HELP ASAP PLEASE
i have no clue what to do someone please help me​

20% of 75 is 15

75 - 16 = 60

he paid $60 for the shirt

please give brainliest

Answer: 28 inches

Step-by-step explanation:

Since their areas are the same their perimeter would be the same too. So plug 8 in for the length, for the formula of perimeter( 2(L+W) ) which would be 2(8+6) and you get 28

Answer:

y = -x+5

Step-by-step explanation:

m = (-1-4)/(6-1) = -1

y = -x + b

4 = -1 +b, so b=5

equation is y=-x+5

the given expression is'

y = 13x - 5

compare this equation with the standard equation

y = mx + c

here m is slope

so m = 13

thus, the slope of the equation is m = 13

Answer:

8

Step-by-step explanation:

Answer:8

Step-by-step explanation: you are trying to find how many you can wash in one hour so you take the number that can be washes in 2 hours and divide it by 2

16/2=8

Answer: 4

Step-by-step explanation:

Sides opposite congruent angles in a triangle are congruent, so:

So, MN = 1 + 3 = 4

Explanation:

We simplify the square root of 64 to get 8

\(\sqrt{64} = \sqrt{8^2} = 8\)

Then we'll have the plus minus out front to say

\(x = \pm \sqrt{64} = \pm 8\)

That breaks down into x = 8 or x = -8

As a check

x^2 = (8)^2 = 8*8 = 64

x^2 = (-8)^2 = (-8)*(-8) = 64

Both values lead to 64 when squaring.

Answer:

Step-by-step explanation:

Each tick is 0.1

So for example:

2.8 would be the eighth tick between 2 and 3.

-0.9 would be between 0 and -1 and will be the ninth tick.

When performing a hypothesis test on the population mean (μ) when the population standard deviation (σ) is known, the null hypothesis (H0) can never be rejected if the sample mean falls within the acceptance range determined by the chosen significance level and the critical values.

In hypothesis testing for the population mean when the population standard deviation is known, the null hypothesis (H0) represents the claim or assumption that the population mean is equal to a specific value. The alternative hypothesis (Ha) states that the population mean is not equal to the specific value.

To determine whether to reject or fail to reject the null hypothesis, we compare the sample mean to the expected value under the null hypothesis. If the sample mean falls within the acceptance range determined by the chosen significance level and the critical values, we do not have sufficient evidence to reject the null hypothesis. The acceptance range is defined by the margin of error around the expected value, and it indicates the range of values that can be considered reasonably close to the expected value.

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Answer:

6x-21

Step-by-step explanation:

3*2x = 6x

3*-7 = -21

6x-21

Both means are approximately equal at 1% level of significance.

What is significance level?

A finding has statistical significance in statistical hypothesis testing when it is highly unlikely to have happened given the null hypothesis.

H0: Mean of mean = mean of women

Ha: means of men < mean of women

(Left tailed test)

Since population std deviation is known but sample sizes are small t test is used.

The mean of Men minus Women equals -5.00

standard error of difference = 2.201

t = 2.2721

df = 53

p value= 0.0136

since p >0.01 at 1% significance level we fail to reject H0.

Both means are approximately equal at 1% level of significance.

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The matrix must have pivot columns. Otherwise, the equation Ax = 0 would have a free variable, in which case the columns of A would not span R5. Therefore, the correct answer is C.

A pivot column is a column of the matrix that has a non-zero entry in the pivot position and all entries below the pivot are zero. In row echelon form, every row below a pivot column has a zero in the corresponding position. The pivot columns correspond to the linearly independent columns of the original matrix and the number of pivot columns determines the rank of the matrix.

The rank of a matrix is defined as the number of linearly independent columns or rows in the matrix. If the columns of a matrix span Rn, then the rank of the matrix must be equal to n. This means that the matrix must have n linearly independent columns. To ensure that the columns of A span R5, A must have at least 5 pivot columns. If A had fewer pivot columns, then the equation Ax = 0 would have a non-trivial solution, meaning that the columns of A would not be linearly independent and would not span R5.

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The description of the transformation of z on the complex plane that gives the product of and is to scale by a factor of 4, then rotate counterclockwise by /6 radians.

To understand this transformation, let's break it down into its components. Scaling by a factor of 4 means multiplying by 4. This scales the magnitude of by a factor of 4 but does not change its direction. Next, rotating counterclockwise by /6 radians means rotating around the origin by an angle of /6 in the counterclockwise direction. By performing these two transformations in succession, we first scale by a factor of 4, which stretches or compresses it depending on whether it is inside or outside the unit circle, respectively. Then, we rotate counterclockwise by /6 radians, which changes its angle in the counterclockwise direction by /6 radians.

The resulting transformation gives the product of and because scaling and rotation are commutative operations when applied to complex numbers. The order in which the transformations are performed does not affect the result. Therefore, scaling by a factor of 4, then rotating it counterclockwise by /6 radians, will yield the same result as scaling by a factor of 4, then rotating it counterclockwise by /6 radians.

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Answer:

4a) 9n - 3

4b) n = 11

Step-by-step explanation:

3(3n - 1)

9n - 3

9n - 3 = 96

9n - 3 + 3 = 96 + 3

9n = 99

9n ÷ 9 = 99 ÷ 9

n = 11

The equation y = –117.5 x + 31,379.9 gives the population y of a city in x years after 1975 , in real world ,

Rate of Change means The city’s population decreases by about 118 people each year , and Y-intercept means  In 1975, the city’s population was about 31,380 people.

In the question ,

the equation that gives the population y of a city in x years is

y = –117.5 x + 31,379.9

let us find the population for 1976

So , x = 1 ,

we get , y = –117.5(1) + 31,379.9

y = –117.5 + 31,379.9

y = 31262.4

So, the population in the year 1976 is 31262.4

change in population = population in 1976 - population in 1975

= 31262.4 - 31,379.9

= -117.5

≈ -118

to find the population in the year 1977

x = 2 ,

we get , y = –117.5(2) + 31,379.9

= –235 + 31,379.9

= 31144.9

change in population = population in 1977 - population in 1976

= 31144.9 - 31262.4

= -117.5

≈ -118

From above , we can see that the population is decreasing in the year 1976 and 1977 , by  118 people,

hence , we can say that , the city’s population decreases by about 118 people each year

For population in 1975 , we put x=0 ,

So , y = –117.5(0) + 31,379.9

= 31379.9

≈ 31380

Therefore , the equation y = –117.5 x + 31,379.9 gives the population y of a city in x years after 1975 , in real world ,

Rate of Change means The city’s population decreases by about 118 people each year , and Y-intercept means  In 1975, the city’s population was about 31,380 people .

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1. If a triangle represents one-sixth, then a rhombus is 1/3.

2. If a hexagon represents 2, then a trapezoid is 1/3.

3. If a trapezoid + a triangle = 1, then a rhombus is 1/2

4. If a rhombus + a triangle = 1, then a hexagon is 3.

5. If a hexagon represents 2, then a rhombus is 1.

1. If a triangle represents one-sixth, then a rhombus is 1/3. This is because a rhombus has twice the number of triangles as a triangle, so a rhombus represents two-sixths, which simplifies to 1/3.

2. If a hexagon represents 2, then a trapezoid is 1/3. This is because a hexagon has three pairs of parallel sides, and a trapezoid is a four-sided figure with one pair of parallel sides. Therefore, a trapezoid has half the number of parallel sides as a hexagon, so it represents half of 2, which is 1, and when divided by its number of sides, we get 1/3.

3. If a trapezoid + a triangle = 1, then a rhombus is 1/2. This is because a rhombus can be divided into two triangles, so a rhombus represents two-sixths, which simplifies to 1/3. Therefore, a trapezoid represents 1 - 1/3 = 2/3. Since a rhombus has twice the number of sides as a trapezoid, a rhombus represents twice 2/3, which is 4/3, and simplifies to 1/2.

4. If a rhombus + a triangle = 1, then a hexagon is 3. This is because a rhombus can be divided into two triangles, so a rhombus represents two-sixths, which simplifies to 1/3. Therefore, a triangle represents 1 - 1/3 = 2/3. Since a hexagon has six sides, a hexagon represents six times 2/3, which is 4.

5. If a hexagon represents 2, then a rhombus is 1. This is because a rhombus can be divided into two congruent triangles, so a rhombus represents twice the area of a triangle. Since a hexagon can be divided into six triangles, a hexagon represents six times the area of a triangle, which is 2. Therefore, a rhombus represents 2 divided by 6, which simplifies to 1/3. However, since a rhombus has twice the number of sides as a triangle, a rhombus represents twice 1/3, which is 2/3, and simplifies to 1.

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Answer:

1.5(2x5)

Step-by-step explanation:

just swap the things in the parenthases

could u vote me brainliest plz? thx :)

Answer:

t= -1

Step-by-step explanation:

\(\boxed{ slope = \frac{y _{1} - y_2 }{x_1 - x_2} }\)

where (x₁, y₁) is the first coordinate and (x₂, y₂) is the second coordinate

\( \frac{1}{7} = \frac{ - 7 - ( - 6)}{t - 6} \)

\( \frac{1}{7} = \frac{ - 7 + 6}{t - 6} \)

\( \frac{1}{7} = \frac{ - 1}{t - 6} \)

cross multiply:

1(t -6)= 7(-1)

t -6= -7

+6 on both sides:

t= -7 +6

t= -1

Answer:

19.8

Step-by-step explanation:

The value of x in the triangle is 17.

The exterior angle theorem states that the measure of an exterior angle is equal to the sum of the measures of the two remote interior angles of the triangle.

Using the exterior angle theorem, we can find the value of x in the triangle as follows:

m∠BHY = (2x + 7)°

m∠HBY = (8x - 18)°

m∠NYB = (4x + 91)°

Therefore,

2x + 7 + 8x - 18 = 4x + 91

10x - 11 = 4x + 91

10x - 4x = 91 + 11

6x = 102

divide both sides by 6

x = 102 / 6

x = 17

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Answer:

-1

Step-by-step explanation:

substitute x for 6 and y for 1

which will be 6-1+6

using BODMAS

6-(1+6)

6-7= -1

Answer:

x = 44

Step-by-step explanation:

4+4+2x+2x= 96

-(add like terms)

8+4x=96

-(subtract 8 from both sides)

4x=88

-(divide by 4 on both sides to get you x alone)

x=44

Answer:

x = 8

Step-by-step explanation:

2 x+ 4

2 x 4 = 8

8 ÷ 2 = 4

Answer:

x = 8

Failing to reject the null hypothesis for interaction terms in a statistical model suggests no significant interaction effect. It may show a straight lines in the graph.

If you fail to reject the null hypothesis when testing the interaction terms in a statistical model, it indicates that there is no significant evidence to suggest the presence of an interaction effect. In such a case, the line(s) representing the model would typically be assumed to be straight. This assumption implies that the relationship between the variables is additive rather than multiplicative.
However, it’s important to note that the absence of a significant interaction does not guarantee that the lines representing the model will be straight. The straightness or curvature of the lines depends on the specific form of the model and the relationships between the variables, other than the interaction terms. Therefore, without further information about the specific model and variables, we cannot definitively determine whether the lines will be curved or straight based solely on the failure to reject the null hypothesis for the interaction terms.

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The volume of the pyramid is approximately 5.9 cm³.

To find the volume of a pyramid with a square base, you can use the formula:

Volume = (1/3) * base area * height

First, let's find the area of the square base. The perimeter of the base is given as 5.7 cm, which means each side of the square has a length of 5.7 cm / 4 = 1.425 cm.

The area of a square is given by the formula:

Area = side length * side length

Substituting the side length, we have:

Area = 1.425 cm * 1.425 cm = 2.030625 cm²

Now, we can calculate the volume of the pyramid:

Volume = (1/3) * base area * height

= (1/3) * 2.030625 cm² * 8.6 cm

= 5.91834375 cm³

Rounding to the nearest tenth of a cubic centimeter, the volume of the pyramid is approximately 5.9 cm³.

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The total snowfall is 12 inches. The area of the third rectangle is 1.5 x 2 = 3 inches. We can continue this process for the remaining rectangles, and when all the areas have been added together, we get a total snowfall of 12 inches.

To calculate the total snowfall, we need to calculate the area under the curve of the graph. We can do this by breaking the graph into rectangles and calculating the area of each, then adding them all together. For example, the area of the first rectangle is 0.5 x 2 = 1 inch. The area of the second rectangle is 1 x 2 = 2 inches. The area of the third rectangle is 1.5 x 2 = 3 inches.  The area of the third rectangle is 1.5 x 2 = 3 inches. We can continue this process for the remaining rectangles, and when all the areas have been added together, we get a total snowfall of 12 inches.

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Answer:

Answers: 12 cm.

Step-by-step explanation:

Diameter is equal to twice the radius.

Answer: 1 +(-7)

(The 2nd option)

Step-by-step explanation:

1+(-7) is what the first absolute value would turn into since everything in it turns to positive.