll discuss next, is actually just a special instance of the circle.What is conic?Any curve created by the intersection of a plane and a right circular cone is known in geometry as a conic section, sometimes known as a conic. The intersection can be a circle, an ellipse, a hyperbola, or a parabola, depending on the angle the plane makes with the cone.What conic section is formed from slicing parallel to the base of the cone ?
The resulting curve is a circle if the cone is cut in half parallel to the base. The curve is known as an ellipse if the cone is cut at a modest angle. The curve generated is known as a parabola if the slice is done parallel to the cone's edge.Learn more about Conic brainly.com/question/22337165
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Plz help me I will give you 40 points and Brainly