Answer:
When we have a set of N numbers like:
{x₁, x₂, ..., xₙ}
The mean of the set is:
M = (x₁ + x₂ + ... + xₙ)/N
In this case, we have the set:
{250, 280, 265, 245, 270, 255, 290}
So we have a set of 7 elements.
The mean of this set will be:
M = (250 + 280 + 265 + 245 + 270 + 255 + 290)/7 = 1855/7 = 265
So the mean number of stomata per mm of leaf surface is 265.
Solve for the coefficient a in vertex form for the parabola in Daredevil Danny’s practice jump
Answer:
-8/25 or -0.32Step-by-step explanation:
Vertex is (25, 32)The function in vertex form:
y = a(x - 25)² + 32x- intercepts are 15 and 35:
0 = a(15 - 25)² + 32 or 0 = a(35 - 25)² + 320 = a*100 + 32100a = - 32a = -32/100a = -8/25 or -0.32
Which estimate is closest to the actual value?
3.749237 x 1.84623
-8.2
-6.9
-3.6
-5.5
Answer:
Answer is -6.9
Step-by-step explanation:
I hope it's helpful!
at what value of x does the graph of the following function f(x) have a vertical asymptote? f(x)=1/x-6
Answer:
x = 6
Step-by-step explanation:
A vertical asymptote is a vertical line going through the x-axis at an x-value that x is not actually allowed to have.
In this case, we have a 'rational' function, meaning there is a 'ratio' or fraction involving the variable x.
With these 'rational' or fractional expressions, we always have to watch out to make sure we never have a denominator equal to zero, because division by zero is not defined. It is meaningless.
The denominator x-6 will equal zero if x is 6, so x cannot actually ever be 6.
That is where the vertical asymptoe goes: a vertical line with the equation x = 6.
The value of x is 6.
The following information should be considered:
A vertical asymptote is a vertical line that gone via the x-axis at an x-value where x is not actually allowed to have. In the given case, it have a rational function, that means there is a ratio or fraction involving the variable x. The denominator x-6 will equal zero in the case when x is 6, so x cannot actually ever be 6. So, where the vertical asymptoe goes: a vertical line with the equation x = 6.Learn more: brainly.com/question/17429689
A fruiterer had 350 more pears than mangos at first. After he sold half of his pears, he has 120 more mangoes than pears. How many pears he had at first?
(heuristics question)
pls help ASAP
my ans is 940. is it correct?
sorry I do not know.
Step-by-step explanation:
anymore question?
please be quick i need this done
Answer:
8.8
Step-by-step explanation:
kids cheating in tests.....
8.7749643787
8.8(1dp)
Loyalty requires you to dismiss all of your personal goals permanently.
Answer:
Step-by-step explanation:
show the rest
Answer:
False
Step-by-step explanation:just took the test
Please anyone help me on this
Answer:
a.) x²+h²+2xh-8x-8h
b.) h+2x-8
Step-by-step explanation:
A.) you just plug in x+h wherever there's an x
which means you have
(x+h)²-8(x+h)
simplify and get
x²+h²+2xh-8x-8h
we already know what f(x+h) is so we just need to subtract f(x) we have
x²+h²+2xh-8x-8h-x²+8x
simplify and get
h²+2xh-8h
Divide this by h and get
h+2x-8
Answer:
h+2x-8
Step-by-step explanation:
iiiiiiii aaaaaaammmmm ssssuuuurrree
46)
The lengths of two sides of a triangle are 14 cm and 11 cm. Which is a possible value for the third side of the triangle?
A)
1 cm
B)
3 cm
16 cm
D)
25 cm
Answer:
i depends of degre of triangle it can be three 14-11
it can also be 16
What is the value of p?
6
7
8
9
The value of P for the given angles of the quadrilaterals is 6.
What is geometry?One of the earliest areas of mathematics is geometry, along with arithmetic. It is concerned with spatial characteristics like the separation, shape, size, and relative placement of objects.
Given that the two opposite angles are 4P + 12 and 36 respectively.
The value of P for the two opposite angles will be calculated as:-
4P + 12 = 36
4P = 36 - 12
4P = 24
P = 24 / 4
P = 6
Hence, the value of P for the given angles of the quadrilaterals is 6.
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factorise fully 18e^2f^3-12e^2f
Answer:
[tex]18e^2f^3-12e^2f = 6e^2f(3f^2-2)[/tex]
Step-by-step explanation:
Given
[tex]18e^2f^3-12e^2f[/tex]
Required
Factorize:
[tex]18e^2f^3-12e^2f[/tex]
Express 18 as 6 * 3 and 12 as 6 * 2
[tex]18e^2f^3-12e^2f = 6*3e^2f^3-6*2e^2f[/tex]
Factor out 6
[tex]18e^2f^3-12e^2f = 6(3e^2f^3-2e^2f)[/tex]
Factor out [tex]e^2[/tex]
[tex]18e^2f^3-12e^2f = 6e^2(3f^3-2f)[/tex]
Factor out f
[tex]18e^2f^3-12e^2f = 6e^2f(3f^2-2)[/tex]
a) 25 + 97 - 72
46 -19 + 55
185 - 82 + 39
Answer:
254
Step-by-step explanation:
Add everytin step by step.
What is the area of the rectangle?
Answer:
Area = 396 units²
Step-by-step explanation:
Let's assume:
Length = 2c - 5
Width = 5c + 9
Perimeter = 2(L + W) = 106 units
Thus:
2[(2c - 5) + (5c + 9)] = 106
Find the value of c
2[2c - 5 + 5c + 9] = 106
2[7c + 4] = 106
14c + 8 = 106
14c = 106 - 8
14c = 98
Divide both sides by 14
c = 98/14
c = 7
✔️Area of the rectangle = Length × Width
Area = (2c - 5)(5c + 9)
Plug in the value of c
Area = (2×7 - 5)(5×7 + 9)
Area = (14 - 5)(35 + 9)
Area = (9)(44)
Area = 396 units²
Please help im confused explain if you can
Answer:
184 cm²
Step-by-step explanation:
five hundred and fifty four thousandths in number form
i need for homework
Answer:
54.0054
Step-by-step explanation:
hope it helps you
please mark me as brainlist
Does a triangle with these side lengths exist 3, 8, 9
Answer:
No
Step-by-step explanation:
The sum of the lengths of any two sides of a triangle must be greater than the length of the third side.
HELP FAST PLEASE!!!!
Deshawn surveyed two boys from each kickball team in his coed (boys and girls) kickball league to find out how many games the attended during the 10-game season. Which of the following generalizations could be valid based on the sample?
Answer:
75% of the guys is valid and half the boys in the league attended all the games is also valid. 80% of the games is not valid and so is 70% of the games.
Step-by-step explanation:
I took the test :)
Answer:
The Screenshot has the answer to the problem.
Step-by-step explanation:
It takes Sara 5 1/2hours to drive to her aunt's
house. She has already driven 3 1/2 hours.
How much longer does Sara have left to
drive?
Answer:
2 hours
Step-by-step explanation:
To solve this question, we can convert the fraction into decimal form momentarily, so that 5 1/2 is now 5.5, and 3 1/2 is now 3.5. We know that Sara has already driven 3.5 hours, and it takes 5.5 to get to her aunts house. To dins how much longer Sara has left to drive, simply subtract the total amount of hours by the hours already completed:
5.5 - 3.5 = 2.0
Meaning, Sara has 2 hours left to drive
Hope this helps :)
Plzzz help me I am bad at math
Answer:
C
Step-by-step explanation:
A: As the years go by the tree grows and deflat (false)
B: A number of the year can’t decrease (false)
C: As I said, as the years go by the tree grows (true)
D: Same reason as B (false)
I need help with this one
Answer:
(2/3)^3
8/27 in^3
Step-by-step explanation:
Answer:
3
0.29629629629in³
Step-by-step explanation:
To find the volume of a cube you multiply the length by the width by the height. Since all the sides of the cube are the same, its the same measure multiplied three times, ie. to the power of three.
(2/3)³=0.29629629629in³
Given that 9x – 8y = 16
Find x when y = -8
Give your answer as an improper fraction in its simplest form.
Answer:
x=-16/3
Step-by-step explanation:
9x-8(-8)=16
9x+64=16
9x=-48
x=-48/9
x=-16/3
can someone help with this!!! Im a little stuck!
what kind of math is this X_X
Carson draws a scale drawing of a city park and a parking lot. The city park is in the shape of a right triangle with logs that are 3 inches and 4 inches. The parking lot is in a shape of a rectangle with
dimensions of 15 inches and 25 inches. The scale for the drawing is 1 inch 40 feet.
Answer:
6,000 & 19,200
solve 4(x+7)-5x+2=10
Answer:
x = 20
Step-by-step explanation:
4(x + 7) - 5x + 2 = 10
open the parenthesis
4 * x + 4 * 7 - 5x + 2 = 10
4x + 28 - 5x + 2 = 10
combine like terms
-x + 30 = 10
subtract 30 from both sides of the equation
-x + 30 - 30 = 10 - 30
-x = 10 - 30
-x = -20
mutiply the equation by -1
-1 * -x = -20 * -1
x = 20
Brandon rode in a taxi that charges a flat fee of $2.25 and an additional $0.40 per mile of his trip. If he paid $6.80 for the cab ride, how many miles did he travel? (HOW DID YOU GET YOUR ANSWER SHOW YOUR WORK!!)
A. 11 3/8
B. False
C. 1/5
D. 61.5
E. True
F. 3/25
G. 62.4
Answer:
11 [tex]\frac{3}{8}[/tex] miles.
Step-by-step explanation:
To find how many miles Brandon rode, we can create an equation in slope-intercept form: y = mx + b
$2.25 is the flat fee, or the unchanging variable. This is our y-intercept, or b.
$0.40 is the changing variable, as it changes value depending on the amount of miles ridden. This is our slope, or m.
We know Brandon spent $6.80 on the cab ride. So, this is our y.
We get the equation: 6.80 = 0.40x + 2.25.
To solve, first subtract 2.25 from both sides of the equation:
6.80 - 2.25 = 0.40x + 2.25 - 2.25
We get: 4.55 = 0.40x
Now, just divide by 0.40 on both sides:
4.55 ÷ 0.40 = 0.40x ÷ 0.40
We get: 11.375 = x
So, Brandon rode for 11.375 miles. When converted to a mixed number, we get 11 [tex]\frac{3}{8}[/tex] .
I would appreciate brainliest, if not that's ok!
please help answer gets brainliest
Answer:
you got to go back to the question before that and then you will know.
Step-by-step explanation:
What is the solution to x + 9 = 21?
O A. x = 30
B. x = 18
O c. x = 12
O D. x= 9
Answer:
First we need to isolate x. To do this, we have to subtract 9
x = 12!
Step-by-step explanation:
Answer:
x=12
Step-by-step explanation:
x+9-9=21-9
x=12
hope this helps !!
One month Lucy rented 2 movies and video games for a total of $40. The next month she rented 5 movies and 3 video games for a total of $25. Find the
rental cost for each movie and each video game.
Answer:
the first month it was 10 each for a video game and the 2nd month it was
A line passes through the point (2, 1) and has a slope of -5/2
Write an equation in slope-intercept form for this line.
Answer:
[tex]y = -\frac{5}{2}x +6[/tex]
Step-by-step explanation:
Given
[tex]m = -\frac{5}{2}[/tex] -- slope
[tex](x_1,y_1) = (2,1)[/tex] --- point
Required
Determine the line equation
In slope intercept form, a line equation is:
[tex]y - y_1 = m(x - x_1)[/tex]
This gives:
[tex]y - 1 = -\frac{5}{2}(x - 2)[/tex]
Open bracket
[tex]y - 1 = -\frac{5}{2}x +5[/tex]
Add 1 to both sides
[tex]y - 1+1 = -\frac{5}{2}x +5+1[/tex]
[tex]y = -\frac{5}{2}x +6[/tex]
Which graph shows a negative correlation?
10
9
8
7
6
O
5
4
3
2
1
1 2 3 4 5 6 7 8 9
9
8
7
6
Mark this and return
Save and Exit
Next
Submit
Answer: 6
Step-by-step explanation:
-10201902090944
In table 4, for increasing x value, the y values are decreasing. Therefore, option 4 is the correct answer.
What is scatter plot?Scatter plots are used to observe and plot relationships between two numeric variables graphically with the help of dots. The dots in a scatter plot shows the values of individual data points.
A scatter plot with an increasing value of one variable and a decreasing value for another variable can be said to have a negative correlation.
In the given table 4, we can see for increasing x value, the y values are decreasing.
Therefore, option 4 is the correct answer.
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If m <CGB = 79°, then what is m <DGB?
Answer:
∠DGB = 101°
Step-by-step explanation:
Given:
∠CGB = 79°
Find:
∠DGB
Computation:
We know that CD is a straight line
So,
∠CGB + ∠DGB = 180
79 + ∠DGB = 180
∠DGB = 101°