HELP!!!!
If the probability of a getting 4/25 out of 200 people, what about 500 people?
Answer:
123
Step-by-step explanation:
One leg of an isosceles right triangle measures 5 inches. Rounded to the nearest tenth, what is the approximate length of the hypotenuse?
A: 2.5 inches
B: 5.0 inches
C: 7.1 inches
D: 9.8 inches
Education researchers are interested in the workload expectations of freshmen at a local university. Since all of the freshmen are randomly placed into freshman seminar classes, the researchers randomly select 3 freshman seminar classes and survey all of the students within those classes. Which sampling method was used?
cluster sampling
simple random sampling
stratified random sampling
systematic random sampling
Answer: Cluster Sampling
Step-by-step explanation: I just took this test and got it correct :)
If the researchers choose three freshmen seminar classes at random and poll every pupil in those classes. The Cluster Sampling method was applied. Option A is correct.
What is cluster sampling?In the probability sampling technique known as cluster sampling, you split a population into groups, such as districts or schools, and then randomly choose a sample from among these groups. Ideally, each cluster should be a small representation of the population as a whole.
When studying large, dispersed populations, cluster sampling is most effective since interviewing every individual would be expensive, time-consuming, and sometimes impossible.
By using cluster sampling, it is possible to create smaller, more comparable clusters that represent the population being studied.
Thus, the researchers choose three freshmen seminar classes at random and polled every pupil in those classes. The Cluster Sampling method was applied. Option A is correct.
Learn more about cluster sampling here,
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Anyone wanna help me out??
Answer:
6955 ftStep-by-step explanation:
Refer to attached. Point J, segment BJ and angle measures added.Step 1, find BJ
BJ / AB = sin 20° ⇒ BJ = AB sin 20° ⇒ BJ = 600 sin 20° ≈ 205.2 ftStep 2, find BP
BJ/BP = cos 75° ⇒ BP = BJ / cos 75° ⇒ BP = 205.2/cos 75° ≈ 792.8 ftStep 3, find PQ
PQ/BP = sin 35° ⇒ PQ = BP sin 35° ⇒ PQ = 792.8 sin 35° ≈ 454.7 ftStep 4, find the elevation of peak P
Height above sea level = 6500 + 454.7 ≈ 6955 ft (rounded)Mallory is on a budget and wants to determine which cereal is a better buy. A 10-ounce box of Cereal A costs $2.70 and a 13-ounce box of Cereal B costs $3.64. The store is selling each cereal in 15 ounce boxes. Which cereal is cheaper and by how much?
Answer:
Cereal A is cheaper by $0.15
Step-by-step explanation:
Cost of a 10-ounce box of Cereal A = $2.70
So,
Cost of a 1-ounce box of Cereal A = [tex]\frac{2.70}{10}=\$0.27[/tex]
Cost of a 15-ounce box of Cereal A = [tex]0.27(15)=\$4.05[/tex]
Also,
Cost of a 13-ounce box of Cereal B = $3.64
So,
Cost of a 1-ounce box of Cereal B = [tex]\frac{3.64}{13}=\$0.28[/tex]
Cost of a 15-ounce box of Cereal B = [tex]=0.28(15)=\$4.2[/tex]
Here,
Cost of a 15-ounce box of Cereal B - Cost of a 15-ounce box of Cereal A = [tex]4.2-4.05=\$0.15[/tex]
Therefore,
Cereal A is cheaper by $0.15
A car is travelling at 40 mph
How long will it take this car to travel 130 miles?
Give your answer in hours and minutes.
Answer:
3 hours and 15 minutes
Step-by-step explanation:
-5Z = 55
What is Z?
Pls help
Answer:
z = -11
Step-by-step explanation:
-5Z = 55
to find z, divide each side by -5
[tex]\frac{-5Z}{-5} = \frac{55}{-5}[/tex]
z = -11
Answer:
Z = -11
Step-by-step explanation:
When dealing with variables, you want to get it alone so it instantly equals the number.
Since Z is being multiplied by -5, you're going to divide -5 because that's the opposite of multiplying--but you have to do it on both sides, not just the one.
Note that when you're dividing or multiplying a negative and positive number, the result with ALWAYS be negative!
-5Z = 55
/-5 /-5
Z = -11
Just in case, we'll plug in -11 for Z and see if it works.
-5(-11) = 55
Note again that when you're multiplying two negatives it cancels out the negative and makes the answer positive!
Hope this helped :)
what word does these letters make ? N I O A A R M C
What is the value of x?
x = 32
x = 36
x = 37
x = 40
Answer: 40
Step-by-step explanation:
because I just had that on my math test and got it wrong
PLEASE ANSWER ASAP GIVING BRAINLIEST
A researcher wants to collect data from the 700 police officers who work for a large city. Which of the following values
would be the best sample size for this population?
A. 200
B. 100
C. 75
D. 25
Hurry!!!! Will mark BRAINLIST answer if get correct. Plz help me you are a very good person if you help me.
Answer: 3 and 2
Step-by-step explanation:
How much is a 25% tip on a meal costing $44.00 ?
Answer:
$11
Step-by-step explanation:
44 x 0.25 = 11
Can you help me please? This is die soon.
use the equation i=6j-10 to find i when j=2
I =(6)(2)-10
I=12+-10
I=(12+-10)
I=2
2 is the final answer
ill mark brainlist plss belp
Simplify the Algerbraic expression ?
5y² + 4p + 4y² - p
What is an equation of the line that passes through the points (-3, 1) and (–6, 6)?
Put your answer in fully reduced form.
Factor 5z^2+45z. The factored polynomial is _
Which side lengths form a right triangle?
Answer:
C) 2,2,2.82842712
Step-by-step explanation:
Answer:
B and C
Step-by-step explanation:
Side lengths of 4, 8, and 12 do not form a right triangle. According to the Pythagorean Theorem, a² + b² = c². In this theorem, "c²" represents the largest side (c) squared
I need help plz plz plz
Abigail paid $62.00 for 8 friendship bracelets. Each bracelet cost an equal amount. What
was the cost of each friendship bracelet in dollars and cents?
F $7.14
G $9.25
H $54.00
J $7.75
The cost of each friendship bracelet in dollars and cents was J $7.75
What is the fundamental principle of multiplication?Multiplication is the mathematical operation that is used to determine the product of two or more numbers. If an event can occur in m different ways and if following it, a second event can occur in n different ways, then the two events in succession can occur in m × n different ways.
We are given that Abigail paid $62.00 for 8 friendship bracelets. Each bracelet cost an equal amount.
Cost of 8 friendship bracelets = $62.00
Therefore,
Cost of 1 friendship bracelets = $62.00/ 8
Cost of 1 friendship bracelets = 7.75
The cost of 1 friendship bracelets is $7.75
Learn more about multiplications;
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Ember has $80 to spend on clothes. She wants to buy a pair of jeans that cost $35 and spend the rest on t-shirts. Each T-shirt costs $5. How many t-shirts can Ember afford to buy?
Answer:
she can buy 9 shirts
Step-by-step explanation:
80-35=45
45÷5=9
plz mark brainlyest
Factorise
[tex] a {2} - 7a + 12[/tex]
MARKING BRAINLIEST TO FIRST PERSON WHO ANSWERS!!! ALSO UPPING POINTS TO 25
Answer:
Approximately 460 ft
Step-by-step explanation:
In any question where we have:
A right triangleAn given angle, andA given sideAnd we're asked to find:
A missing sideWe're gonna be using some trigonometry. The first question we've gotta ask is what we're looking for, and how the angles and sides relate to that. We're given:
The angle of elevation, 49°The distance to the base, 400 ftAnd we're looking for:
The height of the hill, which I'll call h.How do our sides relate to the angle? Well, the 400 ft side is adjacent to 49°, and the side h is opposite. From SOH-CAH-TOA, we can see that the last trig function, tangent, is equal to opposite/adjacent. Let's turn this into an equation to bring it all together:
[tex]\tan{49^\circ}=h/400[/tex]
Solving for h, we find that
[tex]h=400\tan{49^\circ}\approx400(1.15)=460[/tex]
So the heigh of the hill is approximately 460 ft.
Eric runs a coffee shop and bought 5,480 cups at the beginning of the week. At the end of the
week, he had 20% of the cups left. How many cups does Eric have left? |
Answer:
1096
Step-by-step explanation:
Answer:
1096 cups i think not sure dou
Step-by-step explanation:
4. Please answer! I’ll give brainliest! Please show evidence:))
Answer:
G = 50
H = 80
I = 50
Step-by-step explanation:
Angle in a triangle is equal to 180. This means that we will equal all the angles to 180
2x + 2x + 4x-20 = 180
8x - 20 = 180
8x = 180 + 20
8x = 200
x = 200 / 8
x = 25
G = 2 * 25 = 50
I = 2 * 25 = 50
H = 4 * 25 - 20
H = 100 - 20 = 80
Mark opens a bank account with $20. He plans to put in $5 each week.
Complete the table below to show the total amount of money Mark has in his bank account from 0 to 10 weeks.
Time
(weeks)
0
1
2
3
4
5
6
7
8
9
10
Money ($)
$20
Make sure to align the money next to the weeks
0:20
1: 25
2:30
3:35
4:40
5:45
6:50
7:65
8:70
9:75
10: 80
hope this helps
Maya and Reginald are installing hardwood flooring. Maya can install flooring in a room in 4 hours. Reginald can install flooring in a room in 3 hours. How long would it take them if they worked together?
Answer:
1 hour 42 minutes approx
Step-by-step explanation:
Given data
Mayas work rate= 1/4 room per hour
Reginald work rate= 1/3 room per hour
Let the total time taken for both of them be T
Hence their combined work rate
1/4+1/3= 1/T
3+4/12=1/T
7/12=1/T
T= 12/7
T= 1.7 hours
Hence it will take them 1 hour 42 minutes approx
1p
14) The number of students at LAMS is 1872 students. The ratio of girls to
boys in the school is 7:5. How many more girls than boys are in school?
*
Answer:
someone help
Step-by-step explanation:
The question is: how many boys are in the school