Answer: C. How many mountain ranges are in the U.S.
Step-by-step explanation:
A statistical question first of all has to have a quantitative response i.e., answers should be in numbers.
The only two questions here that would yield a numeric answer are options C and D.
Furthermore, a statistical question has variability in it which means that the answer is based on multiple observations not just one. The observations in option C are mountain ranges and as the question requires finding out details about multiple mountain ranges, this is a statistical question.
This is opposed to option D which addresses issues surrounding just one mountain.
At the start of a fair, there are 500 tickets inside the tombola drum. There are 75 winning tickets available. What is the probability that a)The first ticket taken out of the drum is a winning ticket? b)The second ticket taken out of the drum is also a winning ticket (HOTS)
Answer:
A 4 digit PIN is selected. What is the probability that there are no repeated digits?
There are 10 possible values for each digit of the PIN (namely: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9), so there are 10 × 10 × 10 × 10 = 104 = 10000 total possible PINs.
To have no repeated digits, all four digits would have to be different, which is selecting without replacement. We could either compute 10 × 9 × 8 × 7, or notice that this is the same as the permutation 10P4 = 5040.
The probability of no repeated digits is the number of 4 digit PINs with no repeated digits divided by the total number of 4 digit PINs. This probability is
2hours to 1day as a ratio in its simplest form
Answer:
Step-by-step explanation:
convert 1 day into hours
1 day=24 hour
2/24
=1/12
1 day = 24 hours
So,
2 hours : 1 day2 hours : 24 hours1 : 12What is the measure of the angle
Answer:
28.566
Step-by-step explanation:
you use the pythagorean theorem which is a^2 + b^2 = c^2 and plug in those numbers into the equation solving for a. hope this helped!
please help meeeeeeeeeeeee
Answer:
First Problem: 9
Second Problem: Not, Is, Is, Not, Not
Third Problem: n = 18
Step-by-step explanation:
First Problem: [tex]3^{6+4}/3^{8}[/tex] =3^2 = 9
Second Problem: 11^24
Third Problem: 7^30/7^12=7^n
A table of values of a linear function is shown below.
Find the slope and y-intercept of the function's graph, and find the equation for the function.
Which equations have no real solution but have two complex solutions? A 3x>2-5=-8 b 2x>2=6x-5 c 12x=9x>2 +4 d -x>2 - 10x =34
Answer:
[tex]3x^2-5x=-8[/tex]
[tex]2x^2=6x-5[/tex]
[tex]-x^2-10x=34[/tex]
Step-by-step explanation:
The equations are:
[tex]3x^2-5x=-8[/tex]
[tex]2x^2=6x-5[/tex]
[tex]12x=9x^2+4[/tex]
[tex]-x^2-10x=34[/tex]
(a) [tex]3x^2-5x=-8[/tex]
Add 8 to both sides
[tex]3x^2 - 5x + 8 =0[/tex]
To do this, we simply calculate the discriminant (d) using:
[tex]d =b^2 - 4ac[/tex]
If [tex]d < 0[/tex]
Then it has complex roots
Where: [tex]a = 3; b = -5; c = 8[/tex]
[tex]d = (-5)^2 - 4 * 3 * 8[/tex]
[tex]d = 25 - 96[/tex]
[tex]d = -71[/tex]
[tex]-71 < 0[/tex] --- complex root
(b) [tex]2x^2=6x-5[/tex]
Equate to 0
[tex]2x^2 - 6x + 5 = 0[/tex]
[tex]d =b^2 - 4ac[/tex]
[tex]d = (-6)^2 - 4 * 2 * 5[/tex]
[tex]d = 36 - 40[/tex]
[tex]d =-4[/tex]
[tex]-4 < 0[/tex] --- complex root
(c) [tex]12x=9x^2+4[/tex]
Equate to 0
[tex]9x^2 - 12x + 4 = 0[/tex]
[tex]d =b^2 - 4ac[/tex]
[tex]d = (-12)^2 - 4 * 9 * 4[/tex]
[tex]d = 144 - 144[/tex]
[tex]d = 0[/tex] ---- real roots
(d) [tex]-x^2-10x=34[/tex]
Equate to 0
[tex]-x^2 - 10x - 34 = 0[/tex]
[tex]d =b^2 - 4ac[/tex]
[tex]d = (-10)^2 - 4 * (-1) * (-34)[/tex]
[tex]d = 100 - 136[/tex]
[tex]d = - 36[/tex]
[tex]-36 < 0[/tex] ---- complex root
Can somebody please please pleaseeee answer this? thank you so much you mean the world to me
4(x-11)=19 solve for x
Answer:
x = 63/4 or 15 3/4
Step-by-step explanation:
4(x-11)=19
Distribute
4x -44 = 19
Add 44 to each side
4x-44+44 = 19+44
4x = 63
Divide by 4
4x/4 = 63/4
x =15 3/4
Answer:
[tex]\huge\boxed{Answer\hookleftarrow}[/tex]
[tex]4(x - 11) = 19 \\ 4x - 44 = 19 \\ 4x = 19 + 44 \\ 4x = 63 \\ x = \frac{63}{4} \\ x = 15.75[/tex]
✐ The value of x is 63/4 (in fraction form) OR 15.75 (in decimal form).
ʰᵒᵖᵉ ⁱᵗ ʰᵉˡᵖˢ
# ꧁❣ RainbowSalt2²2² ࿐
Please help!!! Will give brainliest!
Answer:hhhhhhhhhbbbbb
Step-by-step explanation:
44444444
Please help!!
I'll give brainlist!
Step-by-step explanation:
Perpendicular : means two lines meet at 90°
1) angle B = 90° - 50°
= 40°
2) Angle D = 90° - 30°
= 70°
I NEED THIS ANWER ASAP
Electric guitar kits originally cost d dollars online. You buy the kits on sale for 50% of the original price, plus a shipping fee of $4.50 per kit.
After painting and assembly, you sell each guitar online for (1.5d + 4.5) dollars. Find your profit on each guitar sold
Answer:
your profit is Double the price that you bought the kits
Step-by-step explanation:
x= cost of kit
you buy it x/2
x/2 + 4.5 .... (1)
x + x/2 +4.5 .... (2)
let x = 40
40/2 + 4.5 = 24.5
40 + 40/2 + 4.5 = 64.5
64.5 - 24.5 = 40
so
you buy it in x/2 = 40/2 = 20
and sell it in x = 40
40/20 = 2
your profit is Double the price that you bought the kits
The profit is Double the price that you bought the kits.
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
We have been given that the cost of the kits on sale for 50% of the original price, plus a shipping fee of $4.50 per kit.
Let x be the cost of kit.
Therefore,
x/2 + 4.5 .... (1)
x + x/2 +4.5 .... (2)
let x = 40
40/2 + 4.5 = 24.5
40 + 40/2 + 4.5 = 64.5
64.5 - 24.5 = 40
Therefore, buy it in x/2 = 40/2 = 20
and sell it in x = 40
40/20 = 2
Hence, the profit is Double the price that you bought the kits.
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An art teacher bought a pack of 96 drawing sheets.She kept aside 12 sheets for later use and distributed the remaining equally among 6 students. How many sheets did each student get?
Answer:
14
Step-by-step explanation:
First, find out how many she had to distribute
96 - 12 = 84
Now divide 84 by the number of students
84/6=14
the coordiantes of three vertices of a square are (4,14), (10,14), and (4,8). what are the coordinates of the missing vertex
Answer:
(10, 8)
Step-by-step explanation:
The missing vertex can be found by plotting the given coordiantes on a graph.
Susan has 4 chickens, and over the past two weeks, she has gotten 3 eggs per day. What is the experimental probability that she will get 3 eggs tomorrow?
Answer:
[tex]Pr(egg) = \frac{3}{14}[/tex]
Step-by-step explanation:
Given
[tex]Days = 14[/tex] --- 2 weeks
[tex]Eggs = 3[/tex] --- daily
Required
The experimental probability of getting 3 eggs tomorrow
This is calculated as:
[tex]Pr(egg) = \frac{Eggs}{Days}[/tex]
Substitute values for eggs and days
[tex]Pr(egg) = \frac{3}{14}[/tex]
Use long division to find the quotient below.
(2x3 + x2 + 25) /(2x+5)
Answer:
x^2 -2x +5
Step-by-step explanation:
x^2 -2x +5
----------------------------------------------------------
2x + 5 / 2x^3 + x^2 + 0x + 25
-(2x^3 + 5x^2)
----------------------------
-4x^2 + 0x
-( -4x^2 - 10x )
-----------------------------------------
10x + 25
-(10x + 25)
---------------------------
0
The desired quotient is x^2 -2x +5
Solve for r.
0.5(r +2.75) = 3
Answer:
r = 3.25
Step-by-step explanation:
Start by eliminating the decimal fraction 0.5: 2(0.5)(r + 2.75) = 2(3) = 6
Then we have r + 2.75 = 6.
Isolate r by subtracting 2.75 from both sides. This leaves us with
r = 6 - 2.75 = 3.25.
r = 3.25
answer pls with a detailed explanation
Answer:
SA = 225 cm²
Step-by-step explanation:
The given pyramid dimensions are;
The length of the rectangular base of the pyramid, l = 12 cm
The width of the base, w = 6 cm
The area of the rectangular base, Aₐ = 12 cm × 6 cm = 72 cm²
The height of one of the triangles forming the side of the pyramid, h₁ = 8 cm
The base length of the above triangle, b₁ = 12 cm
The area of the above triangle, A₁ = (1/2)×12 cm × 8 cm = 48 cm²
The height of the other of the triangles forming the other side of the pyramid, h₂ = 9.5 cm
The base length of the above triangle, b₂ = 6 cm
The area of the above triangle, A = (1/2) × 9.5 cm × 6 cm = 28.5 cm²
The surface area of the pyramid, SA = Aₐ + 2 × A₁ + 2 × A₂
Therefore;
SA = 72 cm² + 2 × 48 cm² + 2 × 28.5 cm² = 225 cm²
SA = 225 cm²
Can you help me with these questions
Answer:
7) Unfilled dot at 5 with a line going right
8) A filled dot at 8 with a line going right
9) Unfilled dot at 22 with a line going left
10) A filled dot 13 with a line going left
11) x < 9
12) x > 14
13) x ≤ 11
14) x ≥ 7
Step-by-step explanation:
> means greater than
≥ means greater than or equal to
< means less than
≤ means less than or equal to
If something is greater than the given number then the variable increases in value and will be on the right side of the number line
If something is less than the given number then the variable decreases in value and will be on the left side of the number line
If a variable is < or > the dot is unfilled because it does not include that number
If a variable is ≤ or ≥ the dot is filled because it includes the given number
The volume of a cube is 571.787 cubic inches. What is the length of each side of the cube?
Answer:
8.8in
Step-by-step explanation:
cube 571.787
(3/5x + 4) + (1/5x -1)
Answer:
4/5x+3
Step-by-step explanation:
remove the useless parenthesis, then calculate the x sum then the normal numbers sum
WHich of the following has the steepest slope?
a. y = -4x + 1
b. y = 2x + 3
c. y = x+6
d. y = -3x - 4
Answer: Choice A)
y = -4x+1
=======================================
Explanation:
The general format of a linear equation can be written as y = mx+b
m = slope
b = y intercept
The steepest slope is the value of m that is furthest away from zero. If m > 0, then we're looking for the largest value of m or value to the right of 0. If m < 0, then we're trying to get as left as possible.
Of the choices we have, choice A has the m value furthest from 0. If you want, you can make each slope positive and then compare to see which slope is largest.
A parabola with the equation y=a(x-b)^2+c has a minimum of (-2,1) and a y-intercept of 5. What are the values of a, b and c? What are the x-intercepts?
Answer: 3^15
Step-by-step explanation: carry the one to the 5 divide by the third and multiply the fractions , find the mean ( average ) of the mode and square that to find your a b and c values
¿Qué es un binomio al cuadrado perfecto?
Un binomio al cuadrado es una suma algebraica que se suma por sí misma, es decir, si tenemos el binomio a + b, el cuadrado de ese binomio es (a + b) (a + b) y se expresa como (a + b)2. ... Se le llama cuadrado perfecto, porque el resultado de su raíz cuadrada siempre es un binomio.
Factor the expression 35x – 7.
A) -7(5x – 1)
B) -7(5x + 1)
C) 7(5x + 1)
D) 7(5x – 1)
Answer:
D) 7(5x-1)
Step-by-step explanation:
35x -7
7*5x -7*1
7(5x-1)
Answer:
D) 7(5x-1)
Step-by-step explanation:
35x-7
7(5x-1)
Show all work. Write the equation of the line in slope intercept form (-5, -5) & (-1, 3)
Answer:
y=2x+14
Step-by-step explanation:
m=3-(-5)=2
-1-(-5)
so the slope is 2
to write the equation
y-y1=m(x-x1)
we will take the mid
-5+(-1)=-6
-5+3=2
y-2=2(x-(-6))
y-2=2x+12
y=2x+14
Answer:
y =2x + 5
Step-by-step explanation:
y2 - y1 / x2 - x1
3 - (-5) / -1 - (-5)
8 / 4
2
y = 2x + b
3 = 2(-1) + b
3 = -2 + b
b = 5
(trigonometry) solve for x
Answer:
x°=40.7°
Step-by-step explanation:
Sin(x°)=15/23
x°=Sin^-1(15/23)=40.7°
I need correct answers asap, if you have Inst4gr4m and you're good at math and can help me with 28 m0re questions, I'll be so much more than thankful
Answer:
6 hours
Step-by-step explanation:
Research is 5%, Games is 25%, so the diffrence is 20%
20% of 30 hours = 30 x2/10 = 6 hours
Tremaine played 6 hours more video games than research.
Answer:
F
Step-by-step explanation:
We can use a proportions to solve this problem:
time of researches (in percentages 100% is used to indicate the total)
5 : 100 = x : 30
x = (5 * 30)/ 100 = 1.5
time of games
25 : 100 = x : 30
x = (25 * 30)/100 = 7.5
7.5 - 1.5 = 6 hours
Help me find answer ASAP please
Answer:
C
Step-by-step explanation:
thanks to the given informations we can say that the right triangle is half of an equilater one.
the height of the triangle can be find by multiplying the smallest leg with √3
so
x√3 = 8
x = 8/√3
that can be expressed as 8√3/3
8√3
3
Step-by-step explanation:
This triangle is 30-60-60 and to get side 8 is equal to x√3
A part of the city of New Orleans is 6 feet below sea level. We can use "-6 feet" to describe its
elevation, and "|-6 feet" to describe its vertical distance from sea level. In the context of
elevation, what would each of the following numbers describe?
a.
25 feet
b.
125 feet
I
C.
-8 feet
d.
1-80 feet
The elevation of a city is different from sea level by 10 feet. Name the two elevations that the
Answer:
[-8]
Step-by-step explanation:
An absolute value of |x| {modulus of x} is the value of a real number x. The option A and C represents elevation, while B and D represents vertical distance from sea level.
What is an Absolute Value?An absolute value of |x| {modulus of x} is the value of a real number x, the value we get is always a non-negative number, for example, |-5| will give 5, also, |5| will give 5 as well.
Given that you can use "-6 feet" to describe its elevation, and "|-6 feet|" to describe its vertical distance from sea level. Therefore, each of the number will describe the following things.
A. 25 feet → 25 feet above sea level
B. |25| feet → 25 feet from sea level
C. -8 feet → 8 feet below sea level
D. |-8| feet → 8 feet from sea level
Hence, The option A and C represents elevation, while B and D represents vertical distance from sea level.
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A researcher reports an F-ratio with df between = 3 and df within = 40 from an independent-measures ANOVA. How many treatment conditions were compared in the experiment?
There were 4 treatment conditions compared in the experiment.
When using independent-measures ANOVA (Analysis of Variance), the F-ratio is determined by contrasting the variability within and between treatment conditions.
The ratio of these two variances is known as the F-ratio.
Degrees of freedom (df) within a treatment condition are denoted as df within, and df between denotes the df between treatment conditions.
The formula for calculating the F-ratio is:
F = (Variance between groups) / (Variance within groups)
Given that the df between = 3 and df within = 40, we can use this information to find the number of treatment conditions (groups) compared in the experiment.
The number of treatment conditions (groups) can be calculated using the formula:
Number of groups = df between + 1
Therefore, in this case:
Number of groups = 3 + 1 = 4
So, there were 4 treatment conditions compared in the experiment.
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