SWIMMING POOLS The water level of a swimming pool is 3.3 feet and
changes at an average rate of -0.14 feet per day due to water evaporation.
What will the water level of the pool be after 4 days?

Answer:

13

Step-by-step explanation:

Answer:

ok so basically the points need to be graphed on a map and to do that you need to know the x and the y axis.x axis is horizontal and y is verticle.So look at -3,-5 the x is -3 and the y is -5 so you go left -3 and then down -5

Area = length x width

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

60 = x^2 + 3x -10

Subtract 60 from both sides:

x^2 +3x -70 = 0

Solve for x by finding 2 numbers when added together = 3 and when multiplied by each other = -70

x = -10 and 7

Since the sides have to be a positive number we need to use 7

The length = x+5 = 7+5 = 12 cm

The width = x-2 = 7-2 = 5 cm

Answer:

B. |3x - 6| + 17 > 15

C. |5x - 4| > -8

Step-by-step explanation:

The absolute value of a number is its positive numerical value.

To determine which absolute value inequalities have all real solutions, isolate the absolute value on one side of the equation.

Option A

|5x - 7| < -2

No solutions, as an absolute value cannot be less than zero.

Option B

   |3x - 6| + 17 > 15

⇒ |3x - 6| + 17 - 17 > 15 - 17

⇒ |3x - 6| > -2

True for all values of x, as an absolute value is always positive and therefore will always be greater than -2.

Option C

|5x - 4| > -8

True for all values of x, as an absolute value is always positive and therefore will always be greater than -8.

Option D

-2|3x - 5 | > 3

Divide both sides by -2 (remembering to flip the inequality sign):

⇒ |3x - 5| < -³/₂

No solutions, as an absolute value cannot be less than zero.

Answer:

B. |3x - 6| + 17 > 15

C. |5x - 4| > -8

Step-by-step explanation:

Answer:

1/2

Step-by-step explanation:

first find the least. common multiple of the denominators(LCM)

this is 18

18

divide each denominator with the lcm

then multiply the answers you get by the numerators...

e.g2/3. 18÷3×2=12. 1/6. 18/6x1 which is 3

then 12-3 which is 9 over the lcm which is 18

the. simplified form of the answer is

1/2

x = 4

I'm 100 % sure about it !

Answer:

Answer B

Step-by-step explanation:

Answer:

Total area of board = 36x² + 324 + 216x

Step-by-step explanation:

Given:

Side of square = x + 3

Total number of square = 6 x 6 = 36

Area of each square = Side x Side

Area of each square = (x + 3)²

Area of each square = x² + 9 + 6x

Total area of board = 36[Area of each square]

Total area of board = 36[x² + 9 + 6x]

Total area of board = 36x² + 324 + 216x

Answer:

4th one

Step-by-step explanation:

it is the 4th one

Answer:

see explanation

Step-by-step explanation:

(a)

Given y is directly proportional to x then the equation relating them is

y = kx ← k is the constant of proportion

To find k use the condition when x = 3, y = 18 , then

18 = 3k ( divide both sides by 3 )

6 = k

y = 6x ← equation of proportion

(b)

(i)

when x = 12 , then

y = 6 × 12 = 72

(ii)

when y = 42

42 = 6x ( divide both sides by 6 )

7 = x

Answer:

false, 216° turns 3/5 in a 360° rotation

Answer:

Option (2).

Step-by-step explanation:

In the figure attached,

PB is a tangent and m(arc VU)= 80°, m(arc ST) = 40°

By theorem of angle between intersecting secants,

"If two secants have been drawn to a circle from a point outside the circle, then the angle between the secants will measure the half of the difference of the intercepted arcs."

\((m\angle 1)=\frac{1}{2}(m\widehat{VU}-m\widehat{ST})\)

          \(=\frac{1}{2}(80-40)\)

          = 20°

Therefore, Option (2) will be the answer.

Answer:

the first one for sure.

Step-by-step explanation:

The correct answer will be c. computing the average distance between every pair of observations between two clusters

What is Cluster Analysis?

Grouping "things" into "similar" groups is one of the most fundamental, straightforward, and frequently overlooked techniques (or processes) of comprehending and learning, on which cluster analysis is based. To create clusters of a particular type, this process uses a variety of different algorithms and techniques. It is also a component of data management in statistical analysis.

A multivariate data mining technique called cluster analysis aims to group things (such goods, responders, or other entities) based on a set of user-selected features or characteristics. Data compression, machine learning, pattern recognition, information retrieval, and other areas all use this essential and crucial phase of data mining, which is also a widely used method for statistical data analysis.

Here as per the given question, there are two clusters given.

Hence, computing the average distance between every pair of observations between two clusters.

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9514 1404 393

Answer:

  \({n^\frac{4}{5}\)

Step-by-step explanation:

The expression you show evaluates to (5/n)(4) = 20/n. Since you're referring to rational exponents, we assume you want to rewrite ...

  \(\sqrt[5]{n^4}\)

A root index is the same as a fractional exponent with that index in the denominator. Then this expression is rewritten as ...

  \(\sqrt[5]{n^4}=(n^4)^{\frac{1}{5}}=\boxed{n^{\frac{4}{5}}}\)

True, The range of a linear transformation defined by the matrix transformation t(x) = Ax is equal to the column space of matrix A.


The range of a linear transformation defined by the matrix transformation t(x) = ax is equal to the column space of matrix A (col A).

The range of a linear transformation is the set of all possible output values. In this case, the matrix A represents the transformation, and the column space of matrix A represents the span of the columns of A. The column space of matrix A is the set of all possible linear combinations of the columns of A.

To prove that the range of the linear transformation t(x) = Ax is equal to the column space of matrix A, we can show that every vector in the column space of A can be obtained as an output of the transformation t(x) = Ax. Additionally, we can show that every output of the transformation t(x) = Ax belongs to the column space of A.


Therefore, it is true that the range of a linear transformation defined by the matrix transformation t(x) = Ax is equal to the column space of matrix A.

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Answer:m∠1 = 145°

m∠2 = 35°

m∠3 = 35°

m∠4 = 145°

m∠5 = 145°

m∠6 = 35°

m∠7 = 35°

m∠8 = 145°

Step-by-step explanation:

The required value of a is 20°.

In geometry, complementary angles are defined as two angles whose sum is 90 degrees. In other words, two angles that add up to 90 degrees are known as complementary angles.

Now it is given that,

m22 = (a + 15)° and m23 = (a + 35)°

Let m22 and m33 be the angle between HL and HJ.

And since HL is perpendicular to HJ therefore they are complement ot each other.

Thus,

m22 + m23 = 90°

⇒ (a + 15)° +  (a + 35)° = 90°

⇒ a° + 15° +  a° + 35° = 90°

⇒ 2a° +50° = 90°

⇒ 2a° = 90° - 50°

⇒ 2a° = 40°

⇒ a° = 40°/2

⇒ a° = 20°

Thus, the required value of a is 20°.

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Answer:

Step-by-step explanation:

Answer:

x=-38

Step-by-step explanation:

-19*2=-38

Hope this helps! Pls give brainliest! Also sub to kgir633 on yt.

The probability that a student who has a brother also has a sister is 2/7 or approximately 0.2857.

To find the probability that a student who has a brother also has a sister, we need to use the concept of conditional probability.

Let's first find the probability of a student having both a brother and a sister. According to the problem, there are 2 students who have both a brother and a sister. Therefore, the probability of a student having both a brother and a sister is:

P(Brother and Sister) = 2/23

Now, let's find the probability of a student having a brother:

P(Brother) = 7/23

Using the formula for conditional probability, we can find the probability that a student who has a brother also has a sister:

P(Sister|Brother) = P(Brother and Sister) / P(Brother)

Substituting the values we found, we get:

P(Sister|Brother) = (2/23) / (7/23) = 2/7

This means that if we randomly select a student who has a brother, the probability that they also have a sister is about 0.2857.

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13 6/8 or 13 3/4 they are both right answers

Answer:

136

Step-by-step explanation:

272÷2=126

Answer:

Its 81 in3

Step-by-step explanation:

(i took the test)

Applying the tangent theorem and the Pythagorean theorem, the length of AB is 45 units.

According to the tangent theorem, a tangent will form a right angle with the radius of a circle at the point of tangency.

Tangents are perpendicular to the radius at the tangent point

Triangle ABO is therefore a right triangle.

AO = CO = 24 units

OC is also radius of circle O,

Therefore OC = 24

OB = OC + CB = 24 + 27 = 51

OB = √( OA² + AB²)      

AB = √( OB²  - OA²)  

= √( 2601 - 576 )

= √2025   = 45

Therefore, the value of AB is 45.

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Answer:

It will cost $42 for 28 binders

Step-by-step explanation:

We know that 15 binders = 22.50 dollars . We need to find the cost of 18, 30, 28, and 48 binders to figure out if they match up with the statements. One way to do this is to find the cost for one binder, and then multiply that by the number of binders to find the cost for a certain number of binders. For example, if one binder costs 2 dollars, five binders would cost 2 * 5 = 10 dollars.

To figure out how much one binder costs, we can use the division property of equality to divide both sides of our equation (15 binders = 22.50 dollars) by 15. We divide by 15 because anything divided by itself is equal to 1, and that would make it 1 binder = something dollars.

Applying this, we get

(15 binders)/15 = (22.5 dollars)/15

1 binder = 1.5 dollars

For 18 binders, this would cost 1.5 * 18 = 27 dollars. We know this because we add 1.5 dollars for each binder.

For 30 binders, this would cost 30*15=45 dollars

For 28 binders, this would cost 1.5 * 28 = 42 dollars

For 48 binders, this would cost 1.5*48 = 72 dollars

The only one that matches up is 28 binders for 42 dollars

Answer:

$42 for 28 binders.

Step-by-step explanation:

B

(a) The junction capacitance per unit area is approximately 1.75 x 10^-5 F/cm². (b) To double the junction capacitance, we need to increase the acceptor concentration by a factor of 4. In other words, we need to increase NA from 2 x 10^15 cm⁻³ to 8 x 10^15 cm⁻³.

(a) The junction capacitance per unit area can be calculated using the following formula:

C = sqrt((qε/NA)(ND/(NA+ND))×V)

Where:

Plugging in the values given in the question, we get:

C = sqrt((1.6 x 10^-19 C × 12.4 ε0 / (2 x 10^15 cm⁻³)) × (3 x 10^16 cm⁻³ / (2 x 10^15 cm⁻³ + 3 x 10^16 cm⁻³)) × 1.6 V)

C ≈ 1.75 x 10^-5 F/cm²

(b) To double the junction capacitance, we need to increase the acceptor concentration (NA) by a certain factor. We can use the following formula to calculate this factor:

F = (C2/C1)² × (NA1+ND)/(NA2+ND)

Where:

Plugging in the values from part (a) as C1 and NA1, and using C2 = 2C1, we get:

2C1 = sqrt((qε/NA1)(ND/(NA1+ND))×V) × 2

Squaring both sides and simplifying, we get:

NA2 = NA1 × 4

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Answer:

5 weeks

Step-by-step explanation:

We know that she works at a rate of $12 an hour, she also works 20 hours a week.

The total amount she makes per week is $240 (12 x 20). However, that is without deductions. We have to subtract $34 from the $240.

$240 - $34 = $206.

$206 is the amount she makes in a week and she wants to save $950. How many weeks does she have to save? Well, let's divide.

$950 / $206 = 4.6 weeks. However, if we have to round up to 5 weeks.