The number of snow globes that come in each box, given the number of snow globe kits the school used and the number left over is 12 snow globe kits.
How to find the number of snow globe kits?First, find the total number of snow globe kits that the school ordered last year through Mr. Boyd:
= Number of snow globe kits used + Snow globe kits left over
= 122 + 10
= 132 snow globe kits
The snow globe kits per box is:
= Number of snow globe kits ordered / Number of boxes ordered
= 132 / 11
= 12 snow globe kits
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Help me ASAP!!!! I’m so clueless???!!!
Answer:
c
Step-by-step explanation:
18/12 = 15/10 = 9/6 = 3/2
Ellen plan to interview some applications for a position in her office if she scheduled 3/4 of an hour to meet you show them how much time did you schedule for all seven applications
Answer:
5.25 hours
Step-by-step explanation:
The calculation of the time needed to schedule for all seven applications is shown below:
Since 3 by 4 is required of an hour to meet you show them
i.e.
= 3 ÷ 4 of an hour
= 3 ÷ 4 × 60 minutes
= 45 minutes
Now for seven applications, the time would be
= 7 × 45 minutes
= 315 minutes
And, one hour = 60 min.
So, the time required is
= 315 minutes ÷60 minutes
= 5.25 hours
an inverted cone has a height of 15 mm and an initial radius of 16 mm. the volume of the inverted cone is decreasing at a rate of 534 cubic mm per second, with the height being held constant. what is the rate of change of the radius, in mm per second, when the radius is 6 mm?
The rate of change of radius is 2.832 mm per second, when the radius is 6 mm.
A height of cone = 15 mm
An initial radius of cone = 16 mm
The volume of the inverted cone is decreasing at a rate of 534 cubic mm per second, with the height being held constant.
The formula of Volume of cone;
V = 1/3 πr^2h
where, r = radius of the cone and h = height of the cone
To determine the rate of change of the radius we differentiate the volume with respect to t.
dV/dt = 2/3 πrdr/dt h
Now putting the values
534 = 2/3 × 22/7 × 6 × dr/dt × 15
534 = 3,960/21 × dr/dt
Multiply by 21 on both side, we get
3960 dr/dt = 11,214
Divide by 3960 on both side, we get
dr/dt = 2.832
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A radioactive substance has an initial mass of 475 grams and a half-life of 20 days. What equation is used to determine the number of days, x, required for the substance to decay to 63 grams?
The equation used to determine the number of days, x, required for the substance to decay to 63 grams is: x ≈ 83.60
To determine the number of days, x, required for a radioactive substance to decay to 63 grams, we can use the exponential decay formula. The equation that represents the decay of a radioactive substance over time is:
N(t) = N₀ * (1/2)^(t/h)
Where:
N(t) is the remaining mass of the substance at time t
N₀ is the initial mass of the substance
t is the time elapsed
h is the half-life of the substance
In this case, we have an initial mass of 475 grams, and we want to find the number of days required for the substance to decay to 63 grams. We can set up the equation as follows:
63 = 475 * (1/2)^(x/20)
To solve for x, we can isolate the exponential term on one side of the equation:
(1/2)^(x/20) = 63/475
Next, we can take the logarithm (base 1/2) of both sides to eliminate the exponential term:
log(base 1/2) [(1/2)^(x/20)] = log(base 1/2) (63/475)
By applying the logarithmic property log(base b) (b^x) = x, the equation simplifies to:
x/20 = log(base 1/2) (63/475)
Finally, we can solve for x by multiplying both sides of the equation by 20:
x = 20 * log(base 1/2) (63/475)
Using a calculator to evaluate log(base 1/2) (63/475) ≈ 4.1802, we find:
x ≈ 20 * 4.1802
x ≈ 83.60
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Please help me with this homework
Answer:
>
Step-by-step explanation:
The bars around the numbers symbolize absolute value. The absolute value of a number is its distance from 0. Since distance is always positive the absolute value is that number but positive. In this case, 7 is greater than 2. So, the answer is 7>2.
Solve for the exterior angle in the image below?
Answer:
x = 7
Exterior angle = 139°
Step-by-step explanation:
\( (15x + 34) \) is an exterior angle to the ∆ given.
29° and \( (12x + 26) \) are two opposite interior angles of the ∆.
According to the external angle theorem, \( (15x + 34) = 29 + (12x + 26) \)
Solve for x using this expression
\( 15x + 34 = 29 + 12x + 26 \)
\( 15x + 34 = 29 + 26 + 12x \)
\( 15x + 34 = 55 + 12x \)
\( 15x + 34 - 12x = 55 + 12x - 12x \)
\( 15x - 12x + 34 = 55 \)
\( 3x + 34 - 34 = 55 - 34 \)
\( 3x = 21 \)
\( \frac{3x}{3} = \frac{21}{3} \)
\( x = 7 \)
Exterior angle = \( (15x + 34) \)
Plug in the value of x
\( 15(7) + 34 = 105 + 34 = 139 \)
Exterior angle = 139°
In exercises 4-6, solve the literal equation for x. 4. g = 4x + 5xy 5. w = 4ax - 9x 6. z = 6x + ox + 2
Question 4
\(g=4x+5xy \\ \\ g=x(4+5y) \\ \\ x=\frac{g}{4+5y}\)
Question 5
\(w=4ax-9x \\ \\ w=x(4a-9) \\ \\ x=\frac{w}{4a-9}\)
Question 6
\(z=6x+ox+2 \\ \\ z-2=6x+ox \\ \\ z-2=x(o+6) \\ \\ x=\frac{z-2}{o+6}\)
Help !!! Brainlisest
Answer:
(x, y ) → (x + 11, y - 11 )
Step-by-step explanation:
Consider the point U and its image U'
U (- 9, 1 ) → U' (2, - 10 )
This represents a shift of 2 - (- 9) = 2 + 9 = + 11 → in the x- direction and
- 10 - 1 = - 11 ↓ in the y- direction
This can be shown in the translation rule
(x, y ) → (x + 11, y - 11 )
A nearby skating park charges $4 for skates and an hourly rate for each hour.
The sign on the right gives the prices for up to 3 hours of skating. Which linear
equation represents the given information where C is the total cost and h is the
number of hours spent in the park?
1 hour
2 hours
3 hours
$15
$30
$45
The linear function that gives the cost of spending h hours at the park is given by:
C(h) = 2 + mh.
In which m is the hourly rate.
What is a linear function?Two separate but related concepts are referred to as linear functions in mathematics: A polynomial function of degree 0 or 1 is referred to as a linear function in calculus and related fields if its graph is a straight line.
A straight line makes up the graph of a linear function. The following expression describes a linear function. Y equals f(x) = a + bx. Both the independent and dependent variables of a linear function are one. X is an independent variable, whereas Y is a dependent variable.
The three main types of linear equations are the slope-intercept form, standard form, and point-slope form.
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if the man swims at 2 mi/hr, what is the minimum walking speed for which it is quickest to walk the entire distance?
The man should swim the entire distance at 2 miles per hour because the minimum walking speed that would make it quicker to walk the entire distance is infinity, which is not practical.
Let's assume the distance the man needs to travel is d miles. If the man swims at 2 miles per hour, he can swim the distance in d/2 hours. If he walks at a speed of x miles per hour, he can walk the distance in d/x hours. Therefore, the total time T it takes to travel the distance using swimming and walking is:
T = d/2 + d/x = d(1/2 + 1/x)
We want to find the walking speed x that minimizes the total time T. To do this, we can take the derivative of T with respect to x and set it equal to zero:
d(T)/dx = -d/2x^2 + d/x^2 = d/x^2(1/2 - 1) = -d/2x^2
Setting d(T)/dx = 0, we get:
d/2x^2 = 0
Solving for x, we get:
x = infinity
This means that the minimum walking speed for which it is quickest to walk the entire distance is infinity, which is not a practical solution. Therefore, the man should swim the entire distance at 2 miles per hour.
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What is linear regression method?
in 100 words or more.
Linear regression is a statistical method used to model the relationship between a dependent variable and one or more independent variables. It aims to find a linear equation that best fits the observed data points, allowing for the prediction of the dependent variable based on the independent variables.
In more detail, linear regression assumes a linear relationship between the dependent variable and the independent variables. The method estimates the parameters of the linear equation by minimizing the sum of the squared differences between the observed data points and the predicted values. This is typically done using a technique called ordinary least squares (OLS) regression. The resulting linear equation can be used to make predictions or infer the impact of the independent variables on the dependent variable.
Linear regression is widely used in various fields, including economics, finance, social sciences, and machine learning. It provides a simple and interpretable way to analyze and understand the relationship between variables. However, it is important to note that linear regression assumes certain assumptions about the data, such as linearity, independence of errors, and homoscedasticity. Violations of these assumptions can affect the accuracy and reliability of the regression model.
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Someone pls help what would this slope be ?
Answer:
-3/5x
Step-by-step explanation:
It is a negative slope and use rise over run
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Find the slope of the line that passes through the points A(-3, 1) and B(2, -5).
Answer:
\(m = \frac{ - 5 - 1}{2 - ( - 3)} = - \frac{6}{5} \)
In a class of 25 students, 16 have dark hair, 10 have brown eyes, and 4 have both dark hair and brown eyes. If a student chosen at random from this class has dark hair, what
is the probability they also have brown eyes?
A 0.12
(B) 0.72
C 0.25
D 0.80
Consider the shear deformation x = φ (X) with
x1 = X1 + γX2,
x2 = X2 X2,
x3 = X3,
where y(t) is a function of time t. Compute the following quantities:
(a) The deformation gradient F.
(b) The right and left Cauchy-Green deformation tensors C and B.
(a)An function the deformation gradient F is F = 1 γ 0,0 2X2 0,0 0 1
(b The right Cauchy-Green deformation tensor C is C = 1+γ²γ 0,
γ 4X2²0,0 0 1 the left Cauchy-Green deformation tensor B is B = 1+γ² γ 0,γ γ²+4X2² 0,0 0 1.
(a) Deformation Gradient F:
The deformation gradient is defined as the derivative of the deformed coordinates x with respect to the initial coordinates X:
F = ∂x/∂X
Given the shear deformation x = φ(X) with x1 = X1 + γX2, x2 = X2X2, and x3 = X3, we can compute the deformation gradient as follows:
F =∂x1/∂X1 ∂x1/∂X2 ∂x1/∂X3
∂x2/∂X1 ∂x2/∂X2 ∂x2/∂X3
∂x3/∂X1 ∂x3/∂X2 ∂x3/∂X3
Taking the partial derivatives:
∂x1/∂X1 = 1, ∂x1/∂X2 = γ, ∂x1/∂X3 = 0
∂x2/∂X1 = 0, ∂x2/∂X2 = 2X2, ∂x2/∂X3 = 0
∂x3/∂X1 = 0, ∂x3/∂X2 = 0, ∂x3/∂X3 = 1
(b) Right and Left Cauchy-Green Deformation Tensors C and B:
The right Cauchy-Green deformation tensor C is defined as the square of the deformation gradient:
C = F²T × F
The left Cauchy-Green deformation tensor B is defined as the square of the transpose of the deformation gradient:
B = F × F²T
Calculating C:
C = F²T × F
C = 1 0 0
γ 2X2 0
0 0 1
1 γ 0
0 2X2 0
0 0 1
C =1+γ² γ 0
γ 4X2² 0
0 0 1
Calculating B:
B = F × F²T
B = 1 γ 0
0 2X2 0
0 0 1
1 0 0
γ 2X2 0
0 0 1
B = 1+γ² γ 0
γ γ²+4X2² 0
0 0 1
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Assume the random variable x is normally distributed with mean 50 and standard 7 deviation . Find the indicated probability.
In a normal distribution, the mean represents the center of the distribution and the standard deviation represents the spread of the distribution.
The higher the standard deviation, the more spread out the data is. The probability of a specific outcome occurring is given by the area under the curve of the normal distribution that corresponds to that outcome.
For example, if we wanted to find the probability of x being between 45 and 55, we would find the area under the normal curve between those two values. This can be done using a table of standard normal probabilities or by using a calculator or statistical software.
In general, if we know the mean and standard deviation of a normally distributed random variable, we can use that information to find probabilities for specific outcomes or ranges of outcomes.
you'll need to provide a specific range or value of X. Once you have that, you can use the Z-score formula or a standard normal distribution table to determine the probability.
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the blueprints at addison circle is a sculpture that took 18,000 worker-hours to construct using over 410,000 pounds of steel. The piece of art is placed within a traffic circle with a diameter of 133 feet. find the area of the circle. Round to the nearest tenth of a square foot.
Answer:
Area = 13,898.5 ft^2
Step-by-step explanation:
Here, we are tasked with calculating the area of the circle given the value of the diameter.
Mathematically, the area of a circle is;
A = pi * d^2/4
Where d here is 133 feet
A = 22/7 * 133 * 133 * 1/4 = 13,898.5 ft^2
The sum of the digits of a certain two-digit number is 11. When you reverse its digits you increase the number by 45. What is the number?
Answer:
6 and 9.
Step-by-step explanation:
solve for x ?
3(x - 2) = 18
Answer:
X=8
Step-by-step explanation:
3x-6=18
3x=18+6
3x=24
X=24÷3
X=8
Answer:
x=2
Step-by-step explanation:
,...................
9. Jackie is an airline mechanic. Her company pays \( 40 \% \) of the \( \$ 3,900 \) annual cost of group health insurance. How much does she pay for it monthly? (4 points)
Jackie pays $130 monthly for her group health insurance.
To find out how much Jackie pays for her group health insurance monthly, we need to calculate 40% of the annual cost. Given that the annual cost is $3,900 and her company pays 40% of that, we can calculate the amount Jackie pays.
First, we find the company's contribution by multiplying the annual cost by 40%: $3,900 × 0.40 = $1,560. This is the amount the company pays towards Jackie's health insurance.
To determine Jackie's monthly payment, we divide her annual payment by 12 (months in a year) since she pays monthly. So, Jackie's monthly payment is $1,560 ÷ 12 = $130.
Therefore, Jackie pays $130 per month for her group health insurance. This calculation takes into account the company's contribution of 40% of the annual cost, resulting in an affordable monthly payment for Jackie.
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Of which type of equation are there the greatest number:
A )Equations with no solutions
B) Equations with infinitely many solutions
C) Equations with exacly one solution
EXPLAIN YOUR REASONING
The greatest number of equations are available in all the types specified in option A), option B) and option C). So 'all of the above' is the correct choice.
As given in the question,
Let us discuss
option A) Equations with no solutions
examples are:
x+ y = 0
x+ y = 1
Many such pairs of simultaneous linear equations can be formulated and number of such equations possible is infinite.
Let us discuss
option B) Equations with infinitely many solutions
example:
x+ y = 0
Number of such equations possible is infinite.
Let us discuss
option C) Equations with exactly one solution
example:
x=4
Number of such equations possible is infinite.
Therefore, the greatest number of equations are available in all the types specified in option A), option B) and option C). So 'all of the above' is the correct choice.
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Charmaine is on the swim team. Each week she swims a total of 6,000 meters. How many kilometers does she swim each week?
Answer:
1000m = 1 km
:. 6000m=6000/1000 =6km ans
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which point is located on the x-axis?
Answer:
any point that x is 0
Step-by-step explanation:
x - 18 = 20 one step equations
Answer: the answer is x=38
Step-by-step explanation:
X-18=20 we see that 18 is being SUBTRACTED from the x which means we have to do the opposite of subtraction is addition so 20+18=38
To check: you can plug 38 for x and subtract it from 18
Demonstration: 38-18=20
X = 38
Step-by-step explanation:
X-18 = 20
we move the constants (numbers) to one side and keep the variable, unknown on the other side
X= 20+18 (we change the sign whenever we move something to the opposite side)
x= 38
25 - (x+3) = 2(2x+1)
Answer: x = 4
Step-by-step explanation:
25-(x+3)=2(2x+1) Distribute - on left side and 2 on the right side
25-x-3=4x+2 Add or subtract the like terms
-x+22=4x+2 Solve for x
-4x -4x subtract -4x
-5x+22=2
-22 -22 subtract -22
-5x/-5= -20/-5 divide -5 to get x alone
x= 4
Which of the following is true?
xy–y–x+1 = (1+x) (1–y)
xy–y–x+1 = (x–1) (y–1)
xy–y–x+1 = (1–x) (y–1)
xy–y–x+1 = (x–1) (1–y)
plz fast
Answer:
The second one
Step-by-step explanation:
What is the constant of porportionality in the equation y=10;x=2
Answer:
x=2 and y=10
Step-by-step explanation:
Answer:
x = 2 and y = 10
Step-by-step explanation:
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Jane works at a high-end jewelry store. She earns an hourly wage of $10.50, plus a 6% commission on any item she sells. One weekend, Jane works for 5 hours on Saturday and 9 hours on Sunday. She sells $650 worth of jewelry. How much money does she earn that weekend?
Answer:
$186
Step-by-step explanation:
hourly wage: $10.50/hour
commission: 6%
5 hours + 9 hours = 14 hours
14 hours × $10.50/hour = $147
6% of $650 = 0.06 × $650 = $39
total: $147 + $39 = $186
On a number line, suppose the coordinate of A is 0, and AR = 6. What are the possible coordinates of the midpoint of AR?
The possible coordinates for midpoints of the segment are
?
Answer:
The possible coordinates of the midpoint are 3 and -3
Step-by-step explanation:
The given information are;
The coordinate of the point A on a (horizontal) number line = 0
The length of AR =
The coordinate of the midpoint of AR are given as follows;
Coordinate of the midpoint = Coordinate of A ± (Length of AR)/2 which gives;
The possible coordinates of the midpoint as 0 + 6/2 = 3 or 0 - 6/2 = -3
The possible coordinates of the midpoint are 3 and -3