PLEASE PLEASE PLEASE HELP ME Which of the following is a perfect square trinomial?

A) x^2-8x+16
b) x^2+4x+36
C) 4x^2-20x-25
D) x^2-16

Answer:

A. (y - 2) = 5(x + 3)

General Formulas and Concepts:

Algebra I

Point-Slope Form: y - y₁ = m(x - x₁)  

Step-by-step explanation:

Step 1: Define

Point (-3, 2)

Slope m = 5

Step 2: Write Equation

Substitute in variables into general form.

y - 2 = 5(x + 3)

Answer:

156,000

Step-by-step explanation:

Answer:

156,000

Step-by-step explanation:

Note the hundreds place value (underlined and bold):

155,999

Look at the digit value directly next to the given place value (tens place value). It is a 9. Because 9 is greater then 5*, you will round up:

155,999 rounded to the nearest hundreds place value is 156,000.

* Note when rounding:

If the digit to the right of the one you are finding is:

- Less than 5: Round down.

- 5 or greater: Round up.

~

The scientific notation of the mass of 105 cows is 4.305x10⁴

A method for expressing a given quantity as a number having significant digits necessary for a specified degree of accuracy.

Given that, the average mass of one cow is measured to be 410 kilograms.

Average mass of 105 cows = 105x410 = 43050 kilograms

43050 = 4.305x10⁴

Hence, The scientific notation of the mass of 105 cows is 4.305x10⁴

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The total cost of rents is $180.

In the given table,

The cost of skis per day  = $48

The cost of pole per day = $12

Now since given that,

Alveres rents for 3 days

Therefore,

The cost of skis for 3 days  = $48 x 3

                                             =  $144

The cost of pole for 3 days = $12 x 3

                                             = $36

To find the total cost of rental,

Adding the cost of 3 days of skis and cost of 3 days of poles,

Hence,

Total cost of rents = $144 + $36

                               = $180

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Answer:

the answer is b

Step-by-step explanation:

Answer:

D.) y= -3/7x - 20/7

Step-by-step explanation:

on edge 2021

Answer:

Both Mathematics and English : 25

Step-by-step explanation:

Total students: 100

math pass students: 50

English pass students: 70

both failed: 5

Now,

subject student : Total students-failed

: 100-5

: 95

Passed in both Subject: Math+English- S. S

: 50+70-95

: 25

: The students pass in both subject : 25

Given parameters:

Area of the rectangular garden  = 359ft²

Unknown:

length and width of the garden  = ?

To find the length and breadth of the garden, we need to define and know that the area of a rectangle is.

 Area of a rectangle  = Length x Breadth

From the problem statement;

 Let w = width of the rectangular garden

        L = length of the garden;

 Now,

          length of a rectangular garden is 5 feet less than 4 times its width

           L = 4w - 5

Now let us substitute this into the equation;

       Area  = L x w

    359 = (4w - 5)w

           4w² - 5w - 359

Using:

          w = -b ± √b² -  4ac  /  2a

 where b  = -5 , a  = 4  and c = -359

  w  =   -(-5)  ± √-5² - 4(4)(-359)  /  2(4)

 w = 5 ± √25 + 5744 / 8

 w =  5 ± 75.9 / 8

 w  = \(\frac{5 + 75.9}{8} or \frac{5 - 75.9}{8}\)

  w  = 10.1ft

 The other solution is not possible it will be a negative value. Width value cannot be negative.

So L = 4w - 5  = 4(10.1) - 5 = 35.5ft

The length and breadth of the rectangular are 35.5ft and 10.1ft respectively.

Answer:

add 7 to both sides which makes

6x=33

divide by 6

x=33/6 or 5.5

Step-by-step explanation:

Answer:

11/2 or 5.5

Step-by-step explanation:

The value of x is 4.

To determine the value of x, we can use the concept of similarity between shapes.

Similar shapes have corresponding sides that are proportional to each other.

Given the dimensions of the first shape as 5, x, and 5, and the dimensions of the second shape as 30, 24, and 30, we can set up the following proportion:

5/x = 30/24

To solve for x, we can cross-multiply:

30 · x = 5 · 24

30x = 120

Dividing both sides of the equation by 30:

x = 120 / 30

x = 4

Therefore, the value of x is 4.

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Answer:

112.5 km apart

Step-by-step explanation:

Multiply 7.5 by 15:

7.5(15)

= 112.5

So, in real life, they are 112.5 km apart

The distance between the two towns is 112.5km in real life.

The scale of the map replaces the original large measurements with the small measurements. To locate the original places and their distances is impossible on a map. In such a case, the large units are converted to small units and used instead of them.

The given map shows the distance between two towns as 7.5cm and the scale of the map is given as 1cm = 15km

So, the distance between those two towns is

= 7.5 × 15 km

= 112.5 km

Therefore, the distance between the two towns in real life is 112.5 km.

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Answer:

B (-1,0), (3,0)

Step-by-step explanation:

Quadratic Formula

Given statement solution is :- Mathematical models are extremely valuable tools in various fields, including chemistry, biology, and physics. They offer several advantages: Simplification and abstraction, Prediction and simulation, Cost and time efficiency, Insight and understanding.

Mathematical models are extremely valuable tools in various fields, including chemistry, biology, and physics. They offer several advantages:

Simplification and abstraction: Mathematical models allow complex systems or processes to be represented using simplified mathematical equations or algorithms. This simplification helps in understanding the underlying principles and relationships of the system, making it easier to analyze and predict outcomes.

Prediction and simulation: Models enable scientists to make predictions about the behavior of a system under different conditions. They can simulate scenarios that are difficult or impossible to observe in the real world, allowing researchers to explore various hypotheses and make informed decisions.

Cost and time efficiency: Models can be used to explore different scenarios and test hypotheses in a relatively quick and cost-effective manner compared to conducting real-world experiments. They can help guide experimental design by providing insights into the most relevant variables and parameters.

Insight and understanding: Mathematical models often reveal underlying patterns and relationships that may not be immediately apparent from experimental data alone. They provide a framework for organizing and interpreting data, leading to a deeper understanding of the system being studied.

However, mathematical models also have limitations and potential disadvantages:

Simplifying assumptions: Models are based on assumptions and simplifications, which may not fully capture the complexity of the real-world system. If these assumptions are incorrect or oversimplified, the model's predictions may be inaccurate or misleading.

Uncertainty and error: Models are subject to uncertainties and errors stemming from the inherent variability of the system, limitations in data availability or quality, and simplifying assumptions. It is crucial to assess and communicate the uncertainties associated with model predictions.

Validation and verification: Models need to be validated and verified against experimental data to ensure their accuracy and reliability. This process requires rigorous testing and comparison to real-world observations, which can be challenging and time-consuming.

Mathematical models are closely linked to the fields of chemistry, biology, and physics, providing valuable insights and predictions in these disciplines. Here are some examples:

Chemistry: Mathematical models are used to study chemical reactions, reaction kinetics, and molecular dynamics. One example is the use of rate equations to model the kinetics of a chemical reaction, such as the reaction between reactants A and B to form product C.

Biology: Mathematical models play a crucial role in understanding biological systems, such as population dynamics, gene regulation, and the spread of infectious diseases. For instance, epidemiological models like the SIR (Susceptible-Infectious-Recovered) model are used to simulate and predict the spread of diseases within a population.

Physics: Mathematical models are fundamental in physics to describe physical phenomena and predict outcomes. One well-known example is Newton's laws of motion, which can be mathematically modeled to predict the motion of objects under the influence of forces.

Quantum mechanics: Mathematical models, such as Schrödinger's equation, are used to describe the behavior of particles at the quantum level, providing insights into atomic and molecular structures and the behavior of subatomic particles.

Fluid dynamics: Mathematical models, such as the Navier-Stokes equations, are employed to study the behavior of fluids, including airflow, water flow, and weather patterns.

These examples demonstrate the wide range of applications for mathematical models in understanding, predicting, and simulating various phenomena in the fields of chemistry, biology, and physics.

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Answer:

give me more instructions so i can actually help

Step-by-step explanation:

Answer:

500$+500$=1000$

Step-by-step explanation:

for songs=50×10=500$

for movie=5×100=500$

total=500$+500$=1000$

50x+100y

hope it helps:)

Answer:

66-26 = 40

Step-by-step explanation:

u = 40 degrees

Answer:

1/30

Step-by-step explanation:

Answer:

why yall got the question i use to have now this 2021 i won nun off this ughhh i think it is D

Step-by-step explanation:

Answer:

A. A triangle with angles measuring 75°, 60°, and 45°

Step-by-step explanation:

Answer:

hope it's helps you.......

Answer: 179

Step-by-step explanation:

The population variance cannot be determined solely from a sample, but the sample variance can provide an estimate of it based on the data collected from the sample.

The population variance ) represents the variance of the entire population. In this case, the population consists of 179 students. However, if we take a sample of 25 students from this population, the variance of this sample is called the sample variance

The sample variance ) is used to estimate the population variance ). It is calculated using the following formula:

The population variance  cannot be determined solely from a sample, but the sample variance () can provide an estimate of it based on the data collected from the sample.

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The graph of the system of inequalities:

y  ≤ (1/4)*x - 2

y  ≥ −(5/4)x +2

Is in the image at the end.

Here we have the system of inequalities:

y  ≤ (1/4)*x - 2

y  ≥ −(5/4)x +2

To graph this, we just need to graph both of the linear equations, and we need to shade the region below the first line (the one with positive slope) and the region above the second line, the one with negative slope.

Then the graph of the system of inequalities is the graph you can see in the image at the end of the answer.

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Answer:

Therefore  the hypotenuse of the triangle is 15 cm and other two sides of the triangle are 9 cm and 12 cm and one angle of the triangle is 90°.

Step-by-step explanation:Pythagorean Theorem: According to this theorem the result obtained by  squaring the value of the hypotenuse of a right angled triangle is equal to the sum of the squares of the values other two sides of the triangle.

Hypotenuse = h

Altitude = l

Base = b

l²+b²=h²

Here 6²=36

9²=81

12²=144

15²=225

From the above it is clear that

81+144=225

⇒9²+12²=15²

Therefore  the hypotenuse of the triangle is 15 cm and other two sides of the triangle are 9 cm and 12 cm and one angle of the triangle is 90°.

Hope this helps!

Answer:

I believe it's Therefore  the hypotenuse of the triangle is 15 cm and other two sides of the triangle are 9 cm and 12 cm and one angle of the triangle is 90°. I'm not so sure sorry if it's incorrect

Step-by-step explanation:

Answer:

1/2=10

Step-by-step explanation:

it depends upon the area of the triwngle

Answer:

x=105, y=75 and z=105.....this is a map of parallellines and a transversal. ....angles x and 75 are supplementary angles x=180-75 ×=105...angles y and 75 are corresponding angles so, y=75..angles x and z are alternate exterior angles z=x

Answer:

$45000

Step-by-step explanation:

Loan's future= O *(1+rate)

Interest = principal x rate x time:

Interest = 5000 x 0.08 x (9/12) = 300

Total due = principal + interest

Total due = 5000 + 300 = $5,300

Answer:

ok will do

Step-by-step explanation:

Answer:

Well mate, I can't find the math questions.

Step-by-step explanation:

We have here a right triangle, and to find the sides of this triangle, we can use the Pythagorean Theorem:

Where a and b are the sides of the triangle and c is the hypotenuse. Then, we have:

Thus, the side x is (taking the square root to both sides of the equation):

Rounding the answer to the nearest hundredth, we have:

x = 17.32 units.

Answer:

x = 15

Step-by-step explanation:

3x - y = 30

Let y = 15

3x - 15 = 30

Add 15 to each side

3x-15+15 = 30+15

3x= 45

Divide each side by 3

3x/3=45/3

x = 15

Answer

Step-by-step explanation:

\(3x - y = 30 \\ 3x = 30 + y \\ x = \frac{30 + y}{3} \\ \\ \)

\(y = 15\)

\(x = \frac{30 + y}{3} \\ x = \frac{30 + 15}{3} \\ x = \frac{45}{3} \\ x = 15\)

hope this helps

brainliest appreciated

good luck! have a nice day!

Answer:  The correct answer is 47

Step-by-step explanation:

94 x .5 = 47

The actual base of the building is 1890 square feet.

A rectangle is a two-dimensional figure with length and width.

The area of a rectangle is Length x width.

We have,

1 inch = 15 feet

Rectangular base:

Length = 4.2 in

Width = 2 in

So,

4.2 in = 4.2 x 15 feet = 63 feet

2 in = 2 x 15 = 30 feet

Now,

The actual base of the building.

= 63 x 30

= 1890 square feet

Thus,

1890 square feet.

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Answer:

18

Step-by-step explanation:

The multiples of 9 are 9,18,27,36,45,54,63,...

The multiples of 6 are 6,12,18,24,30,36,42,...