biased means: when a sample does not accurately represent the population.
random sample means: a sample that is NOT BIASED.
Answers
Related Questions
Solve the system using addition. Use pencil and paper. Explain why the addition method is a good choice for solving the system. If you wanted to solve for x first, is the addition method still a good choice? Explain.
x-2.5y=12.5
-x+2.3y=11.9
Answers
Answer: the answers are x = -292.5 and y = -122
Step-by-step explanation:
Elimination is combining equations to obtain an equation with just one variable. This is only possible if the coefficients of one variable in both equations are opposed and will cancel each other out when put together. Elimination is most effective when it occurs naturally in the equations, but equations may also be modified to produce typical coefficients by multiplying or dividing equations by a given value. The next step would be to utilize the equation we devised to determine the variable's worth and then insert that value back into the original equation to determine the remaining variable.
For solving the question to find x we have to make the coefficients of y the same. for that, we will multiply the first equation by 2.3 and the second equation by 2.5.
After that, we get the 2 equations as
2.3x-5.75y = 28.75
-2.5x+5.75y = 29.75
then by adding the 2 equations we get
-0.2x = 58.5
and by dividing 58.5 by -0.2 we get
x = -292.5
substituting the value of x in any equations above we get
y = -122
ANSWER FOR BRAINLIEST
The circumference of a circle is 17π ft. Find its radius, in feet.
Answers
Answer:
howdy
Step-by-step explanation:
2.71 is the answer i think
Please answer this correctly and explain how you did it.
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Answer:
x = 128
Step-by-step explanation:
The angles are across form each other, meaning that they are the same angle. I hope this explains it enough, if not I can add more.
(Will give BRAINLIEST if answered adequately) PLEASE answer number 12 and EXPLAIN how you got the answer.
Answers
Answer:
The graph of the line shifts horizontally left 2 units.
Step-by-step explanation:
Gabby just joined a new yoga studio. The studio charges a monthly fee plus an extra fee for each class students attend. The monthly cost for attending c classes is 20.50+2c dollars. Gabby plans to attend 9 classes this month.
What price will Gabby pay if she attends 9 classes this month?
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What is the volume of the pyramid?
I will report if you send links
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Answer:
The answer is 1133.33 i got it from go ogle so blame me if i got it wrong blame go ogle can i have Brainliest
Step-by-step explanation:
Answer:
66 2/3
Step-by-step explanation:
The way to solve this is The general volume of a pyramid formula is given as: Volume of a pyramid = 1/3 x base area x height. Where Ab = area of the polygonal base and h = height of the pyramid. Note: The volume of a pyramid varies slightly depending on the polygonal base.
What i did was i first tried to do 17 x 20 x 10 which game 3400 but when i remembered that V=1/3 x base area x height which would be 1/3 x 17 x 20 = 113 1/3 but if the base was 10 it would be 1/3 x 10 x 20 = 66 2/3. so i think the base is 10 and the answer would be 66 2/3
If i am wrong i'm sorry
i need help and if u get the answer plz explain it
Answers
Answer:
G) 10 Hours
Step-by-step explanation:
150/3= 50 miles per hour
500 miles divided by 50 is 10 hours
Help The first one is what is on sale and the bottem is what needs to be solved!
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Answer:
jacket 80
shoes 32 and 16
shirt 9 , 8.04, 4.08
Step-by-step explanation:
you need to multiply the original cost by the percentage off and then subtract from the original
example
Jacket is originally priced at $120 it is on sale for 1/3 off which means that if you divide 120 by 3 you will get 40. but you would have to subtract the 40 from 120 giving you 80
Determine how many solutions the system has. (Hint: Both lines are graphed over each other)
A. Infinitely many solutions
B. I am Spartacus!
C. One solution
D. No solution
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Answer:
the answer is a
Step-by-step explanation:
because they are on top of one another there is an infinity of solutions
The question is in the picture below^^
Giving brainliest so no links
____________________________________________________________________
༶•┈┈⛧┈♛ ♛┈⛧┈┈•༶༶•┈┈⛧┈♛ ♛┈⛧┈┈•༶v༶•┈┈⛧┈♛ ♛┈⛧┈┈•༶----
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Answer:
a.) 2 in.
Step-by-step explanation:
Answer:
A is your answer
Step-by-step explanation:
if you look you can see were the line stops. your welcome
1. Name to pairs of complementary angles in the diagram.
2. Name to pairs of supplementary angles in the diagram.
(If you answer correctly i’ll give brainliest!)
Make sure to use three letters when naming each angle. For example, angle DEC
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Answer:
Two pairs of the complementary angle-
(62,28) (40,50)..
Two pairs of supplementary angle-
(125,55) (90,90)..
Step-by-step explanation:
I hope this helps! lolz. <3
Need Help Please ASAP
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Answer:
first step; subtract 7 from both sides. you are left with -3n=8. step two; divide both sides by 3. it should get you to -n=8. therefore n=-8
Step-by-step explanation:
i hope this helped you! :)
2s+10-7s-8+3s-7
syplifying expression fyi
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Answer:
-1+5z, -25+20y, 4d+14, 2n-2, 40k+8, 8b+5, -9+22p
Step-by-step explanation:
1) -4+7z+3-2z
-1+5z
2) 15+4(5y-10)
15+20y-40
-25+20y
3) 2d+17-3-2d+4d
4d+14
4) 12n-8-2n+10-4
2n-2
5) 8(2k+1+3k)
16k+8+24k
40k+8
5) 4(2b+2)-3
8b+8-3
8b+5
6) -4+8p-6p-5+20p
-9+22p
Without evaluating each expression, determine which value is the greatest.
Group of answer choices
(−756)÷(−934)
(−756)⋅(934)
(−756)+(−934)
756−934
Explain Reasoning
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Answer:
756−934 is the greatest because the others are more in the negatives
Step-by-step explanation:
PLZZZZZZZZ HELPP MEE BRAINLIEST
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a diagram of a wheelchair ramp made of concrete is shown below how much concrete was used to make it?
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Answer:
Step-by-step explanation:
4*12*5 = 240
13*4/2*12 = 312
240+312 = 552
Marie is bringing bagels and cream cheese to school as a birthday snack for her class. The cost of b bagels and c packages of cream cheese is 0.85b+2.5c dollars. Marie is bringing 30 bagels and 2 packages of cream cheese.
What price did Marie pay for the bagels and cream cheese?
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Answer:
I don’t know this I just need points
Step-by-step explanation:
Answer:
$30.50
Step-by-step explanation:
(0.85*30)+(2.5*2)=30.5
I need help plz 8th grade math
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Answer:
1.25 percent
2. 25 percent
3. 65 percent
4. no
WILL GIVE BRAINLIEST
A Ferris wheel has a diameter of 212 feet. How far will one passenger travel in one revolution of the wheel? Explain your answer
Answers
Answer: 665.68 ft
Step-by-step explanation:
You‘re trying to find the circumference of the Ferris wheel. The formula for circumference is C=3.14(approximation for pi)x the diameter. So you would do 3.14 x 212 = 665.68
△ PQR is rotated by 180° in a counterclockwise direction about the origin to obtain △ P′Q′R′. What are the coordinates of △ P′Q′R′?
Answers
Answer:
it is A
Step-by-step explanation:
Which THREE side lengths CAN NOT make a triangle
11m, 11m, and 12m
5m, 7m, and 8m
6m, 10m, and 21m
Answers
Answer: 6m, 10m, and 21m
Step-by-step explanation:
The two smaller sides have to add to be greater than the third side. 6+10 is 16 which is smaller than 21.
Answer: D. 21cm
Step-by-step explanation: because you divide all sides by 2 then get youe slope form and multiply by seven
Gina has $87 in her piggy bank. She spends $32.67 on a gift for her sister. How much money does Gina have left?
Answers
Answer:$49.33
Step-by-step explanation:
87.00 - 32.67
= 49.33
Remember to add the dollar sign :D
$49.33
Answer: $54.33
Step-by-step explanation:
87.00
- 32.67
_____________
54.33
solve the equation -2(x-5)=-14
Answers
Answer:
x=12
Step-by-step explanation:
-2(x-5)=-14
x-5=-2/-14
x-5=14/2
x-5=7
x=5+7
x=12
Please help! Look at the picture.
Answers
Answer:a c d!!
Step-by-step explanation: tbh I searched it up
Solve the following equation: x + 25 = 30
dont comment just for points cuz i will do the same to u
Answers
Answer:
5
Step-by-step explanation:
Answer:
X + 25 = 30
X + 25-25 = 30 - 25 = 5
Step-by-step explanation:
NEED THIS ASAPPPPPP The circumference of a circular field is 175.84 yards. What is the radius of the field? Use 3.14 for pie and do not round your answer.
Answers
Answer:
Circumfrerence =pi d
So d=175.84/3.14
Step-by-step explanation:
when 2 pipes fill a pool together, they can finish in 5 hrs. if one of the pipes fills half the pool then the other takes over the finishes filling the pool, it will take them 18 hrs. how long will it take each pipe to fill the pool if it were working alone?
Answers
Answer:
about 10 hrs each id say
Step-by-step explanation:
I just did 5 times two
The time taken to fill the pool if it were working alone is 18 hours.
What is multiplication?One of the four fundamental mathematical operations, along with addition, subtraction, and division, is multiplication. Multiply in mathematics refers to the continual addition of sets of identical sizes.
The symbols cross (×), asterisk (*), and dot (·) are used to denote multiplication. You most frequently utilize the cross when writing in your notebooks. In computer languages and algebra, the asterisk and dot are both utilized (higher mathematics).
Given:
When 2 pipes fill a pool together, they can finish in 5 hrs,
One of the pipes fills half the pool then the other takes over to finish filling the pool, it will take them 18 hrs
1 / 2 of pool = 9 hrs as given
full pool = 9 × 2 = 18 hours
Therefore, The time taken to fill the pool if it were working alone is 18 hours.
To know more about multiplication:
https://brainly.com/question/1135170
#SPJ6
Please help!!!!! 10 Points!! (i only have 23)
Answers
Explanation:
Any number that was multiplied by less then one is going to be your answer. :)
can someone please answer this and also PROVIDE AN EXPLANATION
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The base is always the bottom or foundation. To find this we need the area of the triangle at the bottom.
It is 8*6/2 or base times height divided by 2
We would get 24
This is our B value. Now height is 4 in they give us this.
Plug it in 24*4/3
We get 32 inches
Answer:ccccccccccccccccccccccccccccccc
Step-by-step explanation:
A food shop makes wraps where you can only choose one kind of wrap, one meat, and one veggie. (NO TROLL ANSWER)
Answers
we don’t have the whole question so we don’t know what amber likes and doesn’t like.
Explanation:
next time include the WHOLE question
