Answer:
A. Selection Bias
Step-by-step explanation:
Selection bias is the bias introduced by the selection of individuals, groups, or data for analysis in such a way that proper randomization is not achieved, thereby ensuring that the sample obtained is not representative of the population intended to be analyzed. This is represented by choosing the students without glasses.
Answer:
selection bias
Step-by-step explanation:
i got it right
Can someone help me it is algebra 2
Write the interval {x|—3 < x < 5}
as an inequality and using interval
notation.
I can't understand this question write it properly please ok plz
Christian emptied 56 and 24 candies into 4 equal groups. How many candies were in each group
Answer: 20
Step-by-step explanation: 20x4=80. 56+24=80
i need help ;^; please im no big brain
Answer:
[tex]18\sqrt{3} + 55\sqrt{3} = 73\sqrt{3}[/tex]
Step-by-step explanation:
27= 3 * 3 * 3
75 = 3 * 5*5
18 sqr 3 + 55 sqr 3 = 73 sqr 3
Find the quotient. Round to the hundredths place.
99.466 divided by 14.8
Answer:
6.72
Step-by-step explanation:
I multiplied both numbers by 10 to make it easier in my opinion. That made the equation 994.66 x 148
Then, I divided it until i got to the thousandths place. Lastly, i just rounded making it 6.72
At the red box, you can rent DVDs for $1.75 each per day, or you can get unlimited rentals for a monthly fee of $30. At most, how many DVDs could you rent at $1.75 before spending more than the cost of a month's unlimited rentals?
the larger of 2 numbers is twice the smaller number if 12 is subtracted from the larger number the result is 7 more than the smaller number
Answer:
The larger number is 4
Step-by-step explanation:
4 is the larger number and two is the smaller number..
Answer:
x=19y=38Step-by-step explanation:
Let x be the smaller number
Let y be the larger number
The larger of 2 numbers is twice the smaller number :
[tex]y = 2x[/tex]
if 12 is subtracted from the larger number the result is 7 more than the smaller number :
[tex]y-12 = 7+x[/tex]
To solve for x ;
Substitute 2x for y in the second equation
[tex]2x-12=7+x\\2x-x=7+12\\x = 19[/tex]
To solve for y
[tex]If\: y=2x ,\\y = 2\times 19\\\\y= 38[/tex]
PLSSSS HELPPPPPPPPPPPP
Which value of × makes 7+5(x-3)=27+5(x−3)=22, a true statement?
Choose 1 answer:
a=4
b=5
c=6
d=7
Answer:
Option c = 6Step-by-step explanation:
Given,
7+5(x-3)=27+5(x−3)=22
(Taking one of the equation)
=> 7 + 5(x - 3) = 22
=> 7 + 5x - 15 = 22
=> 5x = 22 + 15 - 7
=> 5x = 30
[tex] = > x = \frac{30}{5} [/tex]
=> x = 6 (Option c)
Answer:
Solve the equation for x:
7 + 5(x - 3) = 225(x - 3) = 15x - 3 = 3x = 3 + 3x = 6Correct choice is c
A school has a ratio of girls to boys as follows:
6:5
What fraction of the school is girls
Answer:
6/11
Step-by-step explanation:
The ratio says that, for every 6 girls, there are 5 boys.
For every 6 girls, there are 6 + 5 = 11 students.
So the fraction of girls is
6/11
A bag of sweets contains mints and toffees only.There are 21 mints in the bag.One quarter of the sweets are toffees.Calculate the total number of sweets in the bag.
Answer:
Total number of sweets in the bag is 28
Step-by-step explanation:
let the total number of sweets in the bag be x :
[tex]{ \tt{for \: toffees : }} \\ \frac{1}{4} \: of \: x[/tex]
therefore fraction of mints = 1 - fraction of toffees :
[tex] = \frac{4}{4} - \frac{1}{4} \\ \\ = \frac{3}{4} [/tex]
therefore:
[tex] = > \frac{3}{4} \: of \: x = 21 \: mints \\ \\ \frac{3}{4} \times x = 21 \\ 3x = 21 \times 4 \\ x = \frac{21 \times 4}{3} \\ x = 28[/tex]
total sweets number is 28
how many acts are in the play romea and juliet. is this a statistcal quetion
Solve the equation x2 = 5.
o
x = 5
o
x = 25
o x= V5
o x= V5
Answer:
x^2 = 5
x = ±√5
Answer:
x = ± [tex]\sqrt{5}[/tex]
Step-by-step explanation:
Given
x² = 5 ( take the square root of both sides )
x = ± [tex]\sqrt{5}[/tex] , that is
x = [tex]\sqrt{5}[/tex] or x = - [tex]\sqrt{5}[/tex]
Find the equation for the line with the given properties. Express the equation in slope-intercept form.
Slope = 7; containing the point (7,-1). What is the equation of the line?
y =
Answer:
y = 7x - 50
Step-by-step explanation:
the standard form for a line equation is
y = ax + b
a is the slope.
b is the intercept with the y-axis (x=0).
we know, a = 7
so,
y = 7x + b
to get b we use the point (x = 7, y = -1)
-1 = 7×7 + b = 49 + b
b = -50
=>
y = 7x - 50
a square + 7 a + 12 =A + 4
Step-by-step explanation:
[tex] {a}^{2} + 7a + 12 = a + 4 \\ {a}^{2} + 7a - a - 4 + 12 = 0 \\ {a}^{2} + 6a + 8 = 0 \\ {a}^{2} + 4a + 2a + 8 = 0 \\ a(a + 4) + 2(a + 4) = 0 \\ (a + 4)(a + 2) = 0 \\ a + 4 = 0 \: or \: a + 2 = 0 \\ a = - 4 \: or \: a = - 2[/tex]
Answer:
a = -4 or a = -2
Step-by-step explanation:
a² + 7a + 12 = a + 4
=> a² + 7a - a + 12 - 4 = 0
=> a² + 6a + 8 = 0
=> a² + 2a + 4a + 8 = 0
=> a(a + 2) + 4(a + 2) = 0
=> (a + 4)(a + 2) = 0
=> a = -4 or a = -2
(3/5) + (-6/7)+(-2/5)+(3/14) find
Answer:
Step-by-step explanation:
Rearrange the givens
3/5 - 2/5 - 6/7 + 3/14
1/5 - 12/14 + 3/14
1/5 - 9/14
The lowest common multiple is 70
14/70 - 45/70 = - 31/70
How do you put these numbers in order: 2.25, 2.6, 3, and 2.5?
ANY APPROPRIATE ANSWER HELPS! :)
Answer:
From Least to Greatest: 2.25, 2.5, 2.6, 3
From Greatest to Least: 3, 2.6, 2.5, 2.25
Step-by-step explanation:
Do Not Pay Any Less, Mrs. Mess Puzzle
Mrs Mess was buying a set of garden furniture.
The bill was seventy dollars.
She gave the attendant what she thought were
two $50 bills, (actually two $100 bills).
The attendant was sleepy and didn't notice either,
so he gave Mrs. Mess what he thought were
three $10 bills (actually three $50 bills).
Who ended up better off than they should?
Answer:
Step-by-step explanation:
She owes 70
She pays 200
She gets 150
So the story is 200 220
She pays 200 and gets 220 including the furniture.
She 20 dollars to the good.
The GCF of two numbers is 3.
Their LCM of the two numbers is less than 20.
Which could not be the two numbers?
Answer:
Step-by-step explanation:
Let say a and b the 2 natural integers with 0 < a< b.
Since a*b=GCF(a,b)*LCM(a,b)
a*b < 3*20=60
[tex]\begin{array}{c|c|c|c|c|c}a&b&a*b&GCF&LCM&GCF*LCM\\---&---&---&---&---&---\\3&6&18&3&6&18\\3&9&27&3&9&27\\3&12&36&3&12&36\\3&15&45&3&15&45\\3&18&54&3&18&54\\6&9&54&3&18&54\\---&---&---&---&---&---\\\end {array}[/tex]
Make the number 16 using six "1"s. Example: Make the number 18 using six "1"s. A: (11-1-1)(1+1)= 18
27(1-x)(x^2+x+1)+81x(x-1)
Step-by-step explanation:
hope this may help you. have a nice day.solve the following vertically opposite angle
Step-by-step explanation:
[tex]thank \: you[/tex]
Answer:
y = 20
BRAINLIEST, PLEASE!
Step-by-step explanation:
y = 20 (vertical angles are equivalent, and the opposite angle, which is vertical, is 20.)
Please someone help I’m stuck with this question please help show work too
Answer:
I think it is C but it could also be A
Step-by-step explanation:
So here is my explanation. The perfect answer would be {all real numbers p<=345} however because that isn't stated let me explain the answers. A states that there could be 0-345 students however it also states that there could be a fraction of a student (its some wierd thing my Algebra teacher taught me). B states that f(p) is between that but that doesn't make sense. C states all positive intergers less than 345 which means a positive whole number. That means that it is all whole students less than 345 which makes sense however I am iffy cause I think it means there cannot be 345. D states all greater than 0 which exceeds the 345 limit.
Can you please show all your work plus the equation
1-16 Please helppppp
Collect 5 large numbers and 5 small numbers related in life and express them as exponents.
Answer:
the large numbers are
125,100,234,450,650,550
I hope u will be able to make it in an exponents form if u can not feel free to ask me
the small numbers are
10,20,30,40,50
Have a happy day ahead
PLEASE HELP!!!!!
Need hELP ASAP
Answer:
bro please help me make me brianliest I think c
A and B are supplementary angles. If A=(3x-17) and B = (2x-23), then find the measure of B
Answer:
B = 65°
Step-by-step explanation:
Two "supplementary" angles add up to 180 degrees.
Therefore:
A + B = 180
(3x - 17) + (2x - 23) = 180
"Combine like terms" on the left side: the Xs and the numbers.
3x + 2x - 17 - 23 = 180
5x - 40 = 180
Add 40 to both sides:
5x = 220
And divide 5 on both sides:
x = 44
But we're looking for B, which is
(2x - 23) = 2(44) - 23 = 88 - 23 = 65
B = 65°
i need help with this one
Answer:
B to (1, 0)
H to (3, -1)
F to (3, -3)
A to (-2, -2)
Step-by-step explanation:
An easy way to reflect points across axes is by counting the distance from the point you want to reflect to the axis you are reflecting across TWICE, and you'll be at the reflection point.
PLSSS HELPPPPP!!!! Evaluate the expression. -1 - (-6 + 10) = -1 =
Answer:
3
Step-by-step explanation:
Given
- 1 - (- 6 + 10 ) ÷ - 1 ← evaluate parenthesis
= - 1 - (4) ÷ - 1
= - 1 - 4 ÷ - 1 ← evaluate division
= - 1 + 4
= 3
1. 2x < 10, x = -3
x+7 % -5, x = 5
2.
6
state whether the given number makes the inequality true or false
Answer:
both questions is false
(-57) x (-19) + 57
Can you explain this answer as Distributive Property? ☺️
Answer:
[tex]1140[/tex]
Step-by-step explanation:
[tex](−57)×(−19)+57 \\ =1083+57 \\ =1140[/tex]
Hope it is helpful....Answer:
1140
Step-by-step explanation:
1. you first need to distribute -57 to -19 as they are being multiplied
(-57) · (-19) + 57
(1083) + 57
2. now you remove the parenthesis and add the liked terms
1083 + 57 = 1140
hope this helps! if you have any questions, let me know!