Answer:
D
Step-by-step explanation:
Count total dots => 30
Amount of dots under x>=5 => 21
21/30 = 7/10 = 70%
Find the value of x that makes each sentence true.
If (5 1/5)^5=25x then x =
If (8 1/3)^2= 4x, then x =
The first equation is:
(5 1/5)^5 = 25x
To solve for x, we need to simplify the left side of the equation first.
(5 1/5)^5 = (5 + 1/5)^5 = 6^5 = 7776
So,
7776 = 25x
Therefore,
x = 7776/25 = 311.04
For the second equation:
If (8 1/3)^2 = 4x, then x =
We need to simplify the left side of the equation first.
(8 1/3)^2 = (8 + 1/3)^2 = 9^2 = 81
So,
81 = 4x
Therefore,
x = 81/4 = 20.25
So the values of x that make each sentence true are 311.04 and 20.25, respectively.
Find an equation of the circle that satisfies the given conditions. (Use the variables x and y.)
Center (−3, 2); passes through (−6, −6)
An equation of the circle that satisfies the given condition is (x+3))^2 + (y - 2)^2 = 73
Finding an equation of a circleThe formula for finding the equation of a circle is expressed as:
(x-a)^2 + (y - b)^2 = r^2
Determine the value of r^2 using the distance between two points
r^2 = (-6-2)^2 + (-6+3)^2
r^2 = 64 + 9
r^2 = 73
Given the centre (a, b) as (-3, 2), the equatio of the circle will be;
(x-(-3))^2 + (y - 2)^2 = 73
(x+3))^2 + (y - 2)^2 = 73
Hence the equation of the circle is (x+3))^2 + (y - 2)^2 = 73
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16% of the cows have already had calves. 32 have not had calves yet. How many are in the herd?
Answer:
There are approximately 38 cows in the herd.
Step-by-step explanation:
In this problem, we are asked to find the number of cows in a herd, given that 16% of the cows have already given birth to calves and 32 have not yet done so.
Assuming there are no other types of cows in the herd, we can determine that the 32 cows that have not had calves make up 84% of the herd, since they are what is left over when 16% is subtracted from 100% (the whole herd).
[tex]100\%-16\% = 84\%[/tex]
We can now create a equation that shows that 84% of the herd is 32 cows, representing the total number of cows in the herd as x.
[tex]32 \text{ cows} = 84\% \cdot x[/tex]
Finally, to solve for the number of cows in the herd, we can multiply both sides by 100/84.
[tex]\dfrac{100}{84}(32 \text{ cows}) = (84\% \cdot x)\dfrac{100}{84}[/tex]
[tex]x \approx 38 \text{ cows}[/tex]
So, there are approximately 38 cows in the herd.
pls help!!
In the xy-plane, the point (2,10) lies on the graph of the
function f(x) = 2x2 + bx - 8. What is the value of b?
(answer choices in the image attached)
In the xy-plane, the point (2,10) lies on the graph of the function f(x) = 2x^2 + bx - 8. The value of b is 4.
What is linear equation?
A linear equation is an equation that describes a straight line in the form y = mx + b, where x and y are variables, m is the slope of the line, and b is the y-intercept. The slope of a line is the measure of how steeply the line rises or falls, and the y-intercept is the point at which the line crosses the y-axis.
In a two-dimensional coordinate system, a linear equation represents a straight line that can be graphed by plotting pairs of x and y values that satisfy the equation. The line passes through all points that satisfy the equation and no others.
We can find the value of b by using the point-slope form of a linear equation, which states that the equation of a line with slope m that passes through the point (x1, y1) is given by y - y1 = m(x - x1).
In this case, the slope of the line is equal to 4x, and the point (x1, y1) is (2, 10), so we have:
y - 10 = 4x * (x - 2)
Expanding the right-hand side, we get:
y - 10 = 4x^2 - 8x
Matching this equation with the given function f(x) = 2x^2 + bx - 8, we see that b = 4.
So the value of b is 4.
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Thor looked 13 websites every 39 hours. At that rate how many would he look at in 6 hours
Answer:
Step-by-step explanation:13x6
Simplify the following as much as possible
A. csc x
B. sec x
C. sin x
D. cos x
Answer:
[tex]\textsf{C.} \quad \sin x[/tex]
Step-by-step explanation:
Given rational expression:
[tex]\dfrac{\sec^2x \csc x}{\sec^2x + \csc^2 x}[/tex]
Rewrite the numerator and denominator of the given rational expression using the following trigonometric identities:
[tex]\boxed{\boxed{\begin{array}{c}\underline{\sf Trigonometric\;Identities}\\\\\boxed{\sec^2 x=\dfrac{1}{\cos^2x}} \qquad \boxed{\csc^2 x=\dfrac{1}{\sin^2 x}}\qquad \boxed{\csc x=\dfrac{1}{\sin x}}\\\\\end{array}}}[/tex]
Therefore:
[tex]=\dfrac{\dfrac{1}{\cos^2x} \cdot \dfrac{1}{\sin x}}{\dfrac{1}{\cos^2x}+\dfrac{1}{\sin^2x}}[/tex]
Multiply the fractions in the numerator, and make the denominators of the fractions in the denominator the same:
[tex]=\dfrac{\dfrac{1}{\sin x\cos^2x}}{\dfrac{\sin^2x}{\sin^2x\cos^2x}+\dfrac{\cos^2x}{\sin^2x\cos^2x}}[/tex]
[tex]=\dfrac{\left(\dfrac{1}{\sin x\cos^2x}\right)}{\left(\dfrac{\sin^2x+\cos^2x}{\sin^2x\cos^2x}\right)}[/tex]
[tex]\textsf{Apply the trigonometric identity}\;\;\boxed{\sin^2x + \cos^2 x = 1}:[/tex]
[tex]=\dfrac{\left(\dfrac{1}{\sin x\cos^2x}\right)}{\left(\dfrac{1}{\sin^2x\cos^2x}\right)}[/tex]
[tex]\textsf{Apply\:the\:fraction\:rule}\;\;\boxed{\dfrac{\frac{a}{b}}{\frac{c}{d}}=\dfrac{ad}{bc}}:[/tex]
[tex]=\dfrac{\sin^2x\cos^2x}{\sin x\cos^2x}[/tex]
Cancel the common factor cos²x:
[tex]=\dfrac{\sin^2x}{\sin x}[/tex]
Simplify:
[tex]= \sin x[/tex]
Therefore:
[tex]\large\textsf{$\dfrac{\sec^2x \csc x}{\sec^2x + \csc^2 x}=$}\;\boxed{\boxed{\sin x}}[/tex]
A car manufacturer determines that its profit P in pesos can be modeled by the function P (x)=x3+5x2+3x+1,where x represent the number of cars sold. what is the profit when x=10?
Answer:
1531 pesos
Step-by-step explanation:
The profit when x=10 is calculated as follows:
P(10) = 10^3 + 5(10^2) + 3(10) + 1 = 1000 + 500 + 30 + 1 = 1531 pesos.
V = 1/3 (3.14) (5²) X10
[tex]\huge\text{Hey there!}[/tex]
[tex]\mathsf{v = \dfrac{1}{3}(3.14) (5^2) \times 10}\\\\\mathsf{v = \dfrac{1}{3}(\dfrac{3.14}{1})(5\times5)(10)}\\\\\mathsf{v = \dfrac{1\times3.14}{3\times1}(25)(10)}\\\\\mathsf{v = \dfrac{3.14}{3}(25)(10)}\\\\\mathsf{v = 1.046667(25)(10)}\\\\\mathsf{v = 26.166667(10)}\\\\\mathsf{v = \dfrac{785}{3}}\\\\\mathsf{v = 261 \dfrac{2}{3}}[/tex]
[tex]\huge\text{Therefore your answer should be:}[/tex]
[tex]\huge\boxed{\mathsf{v = \dfrac{785}{3} \ or \ v = 261 \dfrac{2}{3}}}\huge\checkmark[/tex]
[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]
What is true about CJ's plan to construct a square inscribed in a circle?
CJ's plan to construct a square inscribed in a circle is through 7 steps.
step 1:
First, draw a circle using a compass (any size).
Step 2:
Using a ruler, draw a diameter or straight line along the length of the circle and pass through its center.
Step 3:
Then open the compass through the circle. Then bring the compass tip to one end of the diameter and swing the compass over the circle to draw an arc.
Step 4:
Keeping the compass the same length, move it to the other side of the diameter, swing it over the circle again, and create another arc until the two arcs intersect. Step 5:
Repeat steps 3 and 4, this time using the same compass size to create an arc under the circle.
Step 6:
Connect the top and bottom intersections of the circle with a ruler or ruler. This creates a perpendicular bisector that bisects the diameter and forms a 90 degree angle.
Step 7:
Finally, use a ruler to connect each corner point to create a square.
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Need help with this. Keep getting answer wrong
Answer:
see image
Step-by-step explanation:
First of all, the problem might be that we need to set this up differently than how it is written.
"Subtract THIS from THAT" means that you have to put the second thing first and minus the first thing:
THAT - THIS
Next, the minus in the middle has to go to all three of the terms in the second part. This is going to change the sign of all three parts. See image.
Last, hopefully fraction addition with positive and negative signs isn't too terribly confusing.
1/5 - 2/5 is -1/5.
And -1/4 - 1/4 is -2/4, which is -1/2.
see image.
Make sure the y^2 and the y look like they are next to the whole fraction and are not on the bottom of the fraction.
please help me i’ll give you brainlist
Answer:
its c
Step-by-step explanation:
Select the coordinates A′ and B′ after dilation of the line segment AB with a scale factor of 2, centered at the origin where the endpoints are A(3,7) and B(4,9)
Answer:
To perform a dilation with a scale factor of 2 centered at the origin, we need to multiply each coordinate of the original points A and B by the scale factor of 2.
The coordinates of point A after dilation are:
A′(2 * 3, 2 * 7) = A′(6, 14)
Similarly, the coordinates of point B after dilation are:
B′(2 * 4, 2 * 9) = B′(8, 18)
So, the endpoints of the dilated line segment are A′(6, 14) and B′(8, 18).
This system of equations has been placed in a matrix:
y=650x + 175
y= 25,080 - 120x
Column 1
Column 2
Column 3
Row 1
-1
Row 2
120
Using matrix inversion, the value of x and y are 1.104 and 39.704 respectively
What is the solution to the equationsThe system of equations can be written in matrix form as:
| -650 1 | | x | | 175 |
| 120 1 | | y | | 25,080 |
To solve for x and y, we can use matrix inversion to get:
| x | | -650 1 |^-1 | 175 |
| y | = | 120 1 | | 25,080 |
Using matrix inversion, we get:
| x | | -0.00016 0.00875 | | 175 | | 1.104 |
| y | = | 0.00476 0.00004 | | 25,080 | = | 39.704 |
Therefore, the solution to the system of equations is x = 1.104 and y = 39.704.
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In the state of Pennsylvania 12% of students submit box tops for education to their school. A large school district in western Pennsylvania runs a contest to see if they can increase participation. The superintendent takes a random sample of 210 students from the district and finds that 35 have submitted box tops this year. Do these data provide convincing evidence that the contest has increased participation in the box tops for education programs
Answer:
Step-by-step explanation:
All it's saying is that the 12% of the people are 35 and the 82% of people who did not submitted data is 175 people
The calculated test statistic (2.08) is greater than the critical value (1.96), we reject the null hypothesis and conclude that there is evidence to suggest that the contest has increased participation in the box tops for education program.
How to calculate the null hypothesis?To determine if the contest has increased participation in the box tops for the education program, we need to conduct a hypothesis test.
We will use a significance level of 0.05, which means we are willing to accept a 5% chance of making a Type I error (rejecting the null hypothesis when it is actually true).
Null Hypothesis: The proportion of students submitting box tops for education is still 12% (or has decreased) after the contest.
Alternative Hypothesis: The proportion of students submitting box tops for education has increased after the contest.
To test this hypothesis, we will use a one-sample proportion test. We will use the sample proportion, p' = 35/210 = 0.1667, as an estimate of the population proportion, p. The test statistic is calculated as:
z = (p' - p) / √(p x (1-p)/n)
where n is the sample size.
Under the null hypothesis, the expected value of the test statistic is 0, and the standard deviation of the test statistic is sqrt(p*(1-p)/n).
Using p = 0.12 and n = 210, we have:
z = (0.1667 - 0.12) / √(0.12 x 0.88/210) ≈ 2.08
The critical value for a significance level of 0.05 and a two-tailed test is ±1.96.
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1. An arithmetic sequence is given using the recursive definition: b₁ = 8 and b₁ =b₁-₁-3. Which of the
n-1
following is the value of b,? Show the work that leads to your answer.
(1) 14
(2) 2
(3) 6
(4) 4
Answer:
To find the value of b_n in an arithmetic sequence given by the recursive definition b_1 = 8 and b_n = b_{n-1} - 3, we can use the formula for the nth term in an arithmetic sequence:
b_n = b_1 + (n-1)d
where d is the common difference. In this case, d = -3.
So, we can plug in the values for b_1 and d to find b_n:
b_n = 8 + (n-1)(-3)
b_n = 8 - 3(n-1)
Now, to find the value of b_n for a specific n, we just need to substitute the value of n into the equation for b_n. For example, if we want to find b_14, we would substitute n = 14:
b_14 = 8 - 3(14-1)
b_14 = 8 - 3(13)
b_14 = 8 - 39
b_14 = -31
So, the value of b_14 is -31, and the answer is (1) 14.
Using the terms ‘development’ and ‘fidelity’, explain the value of terms that are essentially contestable. Show how these terms differ from others described as well-defined.
Step-by-step explanation:
we all know that development is positive change in society and fidelity is a process of fertilization of human in society that explain us development and fertilization are the process of positive changes in our environment and province
Solve for x with the given measures
Answer: X= -66
Step-by-step explanation:
If m angle UYV=56
Then WYX= -x-10=56
then X=-66
Solve -4(r-2/3)+4<-8. Show your work
Please help quickly I will give brainly and do step by step explanation thanks!
Answer:
11/3
Step-by-step explanation:
-4(r-2/3)+4<-8
-4r+8/3+4<-8
8/3+4<-8+4r
8/3+4+8<4r
44/3<4r
44/12=r
11/3=r
Calvin will plant lily bulbs and iris bulbs in his front garden. He will plant a total of flower bulbs and as many iris bulbs as lily bulbs. The graph below shows the number of lily bulbs (x) and the number of iris bulbs (y) Calvin will plant. Bulbs to Be Planted Which statement describes the point of intersection on the graph?
A. Calvin will plant lily bulbs.
B. Calvin will plant iris bulbs.
C. Calvin will plant lily bulbs and iris bulbs.
D. Calvin will plant lily bulbs and iris bulbs. Lily Bulbs
The statement that describes the point of intersection on the graph is Calvin will plant lily bulbs and iris bulbs. Option C
What is point of intersection of a graph?The point of intersection on the graph represents the values of x and y where both conditions are satisfied.
In this case, the point of intersection represents the number of lily bulbs (x) and the number of iris bulbs (y) that Calvin will plant such that the number of iris bulbs is equal to the number of lily bulbs.
So, the correct statement that describes the point of intersection on the graph is "Calvin will plant lily bulbs and iris bulbs".
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guysss solve this
there are "6" eggs layed on the table
I break "2" of them
I cooked "2" of them
I ate "2" of them
how many eggs did they left?
Answer:
Step-by-step explanation:
4.
first, you broke the 2 eggs, and then cooked the eggs. after cooking them, you ate the two eggs that you cracked and cooked.
The width of a rectangle is 35 of a foot and the length is 8 feet. What is the area? Responses A 340 ft2 3 40 ft 2 B 445 ft2 4 4 5 ft 2 C 835 ft2 8 3 5 ft 2 D 725
The solution is Option B.
The area of the rectangle is given by the equation A = 4 4/5 feet²
What is the Area of a Rectangle?The area of the rectangle is given by the product of the length of the rectangle and the width of the rectangle
Area of Rectangle = Length x Width
Given data ,
Let the area of the rectangle be represented as A
Now , the equation will be
Let the length of the rectangle be L = 8 feet
Let the width of the rectangle be W = ( 3/5 ) feet
Now , Area of Rectangle = Length x Width
Substituting the values in the equation , we get
Area of Rectangle = ( 3/5 ) x 8
On simplifying the equation , we get
Area of Rectangle = 24/5 feet²
Area of Rectangle = 4 4/5 feet²
Hence , the area of the rectangle is 4 4/5 feet²
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Suppose we have a bag of jelly beans 82% of the jelly beans orange, 14% are black, and 4% are green. Moreover, 15% of orange are sugar free, 70% of black beans are sugar free, and 90% of green beans are sugar free Suppose we select a jelly bean at random.
1. Construct a tree diagram to represent this situation
2. Find the probability of green bean and sugar free
3. Given the bean is sugar free, what is the probability that it is an orange bean?
Please I need help
Answer:
3/50
Step-by-step explanation:
3 g, 5 r, 2 o
3 + 5 + 2 = 10
Orange = 2 jelly beans
Probability of selecting an orange jelly bean: 2/10 or 1/5
If you put the jelly bean back in, there is still 10 jelly beans.
Green = 3 jelly beans
Probability of selecting a green jelly bean: 3/10\
Multiply the probabilities:
1/5 x 3/10
= 3/50
You launch an object off a 55-foot cliff. If the object was launched at 85 feet/second,
determine how long it will take for the object to hit the ground below. NEAREST TENTH
Solving a quadratic equation, we will see that the object will hit the ground after 5.9 seconds.
How long it will take for the object to hit the ground below?The equation for the vertical movement of an object will be:
H(t) = -16*t^2 + v0*t + h0
Where v0 is the initial velicity, in this case 85ft/s, and h0 is the initial height, 55ft.
Then the height equation is:
H(t) = -16*t^2 + 85*t + 55
The object will hit the ground when the height is equal to zero, then we need to solve:
-16*t^2 + 85*t + 55 = 0
Using the quadratic formula we will get:
[tex]t = \frac{-85 \pm \sqrt{(85)^2 - 4*(-16)*55} }{2*-16} \\\\t = \frac{-85 \pm 103.7 }{-32}[/tex]
We only care for the positive solution, which is:
t = (-85 - 103.7)/-32 = 5.9
So it will take 5.9 seconds for the object to hit the ground.
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F(-10)=64 and f(15)=54
What is the slope
Equation and x intercept
The equation of the straight line is 2x+5y=340.
The x-intercept point of that line is (170,0).
What is the equation of a straight line?A straight line has different forms like point-slope form, standard form, slope-intercept form, and others. A specific form is used according to the given data for convenience.
As f(-10)=64 and f(15)=54, two points can be wriiten as (x₁,y₁)=(-10,64) and (x₂,y₂)=(15,54).
Now, use the two-point form of the equation of a line.
(y-y₁)/(x-x₁)=(y₂-y₁)/(x₂-x₁)
(y-64)/(x-(-10))=(54-64)/(15-(-10))
(y-64)/(x-10)=-10/25
25(y-64)=-10(x-10)
5(y-64)=-2(x-10)
5y-320=-2x+20
2x+5y=340
Therefore, the required equation of the line is 2x+5y=340.
To find the x-intercept, substitute y=0 into the equation of the line.
2x+5×0=340
2x=340
x=170
Therefore, the x-intercept point is (170,0).
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An evergreen nursery usually sells a certain shrub after 5 years of growth and shaping. The growth rate during those 5 years is approximated by dh/dt = 1.2t + 3, where t is the time in years and h is the height in centimeters. The seedlings are 11 centimeters tall when planted (t = 0).
(a) Find the height after t years.
h(t) =
(b) How tall are the shrubs when they are sold?
cm
(a) The height after t years is given by
h(t) = 0.6t² + 3t + 11
(b) The shrubs are 38 centimetres tall when they are sold.
What is the growth rate of the shrubs during the first year of growth?The growth rate of the shrubs during the first year of growth can be determined by setting t = 1 in the given differential equation dh/dt = 1.2t + 3. This gives us dh/dt = 1.2(1) + 3 = 4.2 centimeters per year.
Therefore, during the first year of growth, the shrubs will grow at a rate of 4.2 centimeters per year. This rate of growth is expected to increase as the shrubs age and reach the end of the 5-year growth period before they are sold by the nursery.
(a) To find the height after t years, we integrate the growth rate function with respect to t:
∫dh/dt dt = ∫(1.2t + 3) dt
h(t) = 0.6t² + 3t + 11
(b) The shrubs are sold after 5 years, so we plug in t = 5 into the function we found in part (a):
h(5) = 0.6(5)² + 3(5) + 11
= 38 cm
Therefore, the shrubs are 38 centimetres tall when they are sold.
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Find the peremiter of these triangles with step by step solutions plss. Thanks!
25+25=50,4+4=8;50+8=58
4. The running track in this diagram consists of two parallel sections with semicircular sections at each end.
Determine the area of the running track.
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How to find the area ?To find the area of the running track, you first need to find the area of the whole shape and then the area of just the inner section.
Area of whole shape :
= Area of both semicircles + Area of the rectangle
= ( π x 46. 41 ²) + ( 85 x ( 46. 41 x 2 ))
= 14, 659.06 m ²
Then, find the area of the inner section :
= ( π x 36. 41 ²) + ( 85 x ( 36. 41 x 2 ))
= 10, 356. 45 m ²
The area of the running track is :
= 14, 659.06 - 10, 356. 45
= 4, 302. 61 m ²
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Tarzan loaded 14 trucks every 35 minutes. At that rate how long in minutes will it take to load 8 trucks
How many possible triangles can be created if measure of angle B equals pi over 6 comma a = 20, and b = 10?
0 triangles
2 triangles
1 triangle
Cannot be determined based on the given information
Based on the given information,
only one triangle is possible.
The correct option is C.
What is a 30-60-90 triangle?It is a triangle with constant angles of 30, 60, and 90. This triangle is always a right triangle, as one of the angles is 90 degrees. Thus, a right-angled triangle is formed by these angles. Additionally, the right angle is equal to the sum of two acute angles, which will have a 1: 2 or 2: 1 ratio.
Given:
The angle measure of B = π/6 = 30°.
a = 20, and b = 10
That means,
m∠A = 2∠B = 2 x 30 = 60°.
Now, there is only one possibility of a triangle, and that triangle is 30-60-90 triangle.
Hence, only one triangle is possible.
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f(x) = (x-7)³, find f¯¹(x).
The inverse function f-¹(x) as required to be determined from the given function; f(x) = (x-7)³ is; f¯¹(x) = ³√x + 7.
What is the inverse function f-¹(x)?It follows from the task content that the inverse function of the given function; f(x) = (x-7)³ is to be determined.
Therefore, let f(x) = y; so that we have;
y = (x - 7)³
make x the subject so that we have;
³√y = x - 7
x = ³√y + 7
By switching the variables; we have;
y = ³√x + 7
Therefore, the required inverse function; f-¹ as required is; f¯¹(x) = ³√x + 7.
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