I need help!! I'm not good at science

Answer:

4ny²+4n²-4n-8+y⁴-2y²

Two and five hundredths is:

The expression that shows how many cupcakes the baker decorated is:

c/2.

A mathematical expression is a combination of numbers, symbols, and/or variables that represents a mathematical relationship or operation. It can be written using various mathematical symbols and notation to convey a specific meaning or instruction.

Mathematical expressions can also include functions, exponents, logarithms, and other mathematical operations that represent specific relationships or computations. They are commonly used in algebra, calculus, geometry, and other branches of mathematics to represent and solve mathematical problems.

The number of cupcakes the baker decorated can be found by dividing the total number of candy eyes by the number of candy eyes needed per cupcake.

If the baker used c candy eyes in total and each cupcake needed 2 candy eyes, then the expression that shows how many cupcakes the baker decorated is:

c/2

Dividing c by 2 gives the number of cupcakes the baker decorated, since each cupcake required 2 candy eyes.

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The number of cupcakes is the total number of candy eyes divided by 2.

What is equation?

A math equation is a method that links two claims and represents equivalence using the equals sign (=). An equation is a mathematical statement that establishes the equivalence of two mathematical expressions in algebra.

The number of cupcakes decorated is equal to the total number of candy eyes divided by the number of candy eyes used per cupcake. So, if c is the number of candy eyes, then the expression that shows how many cupcakes the baker decorated is:

c/2

This is because each cupcake needs 2 candy eyes.

Therefore, the number of cupcakes is the total number of candy eyes divided by 2.

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Answer:

It’s a blank page sorry

Step-by-step explanation:

Given data: 5 workshops from anthropology

8 workshops from psychology

Since we are to select from the workshops, this is a combination question

If from 6 workshops selected, she has to select fewer than 3 from anthropology

This means that there are 3 possible scenarios

case 1:

select 2 from the anthropology and 4 from the psychology workshop

case 2:

select 1 from the anthropology and 5 from the psychology workshop

case 3: select 0 from the anthropology and 6 from the psychology workshop

Therefore the total number of ways will be the sum of all the ways in the cases

= 700+280+28 ways

= 1008 ways

Therefore there are 1008 ways

Using the formula T1/2 = 0.693/λ, we may determine decay from half-life.

The half-life is the amount of time needed for half of the initial population of radioactive atoms to decay.

T1/2 = 0.693/λ describes the relationship between the half-life, T1/2, and the decay constant.

A percentage is used to represent the degradation rate.

Simply decreasing the percent and dividing it by 100 yields the decimal equivalent.

The decay factor b = 1-r can therefore be calculated.

For instance, the exponential function's decay rate is 0.25, and the decay factor b = 1- 0.25 = 0.75 if the rate of decay is 25%.

Nearly all decay processes that are exponential, or nearly exponential, are referred to by the phrase "half-life".

Therefore, using the formula T1/2 = 0.693/λ, we may determine decay from half-life.

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Answer:-3.5

Step-by-step explanation:

zeros of  y = 2x^2 - x - 21 means in there y=0,

so, and one of them (for example x1=3)

\(2x^{2} -x-21=0\\\)

with Vieta theorem,

x1+x2=-p=x/2

x1*x2=q=-21/2

3*x2=-21/2

x2=-7/2

x2=-3.5

Answer: The value of the other zero for the eq y=2x²-x-21 is -5/2.

Step-by-step explanation:

For a quadratic equation, we can find the sum of the zeros by dividing the coefficient of the linear term by the coefficient of the quadratic term (with the opposite sign).

In the given equation,

coefficient of the quadratic term = 2

coefficient of linear term = -1

∴ Sum of zeros= (-(-1))/2 = 1/2

Since one of the zeros is 3

∴ THE OTHER ZERO = Sum of zeros - Known zero = 1/2 - 3 = -5/2

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For 1.) The surface area for the given cylinder =220π

2.) The surface area of the triangular prism = 4,848 in.

To calculate the surface area of the cylinder, Tue formula that should be used is given below;

That is;

surface area of cylinder= 2πrh + 2πr²

where;

radius = 10 mi

height = 9mi

surface area = 2×π×10+2×π×10×10

= 20π+200π

= 220π

For question 2.)

To calculate the surface area of the triangular prism given, the formula that should be used is given below;

Surface area = BH + (B1+B2+B3)L

where;

B = 8 in

H = 6 in

B1 = 8 in

B2 = 6 in

B3 = 10 in

L = 10 in

Surface area = 8×6 + (8+6+10)×10

= 48+4800 = 4,848 in

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The coordinate vector of g(t) relative to the basis F is (-2, 1, -2).

We can do this by equating the coefficients of q(t) and the linear combination of p₁(t), p₂(t), and p₃(t) and solving for c₁, c₂, and c₃. Specifically, we want to solve the system of equations:

c₁ + 2c₂ + 2c₃ = -8

c₁ + 0c₂ + 0c₃ = 0

2c₁ - 3c₂ + 2c₃ = -10

The first equation comes from equating the coefficients of t⁰ in q(t) and the linear combination, the second equation from equating the coefficients of t¹, and the third equation from equating the coefficients of t².

Solving this system of equations, we get c₁ = -2, c₂ = 1, and c₃ = -2. Therefore, we can write q(t) as -2p₁(t) + p₂(t) - 2p₃(t). This means that the coordinate vector of q(t) with respect to the basis F is (-2, 1, -2), which is the vector of scalars that we used to form the linear combination of p₁(t), p₂(t), and p₃(t) that equals q(t).

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V(t) = -$266.67t + $28,500 is the linear model that captures this situation.

What is a linear model?

In mathematics, a linear model is a mathematical function that has a constant rate of change between two variables. The general form of a linear model is given by:

y = mx + b

where "y" and "x" are variables, "m" is the slope of the line, and "b" is the y-intercept (the point where the line crosses the y-axis).

A line's slope is the ratio of change in y (vertical) to change in x. (horizontal). It denotes the pace at which y changes in relation to x. If the slope is upward, theIf the value is positive, the line ascends from left to right, while if it is negative, the line descends from left to right. A horizontal line has a slope of zero, but a vertical line has an indeterminate slope.

A line's y-intercept is the value of y when x is zero. It denotes the point at where the line intersects the y-axis.

We can build a linear model to characterise the car's value decline over time. Let V(t) be the car's worth t years after 2005. Then, using the two data points provided, we can construct two equations:

V(0) = $28,500 (the initial value in 2005)

V(3) = $27,700 (the value in 2008, 3 years later)

Because we are assuming

Because we have a straight line, we can write:

V(t) = mt + b

where m is the slope (annual rate of change) and b is the y-intercept (initial value).

We may use the two equations above to obtain the values of m and b:

V(0) = m(0) + b = $28,500 => b = $28,500

V(3) = m(3) + b = $27,700 = 3m + $28,500 = $27,700 = $27,700 = m = -$266.67/year

As a result, the linear model that best describes this circumstance is:

V(t) = -$266.67t + $28,500

This model reveals that the car's value depreciates at a rate of $266.67 per year, with a starting value of $28,500 in 2005. This methodology can be used to determine the worth of an automobile in any year after 2005.

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Answer:

vGreat job!

You earned

+5 pts

for helping

Step-by-step explanation:

The value of k in the equations is 2/3

From the question, we have the following parameters that can be used in our computation:

y = 9kx - 1

kx + 4y = 12

This can be expressed as

y = 9kx - 1

y = -kx/4 + 3

The slopes of perpendicular lines are opposite reciprocal

This means that

9k * -k/4 = -1

So, we have

k^2 = 4/9

Evaluate

k = 2/3

Hence, the value of k is 2/3

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Answer:

the first one

Step-by-step explanation:

Answer:

679

Step-by-step explanation:

Answer:

i would reword this to 6x+7=61

Step-by-step explanation:

So.  

move the 7 to the right side of the equation but as an opposite number so in this case its gonna be a negative

61-7=54

then you divide the number and get your missing numbers

54/6=9

d=9

plug it in

6(9)+7=61

Answer:

225 sq. Ft

Step-by-step explanation:

Key words in the question;

Dilated - This means increased pr expanded

Scale factor of 3 - This basically means multiplied by 3

Old square = 75 sq. Ft

This means;

New are = Old area * 3

New area = 75 * 3 = 225 sq. Ft

Answer:

The drama club bought 35 t-shirt

Step-by-step explanation:

Let

t-shirt = x

Sweatshirt = y

Total cost = $795

They purchase 20 more tshirts than sweatshirts

x = y + 20

The equation is:

12x + 25y = 795

12(y + 20) + 25y = 795

12y + 240 + 25y = 795

37y = 795 - 240

37y = 555

y = 15

Substitute y = 15 into

x = y + 20

x = 15 + 20

x = 35

t-shirt = 35

Sweatshirt = 15

The drama club bought 35 t-shirt

The estimated coefficient for Fitness Center in a regression analysis represents the expected change in the dependent variable associated with a unit increase in the independent variable.

It tells us how much having a Fitness Center affects the rent price. To determine how much the rent price for a 1-bedroom apartment would be if the complex has a Fitness Center, Parking Space, and Wireless Internet, we would need to know the specific coefficients for each of these independent variables in the regression analysis, as well as the constant term. We could then plug in the values for each variable and calculate the predicted rent price. It is important to note that the estimated coefficient for Fitness Center does not necessarily imply causation. Other factors could be influencing both the presence of a Fitness Center and the rent price, and a regression analysis only captures the relationship between the variables that are included in the model. Additionally, the size and direction of the coefficient can vary depending on the data and methodology used in the analysis.

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Answer:

you must drive 200 miles in a day to make the rental cost for Company A a better deal than Company B's

Step-by-step explanation:

If you rent a truck from Company A, the cost will be 120+0.50m, where m is the number of miles you drive. If you rent a truck from Company B, the cost will be 40+0.70m, where m is the number of miles you drive. To find the number of miles you must drive in a day to make the rental cost for Company A a better deal than Company B's, we need to find the point at which the cost for Company A is less than the cost for Company B. We can do this by setting the two expressions equal to each other and solving for m:

120+0.50m=40+0.70m

120+0.50m-0.70m=40

0.20m=40

m=200

Therefore, you must drive 200 miles in a day to make the rental cost for Company A a better deal than Company B's.

Dimension of box is (50-2X) cm × (50-2X)cm × X cm.

Box can be made from square or rectangular sheets by folded up a certain amount from the each corner of each side length. The amount folded up acts as the height of box.

Given, length and breadth of aluminum sheet = 50 cm and 50 cm

let, X is the amount that is folded up from each corner of each side.

After folded up length of sheet = (50-2X) cm = length of box

   after folded up           breadth of sheet = (50-2X) cm= breadth of box

As a result, height of box = X cm

maximum Volume of box = length x breadth x height

                                         = (50-2X) ² × X

volume of box = X(50-2X) ²

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Given equation of the line is

Dividing both sides of the above equation by -18, we get

The line cuts the x axis at (-9,0) and the y axis at (0,-3).

Therefore, the x intercept is -9 and the y intercept is -3.

The graph of the line is shown below.

Answer:

60%

Step-by-step explanation:

multiply the numerator and denominator by 20 so that the denominator is 100:

\(\implies \dfrac35=\dfrac{3\times20}{5\times20}=\dfrac{60}{100}=60 \%\)

Answer:

3/5 As a percent is 60%

To convert 3/5 to fraction

Therefore, the solution is 60%.

Answer:

m(1)= 77°, m(6)= 56°, m(13)= 77° , m(2)= 103° ,m(8)= 77° ,m(14)= 103°

Step-by-step explanation:

a // b

m(10) = m(1) = 77° (corresponding angles)

m(6) = m(11) (alternate angles)

m(7) = m(12) (alternate angles)

m(10) + m(11) + m(12) = 180°

m(11) = 180° - (77° + 47°) = 56°

m(6) = 56°

m(10) = m(13)= 77° (vertically opposite angles)

m(2) = m(11) + m(12) = 56° + 47° =103°(corresponding angles)

m(8),m(7) and m(11) make a triangle,so.....

m(8) = 180° - (47° + 56°) = 77°

m(14) = m(11) + m(12) = 56° + 47° =103° (vertically opposite angles)

The side length of the large frame is 4 inches longer than the side length of the small frame.

To find the difference in side lengths between the small square frame and the large square frame, we need to find the length of the sides of each frame.

Let x be the length of the side of the small square frame. Then, we know that the area of the small frame is 16 square inches.

Area of small frame = side length of small frame x side length of small frame = 16
\(x^2 = 16\)

Taking the square root of both sides, we get:
\(x = 4 inches\)

So, the length of the side of the small square frame is 4 inches.

Now, let y be the length of the side of the large square frame. We know that the area of the large frame is 64 square inches.

Area of large frame = side length of large frame x side length of large frame = 64
\(y^2 = 64\)

Taking the square root of both sides, we get:
y = 8 inches

So, the length of the side of the large square frame is 8 inches.

To find the difference in side lengths, we subtract the length of the small frame from the length of the large frame:
\(y - x = 8 - 4 = 4\)

Therefore, the side length of the large frame is 4 inches longer than the side length of the small frame.

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Answer:

B.

Step-by-step explanation:

The set of all real numbers where  1≤x<18.

The required, age of Trisha is 15 years old.

Let's represent Trisha's age as "T." Then we can use this variable to represent the ages of her brothers and father as well.

According to the problem, Trisha's first brother is three years older than her, so his age would be T + 3. Her second brother is three years younger than her, so his age would be T - 3. Trisha's third brother is one-third of her age, so his age would be T/3. Trisha's father is three times her age, so his age would be 3T.

The sum of all their ages is 95, so we can create the equation:

T + (T + 3) + (T - 3) + (T/3) + 3T = 95

T = 15

Thus, the required age of the Trisha is 15 years.

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Scatter plot Answ

Step-by-step explanation:

Answer:

64.33 miles per hour

Step-by-step explanation:

Divide the miles by 9 to get the miles per hour.