A researcher posts a newspaper advertisement offering $10 in exchange for participation in a short study. The researcher accepts the first 10 people who respond to the advertisement. Which of the following statements is true about the sample?
a It is not a valid sample because it is only a short study.
b It is a valid sample because money is offered to participants.
c It is a valid sample because the first 10 people were selected to participate.
d It is not a valid sample because it is not a random sample of the population.
Answer:
A. it's not valid sample because it is only a short story...................................REWARDING BRAINLY
Which question could be answered using a measure of center?
How many students got an A on their last math test?
If a wrestling team was put in order from lowest to highest weight class, in what weight class would the wrestler in the middle be?
What is the difference between the highest and lowest grades on last year’s Algebra I exam?
What is the range of shoe sizes in the middle school?
What is the total weight in ounces of the three heaviest boxes?
Please help me worth branliest chart and answer choices on picture tysm if u help
Answer:
D. 252 ounces
Step-by-step explanation:
The number line is cut in fourths. The 3 heaviest boxes are, 1 between 4 and 5 lbs, and 2 boxes between 5 and 6.
1st box: 4.75 lbs
2nd box: 5.5 lbs
3rd box: 5.5 lbs
Total lbs: 15.75 lbs
15.75 pounds= 252 ounces
5. Point H is located at (-7, 5). Where is H' after a 270° clockwise rotation?
I hope this helps you sorry to get it wrong
Answer:
H after a 270 degrees clockwise rotation is at (-5,-7)
Janet can make 1/2 of a necklace in 20 minutes. At this rate, how many necklaces can Janet make in 2 hours?
Answer:
3 necklaces
Step-by-step explanation:
2 hours = 120 minutes
1 necklace in 40 minutes
120/40 = 3
3 necklaces
Answer:
3 necklaces
Step-by-step explanation:
2 hours needs to be in the same units as the 20 minutes
2 hours = 2 * 60 minute = 120 minutes
Now we can use ratios to solve
1/2 necklace x necklaces
-------------------- = ----------------
20 minutes 120 minutes
Using cross products
1/2 * 120 = 20x
60 = 20x
Divide by 20
60/20 = 20x/20
3= x
What part of 1hr and 40 min is 25 min as a fraction?
Step-by-step explanation:
1 hour = 60 minutes
40 minutes out of an hour can be written as: 40/60
Fraction = 40/60
= (2 × 30) / (3 × 20)
Canceling out common factors of numerator and denominator, we get 2/3
Therefore, 40 minutes is 2/3 of an hour.
help i need the answer i have a low grae in math and need to get this right pls and thx❤
Answer: Put one dot above the number 1 on the dot plot. Put four dots above the number 2 on the dot plot. Finally, put one dot above the number 3 on the dot plot.
Step-by-step explanation:
Hope this helps and Please mark Brainliest.
How many edges does the solid have
Answer:
12
Step-by-step explanation:
Can someone please help me
What is the value of K ?
[tex] k + 60° = 180° [/tex] (linear pair)
⇒ [tex] k = 180° - 60° [/tex]
⇒ [tex] k = 120° [/tex].
Answer:
Step-by-step explanation:
k= 180-69
k= 120 degrees
Could someone help me figure out how to do the problem anyway like not answer just how to do it cause that's what I really wanted? Someone to help me work out the problem or like an example problem so I know how to do the problem. The problem is from the previous question I added
Wait what was the previous problem? I need that and then I can try to help. ;D
fill in the blanks
Result
Frequency
Heads, Heads
13
Heads, Tails
12
Tails, Heads
11
Tails, Tails
14
Total
50
Based on your data, what is the experimental probability that the family has two dogs or two cats? Well, there are four outcomes, 2 cats, 2 dogs, 1 cat and 1 dog, or 1 dog and 1 cat, so because there are those four outcomes I would say that the experimental probability would be _____.
Evaluate the expression for x = 29.
add 223+374+402 using expanded form
next,change your answer back too standard form
the answer is 999
or 900 90 9
hope this helps have a good day
Hurry Need Help I Will Give Brainliest!!
Congruent is the answer
I WILL GIVE BRAINLIEST!!!
Which statement best describes the mean of the data listed below?
10, 7, 9, 5, 8, 6, 7, 3, 10, 5, 7
The middle value of the ordered data set is 7.
The value that occurs most often in the set is 7.
The difference between the smallest value and the largest value is 7.
The sum of all the data values divided by the number of data values is 7.
Answer:
4. The sum of all the data values divided by the number of data values is 7.
In short, the mean of the data is the average.
The legs of a right triangle are 15 feet and 18 feet long. What is the area of the triangle?
Answer:
135
Step-by-step explanation:
Well, this is easy!
We just have to remember the formula!
L*W*1/2
We get 270/2.
This equals 135!
please help!! giving brainlest if explained ??!
Find the value of x.
solve for x:
[tex]\frac{x}{12} - 6=-5[/tex]
Answer:
x = 12
Step-by-step explanation:
add 6 to each side first to get:
x/12 = 1
cross-multiply to get:
x = 12
please help now i need this quick
Answer:Step-by-step explanation:
Answer to number 4 is Likely or certain
Simplify the following expression.
What is the probability of landing on A then a C?* First Spin Second Spir С C E A B A DC
Answer:
Probability of landing on A: 25% chance
Probability of landing on C: 37.5% chance
Step-by-step explanation:
A. There are 2 A’s out of 8 letters which gives us a fraction of 2/8.
2/8 = 1/4 = 0.25 = 25%
C. There are 3 C’s out of 8 letters which gives us a fraction of 3/8.
3/8 = 0.375 = 37.5%
Hopefully this helped, good luck!
(Middle school math) please help, just for letter a. Thank you.
Answer:
She can wear the blue pair with all three shirts and jackets
She can wear the black pair with all three shirts and jackets
She can wear the brown pair with all three shirts and jackets
Sorry if it is wrong
Measure of missing angle
Answer:
44 degrees.
Step-by-step explanation:
Since angle A is 46 degrees, and angle C is 90 degrees (because of the right angle) you add 46 and 90 (you get 136) then subtract it from 180 (since every triangle equals 180 degrees) which gets you to 44 degrees.
Answer:
224
Step-by-step explanation:
360-46-90=224
^
(right angle)
Which expression represents 12 times a number, n, minus 6?
A. 12n – 6
B. 12 – 6n
C. 12 + n – 6
D. 12n – 6n
Please do step by step explanation for branliest.
Answer:
A
Step-by-step explanation:
Because you start from the beginning 12 times n, 12n, then you subtract 6, 12n-6
Which set of ordered pairs does not represent a function?
Answer:
D
Step-by-step explanation:
(0, 0) (0, 1) (1, 2) (1, 3)
For it to be a function each x value should have one y value.
There are two 0's for x and two 1's for x. This is how you can tell it's not a function.
You have been reflecting about your relationship with math. How can thinking about yourself as a learner help you become a better student?
I'm 13 with learning disabilities can someone um help me with this
pls help me find the volume of the triangular prism
Let's find the area of the triangle first:
2 x 5 = 10, 10 divided by 2( x 1/2 ) = 5
5 x 4(width) = 20
Formula of area of a Triangle:
BH x 1/2
(base) x (height) x 1/2(basically just dividing by 2)