8.67 as a mixed fraction is
8 and 67/100
you could also say 867/100
Find the general expression for the slope of a line tangent to the curve of y=x2+2x at the point P(x,y). Then find the slopes for x=−3 and x=0.5. Sketch the curve and the tangent lines.
The general expression for the slope of the tangent line is m = y'(x) = 4x + 2. the value of m is - 10 for x = - 3 and is 4 for x = 0.5.
A line that only touches a curve once is said to be tangent to it. The point (x₀ , y₀) where a line with the equation of a tangent to a curve
y = f ( x ) is given by:
T' (x) = f'(x) (x ₋ x₀) ₊ y₀
The slope of the tangent line to a curve at a point is computed by getting the first derivative of the curve.
y(x)=2x²y
y'(x) = (2)2x²⁻¹ ₊ (1)2x¹⁻¹
y'(x) = 4x¹ ₊ 2x°
y'(x) = 4x ₊ 2(1)
y'(x) = 4x ₊ 2
The slope at a point
P (x, y) is computed by substituting the x-coordinate of the point to the first derivative. This is the general expression for the slope:
m = y'(x) = 4x + 2
For x = - 3
m = 4 (- 3) + 2
m = - 12 + 2
m = - 10
For x = 0.5
m = 4 (0.5) + 2
m = 2 + 2
m = 4
Therefore, the general expression for the slope of the tangent line is m = y'(x) = 4x + 2. the value of m is - 10 for x = - 3 and is 4 for x = 0.5.
Learn more about tangent here:
https://brainly.com/question/17040970
#SPJ9
Round the number to the nearest thousandth.
0.3244
Answer:
.324
Step-by-step explanation:
.3244 if underlined digit >= 5 round the thousandth digit up o/w leave it as is
Help me do a histogram for this
High
Temperatures
(F)
21 to 30
degrees
31 to 40
degrees
41 to 50
degrees
51 to 60
degrees
61 to 70
degrees
71 to 80
degrees
Frequency
18
32
68
74
63
41
SAT scores are normally distributed, with a mean of 500 points and a
standard deviation of 100 points. Suppose you take the SAT. Several weeks
later, you receive your results, which show that you reached the 90th
percentile for the math portion.
Recalling that SAT scores are always expressed as multiples of 10, how many
points did you get on the test?
A.600
B.630
C.130
D.590
E.690
Recalling that SAT scores are always expressed as multiples of 10, then the points we get on the test will be 628.
What do you mean by standard deviation?In statistics, Standard deviation is a measure of the variation of a set of values.
σ = standard deviation of population
N = number of observation of population
X = mean
μ = population mean
WE have been given that SAT scores are normally distributed, with a mean of 500 points and a standard deviation of 100 points.
The solution as follows;
Let be X: scores of SAT
P(X ≥ x) = 0.9
P((X - 500)/100 ≥ (x - 500)/100) = 0.9
P(Z ≥ z) = 0.9
z = 1.28
1.28 = (x - 500)/100
128 + 500 = x
x = 628
Recalling that SAT scores are always expressed as multiples of 10, then the points we get on the test will be 628.
Learn more about standard deviation and variance:
https://brainly.com/question/11448982
#SPJ1
I need help with geometry
Answer:
Step-by-step explanation:
The area of a triangle is equal to half the product of the base by the height drawn to that base
Hence,
1)
[tex]\displaystyle\\S_\triangle=\frac{1}{2}(4)(1.5)\\\\S_\triangle=2(1.5)\\\\S_\triangle=3 \ square\ inches[/tex]
2)
[tex]\displaystyle\\S_\triangle=\frac{1}{2}(16)(9.4)\\\\S_\triangle=8(9.4)\\\\S_\triangle=75,2 \ square\ km[/tex]
3)
The area of a trapezoid is equal to the product of the half sum of the trapezoid bases by the height
Hence,
1 ft=12 in
[tex]\displaystyle\\S_{trapezoid}=\frac{a+b}{2}h \\\\S_{trapezoid}=\frac{16.8+33.6}{2}(12)\\\\ S_{trapezoid}=\frac{50.4}{2} (12)\\\\S_{trapezoid}=25.2(12)\\\\S_{trapezoid}=302,4 \ square \ inches[/tex]
4)
[tex]\displaystyle\\S_{trapezoid}=\frac{7.9+2.3}{2}(4.6)\\\\S_{trapezoid}=\frac{10.2}{2}(4.6)\\\\ S_{trapezoid}=5.1(4.6)\\\\ S_{trapezoid}=23.46\ square\ meters[/tex]
5)
The area of a rectangle is equal to the length times the width of its sides
Hence,
[tex]S=ab\\\\S=6(5.1)\\\\S=30.6\ square\ meters[/tex]
6)
[tex]S=6(4)-2(4-3)\\\\S=24-2(1)\\\\S=24-2\\\\S=22 \ square\ cm[/tex]
ANSWER THE FOLLOWING WITH COMPLETE SOLUTIONS:
Answer:
5, -35, 3.75, 4a + 4b + 5
Step-by-step explanation:
1. f(0) = 3(0)^2 - 2(0) + 5 = 5
2. f(-4) = 3(-4)^2 - 2(-4) + 5 = -35
3. f(-1/2) = 3(-1/2)^2 - 2(-1/2) + 5 = 3.75
4. f(a+b) = 3(a+b)^2 - 2(a+b) +5 = 4a + 4b + 5
3(a+b)(a+b) - 2a -2b + 5
6a + 6b -2a -2b +5
4a + 4b + 5
I think
How high is a tree that casts a 24 ft shadow at the same time a 5-ft pole casts a shadow 14 ft-long the tree height
Answer:
60/7 ft
Step-by-step explanation:
Using similar triangles, if we let the height of the tree in ft be x,
[tex]\frac{x}{24}=\frac{5}{14} \\ \\ x=\frac{60}{7}[/tex]
The length of a rectangle is 7yd more than twice the width x. The area is 555yd2.
(a) Write an equation in terms of x that represents the given relationship.
The equation in terms of x that represents the given relationship is (7 + x)x = 555
Write an equation in terms of x that represents the given relationship.The given parameters are
Length = L
Width = x
Area = 555 yd^2
From the question, we have
L = 7 + x
The area of a rectangle is
A = Lx
Substitute 7 + x for L
So, we have
A = (7 + x)x
Substitute 555 for A
So, we have
(7 + x)x = 555
Hence, the equation in terms of x that represents the given relationship is (7 + x)x = 555
Read more about areas at
https://brainly.com/question/24487155
#SPJ1
The total number of goals scored in a hockey game was 29. Team B scored 5 more goals than team A. How many goals did each team score
Answer:
Team A scored 12 pts
Team B scored 17 pts
Please help, I got till the end of the period.
Answer:
85+75+160=v
Step-by-step explanation:
correct answer
Help
Please help
I appreciate it
(-1, 8) and (5,-2) equation must be in slope intercept form
The linear equation that passes through (-1, 8) and (5,-2) is:
y = (5/3)*x + 29/3
How to find the linear equation?
A general linear equation in the slope-intercept form is:
y = a*x + b
Where a is the slope, and b is the y-intercept.
If we know that this line passes trhough the points (-1, 8) and (5, -2) then we can write the slope as:
a = (-2 - 8)/(5 + 1) = -10/6 = 5/3
Then we can write:
y = (5/3)*x + b
Now to find the value of b we can replace the values of one of the points in the line, if we use (-1, 8) we will get:
8 = (5/3)*-1 + b
8 + 5/3 = b
24/3+ 5/3 = b
29/3 = b
We conclude that the linear equation is:
y = (5/3)*x + 29/3
If you want to learn more about linear equations:
https://brainly.com/question/1884491
#SPJ1
Review each problem below and determine if it is a future value question or a present value question. Choose the correct match.
Note: do not solve the problems, simply determine if the problem is a future value question or a present value question.
Claudia deposited $1,000 today. Assuming 7% annual interest, how much will the $1,000 be worth in one year?
Steven White plans to retire in 15 years with $400,000 saved. He thinks his savings can earn 10 percent per year. How much does Steven White have to deposit today in order to have $400,000 in 15 years?
What will a deposit of $4,500 today at 10% compounded semiannually be worth if left in the bank for six years?
If Joe deposits every payment in an account paying a nominal annual interest rate of 6% compounded monthly, how much will he have at the end of three years?
If you want $1,000 five years from now and you earn 5 percent on your savings, how much do you need to deposit today?
The distinction between present value and future value is that the former is required now and the latter is needed at a future period
What is the difference between present value and future value?
The present value indicates today's worth or dollars of a future value of a flow whereas the future value determines the future worth of an investment or deposit made today or deposits over a number of years at a time in the future
The amount that Claudia would have in a year's time is future value because the present value is the initial deposit made today
The amount that Steven would have to deposit today in order to accumulate $400,000 in 15 years is the present value
The amount that a deposit of $4,500 made today would worth in 6 years is the future value because the initial deposit is the present value.
Joe would have to deposit payments in expectation of future value after 3 years and the deposit required today to earn a rate of return of 5% in order to have $1000 in 5 years is a present value
Find out more about present value on:brainly.com/question/14860893
#SPJ1
Note the image.
9,077
9,884
1,303
1,055
3,222
Which number have a digit in the ones place that is 1/10 the value of the digit in the tens place
The number that have a digit in the ones place is 1/10 of the value in the tens place are 3,222 and 1,055.
What is Place value?
The value of each digit is called place value.
The given condition to find the number is;
Number that have a digit in the ones place is 1/10 of the value in the tens place.
Now, In the number 3,222;
2 is 1/10 of the 20 in the tens place.
And, In the number 1,055
5 is 1/10 of the tens value of 50.
So, The number that have a digit in the ones place is 1/10 of the value in the tens place are 3,222 and 1,055.
Learn more about the place value visit:
https://brainly.com/question/1702423
#SPJ1
how to find percentage
Answer:
The easiest way to find percentage is to multiply the number by 100. Like if you were required to find the percentage of 0.87 you multiply it by 100 and get 87 there for 0.87 is equal to 87%.
Step-by-step explanation:
Hope it helps! =D
Which expressions are equal to 0 when x=-1? Check all that apply.
Answer:
The answer A,B,C
a raindrop falls at the rate of 4/50 mile in 1/20 hour. at this rate how far will the raindrop travel in 1 hour
Answer:
Step-by-step explanation:
4/50 * 20 = 8/5 miles
Amir buys a car for £13155 which depreciates in value at a rate of 1.5% per year.
How much Amir's car will be worth in 9 years.
Answer: $11,379 i believe
Step-by-step explanation: Multiplying 9 times the percentage value at which the cars value depreciates it gives you, 13.5%. Dividing 13155 by that 13.5% will give you the absolute value of $11379.075 in which would be $11,379.
Hope this helps!
Can you guys help me out
Answer:51.25
Step-by-step explanation:
1=1cm x 1\2 cm x 2cm
There isn't a ton of info provided in your question, however, I believe the solution is 1 = 1.
chapter 8
1.Find the surface area of each figure. Round your answers to the nearest hundredth, if necessary.
The surface area of the sphere is approximately equal to 615.752 square miles.
How to determine the surface area of a solid
The surface area of a solid is the area comprised by all faces of a solid, in the case of a sphere, there is only one face whose extension is determined by the following formula:
A = 4π · r²
Where:
A - Area of the sphere, in square miles.r - Radius of the sphere, in miles.If we know that r = 7 miles, then the surface area of the sphere is:
A = 4π · (7 mi)²
A ≈ 615.752 mi²
To learn more on surface areas: https://brainly.com/question/2835293
#SPJ1
The diagram shows a circle inside a square work out the area of this circle
16cm is the square
The area of the circle inscribed inside the square is 64π cm²
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
The circle inside the square as shown in the diagram have a diameter of 16 cm. Hence:
Radius = diameter / 2 = 16/2 = 8 cm
Area of circle = π * radius² = π * 8² = 64π cm²
The area of the circle inscribed inside the square is 64π cm²
Find out more on equation at: https://brainly.com/question/13763238
#SPJ1
Answer please
Picture is include
Don’t worry about part b just do part A
Select the values that are solutions to the inequality x2 + 3x – 4 > 0.
3x + y =4 and x - 3y = 8 solve using substitution method and elimination method
Answer:
×=2 , y= -2
Step-by-step explanation:
3x+y=4______(1)
x-3y=8_______(2)
by substitution method...
multiplying eq (1) by 3..
9x+3y=12_____(3)
x-3y=8_______(4)
10x=20
x=2
putting the value of x in eq (1)
3x+y=4
3(2)+y=4
6+y=4
y=4-6
y=-2
×=2 , y= -2
-4 + 8[tex]\frac{3} {8}\frac{6} {7}[/tex]
It should be noted that the value of -4 + 8 36/87 will be 4 12/29.
How to calculate the fraction?It should be noted that based on the information illustrated, the fraction given is illustrated as:
= -4 + 8 36/87
= -4 + 8 12/29
= 4 12/29
Therefore, it should be noted that the value of -4 + 8 36/87 will be 4 12/29.
Learn more about fractions on:
brainly.com/question/17220365
#SPJ1
use the roster method to write each of the given sets. the set of natural numbers x that satisfy x + 6 = 5
Use the roster method to write each of the given sets. the set of natural numbers x that satisfy x + 6 = 5.
There is no set of natural numbers of x that satisfy the condition for x+6=5
Roster method is nothing but listing the items of a set inside brackets, the roster method provides a means to display the set's components.
For Example, A={1,2,3,4,5}
The Natural numbers is the category of numbers known as "natural numbers" (n) contains only positive values. They are used in numerical ordering and counting.
They are {N=0,1,2,3,4,......}
Here, x+6=5
Only an integer can meet the condition from the given parameters. This is because an integer has two possible values: positive and negative.
i.e
By adding (-6) to both sides, we have:
x+6-6=5-6
x=-1
Therefore here only one integer satisfy the equation x+6=5 that is {-1} but -1 is not a natural number.
To learn more about natural numbers visit: https://brainly.com/question/17429689
#SPJ9
Point A’ is the image of point A under a rotation about the origin, (0,0).
Determine the angles of rotation.
Choose all that apply:
A:90 degrees clockwise
B:90 degrees counterclockwise
C:180 degrees
D: 270 degrees clockwise
E: 270 degrees counterclockwise
Find an equation of the circle that satisfies the given conditions. Center (−1, 8); passes through (−3, −5)
Answer:
[tex](x + 1)^2 + (y-8)^2 = 173[/tex]
Step-by-step explanation:
[tex]\textsf{The standard form of the equation of a circle is }\\\\ \sf (x -h)^2 + (y-k)^2 = r^2 \;where\; (h, k) \textsf{ are the coordinates of the center of the circle and \;r\; is the radius}[/tex]
Here h = -1, k = 8
So we get
[tex](x - (-1)) ^2 + (y - 8)^2 = r^2[/tex]
[tex](x + 1)^2 + (y - 8)^2= r^2\\\\[/tex]
Since the circle passes through the point (-3, -5) we can plug in these values of x = -3 and y = -5 to get r squared
[tex](-3 + 1)^2 + (-5 -8)^2 = r^2\\\\(-2)^2 + (-13)^2 = r^2\\\\4 + 169 = r^2\\\\r^2 = 173\\\\\\[/tex]
So the equation of the circle is
[tex](x + 1)^2 + (y-8)^2 = 173[/tex]
m(n) = 3n³ - 4n
evaluate m(-1)
Step-by-step explanation:
If n= -1
input -1 for n in the equation
e.g. 3(-1)³-4(-1)
From there solve for n and you should get -23n