Question 6(Multiple Choice Worth 2 points)
(Two-Column Tables MC)

The table below shows the ratios of black to white keys on pianos of various sizes.


Black A 18 45 72
White 13 B 65 C


Determine which table has the correct values for A, B, and C.

The value of k that will make the quadratic equation kx² - 4x + 1 = 0 to have two equal roots is; k = 4

The general form of representing a quadratic equation is;

ax² + bx + c = 0

Now, we are given the quadratic equation which is;

kx² - 4x + 1 = 0

Now, for a quadratic equation to have 2 equal roots, it means that;

b²  = 4ac

Thus, applying that to our given quadratic equation gives us;

(-4)² = 4(k * 1)

4k = 16

k = 4

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Answer:

(-2,3)

Step-by-step explanation:

I couldn't read which answer it is

Answer:

theres no picture...or points...

Step-by-step explanation:

Answer:

A.

Step-by-step explanation:

The answer for the first one is 4.47945205479, if you need to round that would be 4.5.

The answer for the second one is 20.4945454545, rounding will be 20.5.

The answer for the last one is 893.84, rounding will be 893.8.

If you need to round just remember 4 or less, will be rounded to 0, and 5 or more would be rounded to 10.

Answer:

-10<0

Step-by-step explanation:

The quotient of the division problem is (x + 1)/(x +2). The result is obtained by determining the factors of the two quadratic equations.

The quadratic equation can be expressed as

ax² + bx + c = 0

Where c is a constant.

To find the factors of a quadratic equation, follow these steps!

Find the quotient of (x² + 2x + 1)/(x² + 3x + 2) = 0!

For quadratic equation x² + 2x + 1:

The common factors: (x + 1)(x + 1)

For quadratic equation x² + 3x + 2:

The common factors: (x + 2)(x + 1)

The quotient of the quadratic equations is

(x² + 2x + 1)/(x² + 3x + 2) = 0

(x + 1)(x + 1)/(x + 2)(x + 1) = 0

(x + 1)/(x + 2) = 0

Hence, the quotient of the quadratic equations is (x + 1)/(x + 2) = 0.

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The best estimate of the system solution to the nearest integer values is (2,3).

The coordinates represent the location of a point in the 2D coordinate plane with respect to the origin. A point's x-coordinate is its perpendicular distance from the y-axis as measured along the x-axis. A point's y-coordinate is the perpendicular distance from the x-axis measured along the y-axis. A point's Cartesian coordinates (also known as rectangular coordinates) are a pair of integers (in two dimensions) or a triplet of numbers (in three dimensions) indicating signed distances from the coordinate axis. A point's coordinates are a pair of integers that define its precise location on a two-dimensional plane. Remember that the coordinate plane contains two axes that are perpendicular to each other, known as the x and y axes.

Here,

This question is asking us what the coordinates are for the point of intersection. Since the point is not directly on the grid lines, we must approximate.

The point is closest to the value "2" on the x axis.

The point is closest to the value "3" on the y axis.

This means the correct point is (2,3).

The best approximation of the solution to the system to the nearest integer values is (2,3).

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Answer: They are perpendicular.

Step-by-step explanation:

If you graoh x+8y=-1 it gives you a negative slope line, and if you graph -8x+y=-1 you get a positive line, eventho it almost looks like it is undefined.

I hop ethis helped.

M < 7 / 12

(1) < 7 / 12

(1) < 0.583333333 (false statement)

(-1) < 7 / 12

(-1) < 0.583333333 (true statement)

(-9) < 7 / 12

(-9) < 0.583333333 (true statement)

(-5) < 7 / 12

(-5) < 0.583333333 (true statement)

B C D maybe?

Answer:

15 is the diameter and 7.5 is the radius

Step-by-step explanation:

The radius is the half of the diameter hehe boi

Answer:

44 mm<5 in

22 gal>55 L

Step-by-step explanation:

in to mm multiply by 25.4

5in=127mm

44 mm\(<\)5 in

gal to L multiply by  3.785

22gal=83.3

22 gal>55 L

Answer:

20

Step-by-step explanation:

All I did was add 15 and 5 which equals 20 which is the correct answer

A simultaneous equation refers to two or more equations that are solved at the same time.

A simultaneous equation refers to two or more equations that are solved at the same time. Now we shall solve each of the equations;

a. 2x + y = 3 ------(1)

   x - y = 4 ------ (2)

x = 4 + y  ----- (3)

Substituting (3) into (1)

2(4 + y) + y = 3

8 + 2y + y = 3

8 + 3y = 3

3y = 3 - 8

3y = -5

y = -5/3

Hence;

 x - y = 4

x - (-5/3) = 4

x = 4 + 5/3

x = 17/3

b. 2x + 6y =9 -----(1)

x + 3y = 2 ------ (2)

x = 2 - 3y ------ (3)

Substitute (3) into (1)

2( 2 - 3y)  + 6y =9

4 - 6y + 6y = 9 (From this stage we can see that it is not possible to solve the quadratic)

c. 6x - 3y = 12 -----(1)

4x + 2y = 10 ---- (2)

12x - 6y = 24 ---- (3)

12x + 6y = 30 --- (4)

Add (3) to (4)

24x = 54

x= 54/24 = 9/4

Hence;

4(9/4) + 2y = 10

9 + 2y = 10

2y = 10 - 9

y = 1/2

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Answer:

3 series I believe

Step-by-step explanation:

7-4=3 this is what I got I believe it's right

The Mean Value Theorem states that for a function f(x) that is continuous on the closed interval [a,b] and differentiable on the open interval (a,b), there exists at least one number c in the interval (a,b) such that f'(c) = (f(b) - f(a))/(b - a).
For the given function v = sin(w) on the interval (1,5), we have f(a) = sin(1) and f(b) = sin(5).

Taking the derivative of v = sin(w), we get f'(w) = cos(w).
Using the Mean Value Theorem, we have:
f'(c) = (f(5) - f(1))/(5 - 1)
cos(c) = (sin(5) - sin(1))/4
Solving for c, we get:
c = arccos((sin(5) - sin(1))/4) or c = 2π - arccos((sin(5) - sin(1))/4)
Therefore, the values of c in the conclusion of the Mean Value Theorem for the given function v = sin(w) on the interval (1,5) are:
c = arccos((sin(5) - sin(1))/4), c = 2π - arccos((sin(5) - sin(1))/4)
Note: These values are approximate and may vary depending on the unit of measurement used.

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To test the hypothesis that the mean weight of two sheets is equal (μ1 - μ2) against the alternative that it is not, and assuming equal variances, we can use a two-sample t-test. The t-statistic can be calculated using the following formula:

t = (x1 - x2) / (s_p * sqrt(1/n1 + 1/n2))

where:

x1 and x2 are the sample means of the two sheets,

s_p is the pooled standard deviation,

n1 and n2 are the sample sizes.

The pooled standard deviation (s_p) can be calculated using the following formula:

s_p = sqrt(((n1 - 1) * s1^2 + (n2 - 1) * s2^2) / (n1 + n2 - 2))

where:

s1 and s2 are the sample standard deviations.

To calculate the t-statistic, we need the sample means, sample standard deviations, and sample sizes.

Once you provide the specific values for these variables, I can assist you in calculating the t-statistic to 3 decimal places.

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To test the hypothesis that the mean weight of the two sheets is equal (μ1 - μ2) against the alternative that it is not, we can use a paired t-test assuming equal variances. The paired t-test is used when we have paired data or measurements on the same subjects or objects.

The t-statistic for a paired t-test is calculated as follows:

t = (X1 - X2) / (s / √n)

where X1 and X2 are the sample means of the two samples, s is the pooled standard deviation, and n is the number of pairs.

Please provide the sample means, standard deviation, and sample size for each sheet so that we can calculate the t-statistic to 3 decimal places.

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Stars to Circles Ratio: 4 to 3

Circles to Stars Ratio: 3 to 4

Answer:

4to 3

Step-by-step explanation:

because I'm smart an I've all ready learned about this I'm 100% for sure

Answer:

A

Step-by-step explanation:

Answer:

im assuming slope : 5/4 is slope

Step-by-step explanation:

the formula (y₂ - y₁) / (x₂ - x₁) is how you get slope. plug stuff in and you get (9 - 4) / (8 - 4) and thats 5/4

Answer:

y=1.25x-1

Step-by-step explanation:

Hope this helps! PS I'm not assuming anything

A 60 purchases in a single day would represent the 92.7th percentile.

To answer this question, we need to calculate the average number of purchases per day and the standard deviation of the number of purchases per day. Then, we can use the normal distribution to determine the percentile that represents 60 purchases in a single day.

1. Average number of purchases per day:
Since 10% of potential customers buy a product, out of 500 visitors, 10% will be 500 * 0.10 = 50 purchases.

2. Standard deviation of the number of purchases per day:
To calculate the standard deviation, we need to find the variance first. The variance is equal to the average number of purchases per day, which is 50. So, the standard deviation is the square root of the variance, which is sqrt(50) = 7.07.

3. Percentile of 60 purchases in a single day:
We can use the normal distribution to calculate the percentile. We'll use the Z-score formula, which is (X - mean) / standard deviation, where X is the number of purchases in a single day. In this case, X = 60.

Z-score = (60 - 50) / 7.07 = 1.41

Using a Z-score table or calculator, we can find that the percentile associated with a Z-score of 1.41 is approximately 92.7%. Therefore, 60 purchases in a single day would represent the 92.7th percentile.

In conclusion, 60 purchases in a single day would represent the 92.7th percentile.

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Answer:

Step-by-step explanation:

ratio and proportion:

3 tickets  = 7 tickets

$13.20            x

then cross multiply:  3 (x) = 13.20 (7)

simplify: 3x = 92.4

solve for x = 92.4 / 3

x = $ 30.8

therefore,

7 tickets costs $ 30.8

Since the mean and the standard deviations are "sensible" to outliers, that is, t

Answer: The answer is -34 3/16

Step-by-step explanation:

−51/2 + 63/4(−41/4)

=−51/2 + −2583/16

= −2991/16

= -34 3/16

The surface area of the cone is calculated to the nearest tenth as: 173.4 cm².

Surface area of a cone = πr(r + l),

Given the following:

Plug in the values

Surface area of the cone = π × 4(4 + 9.8)

Surface area of the cone = 173.4 cm²

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We can calculate the perimeter of the rectangular yard to find out how much fence Joshua needs:

since the perimeter of the yard is 264 yards, then Joshua does not have enough fence for his yard, since he only has 245 t of fence, and he needs 264ft

Answer:

NI and HN

Step-by-step explanation:

They are marked congruent by the small lines in the middle of each segment, indicating marks for congruency.

1st and 2nd pictures are for finding area and 3rd picture is for finding perimeter

hope you understood well and if not and you can ask again

Triangle pairs are similar polygons if they have the same shape but not necessarily the same size. In order for two triangles to be similar, they must satisfy the following conditions:

They must have the same angles. This means that the measures of the angles in one triangle must be the same as the measures of the corresponding angles in the other triangle.

The lengths of the sides must be in the same ratio. This means that if you divide the lengths of the corresponding sides of one triangle by the lengths of the corresponding sides of the other triangle, you must get the same ratio for all pairs of sides.

For example, if triangle ABC is similar to triangle DEF, the ratios of AB/DE, AC/DF, and BC/EF must all be the same.

To determine if two triangles are similar, you can use one of several theorems and postulates, such as the Side-Side-Side (SSS) Similarity Theorem, the Side-Angle-Side (SAS) Similarity Theorem, or the Angle-Angle (AA) Similarity Postulate. These theorems and postulates provide different sets of conditions that must be satisfied in order for two triangles to be similar.

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let x be the temperature. we get that: