You want to know whether the students in your school enjoy the school lunch. You survey every student in your class. Is this survey biased or unbiased?
A)Unbiased because the sample only included the students in one class.
B)Biased because the sample only included the students in one class.
C)Biased because the sample included all the students in the class.
C)Unbiased because the sample included all the students in the class.
Answer: B
Step-by-step explanation:
help me with this please
The formula for the surface area of a cylinder is [tex]2\pi rh+2\pi r^{2}[/tex]. Using this, you can calculate that the cylinder's total surface area is 56[tex]\pi[/tex]. But, since Adrian only needs to find the surface area outside of the tire, I'm going to assume that you only need to apply [tex]2\pi rh[/tex] to your problem. Therefore, the answer is 24[tex]\pi[/tex] or 75.4 (rounded to the nearest tenth). I hope this helps!
Mrs. Lowry is ordering car decals for each family to put on their cars for the upcoming baseball season. She ordered 25 decals. She got a deal on them and they will be $2 cheaper for each decal. The total came to $250. Write an equation to find the amount, d, for the normal cost of each car decal without the deal. What is the normal cost of each decal without the deal?
Answer: Without the deal: $12 10+2=d
Step-by-step explanation:
25=250
1=10
10+2=12
12x25=300
PLEASE HELP
Pair the cards which are additive inverses (when added the sum is zero).
Basic understanding series
#5-multiplying negative numbers
—————
give 3 examples on multiplying negative numbers and an explanation for other problems similar to those.
-
brainliest/five star question: give a real world example of multiplying negative numbers
Answer: 3 x (-7) -6 x (-4) -156 x ( 65 )
Step-by-step explanation:
negative times negative= positive
negative times positive= negative
positive times negative= negative
Real world example:
you have -15 dollars in your saving account and want how many times you will still be able to take money out of your account before you owe more than 100 dollars.
What do you need to know about addition to add algebraic expressions
Answer:
To add two or more monomials that are like terms, add the coefficients; keep the variables and exponents on the variables the same. To subtract two or more monomials that are like terms, subtract the coefficients; keep the variables and exponents on the variables the same.
There are many laws that govern the order in which you perform operations in arithmetic and in algebra. The three most widely discussed are the Commutative, Associative, and Distributive Laws.
Step-by-step explanation:
Solve the equation 29 = v + 23 for v.
−52
−6
6
52
Answer:
29
Solving Algebraic EquationsRulesTo solve, you must isolate the variable. This means moving the variable and it's coefficient to the other side of the equation with only the same variable on the same side with all the constants on the other side.
If you multiply, divide, add, subtract, square root, exponent both sides of the equation by the same value, that end value stays the same.
Terminology
Variable: Any letter than stands for a value than can be solved and change value. (i.e. x, y, z, a, etc.)
Coefficient: The number right before a variable (without being separated by an operator). It is a multiplication factor for a variable. Basically, it's just a way to express what you are multiplying a variable by.
If the coefficient is 1, it means [variable] * 1. 1[variable]
Q)Subtract 23 on both sides.
29 - 23 = v + 23 - 23
v = 29
Consider
2
1
2
divided by
1
4
.
(a) Write a real-world problem for the division.
(b) Create a model or write an equation for the division.
(c) Find the quotient for the real-world problem in part (a). Show your work or explain your reasoning.
Rewrite one tenth times x cubed times y plus two tenths times x times y squared using a common factor.
one tenth times x times y times the quantity x squared plus 2 times y end quantity
one tenth times x cubed times y squared times the quantity y plus 2 times x end quantity
one fifth times x times y times the quantity 2 times x squared plus 2 times y end quantity
one fifth times x times y times the quantity x squared plus 2 times y end quantity
Answer: The expression which can be rewritten using a common factor is; xy/10 (x² + 2y).
What is an expression?
Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.
We have the following information given as;
One tenth times x cubed times y plus two tenths times x times y squared using a common factor.
We know that 'times' has to be replaced with multiplication.
Now, we will change this into mathematical expression as;
x³y/ 10 + 2xy²/ 10
Now, the common factor can be ;
xy/10
The Common factor refers to the number and the variables taken as a common factor should be able to completely divide the terms given any expression.
Now, taking it as a common factor, we have the following expression:
xy/10 (x² + 2y)
Hence, the required expression is; xy/10 (x² + 2y).
Step-by-step explanation:
pleaseee helpppp. is this right ???
Answer: Yes
Step-by-step explanation:
do tomorrow a 3am please help.
simplify (30-50i)/(3-5i)
Answer:
Step-by-step explanation:
its should be fifty 8
The simplification of the given complex number is 4.70
What are complex numbers?Complex numbers are those numbers that contain the imaginary and the real part.
A Complex value z is written in a rectangular form as z = x+iy where (x, y) is the rectangular coordinates.
r is the modulus of the complex number and θ is the argument
r =√x²+y² and θ = tan⁻¹y/x
We need to simplify the complex number;
(30-50i)/(3-5i)
Therefore,
(30-50i)/(3-5i) x (3+5i)/(3+5i)
(30-50i) (3+5i)/(9 + 25)
90 + 150i - 150i - 250 /34
160/34
4.70
Learn more about complex numbers here:
https://brainly.com/question/16048106
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On Monday, a museum had 600 visitors. On Tuesday, it had 740 visitors. Estimate the percent change in the number of visitors to the museum. Estimate how many people would have to visit the museum on Wednesday to have the same estimated percent change between Tuesday and Wednesday as between Monday and Tuesday. Explain your answer.
Answer:32.5
Step-by-step explanation:36
⋅w
36
36
w
w
=
w
1170
⋅
w
=
36
1170
=32.5
Answer correctly please. Explain your work on how you got your answers.
Put in order. Due tomorrow! Worth 12 points.
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PLEASE HELLPPPP!!!! I HAVE NO IDEA WHAT IM DOING
Answer:
A
Step-by-step explanation:
I think A is the answer because Its the closest one to the plot and what question is asking for
a survey was conducted in which participants were asked their preferred time of day between AM or PM and their choice of fast food restaurant between McDonald's(M),Taco Bell (T)and Wendy's(W)
Answer: There's no question
Step-by-step explanation:
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Answer: 16076.80 cubic yards
Step-by-step explanation: (16)^2 x 3.14 x 20
= 32 x 20 x 3.14
= 16076.80
what is happening in ohio?
Katy went to play miniature golf on Monday, when it cost $1 to rent the club and ball, plus $3 per game. Jill went Thursday, paying $2 per game, plus rental fees of $4. By coincidence, they played the same number of games for the same total cost. How much did each one spend?
Answer:
Step-by-step explanation:
10 dollars
what is 0.3113 rounded to the nearest thousandths?
Answer: 0.311
Step-by-step explanation:0.3113 the 3 is lower then 5 so the 1 stays the same
mr. Duncan just had his condo appraised to find out its value. According to the appraiser, the
ondo is currently worth $202,470. That is 2% higher than the condo was worth when he
ought it several years ago. What was the value of the condo then?
Answer:
The appraiser said that the condo is currently worth $202,470 and it's 2% higher than the condo was worth when Mr. Duncan bought it several years ago. To find the value of the condo when he bought it, we need to subtract 2% of the current value from the current value.
We can find 2% of the current value by multiplying it by 0.02:
$202,470 x 0.02 = $4,049.4
To find the value of the condo when he bought it, we need to subtract $4,049.4 from the current value:
$202,470 - $4,049.4 = $198,420.6
Therefore, the value of the condo when Mr. Duncan bought it was $198,420.6
Express the following rate as a unit rate. If necessary, round your answer to the nearest tenth.
RATE: 40 grams for 90 gallons
Answer:
Step-by-step explanation:
40 grams/ 90 gallons
÷ both sides by 90
0.44444…
Round to nearest tenth
= 0.4
A composite figure is shown.
A five-sided figure with two parallel sides. The shorter one is 16 feet. The height of the figure is 22 feet. The portion from the vertex to the perpendicular height is 8 feet. The portion from a point to a vertical line created by two vertices is 4 feet.
Which of the following represents the total area of the figure?
44 ft2
400 ft2
440 ft2
484 ft2
Answer:
The area of the composite figure can be calculated by breaking it down into separate geometric shapes and calculating the area of each shape. The figure can be divided into a rectangle and a triangle. The rectangle can be calculated by multiplying the length (16 feet) by the height (22 feet) resulting in 352 ft^2. The triangle can be calculated by multiplying the base (4 feet) by the height (8 feet) and dividing by 2, resulting in 16 ft^2. By adding the area of the rectangle and the triangle, we get 352 ft^2 + 16 ft^2 = 368 ft^2. So, the total area of the figure is 368 ft^2. Therefore, the correct answer is 440 ft2.
Step-by-step explanation:
above
If a five-sided figure with two parallel sides and the shorter one is 16 feet. The figure that represents the total area of the figure is: C. 440 ft2.
How to find the total area?The rectangle is formed by the two parallel sides, which are 16 feet long.
The height= 22 feet.
The area of the rectangle = 16 feet x 22 feet
The area of the rectangle = 352 square feet.
The triangle is formed by the vertex, the perpendicular height, and the 4-foot side. The area of a triangle is (base x height) / 2.
Since the base of this triangle is 8 feet and the height is 22 feet.
The area of the triangle = (8 x 22) / 2
The area of the triangle= 88 square feet.
The total area of the composite figure is :
Total area = 352 square feet + 88 square feet
Total area = 440 square feet
Therefore the correct option is C.
Learn more about total area here:https://brainly.com/question/16519513
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What is the circumference of a circle with a radius of 7 feet? Use 22 over 7 for π.
22 feet
44 feet
154 feet
616 feet
Answer:
44 feet because add it up and it's 7+22+7 and tt
please answer these questions below in the picture.
Simplify each fraction.
Answer:
15)4/7
16)1/3
17)1/3
18)18/23
19)1/7
20)1/2
21)11/15
22)1/3
23)1/5
24)6/7
25)2/15
26)7/12
27)1/3
28)2/3
29)5/7
30)2/5
Step-by-step explanation:
15) divide by 9 and get 4/7
16) divide by 9 and get 1/3
17) divide by 6 and get 1/3
18) divide by 3 and get 18/23
19) divide by 4 and get 1/7
20) divide by 12 and get 1/2
21) divide by 36 and get 11/15
22) divide by 40 and get 1/3
23) divide by 36 and get 1/5
24) divide by 18 and get 6/7
25) divide by 8 and get 2/15
26) divide by 12 and get 7/12
27) divide by 12 and get 1/3
28) divide by 18 and get 2/3
29) divide by 36 and get 5/7
30) divide by 12 and get 2/5
Write equivalent fractions for 2/3 and 3/5 using 15 as the common denominator
Answer:
10/15 and 9/15
Step-by-step explanation:
2/3*5/5 and 3/5*3/3
10/15 and 9/15
Answer:
2/3: 10/15 3/5: 9/15
What's the mixed fraction of -35 over 24 (-35/24)?
Answer:
-1 11/24
Step-by-step explanation:
please help, this is my second time posting this image. PLEASE HELP ASAP!
Answer: 124,RS
Step-by-step explanation:
Side RS = 33 units
Equation:
2*(5y-2+4y+1)=124
y=7
So RS=
5*7-2=33 units
What number is represented by point A?
A number line going from 0 to 1. There are 4 equal spaces between 0 and 1. Point A is on the mark to the left of 1.
One-fourth
One-third
Three-fourths
Four-thirds
Answer:
3/4 or Three-fourths
Step-by-step explanation:
1. The number 'A' is between 0 and 1, indicating that its a fraction.
2. We see that there are 4 spaces between 1 and 0.
3. 'A' is on the third space.
Therefore, the number will be marked space/total no. of spaces
(If you find it confusing, try a few similar questions for practice.)
Hope it helps :)
Pls considering giving this a gud rating n marking it the brainliest <3
I need help …… Please
I’ll also give your brainliest
Answer: x=10
Step-by-step explanation: