6, 35, 20, 6, 20, 18, 7, 20, 28, 40, find the standard deviation
Answer:
≈11.2
Step-by-step explanation:
Have a good day :)
please help its like 5th grade math
Step-by-step explanation:
vol of 1st cuboid,
=lxbxh
=4cm×6cm×1cm
=24cm³
vol of 2nd cuboid
= lxbxh
=6cm×3cm×1cm
=18cm³
vol of figure=18cm³+24cm³
= 42cm³
2.
Which of the quadratic functions has the narrowest graph?
A. [tex]y=\frac{1}{8}x^2[/tex]
B. [tex]y=\frac{1}{3}x^2[/tex]
C. y = –2x2
D. y = –3x2
Answer:
D. y = –3x2
Step-by-step explanation:
Answer:
y = -3x^2
Step-by-step explanation:
A quadratic function has a leading coefficient which determines its width. When |a| < 1 the graph is wider. When |a| > 1 the graph is narrower. This means y = -3x^2 is the narrowest graph since 3 is the greatest.
Answer:
[tex]C)~y=-3x^2[/tex]---------------------
hope it helps...
have a great day!!
use a formula to find the area of the figure
Answer: C. 13.5
Step-by-step explanation:
9x3= 27
27 divided by 2= 13.5
The formula for the area of a triangle is: A = 1/2 * b * h
In this problem, we are given the base (9 ft) and the height (3 ft). Therefore, we can use the formula.
A = 1/2 * 9 * 3
A = 1/2 * 27
A = 13.5 ft^2
Hope this helps!! :)
If I can paint a wall in 20 min and my friend can paint a wall in 30 min. How many minutes would it take for us to paint a wall working together.
Answer: [tex]12\ \text{min}[/tex]
Step-by-step explanation:
Given
It takes 20 min and 30 min for a person and his friend to paint a wall individually i.e.
In 1 min they cover [tex]\frac{1}{20}[/tex] part and [tex]\frac{1}{30}[/tex] part of wall respectively.
If the work together, 1 minute work is
[tex]\Rightarrow \dfrac{1}{20}+\dfrac{1}{30}\\\\\Rightarrow \dfrac{3+2}{60}\\\\\Rightarrow \dfrac{5}{60}[/tex]
Time required will be reciprocal of it
[tex]\Rightarrow \dfrac{60}{5}=12\ \text{min}[/tex]
classifying quadrilaterals
Answer:
D, E, F
Step-by-step explanation:
Answer:
D and F
Step-by-step explanation:
a parallelogram is a quadrilateral with two sets of parallel sides
a quadrilateral is a shape with 4 edges
the sum of three consecutive number is 63 find the number
The sum of three consecutive number is 63, hence the number is 20.
What is an equation?An equation is an expression that shows the relationship between two numbers and variables.
An independent variable is a variable that does not depend on any other variable for its value whereas a dependent variable is a variable that depend on any other variable for its value.
Let x represent the number. The sum of three consecutive number is 63, hence:
x + (x + 1) + (x + 2) = 63
x = 20
The sum of three consecutive number is 63, hence the number is 20.
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The second doughnut glazing machine can glare 78 dozen doughnuts in
2 hours
Based on this rate, what is the total number of hours it will take the second
machine tolar 135 doren doughnuts Show or explain how you got you
answer
Answer:
t = 3.46 hours, or 3 hours 28 minutes
Step-by-step explanation:
78 dozen donuts in 2 hours immediately reduces to 39 dozen/hour.
Donuts produced as a function of time: D(t), where t is the number of hours the macine runs.
Set D(t) = 135 dozen = (39 dozen/hr)t.
Solving this equation for t, we get:
t = 135/39 hours, or t = 3.46 hours, or 3 hours 28 minutes
HELP, PLEASE I NEED IT! π∆π
Applying the 30-60-90 Theorem, Solve this.
Answer:
'y' would be 24
'x' would be 12[tex]\sqrt{3}[/tex]
Step-by-step explanation:
the ratio of sides in a 30-60-90 triangle is, respectively, 1 : [tex]\sqrt{3}[/tex] : 2
so the side across from the 60 degree angle is [tex]\sqrt{3}[/tex] times the side of the 30°
the side across from the 90 degree angle is double the side of the 30°
so in this problem 'y' would be 24 and 'x' would be 12[tex]\sqrt{3}[/tex]
Answer:
Step-by-step explanation:
take 30 degree as reference angle
using sin rule
sin 30=opposite/hypotenuse
1/2=12/y(do cross multiplication?
12*2=y
24=y
for x
using pythagoras theorem
H^2=P^2+B^2
24^2=12^2+B^2
576=144+B^2
576-144=B^2
432=B^2
[tex]\sqrt{432}[/tex]=B
12[tex]\sqrt{3}[/tex]=B
12[tex]\sqrt{3}[/tex]=X1
Carter needs to wrap seven presents. He lays the ribbon out flat and says that I'll have just enough pieces if I make six equally spaced cuts, I can use one piece for each package. And I won't have any pieces left over. Does he have enough pieces to wrap all the presents?
Answer:
Yes, he has enough pieces to wrap the present
Step-by-step explanation:
Given
[tex]Presents = 7[/tex]
[tex]Cuts = 6[/tex]
Required
Is there enough pieces to wrap all presents
As a general rule;
When a piece is cut in 1 place, you get 2 pieces
When a piece is cut in 2 places, you get 3 pieces
When a piece is cut in 3 place, you get 4 pieces
This implies that:
n cuts gives n + 1 pieces
i.e.
[tex]n \to n + 1[/tex]
So, we have:
[tex]6\ cuts \to (6 + 1) pieces[/tex]
[tex]6\ cuts \to 7\ pieces[/tex]
Hence, there are enough pieces.
Question about forms of quadratics
pls add explanation for brainliest
Answer:
See below...
Step-by-step explanation:
Zeros of the function: [tex]f(x)=(x-8)(x+2)[/tex]
The zeros are 8 and -2
The coordinates of the vertex: [tex]f(x)=(x-3)^2-25[/tex]
The vertex is the point (3, -25)
The y-intercept: [tex]f(x)=x^2-6x-16[/tex]
The y-intercept is -16
The axis of symmetry: [tex]f(x)=(x-3)^2-25[/tex]
The axis of symmetry is x = 3 (it goes through the vertex)
Find the polar equation of the conic with the focus at the pole, directrix x = -5, and eccentricity 2.
Step-by-step explanation:
Given that,
Directrix, d= -5, and eccentricity, e = 2.
The polar equation of the conic is given by :
[tex]r=\dfrac{ed}{1-e\cos\theta}[/tex]
Put all the values,
[tex]r=\dfrac{-5\times 2}{1-2\cos\theta}\\\\=\dfrac{-10}{1-2\cos\theta}[/tex]
As e>1, it is a hyperbola. Hence, this is the required solution.
help please i don’t understand
Answer:
20/29
Step-by-step explanation:
I hope that this 3 will help you understand easily.
I have no clue helppp me plz
Answer:
13 degrees
Step-by-step explanation:
Triangles have to equal to 180 degrees
Answer:
[tex]180 = 154 + 13 + x[/tex]
Step-by-step explanation:
180= 154° + 13° + X
X = 180° - 154°- 13°
X = 13°
The its an ISOCELES triangle
A boy has four slices of pizza. Each slice has an equal number of green pepper pieces. He adds on three green pepper pieces to his slices of pizza and ends up with 27 total pieces of green pepper on it. How many pieces of green pepper were on each slice of pizza in the beginning?
Translate this problem into an equation, using x to represent the number of green peppers on a given slice.
Answer: 6 peppers per slice
Step-by-step explanation:
First we subtract, 27-3= 24
now every single slice has an equal amount of peppers.
24/4=6
hey! please help i’ll give brainliest
Answer:
The answer is D
Step-by-step explanation:
If and Then are italicized
A quadratic function y = f(x) is plotted on a graph and the vertex of the resulting
parabola is (-6,3). What is the vertex of the function defined as
g(x) = f(x - 2) – 5?
Answer:
The vertex of g(x) is (-4, -2)
Step-by-step explanation:
Let's define general translations:
Vertical translation:
For a function f(x), a vertical translation of N units (So the whole graph of f(x) is translated N units in a given direction) is defined as:
g(x) = f(x) + N
such that:
If N is positive, the translation is upwards
if N is negative, the translation is downwards.
Horizontal translation:
Similar than before, for a function f(x) a horizontal translation of N units is written as:
g(x) = f(x + N)
Where, if N is positive, the translation is to the left
If N is negative, the translation is to the right.
Here, we have the transformation:
g(x) = f(x - 2) - 5
This is a transformation that moves the whole graph of f(x):
2 units to the right
5 units downwards.
So, if a point like (x, y) was in the graph of f(x)
After the translation, that point will be (x + 2, y - 5)
Then, if the original vertex was (-6, 3), the new vertex will be:
(-6 + 2, 3 - 5)
(-4, -2)
The vertex of g(x) is (-4, -2)
Janice has a pasta recipe that calls for 2oz. Of cheese for every 3 oz. of cooked pasta find the graph that shows their relationship between cheese and pasta
where is the graph ?
There are 345 rows of flowers in a garden. Each row contains 48 flowers. Find the estimated number of flowers in the garden.
Please give the statements and explanation
Answer:
total no. of rows in garden= 345 each row contains= 48 flowers
total no. of flowers in the garden= 345*48=16560
Answer:
16,560
Step-by-step explanation:
No of rows = 345
No. of flowers in each row = 48
Estimated no of flowers in the garden
= No of rows * No of flowers in each row
= 345*48
= 16,560
A. a car travels for 4 hours and it covers a distance of 50km each hour. How many km does it cover for the four hours?
Step-by-step explanation:
distance covered by car each hour=50km
distance covered by car in four hours =4×50
200kmstay safe healthy and happy...200km for four hours
Just multiply 50km times 4
IM SO CONFUSED! HELP AND EXPLAINNNNNN
Answer:
326.56 sq in
Step-by-step explanation:
SA=2*3.14*4^2+2*3.14*4*9
SA= 100.48+ 226.08
SA= 326.56
Plug numbers in equation and then solve equation. R=4 and h=9.
I need help it’s important because I have to bring up my grade in math
Answer:
B
Step-by-step explanation:
answer:
b
step-by-step explanation:
60% of the books on a bookshelf are english books. If there are 35 english books on the bookshelf, find the number of the books in the book shelf
Answer: 58 books
Step-by-step explanation:
There are 35 English books on the shelf and this constitutes 60% of the total number of books on the shelf.
Denoting the total number as x, the total number is:
35 = 60% * x
x = 35 / 60%
= 58 books
The formula of the area of a square is
Answer:
Step-by-step explanation:
A=lw
Answer:
A = bh
Step-by-step explanation:
you multiply the base length by the height length.
If my answer is incorrect, pls correct me!
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-Chetan K
This scatter plot shows the relationship between the number of sweatshirts sold and the temperature outside.
1) The y-intercept of the estimated line of best fit is at (0,b). Enter the approximate value of the b in the first response box.
2) Enter the approximate slope of the estimated line of best fit in the second response box.
Answer:
Below.
Step-by-step explanation:
1) 245.
2) Approximate slope = -(245-200)/15 = -3.
The y intercept is 250 and the slope is -10/3.
What is equation of a line?The equation of a line is linear in two variables, usually x and y, that is satisfied by points of the line.
We have the following ordered pairs in the line given:
(0, 250) and (30, 150)
Calculating the slope:
m = 150 - 250/ 30 - 0
m = -100/30
m = -10/3
Therefore, the slope is -10/3
Finding the y-intercept:
The equation of a line has the form:
y = mx + b, where m is the slope
Replacing by the values we know:
150 = -10/3 * 30 + b
b = 150 + 100
b = 250
Therefore, the y intercept is 250.
Hence the y intercept is 250 and the slope is -10/3.
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please help me out !! i rlly need it!
Math question is in the picture please help
Find the value of each variable.
a
59
72
A. a = 59°; b = 49°; c = 72°; d = 98°
B. a = 59°; b = 52°; c = 72°; d = 96°
C. a = 118°; b = 49°; c = 144°; d = 98°
O
D. a = 118°; b = 49°; c = 72°; d = 98°
Answer:
[tex]C. a = 118^o; b = 49^o; c = 144^o; d = 98^o[/tex]
Step-by-step explanation:
[tex]a=2(59)\\\\a=118^o[/tex]
---------------
[tex]b=180-(59+72)\\\\b=180-131=\\\\b=49^o[/tex]
---------------
[tex]C=2(72)\\\\C=144^o[/tex]
----------------
[tex]d=2b\\\\d=2(49)\\\\d=98^o[/tex]
--------------------
hope it helps...
have a great day!!
Find mMLK. IF YOU GIVE A LINK YOU WILL BE REPORTED.
Answer:where is the question
Step-by-step explanation:
I will mark brainliest to the correct ans