Answer:
The correct answer is "664".
Step-by-step explanation:
The given values are:
Margin of error,
E = 5%
i.e.,
= 0.05
Level of confidence,
C = 99%
i.e.,
= 0.99
Level of significance,
α = 0.01
From the z value table,
Critical z = 2.576
As we know,
The required sample size n will be:
= [tex](\frac{z}{E} )^2\times p(1-p)[/tex]
On substituting the values, we get
= [tex](\frac{2.576}{0.05} )^2\times 0.5(1-0.5)[/tex]
= [tex](51.52)^2\times 0.25[/tex]
= [tex]2,654.31\times 0.25[/tex]
= [tex]663.5776[/tex]
i.e.,
= [tex]664[/tex]
dimensions of a rectangular prism as shown below: Length:2 1/4 feet. Width: 1 foot. Height:1 1/4 feet. The lengths of the side of a small cube or 1/4 for each. Part A: how many small cubes can be packed in a rectangular prism? Show your work. Part B: use the answer obtained in part a to find the volume of a rectangular prism in terms of the small cube in unit cube.
Answer:
Step-by-step explanation:
In this case we will use the formula V= length × width × height
so, V= 2 1/4 × 1 × 1 1/4
=2 1/4 × 1 1/4
= 9/4 × 5/4
= 45/16
=2 13/16 cubic feet is the full capacity of the rectangular prism
then get the volume of the cube so, we will use the formula V= side times side times side
so, V= 1/4 times 1/4 times 1/4
V= 1/8 times 1/4
V= 1/32 cubic is the volume of the cube
then we will divide the full capacity of the rectangular prism to the volume of the cube
so, 2 13/16 divided by 1/32
so, 2 13/16 times 32/1
so, 45/16 times 32/1
=1,440/16
=90 small cubes can be packed in a rectangular prism in Part A
so, in Part B
V= 2 1/4 × 1 × 1 1/4
=2 1/4 × 1 1/4
= 9/4 × 5/4
= 45/16
=2 13/16 cubic feet is the volume of the rectangular prism
Which expression is equivalent to 6-8 x 65?
Answer:
12-16 X 130
Step-by-step explanation:
Lol its asking for an equivalent expression meaning the same thing soooo... I just multiplied each number by two: 6X2= 12) 8X2=16) 65X2= 130) so the expression will be 12-16 X 65.
ps.
If u get any other answers with a different one than mine it doesnt mean its incorrect because there are infinite equivalent answers for this expression
Which triangles are similar? I WILL GIVE BRAINLIEST!!!
Answer:
A and B!!!
Step-by-step explanation:
Jerrold was playing around and created the following expressions for fun. Are they equivalent? How can you tell? 2x + 2 x + 1 + x + 1 2(x + 1)
HELP PLEASE
A popular scale for model trains has a ratio of 3 inch to 20 feet. If a toy train is 4.5 inches long, how long is the real train?
A. 60 ft
B. 24.5 ft
C. 90 ft
D. 30 ft
Please help look at picture
round to the nearest tenth
Someone please help me and thank you:)
Answer:
your answer is F . s=1/6r .
The sum of the measures of two angles is 107.3º. One angle has a measure of 51º. What is the measure of the second angle?
Answer:
56.3°
Step-by-step explanation:
If the total is 107.3° just subtract 51° to get 56.3°
Dom buys a stock option for $2500 that pays out 15% annual interest compounded monthly. What is Dom's balance after 6 years?
Answer:
375
Step-by-step explanation:
Evaluate the function, find f(-2):
f(x) = 2x^2 +3x
Answer:
B) 2
Step-by-step explanation:
f(-2) = 2 * (-2)^2 + 3(-2)
f(-2) = 2 * 4 - 6
f(-2) = 8 - 6
f(-2) = 2
which of the following are some of the possible soulitions for the inequality -9w < -54
the answer
w < 6
Step by Step
-9w < -54
w < -54/-9
w< 6
You can think of percentages in terms of fractions. Describe how you can think about 10%, 25%, and
75% by using fractions. Consider using tape diagrams to support your explanation
Answer:
You can think percentages as fractions by always using the denominator as 100 and the percentage as the numerator. For example, 10% would be 10/100 or 1/10 and 25% as 25/100 or 1/4 and 75% as 75/100.
Americans eat an average of 100 acres of pizza per year. That is equivalent to 4,356,000 square feet of pizza per year. How is the area expressed using scientific notation?
Answer:
D. [tex] 4.356 * 10^6 [/tex] ft²
Step-by-step explanation:
Scientific notation of a number is expressed in the following form, [tex] a * 10^b [/tex]
Where,
a = decimal number (1 ≤ |a| < 10)
b = the power of 10 whereby the scientific notation is equivalent to the original number.
To express 4,356,000 square feet in scientific notation, do the following:
1. Move the decimal point to the left up to the last non-zero digit = a = 4.356
2. Since we moved the decimal point by 6 decimal places, therefore, b = 6
3. Substitute the values of the variables into
Thus:
4,356,000 = 3. Substitute the values of the variables into
a * 10^b
Thus:
4,356,000 = 4.356 * 10^6
How to figure 7% of 2400?
Answer:
168
Step-by-step explanation:
2400 X .07= 168 so 168 is the answer
PLZ HELP ASAP WILL MARK U BRANLYEST... thanks:)
Step-by-step explanation:
Here we are going to use the Pythagoras theorem to get the Hight of the Television
[tex] {42}^{2} - {32}^{2} = x[/tex]
X Being the unknown side
[tex] {42}^{2} - {32}^{2} = 740 \\ x = \sqrt{740} = 27.2[/tex]
So the height is 27.2in
The Are of the screen would be L x B
27.2 x 32 = 870.2 in^2
We will use Pythagoras for the last question also
[tex] {40}^{2} + {32}^{2} = 2624 \\ \sqrt{2624} = 51.23[/tex]
She will need 51.23 in screen size
WILL GIVE BRAINLIEST
Answer:
the answer it's B we got the same test
PUT THE B
Answer:
mm option a is right
Step-by-step explanation:
bcz there is only 1 zero less in weight of elephant as compared to whale hope it may help u
Find the missing dimension. Use the scale factor 1: 8.
Model length: 6 cm.
Actual length: ?cm.
What is the actual length
Answer:
9cm
Step-by-step explanation:if im wrong sorry
Find 3 ratios that are equivalent to the given ratio. 4:15
Answer: 8:30, 16:60, 32:120
Functions W and Z are both linear functions of x. Which statement comparing the functions is true?
Answer is in the file below
tinyurl.com/wpazsebu
Evaluate the expression when a=4 and b=-3.
-a +4b
Answer:
-16
Step-by-step explanation:
-a +4b
By putting the value a = 4 and b = -3
= -(4) + 4 × (-3)
= -4 - 12
= -16 (Ans)
A male African elephant weighs
7 Tons. A male African lion at the local zoo weighs
1
50
of
the weight of the male African elephant.
How many pounds does the lion weigh?
The lion weighs
pounds.
0.14 Short Tons = 280 pounds
(I dont know how a fat A* Lion weighs 280 pounds, but just go with it-)
Dylan and Marcella decided to build a fence. Dylan worked alone for 2 hours. Marcella arrived, and they worked 1 hour together. Dylan left, and Marcella worked 1 hour alone. The fence was then ½ done. Individually, it takes Dylan 3 more hours to build a fence than Marcella. How long would it take Dylan and Marcella each to build the fence by themselves?
Helpp worth 20 points!!
write the equation of the line below
Answer:
y = -x -2
Step-by-step explanation:
Answer:
-x - 2 = y
I hope this is correct :P
A new reading program may reduce the number of elementary school students who read below grade level. The company that developed this program supplied materials and teacher training for a large-scale test involving nearly 8500 children in several different school districts. Statistical analysis of the results showed that the percentage of students who did not meet the grade-level goal was reduced from 15.9% to 15.1%. The hypothesis that the new reading program produced no improvement was rejected with a P-value of 0.023.
a) Explain what the P-value means in this context.
b) Even though this reading method has been shown to be significantly better, why might you not recommend that your local school adopt it?
Answer:
The solution to the given points can be defined as follows:
Step-by-step explanation:
In point a:
There is still a 2.3% chance which 15.1% of learners who also don't achieve a level by naturally-excluding specimens only will see if 15.9% is the population means value.
In point b:
Throughout the old system, 1352 learners must not read in classes, but 1284 should not write throughout academic performance throughout the new curriculum. A reduction, as well as the significance of such a decrease, would depend mostly on the cost of switching to the new initiative.
a. The explanation of the p-value should be explained below.
b. The suggestion that should not be considered is also explained below.
P-value and the suggestion not considered:a. Since there is a still 2.3% chance that 15.1% of learners should not accomplish the level via naturally-excluding specimens only would watch in the case when 15.9% should represent the mean value of the population.
b. If we considered the old system, so 1352 learners should not read the class however, 1284 should not write the academic performance. So there is the reduction that based on the switching cost
learn more about hypothesis here: https://brainly.com/question/18142699
Which is a better deal 12.4 ounces for $4.99 or 21 ounces for $6.49?
Answer:
Getting 21 ounces for $6.49 is a better deal!
Step-by-step explanation:
4.99 / 12.4 = 0.402419...
6.49 / 21 = 0.30904...
0.4 is larger than 0.30 therefore 0.30 is less and a better deal.
Have an amazing day! ^-^
calculate the rate per litre of which a car uses petrol if it uses 20 litre of petrol to travel 180 km
Answer:
9km per litre
Step-by-step explanation:
Rate=180km/20l
Rate=9 km/l
Y-3=2(x+1)
Missing values?
find the product
72
×
19
______
A. 710
B. 1,358
C. 720
D. 1,368
Answer:
D
Step-by-step explanation:
First, start with the ones column. 2*9 is 18, so write the 8 below and carry the 1 into the tens column. Now, we do 9*7 plus the 1 we carried, so that makes 64. The first row under the line should be 648. Next, annex a zero under the number 648 in the ones column. Now we move to the tens. 1*2 is 2. 1*7 is 7. The number under 648 should be 720. Now, we add 648 and 720. 648+720 is 1,368. 1,368 is our final product, which makes the answer D. I'm sorry if this seemed confusing (it's a bit hard to explain in words), but I hope it helps!
Choose the following function that belongs to the squaring family.
Oy= x3 + x2
O y=x2-x
Oy= x+22
Oy= X
what is the solution to the equation below -5/4 x + 2/5 equals -13 / 30