Answer:
When it is small & when the sample has things that are different from the population.
Step-by-step explanation:
A small sample has less chance of accurately reflecting a population & too many variables can also negatively influence the study.
Answer:
A and C
when the population is small and when the sample contains proportions of items/events/people that are different from those of the population
Step-by-step explanation:
Calculate the area of the figure below using the following information:
Area of triangle ABC = 7.95 square units
Area of triangle ACD = 9.8 square units
Area of triangle AED = 8.75 square units
Figure A is a scale image of figure B. Figure A maps to figure BBB with a scale factor of 2/7. What is the value of x?
I cant comment since it wont let me...
So im asking what shape is????
Solve by elimination:
6x - 6y = 6
3x - 6y = 15
Please Help!!! NEED ANSWER ASAP, HAVE MATH TEST DUE!!!
Answer:
x=-3, y=-4
Step-by-step explanation:
(2x^3y^5)^3(x^11y^4)
helpp
Step-by-step explanation:
I can't understand your answer
I paid $42 for six hot chocolate bombs what is the unit rate price for one item 
Answer:
$7
Step-by-step explanation:
What is an equation in point-slope form of the line that passes through the point (6,-2) and has a slope of 3?
Answer:
y+2=3(x-6)
Step-by-step explanation:
y-y1=m(x-x1)
y-(-2)=3(x-6)
y+2=3(x-6)
I need this answer ASAP
Answer:
B) 40
Step-by-step explanation:
2:10 2 out of 10
40:200 40 out of 200
A certain flagpole that is 286 feet tall cast a shadow 137 feet long. Find the angle of elevation of the sun.
Answer: The angle of elevation of the sun [tex]=64.40^{\circ}[/tex]
Step-by-step explanation:
According to the trigonometry,
In a right triangle,
[tex]tan A=\dfrac{Perpendicular}{Base}[/tex]
Let angle of elevation of the sun = x
From the given figure, Perpendicular = 286 feet
Base = 137 feet
[tex]\tan x =\dfrac{286}{137}\\\\ \tan x = 2.0876\\\\ x=\tan^{-1}(2.0876)\\\\ x=64.40^{\circ}[/tex]
The angle of elevation of the sun [tex]=64.40^{\circ}[/tex]
1. Find the area of the rectangle whose dimensions are:
(i) length 24.5 m, breadth 18 m (ii) length
12.5 m, breadth = 8 dm.
Answer:
i. Area(A)=L×B
24.5m×18
441m²
Evaluate 81.4 % of 58.81 km Give your answer rounded to 2 DP.
Answer:
47.87
.................
Determine the measure of angle A, B, and C in triangle ABC. If m∠A=(x-10)°,m∠B=(2x-50)°,and m∠C=x°
Answer:
m∠A = 50°
m∠B = 70°
m∠C = 60°
Step-by-step explanation:
Determine the measure of angle A, B, and C in triangle ABC. If m∠A=(x-10)°,m∠B=(2x-50)°,and m∠C=x°
In a Triangle, the sum of the interior angles of a triangle = 180°
Step 1
We solve for x
Hence:
m∠A + m∠B + m∠C= 180°
(x-10)°+ (2x-50)°+ x° = 180°
x - 10 + 2x - 50 + x = 180°
4x - 60 = 180°
4x = 180° + 60°
4x = 240°
x = 240°/4
x = 60°
Step 2
Solving for each measure
x = 60°
m∠A=(x-10)°
= 60° - 10°
= 50°
m∠B=(2x-50)°
= 2(60)° - 50°
= 120° - 50°
= 70°
m∠C=x°
= 60°
4.25m + 7 + 6.75m - 11 =
Answer: 7
Step-by-step explanation:
4.25+6.75=11
11+7=18
18-11=7
Answer:
11m-4
Step-by-step explanation:
Add 4.25m and 6.75m= 11m
7+-11= -4
what is a decimal that is equivalent to the fraction 93/100
Every year Ethan earns 38,428. Each year he spends 21,728 on expenses. How much money should he have left over?
Answer:
16,700
Step-by-step explanation:
Given that,
Earning of Ethan = 38,428
Ethan spends 21,728 on expenses.
We need to find the amount of money he has left over. It can be calculated as follows :
Left money = Earning - Spent
= 38,428 - 21,728
= 16,700
So, he has left over 16,700.
Find the incorrect step in each solution and explain whit it is incorrect.
Answer:
Step-by-step explanation:
Mai:
She subtracted 5x instead of distributing. This is incorrect, because since it is in ( ), it has to be multiplied by 3.
Correct: 3(5x + 9) = 15x + 27
12x + 3 = 15x + 27
Noah:
Added 15x instead of subtracting. This is incorrect, because to combine like terms on each side you would add a negative number and subtract a positive number.
Correct: 12x + 3 = 15x + 27
12x - 15x = 27 - 3
-3x = 24
x = 24 / -3
x = -8
The cylinder shown here has a height of 7 cm and a radius of 4 cm
How many cubic centimeters of fluid can fill this cylinder?
Answer: 175.9 (1decimil place)
Step-by-step explanation: Volume of cylinder= πr2h
V= π(4)x2x7= 175.9291886 (175.9 1dp) cm cubed.
Can someone please give me the answer to this please:(
I will give the first person who answer it correct a brainliest
I need the answer ASAP!!!!!!!!
You didn't ask a question or put a picture on this
Tanya is n years old today. How old will she be in 5 years
Answer:
n+5
Step-by-step explanation:
Answer:
n + 5 or 5 + n
Step-by-step explanation:
add 5 to n, tanya's current age, to find how old she'll be in 5 years.
since the variable n is not defined, the answer cannot be simplified further than n + 5.
if n had been defined, you would be able to figure out her exact age after 5 years, which would be the fully simplified answer. for example, if n were to equal 10, then tanya would currently be 10 years old. by plugging in 10 for n in n + 5, you would figure out that in 5 years (aka 10 + 5) tanya would be 15.
i hope this helped! have a great day <3
In the diagram below shows the cross section of a bridge with a semi circle hole. If the perimeter of the cross section is 24m. Calculate
A. the length PQ.
B. Area of the cross section ( π =22/7)
Find the sine of ∠E.
Answer:
solution
by using pythagorus theorem
h^2 =p^2 +b^2
10^2 = p^2 +under root 82 squaretherefore p is equal to[tex]3 \sqrt{2} \\ [/tex]
sine E =p/h
=
[tex]3 \sqrt{2} \div 10[/tex]
ABCD ~ FECG
Y=
Please helpp
=========================================================
Explanation:
Notice how EC = 5 doubles to BC = 5+5 = 10
So the larger quadrilateral (ABCD) has side lengths that are exactly twice as long compared to the smaller quadrilateral's sides. We can say the scale factor is 2.
This must mean that side FG = 4 doubles to 4*2 = 8, which is the length of side AD. So that's how we get y = 8.
-----------------------------------
Extra info:
x = 12 because side EF = 6 doubles to this value. w = 120 because the corresponding angles of ABCD pair up with FECG, so we see that angle D = angle G = 120.z = 80 because we solve F+E+C+G = 360 to find that F = 80, which leads to angle A = 80 as well.Length of AD, y = 8
What are similar quadrilateral?Two quadrilaterals are similar if their corresponding angles are equal and also their corresponding sides must be proportional.
Given,
EC = 5
FG = 4
BE = 5
AD = y
ABCD ~ FECG,
then ratio of the corresponding sides will be equal.
BC/AD = EC/FG
(BE + EC)/AD = EC/FG
(5 + 5)/y = 5/4
10/y = 5/4
5y = 40
y = 40/5
y = 8.
Hence, 8 is value of y that is length of AD.
Learn more about similar quadrilaterals here:
https://brainly.com/question/26991730
#SPJ5
2(d − 6) − 3 = 1 solve for d
Answer:
d = 8
Step-by-step explanation:
2(d -6) - 3 = 1
+3 +3
2(d-6) = 4
/2 /2
(d-6) = 2
+6 +6
(d) = 8
d = 8
Answer:
d=8
Step-by-step explanation:
2(d-6)-3=1
Add 3 to both sides:
2(d-3)+3=1+3
Simplify:
2(d-6)=4
Divide both sides by 2:
2(d-6)/2=4/2
Simplify:
d-6=2
Add 6 to both sides:
d-6+6=2+6
Simplify:
d=8
If Jake's height from birth (measured in inches) can be modeled by the Linear Regression Equations y = 4.3x +19, with x representing his age in years after birth What does this slope mean in the context of the problem
HURRY UP ITS TIMED
Which graph shows three points that represent equivalent ratios?
Correct answer gets a brainliest
It will be B.
Hope this helps!
Answer:
A.
Step-by-step explanation:
The points are at 3,1 which 3/1=3, 6,2, which 6/2=3/1, and 9,3, which 9/3=3/1.
(hope this helps!)
A car travels 30 1/5 miles in 2/3 of an hour.What is the average speed in miles per hour of the car
[tex]Your answer=[/tex]
Answer:
The speed of car is 45.3 miles per hour.
pls help with this problem if u do thx <3
======================================
Work Shown:
c = price of coat before discount
0.33c = discount = amount you save
c - 0.33c = original price minus discount = final price
c - 0.33c = 1c - 0.33c = (1-0.33)c = 0.67c = final price
In short, c - 0.33c = 0.67c
They are two ways of expressing the same thing.
You can think of it like saying 100% - 33% = 67%
If you save 33%, then you still have to pay the remaining 67% of the original cost.
-------------
Example:
Let's say the coat is $100 before the discount
c = 100
0.33*c = 0.33*100 = 33 dollars is how much you save
c - 0.33c = 100 - 33 = 67 dollars is the final price
0.67c = 0.67*100 = 67 matches with the previous figure above
Factor b3 +b2 + b + 1.
Answer:
(b+1)(b²+1)
Step-by-step explanation:
Identify the sum of the interior angle measures of a convex octagon.
O 1080°
O 1260°
O 1620°
O 1440°
The sum of the interior angle measures of a convex octagon is 1080. the correct option is A.
What is an octagon?An octagon is an 8-gon, or polygon with eight sides, in geometry. The Schläfli symbol for a regular octagon is 8, and it can also be built as a nearly regular truncated square.
The interior angle will be calculated as,
Angle = (n - 2) x 180
Angle = ( 8 - 2 ) x 180
Angle = 1080
Therefore, the sum of the interior angle measures of a convex octagon is 1080. the correct option is A.
To know more about an octagon follow
https://brainly.com/question/27389561
#SPJ2
Suppose that 20% of students at high school A and 18% of students at high school B participate on a school athletic team. Independent random samples of 30 students from each school are selected and asked if they participate on a school athletic team. Let ˆ p A represent the sample proportion of students at school A who participate on a school athletic team and ˆ p B represent the sample proportion of students at school B who participate on a school athletic team.
What is the value of n A p A ?
What is the value of n A ( 1 − p A ) ?
What is the value of n B p B ?
What is the value of n B ( 1 − p B ) ?
Is the shape of the sampling distribution approximately Normal?
____, these values _____ all at least 10.
Answer:
6 ; 24 ; 5.4 ; 24.6
Step-by-step explanation:
Given that:
Number of samples from each high school = 30
Proportion of students from high school A = 20%
Proportion of students from high school B = 18%
Number of sample A ; n(A) = 30
Proportion of sample A ; p(A) = 0.20
Number of sample B ; n(B) = 30
Proportion of sample B ; p(B) = 0.18
1.)
n(A).p(A) = 30 * 0.20 = 6
2.)
n(A). (1 - p(A))
30 * (1 - 0.20)
30 * 0.8 = 24
3.)
n(B).p(B) = 30 * 0.18 = 5.4
4.)
n(B). (1 - p(B))
30 * (1 - 0.18)
30 * 0.82
= 24.6
Shape of sampling distribution is not approximately normal ;
Both nApA and nBpB are < 10
Think About the Process Van purchased a DVD player on sale. The original
selling price was $175.90. The sale price was $149.62. What is the first step in
finding the percent markdown? Find the percent markdown.
much appreciated if helped :(
Answer:
14.940306992% or 15%
Step-by-step explanation:
To solve for percent or price markdown, you first have to find the difference between the original selling price and the sale price.
$ 175.90 - $ 149.62 = $26.28
Then, find the percentage that $26.28 is of the original selling price. You are decreasing the original by this much to get to the sale price.
$26.28 / $175.90
= 0.14940306992
Finally, multiply by 100 and round up to reach a percentage.
15%