help please !!!!!!! if you can

Answer:

Danny does

Step-by-step explanation:

Compare the fraction of seconds, find their common denominator, then compare the nominators.

3/12, 4/12

Danny's fraction has the least nonimanator so Danny ate the fastest.

Answer:

\(\sf \bold{ 1 * (-3)^{n-1}}\)

Explanation:

first term, a₁ = 1

difference between the terms: -3

where "a₁ is first term" and "r refers to common difference"

Answer:

Step-by-step explanation:

Complementary Angles add up to 90°

90°-46°=44°

∠m = 44°

Answer:

A. step 1

Step-by-step explanation:

I think its A , because a negative plus a negative is a postive

Answer:

step 2 is the incorrect step

In the given regression equation, the slope of the line is - 1.23.

Regression equation:

in statistics, regression equation means the mathematical expression of the relationship between a dependent variable and one or more independent variables that results from conducting a regression analysis.

Given,

The average August temperatures (y) and geographic latitudes (x) of 12 cities in the United States were studied. The regression equation for these data is Temperature 90.4 -1.23*(latitude)

Here we need to the slope of the line.

While we looking into the given regression equation,

Temperature = 90.4 - 1.23x(latitude)

While we compare this one with the general slope of the line equation,

y = mx + c

where m refers the slope of the line.

Then we get the value of slope as -1.23.

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Answer:

70

Step-by-step explanation:

Evaluate 3 b^2 - b where b = 5:

3 b^2 - b = 3×5^2 - 5

Hint: | Evaluate 5^2.

5^2 = 25:

3×25 - 5

Hint: | Multiply 3 and 25 together.

3×25 = 75:

75 - 5

Hint: | Subtract 5 from 75.

| 7 | 5

- | | 5

| 7 | 0:

Answer:  70

The length of the rivet should be 3/8 inch to pass through the two sheets of metal.

We must take into account the shank length as well as the thickness of the two metal sheets.

Assumed:

The thickness of the two metal sheets and the shank length must be added to determine the overall length of the rivet:

Total length = 2 * (Thickness of sheet metal) + Shank length

Substituting the values:

Total length = 2 * (1/16 inch) + 1/4 inch

Calculating the values:

Total length = 1/8 inch + 1/4 inch

Total length = 1/8 inch + 2/8 inch

Total length = 3/8 inch

So, the length of the rivet should be 3/8 inch to pass through the two sheets of metal.

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The perimeter of the rectangle is 13x+7 feet

The formula for area is equal to the product of the length and breadth of the rectangle. Whereas when we speak about the perimeter of a rectangle, it is equal to the sum of all its four sides.

Given here: The width of a rectangle is 5x-1.5 feet and the length is 1.5x+5 feet. Therefore the perimeter of the rectangle is given by

= 2(5x-1.5+1.5x+5)

=2(6.5x+3.5)

= 13x+7

Hence, The perimeter of the rectangle is 13x+7 feet

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Answer:

B

Step-by-step explanation:

x² we start with this function

x²-3 moves the vertex down 3 units

(3/5) x² -3 make the parabola a bit more wide because 3/5 is between 0 and 1

Answer:

100°

Step-by-step explanation:

is 25% of the circle

Answer:

BC = 100°

Step-by-step explanation:

The chord- chord angle BDC is half the sum of the arcs intercepted by the angle and its vertical angle, that is

\(\frac{1}{2}\) ( BC + AE) = 85° ( multiply both sides by 2 to clear the fraction )

BC + AE = 170°

BC + 70° = 170° ( subtract 70° from both sides )

BC = 100°

Answer:

Luis wrote an incorrect expression.

Step-by-step explanation:

As per Terrell, the correct expression is (2x+2x) + (5x+5x) + (1+1) which is equal to 12x + 2

For you who got incorrect answer, the answer if you simplified it must be 12x + 2. Let's check:

Anya     2x+2x+5x+1+5x+1 =

            12x + 2 [CORRECT]

Katrin    2(5x+1) + 2x

             10x+2+2x

             12x + 2 [CORRECT]

Luis       2(2x) + 2(5x+1)

             4x+10x+2

             14x + 2 [INCORRECT]

Steve     1+1+ x(2+2+5+5)

              2+ x(12)

             12x + 2 [CORRECT]

Step-by-step explanation:

We can use trigonometry to solve this problem. Let's draw a diagram:

```

A - observer (1.5 m above ground)

B - base of the clock tower

C - top of the clock tower

D - intersection of AB and the horizontal ground

E - point on the ground directly below C

C

|

|

|

|

| x

|

|

|

-------------

|

|

|

|

|

|

|

|

|

B

|

|

|

|

|

|

|

|

|

|

|

A

```

We want to find the height of the clock tower, which is CE. We have the angle of elevation ACD, which is 19 degrees, and the distance AB, which is 100 m. We can use tangent to find CE:

tan(ACD) = CE / AB

tan(19) = CE / 100

CE = 100 * tan(19)

CE ≈ 34.5 m (rounded to 1 decimal place)

Therefore, the height of the clock tower is approximately 34.5 m.

Answer:

27mph

Step-by-step explanation:

Let's assume the speed of the first car is x mph. Since the second car is traveling 6 mph slower, its speed would be (x - 6) mph.

To find out how far each car has traveled, we can use the formula: distance = speed × time.

For the first car:

Distance traveled by the first car = speed of the first car × time

d₁ = x mph × (4 hours + 20 minutes)

Since we need to work with a single unit of time, let's convert 20 minutes to hours:

20 minutes = 20/60 = 1/3 hours

Substituting the values:

d₁ = x mph × (4 + 1/3) hours

d₁ = x mph × (13/3) hours

d₁ = (13x/3) miles

For the second car:

Distance traveled by the second car = speed of the second car × time

d₂ = (x - 6) mph × (4 hours + 20 minutes)

d₂ = (x - 6) mph × (13/3) hours

d₂ = (13/3)(x - 6) miles

Since they are traveling in opposite directions, the sum of their distances is equal to the total distance between them:

d₁ + d₂ = 260 miles

Substituting the expressions for d₁ and d₂:

(13x/3) + (13/3)(x - 6) = 260

To simplify the equation, let's multiply both sides by 3 to get rid of the denominators:

13x + 13(x - 6) = 780

13x + 13x - 78 = 780

26x - 78 = 780

26x = 780 + 78

26x = 858

x = 858/26

x ≈ 33

The speed of the first car is approximately 33 mph. Substituting this value back into the equation for the speed of the second car:

Speed of the second car = x - 6 ≈ 33 - 6 ≈ 27 mph

Therefore, the first car is traveling at approximately 33 mph, and the second car is traveling at approximately 27 mph.

The total number of social security numbers that are possible are 900,000,000.

In the social security number first digit can only fall between 1 and 9, leaving us only nine options because the first three digits cannot all be zeros. There are still 10 possibilities for each of the second and third digits because they may both still be any integer between 0 and 9.

Therefore, the total number of different social security numbers that can be formed is using the combinations,

= 9 × 10⁸

= 900,000,000

So, there are 900,000,000 different possible social security numbers.

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Answer: B.

Step-by-step explanation:

The correct option is (c).

(A) We know that sum of the interior angles of a triangle is equal to 180°.

m∠a + m∠b + m∠c = 180° (all three are interior angles)

(B) If the sum of two angles is 180°, that angle is called a supplementary angle. In other words, when two angles add to form a straight line, they are called supplementary angles.

m∠d + m∠c = 180° (both are in a straight line making an angle)

(C) Transitive properties help establish a connection by stating that if a = b and b = c, then a = c.

m∠a + m∠b + m∠c = 180°

m∠d + m∠c = 180°

Therefore, this property

We can say,

m∠a + m∠b + m∠c = m∠d + m∠c    

(D) Subtraction equality properties: Subtraction equality properties indicate that subtracting or removing an equal value from two equal elements results in a new equal quantity.

The formula for this is if a = b, then a-c = b-c

In the question,

m∠a + m∠b = m∠d

Both ∠a and ∠b are two interior angles and the exterior angle is ∠d.

According to the exterior angle property of a triangle theorem, the sum of two opposite interior angles is equal to exterior angles.

Hence, this is also correct.

Therefore, the correct option is (c) which has the correct steps and reasons for the given question.

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The way that the number 4117 × 10⁻²⁹ can be shown on a calculator is; 4117 × 10⁻³²

The standard form of a number is a way of writing the number in a form that follows certain rules.

Now, we can also write a number in scientific notation but then a calculator usually writes these types of number with exponent powers in standard form.

For example there is usually no decimal in standard form but instead whole numbers. Thus;

4.117 × 10⁻²⁹ when expressed again can be written as;

4117 × 10⁻²⁹ × 10⁻³ = 4117 × 10⁻³²

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The Civil War was fought between the North and the South, and it was the bloodiest conflict in American history. The Civil War ended in 1865 with the defeat of the South and the reunification of the country.

The election of 1860 saw the defeat of the nationalistic candidate Stephen A. Douglas, which demonstrated the division of the country, and this led to the breakdown of the Union in 1861. The election of 1860 demonstrated the deep political, social, and economic divisions that had existed in the country since the time of the founding fathers and how these divisions could lead to the collapse of the government itself.The election of 1860 saw the defeat of the nationalistic candidate Stephen A. Douglas, who was defeated by Abraham Lincoln, who was the candidate of the Republican Party. The election of 1860 was the first in which the Democratic Party had split into two, and as a result, the party was unable to present a united front. The election also saw the rise of the Republican Party, which was a party that was strongly opposed to the extension of slavery into the western territories. The Republican Party had been formed in 1854, in opposition to the Kansas-Nebraska Act, which had allowed the people in the western territories to decide for themselves whether or not to allow slavery. The Republican Party had quickly become the party of the North, and the party's platform was focused on protecting the interests of the North, and opposing the interests of the South.The election of 1860 demonstrated how the country was deeply divided, and how this division could lead to the breakdown of the government itself. The election was followed by a series of events that led to the secession of the southern states, and the subsequent Civil War. The Civil War was fought between the North and the South, and it was the bloodiest conflict in American history. The Civil War ended in 1865 with the defeat of the South and the reunification of the country.

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Answer:

Yes

Step-by-step explanation:

Math, due tomorrow and i can't find the rate of enlargement of my dilation in transformation....

The ratio of corresponding sides for the given similar triangles is 2/5.

In the given options, the ratio of corresponding sides is provided for each set of similar triangles. Let's analyze each option to determine the correct ratio:

a. 10

This option only provides a single number and does not specify the ratio of corresponding sides. Therefore, it is not the correct answer.

b. 4/5

This option provides the ratio 4/5 for the corresponding sides of the similar triangles. However, the ratio can be simplified further.

To simplify the ratio, we divide both the numerator and denominator by their greatest common divisor (GCD). In this case, the GCD of 4 and 5 is 1.

Dividing 4 and 5 by 1, we get:

4 ÷ 1 = 4

5 ÷ 1 = 5

Therefore, the simplified ratio is 4/5.

c. 10/85

This option provides the ratio 10/85 for the corresponding sides of the similar triangles. However, this ratio cannot be simplified further, as 10 and 85 do not have a common factor other than 1.

Therefore, the correct ratio of corresponding sides for the given similar triangles is 2/5, as determined in option b.

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The situation in which it is safe to employ t-procedures is described by option (c) where both samples are approximately normal.

option (c) is identified as the situation where it is safe to use t-procedures.

t-procedures are appropriate when certain assumptions are met, including the assumption of normality of the population or sample distributions. Option (c) states that both samples are approximately normal, which fulfills this requirement. This means that the data in both samples have a symmetric bell-shaped distribution, allowing t-procedures to be used for hypothesis testing or confidence interval estimation.

Options (a), (b), and (d) describe scenarios where either one or both samples are moderately skewed or contain outliers, which violates the assumption of normality. Skewness and outliers can impact the validity of t-procedures, making them less reliable. Therefore, these options do not fulfill the requirement for safely employing t-procedures.

Option (e) states that it is safe to use t-procedures in more than one of the situations above. However, based on the analysis provided, only option (c) meets the criteria of having both samples approximately normal, making it the only situation where t-procedures can be safely employed.

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The resulting matrix of the row operation is given as follows:

\(R = \left[\begin{array}{ccc}7&4.5&-6\\-6&-3&12\end{array}\right]\)

We apply the row operation on the original matrix, given as follows:

\(A = \left[\begin{array}{ccc}4&3&0\\-6&-3&12\end{array}\right]\)

The operation is given by:

\(R_1 = R_1 - 0.5R_2\)

That is, applying to each element, we have that:

Hence the resulting matrix is:

\(R = \left[\begin{array}{ccc}7&4.5&-6\\-6&-3&12\end{array}\right]\)

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Answer:

a variable is a numeric value typically represented by a letter

Step-by-step explanation:

The probbaility that the sample conatins at least one green ball is 0.90.

Let E be the event that denotes that the sample conatins at least one green.

According to the given question.

Total number of balls in an urn = 11 + 5 = 16

Total number of white balls = 11

Total number so green balls = 5

Now, the number of ways of selecting 7 balls from 16 balls

= \(^{16} C_{7}\)

= 16!/(7!9!)

= 11440

And the total number of ways of selecting 7 balls which contain atleast on green ball = \(^{11} C_{6} \times \ ^{5} C_{1} + ^{11} C_{5} \times \ ^{5} C_{2} + ^{11} C_{4} \times \ ^{5} C_{3} +^{11} C_{3} \times \ ^{4} C_{4}+^{11} C_{2} \times \ ^{5} C_{5}\)

= \(\frac{11!}{6!5!} \times \frac{5!}{1!4!} +\frac{5!}{2!3!} \times\frac{11!}{5!6!} +\frac{11!}{7!4!} \times\frac{5!}{3!2!} +\frac{11!}{8!3!} \times\frac{4!}{4!0!} +\frac{11!}{9!2!} \times\frac{5!}{0!5!}\)

= 452 × 5 + 10 × 452 + 330 × 10 + 165×1 + 55 ×1

= 2260 +  4520 +3300 + 165 + 55

= 10300

Thereofore, the probability that the sample conatins at least one green ball is given by

P(E) = (total number of ways of selecting 7 balls which contain atleast on green ball) / (the number of ways of selecting 7 balls from 16 balls )

⇒ P(E) = 10300/11440

⇒ P(E) = 0.90

Hence, the probbaility that the sample conatins at least one green ball is 0.90.

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Answer:

60 hours

Step-by-step explanation:

simple,multiply 7.50 and 60 =450 plus 150 =600

The evaluation of the triple integral over the region E, bounded by the paraboloid z = 4 - x^2 - y^2 and the plane z = 3, is equal to 16π/3.

To evaluate the triple integral, we can use the cylindrical coordinate system. In this coordinate system, the paraboloid can be expressed as z = 4 - r^2, where r represents the radial distance in the xy-plane.

The region E is bounded below by the paraboloid z = 4 - r^2 and above by the plane z = 3. This means that the z-coordinate ranges from 3 to 4 - r^2. The radial distance r ranges from 0 to the value that satisfies 4 - r^2 = 3, which is r = 1.

The angular coordinate θ can range from 0 to 2π since we want to cover the entire region in the xy-plane.

The integral setup for the triple integral is ∫∫∫ E dz dr dθ, where the limits of integration are: z from 3 to 4 - r^2, r from 0 to 1, and θ from 0 to 2π.

Evaluating the integral leads to the result of 16π/3.

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The general form of such a model that predicts the volume of sales (Y) as a function of advertising (X) in which sales increase as advertising increases, but at a decreasing rate is given by  Y^ = b0 + b1X + b2X². Option C.

The general form of the model that fits the description of the sales model that is given in the problem is C. Y^ = b0 + b1X + b2X². Where Y^ represents the predicted or estimated value of Y. b0, b1, and b2 are the coefficients of the model, and they represent the intercept, the slope, and the curvature of the relationship between X and Y, respectively.

In this model, the variable X has a quadratic relationship with the variable Y because of the presence of the squared term X². This indicates that the effect of X on Y is not linear but curvilinear, which means that the effect of X on Y changes as X increases. Specifically, the effect of X on Y increases initially but then levels off or diminishes as X becomes larger. Answer option C.

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A. domain {-∞, ∞}

B. (-∞, -i/√3) U (-i/√3, i/√3) U (i/√3, ∞)

A. The domain of f, g, f/g, and g/f is all real numbers, so the domain is {-∞, ∞}.

B. Range (-∞, -i/√3) U (-i/√3, i/√3) U (i/√3, ∞)

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The absolute value is:

Work/explanation:

First, we will evaluate 2-7.

It evaluates to -5.

Now, let's find the absolute value of -5 by using these rules:

\(\sf{\mid a\mid=a}\)

\(\sf{\mid-a \mid=a}\)

Similarly, the absolute value of -5 is:

\(\sf{\mid-5\mid=5}\)