Answer:
32
Step-by-step explanation:
The inequality which best represents the possible combinations of cupcakes and cakes Nancy decorated is 4x + 32y > 224
Given:
Time to decorate cupcake = 4 minutes
Time to decorate cake = 32 minutes
Total time spent decorating last week = more than 224 minutes
number of cupcakes = x
number of cakes = y
The inequality:
4x + 32y > 224
A total of 4 cakes last week4x + 32(4) > 224
4x + 128 > 224
4x > 224 - 128
4x > 96
x > 96/4
x > 24
Is it possible that Nancy decorated 3 cakes and 32 cupcakes last week?4x + 32y > 224
4(32) + 32(3) > 224
128 + 96 > 224
224 > 224
Therefore, it is possible that Nancy decorated 3 cakes and 32 cupcakes last week
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Solve 3x - x + 2 = 12.
O 1) – 5
O 2) 4
0 3 7
4) 5
Answer:
4) 5
Step-by-step explanation:
3x-x+2=12
First, you combine similar terms, so 3x-x which is 2x.
Second, you subtract 2 on both sides which is going to give you 2x=10.
Finally, you divide by 2 on both sides, so the final answer is going to be x=5.
Factor completely.
5x² - 7x + 2
The given equation 5x² - 7x + 2 can be factorized using the factorization method as;(5x - 2)(x-1)
How can the expression be factorized?Factorization in mathematics refers to the process of expressing a given number or expression as a product of two or more factors. In other words, it is the method of breaking down a number or an expression into simpler parts or factors.
Given that 5x² - 7x + 2 =0 whic can be seen as a quadratic equation, from this we can see that (x-1) is one of the factor.
We can re wrirte the expression as 5x² - 5x - 2x + 2 =0, we can see that the new expression is still the same with the original expression , then we can factor out as :
5x(x-1) -2(x-1)
(5x - 2)(x-1)
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The diagram shows a triangle.
All the measurements are in cm.
3x-1
4x + 1
3x
The perimeter of the triangle is 70 cm.
The area of the triangle is A cm².
Work out the value of A.
The area of triangle (A) is 210 cm².
What is the area of the triangle and perimeter of the triangle?
If a, b, and c are the sides of the triangle, then
Perimeter of the triangle = (a + b + c) units.
Area of the triangle = \(\sqrt{(s(s - a) (s - b) (s - c)) }\)
The semi-perimeter of the triangle, s = (a + b + c)/2
Let the triangle is ABC,
and AB = 3x - 1, BC = 4x + 1 and AC = 3x.
Perimeter = 70
AB + BC + AC = 70
3x-1 + 4x + 1 +3x = 70
10x = 70
x = 7
AB = a = 3x - 1 = 20
BC = b = 4x + 1 = 29
AC = c = 3x = 21
Now semi-perimeter = s = 70/2
s = 35
Area of the triangle = \(\sqrt{(s(s - a) (s - b) (s - c)) }\)
\(=\sqrt{35(35-20)(35-29)(35-21)}\\\\\\=\sqrt{35(15)(6)(14)}\\\\=\sqrt{44100}\\\\=210\)
Area of the triangle = 210 square cm.
Hence, the area of triangle (A) is 210 cm².
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what is 2x + 5 = 25 .............................................................????
Answer: x=10
Step-by-step explanation:
1
Subtract
5
from both sides
2
Simplify
3
Divide both sides by the same factor
4
Simplify
Answer:
2x + 5 = 25
25 - 5= 2x
20 = 2x
20 ÷ 2 = 2x ÷ 2
x = 2
Please help, i’ll give brainliest.
Answer:
(f o g)(-5) = -5 fog: (g o f) (-5) is -5 Gof
Step-by-step explanation:
hope that helps
The school doubledutch team needs to raise at least $850 to buy new practice equipment. The team received a donation of $125, and also earns $4 per ticket sold. What is the least number of
tickets that need to be sold for the team to have enough money for the new practice equipment?
181 tickets
Answer:
$850 equipment
$125 from donation
they need $725
Step-by-step explanation:
if they earn $4 per ticket,
725÷4= 181.25
thus they need to sell atleast 182 tickets to have enough money
Answer:
850$ from equipment
and 150$ from it
What is the rectangular equivalence to the parametric equations?
x(θ)=2sinθ+1,y(θ)=3cosθ−2 , where 0≤θ<2π .
Drag a term into each box to correctly complete the rectangular equation.
Notice that
(x - 1)²/4 + (y + 2)²/9 = (2 sin(θ))²/4 + (3 cos(θ))²/9
… = sin²(θ) + cos²(θ)
… = 1
Solve for y in terms of x :
(x - 1)²/4 + (y + 2)²/9 = 1
(y + 2)²/9 = 1 - (x - 1)²/4
(y + 2)² = 9 - 9/4 (x - 1)²
y + 2 = ± √(9 - 9/4 (x - 1)²)
y + 2 = ± 3/2 √(4 - (x - 1)²)
y = -2 ± 3/2 √(4 - (x - 1)²)
In order for the square root to be defined, one needs
4 - (x - 1)² ≥ 0
(x - 1)² ≤ 4
-2 ≤ x - 1 ≤ 2
-1 ≤ x ≤ 3
so x must belong to the interval [-1, 3].
assume that there is no relationship between favorite hogwarts elective and hogwarts house among all witches and wizards who attended hogwarts 1. what is the expected chi-square test statistic value? 2. what is the standard deviation?
Answer: To answer this question, we need to know the number of individuals in each combination of Hogwarts elective and house. Without this information, we cannot calculate the expected chi-square test statistic value or the standard deviation.
Assuming we have this information, we can calculate the expected chi-square test statistic value as follows:
Set up a contingency table with the observed frequencies in each cell and the row and column totals.
Calculate the expected frequency for each cell by multiplying the row total by the column total and dividing by the total sample size.
Calculate the chi-square test statistic by summing the squared differences between the observed and expected frequencies for each cell and dividing by the expected frequency for each cell.
The formula for the standard deviation of the chi-square test statistic depends on the degrees of freedom, which is equal to the number of rows minus one multiplied by the number of columns minus one. Once we have calculated the expected chi-square test statistic value and degrees of freedom, we can calculate the standard deviation using the formula:
sqrt(2 * df)
where "df" is the degrees of freedom.
Without the necessary information about the frequencies, we cannot provide a numerical answer to this question.
Step-by-step explanation:
Almonds cost $12 per 3 pounds. How many pounds can I buy with $20?
Answer:
6 pounds
Step-by-step explanation:
Answer:
5 pounds
Step-by-step explanation:
12 divided by 3 = 4
20 divided by 4 = 5
HELLLPP PLLS
The Graph shows the total?!
for the function f(x)=x4−2x2 3. Determine the inflection point(s) of f .
the answers should be in ascending order of x values. use decimals (rounded to 2 decimal places).
The inflection points of the function f(x) = x⁴ - 2x²/3 are at
x = -0.77 and x = 0.77.
To find the inflection points of the function f(x) = x⁴ - 2x²/3, we need to locate the x-values where the concavity of the function changes.
This can be done by finding the second derivative of the function and determining where it equals zero.
First, let's find the second derivative of f(x):
f''(x) = 12x² - 4x/3
Setting f''(x) equal to zero and solving for x:
12x² - 4x/3 = 0
4x(3x - 1) = 0
This equation is satisfied when x = 0 and x = 1/3. However, we need to check the concavity around these points to confirm if they are inflection points.
By analyzing the sign of f''(x) in the intervals (-∞, 0), (0, 1/3), and (1/3, ∞), we observe that the concavity changes at x = -0.77 and x = 0.77.
These are the inflection points of the function f(x).
Therefore, the inflection points of f(x) = x⁴ - 2x²/3 are at x = -0.77 and x = 0.77.
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AB=AD and BC=DC What is y equal to? Please show your work of how you got the answer.
The measure of the angle y is 49 degrees if AB=AD and BC=DC; the answer is 49 degrees.
What is quadrilateral?It is defined as a four-sided polygon in geometry having four edges and four corners. The kite is quadrilateral, having two pairs of congruent sides and it has one pair of opposite congruent angles.
The kite is given in the picture.
AB = AD
BC = DC
∠DBC + ∠CBD + ∠C = 180
From the property of kite: ∠DBC = ∠CBD
y + y + 82 = 180
y = 98/2
y = 49 degrees
Thus, the measure of the angle y is 49 degrees if AB=AD and BC=DC; the answer is 49 degrees.
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A salsa recipe uses green pepper, onion, and tomato in the extended ratio 1 : 5 : 7. How many cups of onion are needed to make 117 cups of salsa?
Answer:
We need 45 cups on onion
Step-by-step explanation:
green pepper : onion: tomato: total
1 5 7 13
We have 117 total so divide by 13
117/13 = 9
Multiply each number by 9
green pepper : onion: tomato: total
1*9 5*9 7*9 13*9
9 45 63 117
We need 45 cups on onion
2(3n + 7) > 5n
Thanks
Answer:
n= -5/3. 3n+7>2, 3n>2-7, 3n>-5
If Joshua borrows $300 from his older sister to buy a bike and he promises to pay the total amount plus 5% simple interest in one year how do I describe how to find the total amount to pay on a loan when paying simple interest
Answer:
you multiply 300 by 5 % and that gives you 15
Step-by-step explanation:
Graph: y – 3=1/2(x+2)
Please this is urgent I need help
Show workings
Answer:
47.5°
Step-by-step explanation:
(2x+10)°+75°= 180°------ sum of angles of a triangle
or, (2x+10°)=180°-75°
or, (2x+10°)=105°
or, 2x=105°-10°
or,2x=95°
or, x= 95÷2
therefore, x=47.5°
Answer:
x=21.25
Step-by-step explanation:
The lower two angles will be equal in an isosceles triangle and all angles in a triangle add up to 180 degrees so:
75+(2x+10)+(2x+10)=180
75+4x+20=180
4x=85
x=21.25
(both lower angles=52.5 degrees)
Proof:
52.5+52.5+75=180
IN NEED OF HELP!! 15 POINTS!!
Answer:
D
Step-by-step explanation:
If you draw a line in the middle of the w they will look the same
Answer:
it would be letter D
Step-by-step explanation:
continuing with the previous problem, find the equation of the tangent line to the function at the point (2, f (2)) = (2, 4) . show work and give tangent line in the form y = mx b .
The required answer is the equation of the tangent line to the function at the point (2, f(2)) = (2, 4) is y = 6x - 8.
To find the equation of the tangent line to the function at the point (2, f(2)) = (2, 4), we need to first find the derivative of the function at x = 2.
Assuming we have the original function loaded in content, we can find the derivative as follows:
f(x) = x^2 + 2x
f'(x) = 2x + 2
The tangent line touched the a curve can be made more explicit by considering the sequence of straight lines passing through two points, A and B, those that lie on the function curve. The tangent at is the limit when points ,approximates or tends .
If two circular arcs meet at a sharp point then there is no uniquely defined tangent at the vertex because the limit of the progression of secant lines depends on the direction in which "point B" approaches the vertex.
The existence and uniqueness of the tangent line depends on a certain type of mathematical smoothness, known as "differentiability."
Now we can plug in x = 2 to find the slope of the tangent line at that point:
f'(2) = 2(2) + 2 = 6
So the slope of the tangent line is m = 6.
To find the y-intercept (b) of the tangent line, we can use the point-slope form of a line:
y - y1 = m(x - x1)
Plugging in the point (2, 4) and the slope we just found, we get:
y - 4 = 6(x - 2)
Simplifying and solving for y, we get the equation of the tangent line in slope-intercept form:
y = 6x - 8
Therefore, the equation of the tangent line to the function at the point (2, f(2)) = (2, 4) is y = 6x - 8.
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Gina is 16 years older than her nephew Paul. In 3 years, she will be 3 times older than Paul. How old are Gina and Paul currently?
9514 1404 393
Answer:
Paul: 5Gina: 21Step-by-step explanation:
In 3 years, the 16-year age difference will be 2 times Paul's age. (3p -p = 2p) Then, Paul will be 8.
Paul is 5 now, and Gina is 21.
Find the limit. (If the limit is infinite, enter '[infinity]' or '-[infinity]', as appropriate. If the limit does not otherwise exist, enter DNE.)
lim x → −[infinity]
1 − x − x2
9x2 − 8
The limit of the given function as x approaches negative infinity is -2/9.
How to find limit?To find the limit of the given function as x approaches negative infinity, we will first analyze the function:
lim (x → -[infinity]) [(1 - x - x^2) / (9x^2 - 8)]
To analyze the limit at infinity for such functions, we can consider the highest degree terms of both the numerator and the denominator. The highest degree term in the numerator is -x^2, and the highest degree term in the denominator is 9x^2.
Now, we can divide both the numerator and the denominator by 9x^2:
lim (x → -[infinity]) [(1/9x^2) - (x/9x^2) - (x^2/9x^2)] / [(9x^2/9x^2) - (8/9x^2)]
lim (x → -[infinity]) [(-1/9) + (1/x) - (1/9)] / [(1) - (8/9x^2)]
Now, as x approaches negative infinity, the terms (1/x) and (8/9x^2) will approach zero:
lim (x → -[infinity]) [(-1/9) - (1/9)] / [1]
lim (x → -[infinity]) (-2/9) / [1]
The limit of the given function as x approaches negative infinity is -2/9.
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What are the coordinate pairs of this??
Answer:
A is (-4,-3) and B is (6,-5)
Step-by-step explanation:
A physical count of supplies on hand at the end of may for Masters, inc. Indicated $1,253 of supplies on hand. The general leger balance before any adjusting is $2,130. What is the adjusting entry for office supplies that should be recorded on may 31?
Answer: Debit Supplies Expense $877 and credit Supplies $877
Step-by-step explanation:
From the question, we are informed that a physical count of supplies on hand at the end of may for Masters, inc. showed $1,253 of supplies on hand while the general leger balance before any adjusting is $2,130.
The adjusting entry for office supplies that should be recorded on may 31 will be the difference in the physical count and general ledger balance which is ($2130 - $1253) = $877. We then have to debit Supplies expense $877 and then credit supplies $877
Which of these shapes have an area
Answer:
Shape 2 and 3
Step-by-step explanation:
shape 1 is not enclosed so it cannot have area
The graph represents the distribution of the lengths of play times, in minutes, for songs played by a radio station over one hour.
A graph shows the horizontal axis numbered 2.6 to x. The vertical axis is unnumbered. The graph shows an upward trend from 2.8 to 3.4 then a downward trend from 3.4 to 4.
Which statement is true about the songs played during the one-hour interval?
Most of the songs were between 3 minutes and 3.8 minutes long.
Most of the songs were 3.4 minutes long.
Most of the songs were less than 3.2 minutes long.
Most of the songs were more than 3.6 minutes long.
The correct statement is Most of the songs were between 3 minutes and 3.8 minutes long.
Based on the given information from the graph, we can determine the following:
The graph shows an upward trend from 2.8 to 3.4 on the horizontal axis.
Then, there is a downward trend from 3.4 to 4 on the horizontal axis.
From this, we can conclude that most of the songs played during the one-hour interval were between 3 minutes and 3.8 minutes long. This is because the upward trend indicates an increase in length from 2.8 to 3.4, and the subsequent downward trend suggests a decrease in length from 3.4 to 4.
Therefore, the correct statement is:
Most of the songs were between 3 minutes and 3.8 minutes long.
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Answer:
A
Step-by-step explanation:
what parameter do we make inference on in slr to test for a linear relationship?question 11select one:a.anova tableb.slopec.interceptd.standard deviatione.correlation
To test for a linear relationship in simple linear regression (SLR), we make an inference on the parameter "slope." A significant slope indicates a linear relationship between the independent and dependent variables.
The parameter we make inferences on in simple linear regression (SLR) to test for a linear relationship is the slope. The slope represents the change in the response variable for a one-unit increase in the predictor variable, and it indicates the strength and direction of the linear relationship between the two variables.
In statistics, simple linear regression is a linear regression model with explanatory variables. That is, it contains two sample points with one independent and one dependent variable (usually x and y coordinates in the Cartesian coordinate system) and shows the line as the function (a non-continuous line) that is the true value of the dependent variable. the variable is approximately a function of the independent variable. The adjective simply refers to the fact that different outcomes are associated with a different predictor.
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What do you get when you cross a pig, a sheep, and a fir tree
Answer:
porky-pine
Step-by-step explanation:
f68viyv7tx57d7rz47ze6z6exurxtuxruxr6xr7xrxe5z6exticrxr6xr6x
true/false: a base class cannot contain a pointer to one of its derived classes.
The statement a base class cannot contain a pointer to one of its derived classes is false because a base class can indeed contain a pointer to one of its derived classes.
In object-oriented programming, a base class can have a pointer to one of its derived classes. This is known as upcasting or polymorphism. Upcasting allows for the flexibility of treating derived class objects as instances of the base class.
By using pointers, a base class can refer to derived class objects and access their member functions and variables. This enables the base class to work with different derived classes without needing to know their specific types.
Pointers to derived classes can be stored in base class member variables or passed as function parameters. This allows for dynamic binding and the ability to invoke overridden functions based on the actual derived class type at runtime.
This concept is fundamental to achieving polymorphism and code reusability in object-oriented programming languages like C++ and Java. It facilitates the implementation of inheritance hierarchies and the ability to work with objects of different derived classes through a common base class interface.
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WILL GIVE BRAINLIEST!! NEED ANSWERS!! Equations. 1. 4x-2-2x-6= -20
2. 3x+2-x+4= -14
3. 5x+6-4x-2=16
4. x+2+x+3=18
5. -2x-4+4x+2= 14
6. -3x= -9
7. -2x = 10
8. x+4 = 16
9. x-2= -15
Answer:
1. x = -6
2. x = -10
3. x = 12
4. x = 13/2 (can be rewritten as 6 1/2 or 6.5)
5. x = 8
6. x = -3
7. x = -5
8. x = 12
9. x = -13
2 parallelograms. The pre-image is smaller than the image.
How can you tell that this transformation is a dilation?
The figure flipped upside down.
The figure changed size.
The figure completed a half turn.
The figure did not change.
Answer: The figure changed size.
Step-by-step explanation: Dilations change the sizes of shapes. They can either make them bigger or make them smaller.