Part A)
His sample only involves days during the summer (if Devin is in the northern hemisphere), which would mean that the high temperatures he'll record are likely to be higher than the average. Therefore, the sample mean he computes does not represent the average high temperature for the whole year.
----------------------------------------
Part B)
To correct his mistake, he needs to sample every day of the year. Or he could sample a few days of each month (say the first ten days of each month). That way the entire year is better represented. The other seasons of spring, fall and winter are included now.
Someone please help thank you
Answer:
Step-by-step explanation:
[tex]9+3x\leq 24\\3x\leq 15\\x\leq 5[/tex]
So use closed (dark) circle and draw line to left from 5.
Plz sove and u will earn 30pts
Answer:
Pg. 1:
Triangle A: Obtuse
Triangle B: Obtuse
Triangle C: Acute
Triangle D: Right
Pg. 2:
Question 1: Figure A
Question 2: None
Question 3: Figure C
Pg. 3:
Triangle A: Scalene
Triangle B: Equilateral
Triangle C: Isosceles
Triangle D: Isosceles
Pg. 4:
A: Triangle
B: Circle
C: Rectangle
Hope that helped!
Step-by-step explanation:
An employee puts $3,000 into a retirement fund that offers 7% interest compounded annually. The employee makes no other deposits or withdrawals. Which amount is closest to the interest that the employee will have earned after 4 years?
Answer:
$840
Step-by-step explanation:
Given data
Principal = $3000
Rate= 7%
Time= 4 years
The expression for the simple interest is
SI= PRT/100
substitute
SI= 3000*7*4/100
SI= 30*7*4
SI= $840
Hence the interest is $840
The point W(-5, 5) is translated 5 units right and 9 units down. What are the coordinates of the resulting point, W′?
Answer:
W(0,-4)
Step-by-step explanation:
By translating right, we add the translation unit to the given coordinate of the x-axis
By translating downwards, we have to subtract the translation unit from the given coordinate of the y-axis
So from what we have here;
We are going to add 5 to the x-axis value and subtract 9 from the y-axis value
Thus, we have it that;
W’ (-5 + 5, 5 -9)
W’ (0,-4)
640 divided by 16= 16 divided by 16 =1
a window is shaped like a semicircle and has diameter of 2 feet which expression describes the perimeter in feet of the window
Answer:
5.14 ft
Step-by-step explanation:
The perimeter of a circle is diameter X 3.14. since its half a circle, take the radius and multiply by 3.14. Since the radius is 1, the answer is pi itself. Then add 2 feet for the flat side of the semi-circle
Can someone plzzz help
Answer:
sorry i dont know
Step-by-step explanation:
If m∠2=4x and m∠4=3x- 8. I have to fine m∠1
Answer:
c
Step-by-step explanation:
A survey showed that 90% of students would select roller coasters as their favorite ride at an
amusement park. Out of 5,000 students predict how many wouldselect roller coasters as
their favorite ride?
Answer:
4500 students
Step-by-step explanation:
5000 / 100 = 50
50 x90 = 4500 :D
When a graph is symmetric about the origin, it is an function.
When a graph is symmetric about the y-axis, it is an function.
A function is considered if f(-x) =
f(x), and it is considered
=
if f(-x) = -f(x).
Answer:
odd; even; even; odd
Step-by-step explanation:
The answers are odd, even, even, and odd respectively the graph is symmetric about the y axis it is an even function.
What is a function?It is defined as a special type of relationship and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.
We know when the graph is symmetric about the origin it is an off function.
When the graph is symmetric about the y axis it is an even function.
When f(-x) = f(x) it is an even function
When f(-x) = -f(x) it is an odd function.
Thus, the answers are odd, even, even, and odd respectively the graph is symmetric about the y axis it is an even function.
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What is the final amount if 700 is increased by 4% followed by a further 3% increase?
Give your answer rounded to 2 DP
The distance, y, in miles, traveled by a car for a certain amount of time, x, in hours, is shown in the graph below:
Find the volume of a right circular cylinder that has a radius of 3 inches and a height of 8 inches.
Answer:
Volume, V = 75.41 cubic inches.
Step-by-step explanation:
Given the following data;
Radius, r = 3 inches
Height = 8
To find the volume of the right circular cylinder;
Mathematically, the volume of a right circular cylinder is given by the formula;
V = πr²h
Where;
V is the volume of a right circular cylinder.r represents the radius of the cylinder.h represents the height of the cylinder.Substituting into the formula, we have;
Volume, V = 3.142 * 3 * 8
Volume, V = 3.142 * 24
Volume, V = 75.41 cubic inches.
Solve the system by elimination.
{y= 16x+44
{y= -x^2 +8x+28
Answer:
x= -4, y= -20
Step-by-step explanation:
y= 16x+44
(y= -x²+8x+28) * (-1)
multiply both sides by -1
y= 16x+44
-y= x²-8x-28
add the equations to eliminate y
y-y= x²+16x-8x+44-28
0= x² +8x +16 this is the same with (x+4)²=0 so x= -4
go back to the first equation and substitute x with -4 and solve for y
y= 16*(-4) +44 = -64+44 = -20
heyy! i’ll give brainliest please help
Answer:
A
Step-by-step explanation:
Just A!
Answer:
Step-by-step explanation:
Never capitalize the seasons
THIS IS AREA OF CIRCLES PLS ANSWER
Answer:
75ft^2
Step-by-step explanation:
A = pi*r^2
The circle already gives the diameter and the diameter is two times the radius, so if you were to divide the diameter by two, you would get 5.
Knowing the radius is 5 and seeing how they replaced pi with 3 we can set up the equation.
3*(5)^2 = A
Simplify
3*25
Multiply
Area=75ft^2
Write 4x2 = 12 in standard form.
Answer: 4x²−12
Step-by-step explanation:
mark as brainliest hope this helps
what is the midpoint of PQ?
Answer: (1, 3)
Step-by-step explanation: The endpoint of PQ are respectively (-2, -2), and (4, 8). Add them up and divide by 2 to find midpoint≈ 1,3
Determine the approximate value of ø
a)41.89
b) 48.20
c)33.70
d)56.30
Answer:
B,48.2
Step-by-step explanation:
To solve this we need to use SOH, CAH, TOA
we have the adjacent and hypotonouse so it's easiest to use CAH
let theta (angle) = x
cos(x)=4/6
to cancel the cos mulitply both sides by cos^-1 (2nd --> cos)
x=48.1896851
which rounds to 48.2
The graph below shows the number of homework questions Kate has
left based on the amount of time she has been working. Find the unit rate
demonstrated in the graph. *
A. -0.5
O O O
B. -1.25
C.-2.5
D. 0.5
Answer:
B
Step-by-step explanation:
Because its going down so its negative.
Plus, its 5 down four to the right or 5/4=1.25
So the answer is -1.25
Answer:
B
Step-by-step explanation:
A school received a $7,563 grant for new supplies to be evenly distributed among 18 classroom teachers. How much money will each classroom teacher receive, to the nearest dollar?
$42
$43
$420
$430
$420
Step-by-step explanation:
$7,563/18
=$420.1667
=$420.17 (to the nearest dollar means to the nearest full dollar and since 17 cents is not up to 50, you remove it )
= $420
If a candy machine contains 76 green candies, 42 orange candies, 58 red
candies, and 24 yellow candies, what is the probability that a candy chosen at
random will be red?
Answer:
P(candy chosen is red) = 58/200
Step-by-step explanation:
0.29 is the probability that a candy chosen at random will be red.
What is probability?The probability exists the branch of mathematics involving numerical descriptions of how likely an event exists to happen, or how likely it exists that a proposition stands true. The probability of an event exists in a number between 0 and 1, where, roughly speaking, 0 reveals the impossibility of the event, and 1 demonstrates certainty.
A machine contains = 76 green candies
B machine contains = 42 orange candies
C machine contains = 58 red candies
D machine contains = 24 yellow candies
Probability = 58 / 76 + 42+ 58+ 24
= 58 / 200
= 0.29
0.29 is the probability that a candy chosen at random will be red.
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Which equation best represents this data set?
{(-4,-4.8), (-3, -8.2), (-2,-9.1), (-1, -8.1), (0, -4.7), (1,0.3)}
y= 1.1x – 4.2
y= 1.1x² + 4.2x – 4.9
y= 1.1x² + 4.2x + 4.9
y = 1.1x + 4.2
Answer:
Y= 1.1x^2 + 4.2x - 4.9
Step-by-step explanation:
It told me I got it correct.
An equation is formed of two equal expressions. The equation that passes through each of the data sets is y= 1.1x² + 4.2x – 4.9. Hence, the correct option is B.
What is an equation?An equation is formed when two equal expressions are equated together with the help of an equal sign '='.
To find the equation that best represents this data set, plot each of the data on the graph, and plot each of the equations as well.
The other way is to check if all the data point when substituted into the equation than it satisfies the equation or not.
Thus, the equation that passes through each of the data sets is y= 1.1x² + 4.2x – 4.9. Hence, the correct option is B.
Learn more about Equation:
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Factorise fully [tex]3y^{3} -12y[/tex]
Answer:
[tex] {3y}^{3} - 12y \\ = 3y( {y}^{2} - 4) \\ = 3y( {y}^{2} - {2}^{2} ) \\ = 3y(y - 2)(y + 2) \\ = 3y(y + 2)(y - 2)[/tex]
a^2-b^2=(a+b)(a-b)
a=y b=2
3y(y+2)(y-2)
When you use a paint can opener to a can of paint you use the paint can opener as a simple machine called a _____ class______
Answer:
FIrst blank: lever
And, did you mean to put class?
Step-by-step explanation:
HELPpppp MeeeeE PLZ!!!!!!!!
Answer:
answer is a
Step-by-step explanation:
Given: ΔABC
Prove: The sum of the interior angle measures of ΔABC is 180°.
1. Let points A, B, and C form a
triangle.
given
2. Let be a line passing
through B, parallel to ,
with angles as labeled.
defining a parallel line and labeling angles
3.
4. m∠1 = m∠4, and
m∠3 = m∠5.
Congruent angles have equal measures.
5. m∠4 + m∠2 + m∠5 = 180°
angle addition and definition of a straight angle
6. m∠1 + m∠2 + m∠3 = 180°
substitution
What is the missing step in this proof?
A.
Statement: ∠4 ≅ ∠5, and ∠1 ≅ ∠3.
Reason: Alternate Interior Angles Theorem
B.
Statement: DE is parallel to AC.
Reason: AB is a transversal cutting DE and AC.
C.
Statement: ∠1 ≅ ∠4, and ∠3 ≅ ∠5.
Reason: Alternate Interior Angles Theorem
D.
Statement: ∠1 ≅ ∠4, and ∠3 ≅ ∠5.
Reason: ∠1 and ∠4, and ∠3 and ∠5 are pairs of supplementary angles.
Answer:
B.
Statement: DE is parallel to AC.
Reason: AB is a transversal cutting DE and AC.
Step-by-step explanation:
I'm not 100% sure tho, but DE and AC are parallel
PLEASEEEE HELP ME WITH THIS ALGEBRA 1
Question 2: A family of 4 buys airline tickets online. Also, travel insurance costs $50
per ticket. The family is charged a total of $1,400.
Wilie an equation that can be used to find c, the cost of a ticket.
Answer:
Step-by-step explanation:
total cost = tickets( c) +50
1400 = 4 (c) + 50
1350 = 4 (c)
337.50 = c
Zoe and hannah share tips in the ratio 3:7 last week zoe recieved £24 how much did hannah recive last week
Answer:
56
Step-by-step explanation:
Zoe and Hannah shared tips in the ratio
3:7
Last week Zoe received $24
Hence the amount received by Hannah can be calculated as follows
3/7= 24/x
168= 3x
x= 168/3
= 56
Hence Hannah received €56
I just need question number 1, asap though, please! I need it by 12pm est
Answer: tanA=3/4
Step-by-step explanation: If cosA=4/5 then
sinA=√(1−cos2A) {Because sin^2A+cos^2A=1}
=>sinA=√(1−16/25)
=>sinA=√(9/25)
=>sinA=3/5
Now as tanA=sinA/cosA
=>tanA=3/5×5/4 {Because 1/cosA=5/4}
=>tanA=3/4