PLZ HELP ME ITS DUE TOMORROW!!!!

Answer:

10

Step-by-step explanation:

simple math

Answer:

21

Step-by-step explanation:

lolllllllll

The statement that best describes the function f(x) = 2x² - 3x + 1 is D. It fails the vertical line test.

More formally, a function is a set of ordered pairs (x, y) such that each x-value corresponds to one and only one y-value. The set of all possible input values is called the domain of the function, and the set of all possible output values is called the range.

Functions can be represented graphically, with the input values along the x-axis and the output values along the y-axis. A function is said to be continuous if its graph is a continuous curve without any breaks or jumps.

There are different types of functions, such as linear functions, quadratic functions, exponential functions, trigonometric functions, and many more. Each type of function has its own set of rules and properties that govern its behavior.

The statement that best describes the function f(x) = 2x² - 3x + 1 is:

D. It fails the vertical line test.

The vertical line test is a graphical test used to determine whether a relation is a function. If any vertical line intersects the graph of the relation more than once, then the relation fails the vertical line test and is not a function.

For the given function f(x) = 2x² - 3x + 1, if we draw a vertical line at x = 1/2, it intersects the graph of the function at two points, indicating that the function fails the vertical line test and is not a function. Therefore, option D is the correct statement.

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Answer:

45+3.x

Step-by-step explanation:

Each person gets a haircut --> 3.15= 45

what you mean but heres the points on the map u were talking about

Answer: The slope m = 3/5

Step-by-step explanation:

The slope can be found by using the formula: m = y2 - y1 / x2-x1

Where m is the slope and (x1, y1) and (x2, y2) are the two points on the line.

x1 = 2  , y1 = 1

x2 = -3 , y2 = -2

Substituting the values from the points in the problem gives :

m = -2-1 / -3-2

m = 3/5

Hence, the slope that passes through (2, 1) and (-3, -2) is 3/5.

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Step-by-step explanation:

2 + 3 × 6 + 4 × 3

Here, Parantheses should be put,

(2 + 3) × 6 + 4 × 3. (P.E.D.M.A.S) ( First Parantheses)

= 5 × 6 + 4 × 3 (Then multiplication)

= 30 + 12. (At last addition)

= 42

Answer:

x = 2

Step-by-step explanation:

8 = 6x + -2x

8 = 4x

8 = 4x

4 4

2 = x

Answer:

GCF = 49y³

Step-by-step explanation:

We need to find the GCF of 98y⁴ and 147y³.

Prime factorization of 98y⁴ = 7×7×2×y⁴

Prime factorization of 147y³ = 7×7×3×y³

Common factors are = 7×7y³

= 49y³

Hence, GCF is 49y³

The fraction 3/7 will not make the equation true.

so the answer is No.

In mathematics, a fraction is a representation of a part of a whole or a division of one quantity by another. It is expressed in the form of a ratio of two integers, where the number on the top is called the numerator and the number at the bottom is called the denominator.

The fraction 3/7 will not make each equation true.

To see why, we can simply substitute 3/7 into each equation and check if it makes the equation true.

For the equation, we have:

\(\sf 18 \times \huge \text (\dfrac{3}{7}\huge \text) = (2 \times 3 \times 3) \times \huge \text (\dfrac{3}{7}\huge \text) = \dfrac{54}{7}\)

So the left-hand side simplifies to 54/7, which is not the same as the right-hand side of 42. Therefore, the fraction 3/7 does not make the second equation true.

Therefore, The fraction 3/7 will not make the equation true.

so the answer is No.

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Answer:

Step-by-step explanation:

\((-1,4)=(x_1 ,y_1)\\\\y=-6x +3\\\\m = -6\)

Substitute values into point-slope form

\(y-y_1=m(x-x_1)\\\\\\y -4=-6(x -(-1))\\\\y-4=-6(x+1)\\\\y-4 =-6x -6\\\\y =-6x-6+4\\\\y =-6x -2\)

The answer is one of the last two. I am pretty sure that it is corresponding but I could be wrong.

Answer:

389202838

Step-by-step explanation:

Answer:

\(\boxed {y - 4 = -6(x - 6)}\)

Step-by-step explanation:

Since you already have the given slope and the given point, use the Point-Slope Formula to make it a Point-Slope Form:

\(y - y_{1} = m(x - x_{1})\)

Slope: \(m\)

First Point: \((x_{1}, y_{1})\)

-Substitute both the given slope and the given point:

Slope: \(-6\)

First Point: \((6,4)\)

\(\boxed {y - 4 = -6(x - 6)}\) (Substituted in Point-Slope Form)

Answer:

y-4 = -6(x-6)

Step-by-step explanation:

We are given that a line has a slope of -6 and a point of (6, 4).

We want to find the equation of this line in point-slope form.

Point-slope form is given as \(y-y_1=m(x-x_1)\), where m is the slope and \((x_1, y_1)\) is a point.

Substitute the value of m (which is -6) into the formula for point-slope form.

\(y-y_1=-6(x-x_1)\)

Now, substitute 6 and 4 as \(x_1\) and \(y_1\) respectively.

\(y-4=-6(x-6)\)

The number of ways it can be done if order of the choices is taken into consideration is 15,444 ways

Permutation has to do with arrangement and combination has to do with selection.

If we are choosing 5 objects, without replacement, from 15 distinct objects, this has to do with permutation if the order of the choices is taken into consideration

15P5 = 15!/(15-5)!5!
15P5 = 15!/10!5!
15P5 = 15*14*13*12*11/5*4*3*2

15P5 = 15,444 ways

Hence the number of ways it can be done if order of the choices is taken into consideration is 15,444 ways

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Complete question

Suppose we want to choose 5 objects, without replacement, from 15 distinct objects. How many ways can this be done, if the order of the choices is taken into consideration?

Answer:

Just some background:

Congruent means that a triangle has the same angle measures and side lengths of another triangle.

SAS congruence theorem: If two sides and the angle between these two sides are congruent to the corresponding sides and angle of another triangle, then the two triangles are congruent. Congruent triangles: When two triangles have the same shape and size, they are congruent.

Let's look at A first.

The triangle on left, we know 40 and 30 degree angles. So 3 all angles together = 180, so the 3rd angle = 180-30-40 = 110.

Now look at the triangle on the right. The angle shown is 110! This angle is between the sides marked with || and ||| marks, indicating that those two sides are the same length between both triangles.

Therefore both triangles are the same by Side-Angle-Side or SAS.

Now look at B.

It's a right triangle. We are missing 1 side of each triangle.

Let's solve for the missing "leg" of the triangle on the right. The pythagorean theorem says that a^2 + b^2 = c^2 where a and b are the 'legs' or sides of the triangle and c is the hypotenuse (always the longest length opposite the right angle).

so 2^2 + b^2 = 4^2

4 + b^2 = 16

b^2 = 16-4

b^2 = 12

That missing side is the \(\sqrt{12}\).

This does NOT match the triangle on the left.

Theses two triangles are NOT congruent.

Based on the statistical analysis, there is not enough evidence to conclude that the water from the new source contains unsafe levels of copper at the 0.05 significance level.

Statistics is a branch of mathematics that deals with the collection, analysis, interpretation, presentation, and organization of data. It involves applying mathematical and statistical techniques to extract meaningful insights from data, and to make decisions and predictions based on this information. Statistics is used in a wide range of fields, including business, economics, social sciences, health sciences, engineering, and more. It helps researchers, analysts, and decision-makers to identify patterns, relationships, and trends in data, and to draw conclusions based on statistical evidence.

(a) To test whether the water from this source contains unsafe levels of copper, we need to perform a one-sample t-test with the null hypothesis that the mean copper content in the water is less than or equal to 1.3 mg/l and the alternative hypothesis that the mean copper content in the water is greater than 1.3 mg/l.

The test statistic is calculated as:

t = (x - μ) / (s / √n)

where x is the sample mean (1.36 mg/l), μ is the hypothesized population mean (1.3 mg/l), s is the sample standard deviation (0.18 mg/l), and n is the sample size (30).

Plugging in the values, we get:

t = (1.36 - 1.3) / (0.18 / √30) = 1.47

The degrees of freedom for this test is n - 1 = 29.

Using a t-table or calculator, we find the p-value associated with a t-statistic of 1.47 and 29 degrees of freedom to be approximately 0.076.

Since the p-value is greater than the significance level of 0.05, we fail to reject the null hypothesis. Therefore, there is not enough evidence at the 0.05 level to conclude that the water from this source contains unsafe levels of copper.

Conditions for Independence: It is assumed that the water samples are independent of each other. This is because the sample is randomly selected and the size is less than 10% of the population. Also, it is assumed that the copper content in one water sample does not affect the copper content in another water sample.

Conditions for Normality: It is assumed that the distribution of the copper content in the population is approximately normal. We can justify this assumption based on the central limit theorem, which states that the distribution of the sample mean approaches normality as the sample size increases. Since the sample size is 30, we can assume that the sample mean follows a normal distribution. We can also check the normality assumption by creating a histogram or a normal probability plot of the data.

Therefore, based on the statistical analysis, there is not enough evidence to conclude that the water from the new source contains unsafe levels of copper at the 0.05 significance level.

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Answer:

The zeroes of f(x) = (x-7)(x+8) are 7 and -8.

Step-by-step explanation:

You have to figure out what makes each of the equal to zero.

Step 1 : Make the 2 equations both equal 0.

x-7 = 0

x+8 = 0

Step 2: Solve for x

x-7 = 0

x=7

x+8 = 0

x=-8

So 7 and -8 are both zeroes of this function.

Answer:

9

Step-by-step explanation:

figure it yourself...... .... ....

Answer:

Hello!

Im using 3.14 for pi

circumference: 43.96

area: 153.86

Hope that helps!

Answer:

43.96km

Step-by-step explanation:

hope this helps, braniliest  plzz

Answer:

(- 3, 1.5)

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

Given system:

The first expression is ready to be substituted as no further operation is required to simplify it.

Find x:

Answer:

x∈[3,9]

Step-by-step explanation

first

x+2≥5

x+2<11

next

x≥3

x<9

last

x∈[3,9]

Answer:

3 ≤ x < 9

Step-by-step explanation:

Answer:

110

Step-by-step explanation:

supplementary angles means sum of angles is 180.

5x-30+x+90 = 180

6x = 120

x=20

larger angle is 110

The larger angle of the two supplementary angles is 110°.

Two angles are said to be complementary if their sum is 90° and two angles are supplementary if their sum is 180°.

Given, Two supplementary angles measure (5x - 30)° and (x + 90)°.

Therefore their sum must be 180°.

So,  (5x - 30)° + (x + 90)° = 180°.

6x + 60° = 180°.

6x = 120°.

x = 20°.

So, the measure of two angles are  (5×20 - 30)° = 70° and

(20 + 90)° = 110°.

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Answer:

S₇ = 514.75

Step-by-step explanation:

the nth term of a geometric sequence is

\(t_{n}\) = a\(r^{n-1}\)

where a is the first term and r the common ratio

given t₂ = 24 and t₅ = 81 , then

ar = 24 → (1)

a\(r^{4}\) = 81 → (2)

divide (2) by (1) to eliminate a

\(\frac{ar^{4} }{ar}\) = \(\frac{81}{24}\)

r³ = \(\frac{81}{24}\) ( take cube root of both sides )

\(\sqrt[3]{r^{3} }\) = \(\sqrt[3]{\frac{81}{24} }\)

r = 1.5

substitute r = 1.5 into (1) and solve for a

a × 1.5 = 24 ( divide both sides by 1.5 )

a = 16

the sum to n terms of a geometric sequence is

\(S_{n}\) = \(\frac{a(r^{n}-1) }{r-1}\) , then

S₇    = \(\frac{16((1.5)^{7}-1)) }{1.5-1}\)

      = \(\frac{16(17.0859375-1)}{1.5-1}\)

     = \(\frac{16(16.0859375)}{0.5}\) ( divide 16 by 0.5 )

     = 32 × 16.0859375

     = 514.75

Answer: Hence, the time taken by the experienced crew would be 9 hours.

Step-by-step explanation:

Answer:

Step-by-step explanation

Standard form

\(y" + P(x)y'+Q(x) y =0\)

Hence your P(t) = -3, Q(t) = 2

\(y(x) = Vy_1(x)\rightarrow y'(x) = V'y_1(x) + Vy_1'(x) ~~~and ~~~y"(x) = v"y_1(x) +2V'y_1'(x)+Vy_1(x)\)

After replacing all y", y' and y to homogeneous part, you will have

\(e^x V"+5e^x V'=0\longleftrightarrow V"+5V'=0\) because \(e^x\ne 0\)

Let U = V'

\(U'+5U=0\rightarrow \frac{du}{u}=-5dx\) .

\(lnu= -5x \rightarrow u = e^{-5x}\)

Replace back,

\(V' = e^{-5x}\rightarrow V= \frac{e^{-5x}}{-5}\)

then

\(y(x) = V y_1(x) = \frac{e^{-4x}}{-5}\)

So, general solution of the ODE is

\(Ay_1(x) + By_2(x)\)

Particular solution is just take derivative of the general one twice and plug back into the original ODE to find A and B

You can finish it by yourself. Let me know if you need more help

Answer:

( -∞, -2.5] ∪ (-1, 2)

Step-by-step explanation:

1/(x + 1) ≥ 3/(x - 2)

x - 2 ≥ 3(x + 1)

x - 2 ≥ 3x + 3

x - 3x ≥ 3 + 2

-2x ≥ 5

x ≤ -2.5

Interval notation:

( -∞, -2.5] ∪ (-1, 2)

Answer:

yes it is a function it passes the vertical line test

The linear function that models the situation is given as follows:

d = 0.85t.

A proportional relationship is a relationship in which a constant ratio between the output variable and the input variable is present.

The equation that defines the proportional relationship is a linear function with slope k and intercept zero given as follows:

y = kx.

The slope k is the constant of proportionality, representing the increase or decrease in the output variable y when the constant variable x is increased by one.

The constant ratio for this problem is given as follows:

k = 0.83, as each division of d by t has a result of 0.83.

Hence the equation is given as follows:

d = 0.83t.

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Answer:

250 - 6 - 3n

Step-by-step explanation:

Let n equal the number of students.

Answer:

I just edited the file you linked.

Answer:

HERE IS THE REAL ANSWER!!! >

Step-by-step explanation:

I added the file so yeah also its correct!

Answer:

B only

Step-by-step explanation:

Triangles A and C are similar, but not congruent to each other. Similar triangles have proportional sides and congruent angles, while congruent triangles have congruent sides and congruent angles.

Therefore, only B is correct

The question is asking for pairs of congruent triangles but lacks key information needed to accurately answer this, such as lengths or angles. Congruent triangles are identified in geometry based on either side-lengths or angles.

The question is about congruent triangles, which in mathematics means triangles that have the same size and shape. But to accurately answer which pairs show two congruent triangles, we need more information. The options provided include 'A', 'B', and 'C' but without knowing more about these elements (for example their lengths or angles), it is impossible to determine which are congruent. Congruent triangles are identified in geometry based on either side lengths (SSS: Side-Side-Side, SAS: Side-Angle-Side, ASA: Angle-Side-Angle) or angles (AAS: Angle-Angle-Side, HL: Hypotenuse-Leg for right triangles). Without this vital information, we cannot definitively answer the question. Be sure to verify all the properties required to prove two triangles congruent.

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For the given question, Let x represent the number of weeks and y represent the total amount of money in the account.

Peter and Sam both opened a savings account when they got their first job.

Peter started with 150 in his account and deposits $30 each week.

So, the equation of Peter will be:

Sam started with $90 in his account and deposits $45 each week.

So, the equation of Sam will be:

2. we will find when Peter and same will have the same amount in their account

so,

Solve the equation to find the value of (x):

Substitute with (x) into equation y1 or y2 to find the amount in their account

so,

So, the answer will be:

Peter and same will have the same amount in their account at 4 weeks. At this time they will both have $270 in their accounts