ANYONE GOOD AT MATH!? PLEASE HELP!!​

Answer:

To determine which cream cheese is a better buy, we need to compare the price per unit of volume for each brand.

For Brand Y cream cheese:

Price per unit = 44 AED / 220 ml = 0.2 AED/ml

For Brand Z cream cheese:

Price per unit = 100 AED / 470 ml = 0.2127 AED/ml

Since the price per unit of volume for Brand Y cream cheese is 0.2 AED/ml and the price per unit of volume for Brand Z cream cheese is 0.2127 AED/ml, Brand Y cream cheese is cheaper per unit of volume. Therefore, Brand Y cream cheese is a better buy.

The ordered pair of coordinates is (0, 28)

To answer to the question given, we have to find the point on the line that goes through the points given in the table when the x-axis represents the month of the year  and the y-axis represents the average temperature for that month.

We can read out this ordered pair from the attached graph

In conclusion, the graph displays the point on that line which is on the y-axis is (0, 28).

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Suppose Fawn plans to take a sample to determine a 90 percent confidence interval for the population mean weight of chocolate in every package. Fawn should take a sample size of at least 43, to have a 90% confidence interval of plus or minus 3 grams in the weight of chocolate in every package.

Generally, Fawn can use the formula for the sample size needed to estimate a population mean with a certain level of confidence:

n = (z*σ / E)^2

Where:

So the sample size needed is:

n = (1.645 * 12 / 3)^2

n= (5.48)^2

n = 43.296

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Answer:  Lily babysits for less than 4 hours.

Step-by-step explanation:

We can start by multiplying 4 hours by 7/8 to find out how many hours Lily spends babysitting.

4 * (7/8) = 7/2 = 3.5 hours

Since 3.5 is less than 4, Lily babysits for less than 4 hours.

Answer: Less than 4. (3 1/2 hours)

Step-by-step explanation:

When you multiply a number by a number smaller than 1, the answer gets smaller.

Lily babysits for 3 1/2 hours because 4 x 7/8 = 3 1/2

Answer: This is evaluataion, To evaluate an algebraic expression means to find the value of the expression when the variable is replaced by a given number.

Step-by-step explanation: In this situation you are going to divide the numerator and denominator by 2. For example 2/8 makes 1/4. 1/4 is equivalent to 2/8 but not fully simplified.

Another way to solve this is to reduce to lowest terms. For example, 5/15 is reduced by dividing the numerator and denominator by 5 to get 1/3.

Divide the numerator and denominator to get a decimal form of the fraction or divide 5+2 by 3+6

Answer:

A = $400, B = $300, C = $240

Step-by-step explanation:

The ratio will be [tex]\frac{20}{60}:\frac{15}{60}:\frac{12}{60}[/tex], that means the total of them is (20 + 15 + 12 = 47).

Divide $940 by 47 to find the value of 1 unit [tex]\frac{940}{47}=20[/tex]

A = 20 × 20 = $400

B = 20 × 15 = $300

C = 20 × 12 = $240

Answer:

The domain of a function is the set of all input values (x-values) for which the function produces a valid output (y-value). In the case of the function H(x) = x+2/x^2+4x+4, we need to find the values of x for which the denominator x^2+4x+4 is not equal to zero.

x^2+4x+4 = 0

(x+2)^2 = 0

The denominator is always non-zero as the square of any real number is always positive. Therefore, the function H(x) = x+2/x^2+4x+4 is defined for all real values of x. Therefore, the function H(x) does not have any values that are not in its domain.

Step-by-step explanation:

Answer:

95 6/7

Step-by-step explanation:

The perimeter can be found by adding the length and width together and then multiplying the sum by 2.

Perimeter = 2(L + W)

Where L is the length and W is the width.

So, using the given measurements:

Perimeter = 2(33 5/7+ 14 3/14) = 94 26/14

94 26/14 -> 95 12/14 -> 95 6/7

Answer:

The perimeter is [tex]95\frac{6}{7}[/tex] inches.

Step-by-step explanation:

The formula for the perimeter of a rectangle is

[tex]P=2L+2W[/tex]

We are given the length and the width. Lets evaluate the perimeter.

First lets convert the length and width to an improper fraction.

Length: [tex]33\frac{5}{7}[/tex]

To write 33 as a fraction with a common denominator, multiply by [tex]\frac{7}{7}[/tex]. Then simplify.

[tex]\frac{33*7}{7} +\frac{5}{7}[/tex]

[tex]\frac{231}{7} +\frac{5}{7}[/tex]

[tex]\frac{231+5}{7}[/tex]

[tex]\frac{236}{7}[/tex]

Width:

To write 14 as a fraction with a common denominator, multiply by [tex]\frac{14}{14}[/tex]. Then simplify.

[tex]\frac{14*14}{14} +\frac{3}{14}[/tex]

[tex]\frac{196}{14} +\frac{3}{14}[/tex]

[tex]\frac{196+3}{14}[/tex]

[tex]\frac{199}{14}[/tex]

Lets enter the 2 fractions into the perimeter equation.

[tex]P=(2*\frac{236}{7} )+(2*\frac{199}{14} )[/tex]

Simplify each term.

[tex]P=\frac{2*236}{7} +2*\frac{199}{14}[/tex]

[tex]P=\frac{472}{7} +2*\frac{199}{14}[/tex]

Factor 2 out of 14.

[tex]P=\frac{472}{7} +2*\frac{199}{2(7)}[/tex]

Cancel the common factor of 2.

[tex]P=\frac{472}{7} +\frac{199}{7}[/tex]

Combine the numerators over the common denominator.

[tex]P=\frac{472+199}{7}[/tex]

[tex]P=\frac{671}{7}[/tex]

[tex]P=95\frac{6}{7}[/tex]

Answer: y= 5x - 9

Hope this will help

Answer:

y=5x-9

Step-by-step explanation:

In y=mx+b, m is the slope and b is the y intercept all you have to do is replace m and b with the numbers associated in the problem this case since 5 is the slope you put it where m is, and b being the y-intercept you put the -9 there!

The observed time cycles of five given elements are 2.1, 1.01, 3.4, 4.1, 1.5 respectively

To determine the observed time (OT),

The observed time (OT) of each cycles will be added together for each element. and divided by total number of cycles for each element.

This is done in the following ways

1) (1.2+2.0+2.2+2.1+2.1)/5 = 10.5/5 = 2.1

2) (1.1+1.0+1.2) = 3.3/3 = 1.1

3) (3.4+3.5+3.3+3.5+3.4+3.3)/6 = 20.1/6 = 3.4

4) 4.0+4.2)/2 = 8.2/2 = 4.1

5) (1.4+1.4+1.5+1.5+1.5+1.4)/6 = 8.7/6 = 1.5

therefore each elements total cycle OT is added and then it is divided with each elements relevant number of cycles and this as a result provides the answer to the question

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The midpoint of f(x) over the interval [1, 2] is 4.8655

Generally, The point that represents the precise midway point between an interval's beginning and ending points is known as the midpoint of the interval. It may be determined by calculating the average of the two values that serve as endpoints.

For instance, the value 5 would represent the point that is exactly in the middle of the interval [3,7].

The midpoint of the interval [1, 2] is

(1 + 2) / 2

= 1.5.

To calculate the value of f(x) at x = 1.5, we need to substitute 1.5 for x in the function:

f(1.5) = 6 * ln(1.5^2)

= 6 * ln(2.25)

= 6 * 0.83

= 4.8655

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Answer:

make the x and y variables to each other variables by addition or subtraction

173x-7x +4y-4y=5

166x + 0y=5

166x =5

x= 166/5

x=33.2

The production of congruent figures involves stiff rigid transformation Even if you could imagine them as forms that "appear exactly the same," congruent figures.

During accurate modification of a geometric object, distance between each point pair is maintained. In other words, precise transformations maintain an object's size and shape. For instance, the angles and lengths of a triangle are preserved throughout a rigid transformation. Imagine a stiff shape, such as one made of cardboard, distorting. Even when the shape is rotated, mirrored, and moved left and right, nothing changes.

Here,

When I used putty to create a mold, it was the opposite. After that, users can stretch and twist the objects.

These ratios are not exact though. The distance between every pair of points is altered when the shape is stretched.

Applying rotations, reflection, and translations—three different forms of transformations—can result in congruent shapes.

In reality, by mixing any or all of these three transformations, any congruent shape pairs can be matched to one another.

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The complete question is " Do rigid transformations make congruent figures?"

Answer: To find the percent increase in average movie theater ticket price, you can use the formula:

percent increase = (new value - old value) / old value * 100

Plugging in the values, we get:

percent increase = ($8.53 - $6.96) / $6.96 * 100 = 22.9%

So, the percent of increase in average movie theater ticket price for the 10-year period from 2007 to 2017 is 22.9%.

Step-by-step explanation:

The lateral surface area of the triangular prism is 364.1 square inches.

The Surace area of any 2D or 3D figure is the outer area of the given figure.

Surface areas are of two types they are lateral surface area when we exclude the areas of top and bottom and total surface area is when we include all the sides.

From the given diagram and the concept of lateral surface area where the base and top are excluded here, it has only the base area as the top results to a point.

Therefore, The lateral surface area of this isosceles triangular prism is,

Two rectangles have a length of 17 inches and a width of 9 inches in addition to two triangles having a base of 7 inches and a height of 8.3 inches which is,

= 2(17×9) + 2[(1/2)×7×8.3) square inches.

= 306 + 58.1 square inches.

= 364.1 square inches.

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The largest snack Sasha can make while still using the correct ratio of ingredients is 555g.

An ordered pair of numbers a and b, represented as a / b, is a ratio if b is not equal to 0. A proportion is an equation that sets two ratios at the same value. The numerical relationship between two values demonstrates how frequently one value contains or is contained within another.

Given that after school Sasha likes to make snacks by mixing raisins and nuts in a ratio of 3:5 when she checked the cupboard today there were only 60g of raisins and 75g of nuts left.

The largest snack Sasha can make while still using the correct ratio of ingredients is calculated as,

E = ( 60 x 3 + 75 x 5 )

E = 180 + 375

E = 555 g

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Based on the given derivative function, the function f is decreasing for a < x < b, because f'(x) < 0 for a < x < b (A).

The given derivative function is the first derivative of function f(x), where:

f'(x) = x² - (a+b) x + ab = (x - a) (x - b)

a < b

Since the first derivative function f'(x) is still in the form of x²  function, we can deduce that the original function f(x) has 2 extreme points, the maximum and the minimum. Those extreme points are (x = a) and (x = b).

However we cannot determine which one is the maximum point and which is the minimum one. We need to do another derivative work and check the second derivative function for each extreme points relevant to zero (0).

f'(x) = x²  - (a+b) x + ab

f''(x) = 2x - (a+b)

(x = a)

f''(a) = 2(a) - (a+b)

f''(a) = 2a - a - b

f''(a) = a - b < 0 --> because a < b

(x = b)

f''(b) = 2(b) - (a+b)

f''(b) = 2b - a - b

f''(b) = b - a > 0 --> because a < b

Based on the second derivative function, we can define that (x = a) is the maximum point because f''(a) < 0 and (x = b) is the minimum point because f''(b) > 0. Then the value of f(x) between a < x < b should be on a downward slope.

However wee need to reconfirm this statement by choosing one set of random number that meet the rules of a < x < b. For this time, we use:

a = 1

b = 3

x = 2

Then:

f'(x) = x² - (1 + 3) x + (1) (3)

f'(x) = x²  - 4x + 4

(x = 2)

f'(2) = (2)²  - 4(2) + 3

f'(2) = 4 - 8 + 3

f'(2) = -1 < 0 --> supported statement A

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Value of g(x) with given values of x:

                      x -5 -4 -3 -2 -1

                   g(x) 7 1 -1 1 7

Given: the functional equation:

                          g(x) = 2(x + 3)^2 – 1

Solution:

Value of g(x), when x= -5

g(x) = 2 (-5 +3)^2 – 1

      = 2 (-2)^2 – 1

      = 2* (-2)* (-2) – 1

      = 8 – 1

      = 7

Value of g(x), when x= -4

g(x) = 2 (-4 +3)^2 – 1

      = 2 (-1)^2 – 1

      = 2* (-1)* (-1) – 1

      = 2 – 1

      = 1

Value of g(x), when x= -3

g(x) = 2 (-3 +3)^2 – 1

      = 2 (0)^2 – 1

      = 2* 0  – 1

      = 0 – 1

      = - 1

Value of g(x), when x= -2

g(x) = 2 (-2 +3)^2 – 1

      = 2 (1)^2 – 1

      = 2* (1)* (1) – 1

      = 2 – 1

      = 1

Value of g(x), when x= -1

g(x) = 2 (-1 +3)^2 – 1

      = 2 (2)^2 – 1

      = 2* (2)* (2) – 1

      = 8 – 1

      = 7

Answer:

Step-by-step explanation:

Anazlysing the conditions given in the question we can  conclude that there is a statistically significant increase in the consensus estimate of economists.

Financial analysts often use the whisper number, which is a late-breaking estimate of a key economic indicator, to make predictions about the stock market and inform their investment decisions. They may use it to identify potential opportunities for buying or selling stocks based on whether the whisper number is higher or lower than expected.

While the whisper number can provide insight into the current economic conditions, it is not a foolproof way to predict the stock market. It is just an estimate based on a sample of economists' predictions and can be affected by various unpredictable factors. Therefore, it's important to take other economic indicators and market conditions into account when making investment decisions.

To conduct a hypothesis test, we need to first define the null hypothesis and alternative hypothesis.

Null Hypothesis: The whisper number (sample mean) is equal to the consensus estimate (population mean)

H0: μ = 250,000

Alternative Hypothesis: The whisper number (sample mean) is greater than the consensus estimate (population mean)

H1: μ > 250,000

The next step is to calculate the test statistic and p-value. We can use a one-tailed t-test since the sample size is less than 30 and we don't know the population standard deviation.

Test statistic:

t = (266,000 - 250,000) / (24,000 / sqrt(20))

P-value:

Using the t-distribution table with 19 degrees of freedom, the p-value is less than 0.01, which is the significance level we set.

Since the p-value is less than the significance level (0.01), we can reject the null hypothesis and conclude that there is a statistically significant increase in the consensus estimate of economists.

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Answer:

Step-by-step explanation:

The company will need to hire approximately 200 freelancers in order to complete the remaining 40,000 hours of work. This is because each freelancer works 200 hours per month, so in order to complete the 40,000 hours of work in the last 4 months, the company will need to hire 200 freelancers.

Salut/Hello!

Answer: a) 90 tiles ; b) 3 m

Step-by-step explanation:

a) First we need to imagine a drawing of the empty worktop. We know the width is equal to 6 tiles and the length is equal to 15 tiles. If the shorter edge fits 6 tiles then we have 6 sets of 15 tiles.
6 x 15 = 90 tiles

b) We know the length of one tile is 20 cm so the length of 15 tiles that fit in the worktop is equal to 300 cm or 3 m

I hope it was helpful!

a) To cover the workshop, he has to use 90 tiles altogether.

b) The length of the workshop is 3 meters.

We know that the area of the rectangle is

Area =  length × width

Here shorter edge is called width and the longer edge is called length.

Also given that,

The tiles required to cover the shorter edge are 6 tiles.

The tiles required to cover the longer edge are 15 tiles.

so, the total tiles required to cover the worktop are

Area = 15 tiles × 6 tiles

= 90 tiles

Therefore, 90 tiles are required to cover the worktop.

To find the length of the worktop,

Required length = length of each tile × no. of tiles

By applying the formula,

Required length = 20 cm × 15

= 300 cm

1 meter = 100 centimeteres

Therefore, the length of the worktop is 3 meters.

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Using the details given, the area of the triangle in which the angles lies between the two sides is 90.3 units²

The area of a triangle can be calculated using the formula A = 1/2bh, where b is the base of the triangle and h is the height. Area of a triangle can be calculated using the formula: Area = (base x height) / 2, where base is the length of one side and height is the length of the side that forms the angle. In order to use this formula, you must know the length of two sides and the measure of the angle between them. However, this formula is subjective to details given

The area of a triangle can be calculated by

A = a×b×sinθ

a = 15

b = 8.1

θ = 132°

Substituting the values into the formula

A = 15 × 8.1 × sin 132

A = 90.3 units²

The area of the triangle is 90.3 units²

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Answer:

Step-by-step explanation:

a. The least square regression equation of Y on X is: Y = 3.08X - 127.82

b. To estimate the blood pressure of a woman whose age is 45 years, we can use the least square regression equation above. Substituting X = 45, we get: Y = 3.08(45) - 127.82 = 143.46. Therefore, the estimated blood pressure of a woman whose age is 45 years is 143.46.

Answer:

The answer is 3x-11

Step-by-step explanation:

x+x+x-11 = 3x-11. I'm assuming the answer is an algebraic equation.

The shape of the ABCD is a rhombus. The diagonals are not equal to each other.

What is the 2-dimensional shape?

A 2d shape is a two-dimensional shape with horizontal and vertical axes (x-axis and y-axis). 2D shapes are flat shapes with only length and width. These shapes have no thickness or height.

Given the vertices of ABCD are  A(-3,0), B (1,5), C(-3,10) and D(-7,5).

The formula distance between points (x₁, y₁) and (x₂, y₂) is √[(x₂ - x₁)² + (y₂ - y₁)²].

The distance between A and B is √[(1 - (-3))²+(5 - 0)²] = √(4²+5²) = 6.4

The distance between B and C is √[(-3 - 1)²+(10 - 5)²] = √(4²+5²) = 6.4

The distance between C and D is √[(-7 - (-3))²+(5 - 10)²] = √(4²+5²) = 6.4

The distance between A and D is √[(-7 - (-3))²+(5 - 0)²] = √(4²+5²) = 6.4

The distance between A and C is √[(-3 - (-3))²+(10 - 0)²] = √(10²) = 10

The distance between B and D is √[(-7 - 1)²+(5 - 5)²] = √(8²) = 8

The slope of a line passes through the points (x₁, y₁) and (x₂, y₂) is (y₂ - y₁)/(x₂ - x₁).

The slope of AB is (5-0)/(1-(-3))=5/4

The slope of BC is (10-5)/(-3-1)=-5/4

The slope of CD is (5-10)/(-7-(-3))=5/4

The slope of AD is (5-0)/(-7-(-3))=-5/4

The number of vertices of the quadrilateral is 4.

Thus it is either a square or rectangle or rhombus or parallelogram.

Since the length of all sides is equal thus it is either a square or rhombus.

Since the diagonals are not equal it is a rhombus.

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Answer:

y(y-5) =750 squared-feet

Step-by-step explanation:

[tex] {y}^{2} - 5y = 750 \\ 750 - y(y - 5) = 0 \\ (y + 25)(y - 30) = 0[/tex]

The shape of the ABCD is a rhombus. The diagonals are not equal to each other.

What is the 2-dimensional shape?

A two-dimensional shape with horizontal and vertical axes is known as a 2d shape (x-axis and y-axis). Two-dimensional shapes have only length and width. There is no thickness or height to these shapes.

Given the vertices of ABCD are  A(-3,0), B (1,5), C(-3,10) and D(-7,5).

The formula distance between points (x₁, y₁) and (x₂, y₂) is √[(x₂ - x₁)² + (y₂ - y₁)²].

The distance between A and B is √[(1 - (-3))²+(5 - 0)²] = √(4²+5²) = 6.4

The distance between B and C is √[(-3 - 1)²+(10 - 5)²] = √(4²+5²) = 6.4

The distance between C and D is √[(-7 - (-3))²+(5 - 10)²] = √(4²+5²) = 6.4

The distance between A and D is √[(-7 - (-3))²+(5 - 0)²] = √(4²+5²) = 6.4

The distance between A and C is √[(-3 - (-3))²+(10 - 0)²] = √(10²) = 10

The distance between B and D is √[(-7 - 1)²+(5 - 5)²] = √(8²) = 8

The slope of a line passes through the points (x₁, y₁) and (x₂, y₂) is (y₂ - y₁)/(x₂ - x₁).

The slope of AB is (5-0)/(1-(-3))=5/4

The slope of BC is (10-5)/(-3-1)=-5/4

The slope of CD is (5-10)/(-7-(-3))=5/4

The slope of AD is (5-0)/(-7-(-3))=-5/4

The number of vertices of the quadrilateral is 4.

Thus it is either a square or rectangle or rhombus or parallelogram.

Since the length of all sides is equal thus it is either a square or rhombus.

Since the diagonals are not equal it is a rhombus.

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answer is 25

use the formula to get the rest of the a's