i need help with my homework PLEASE CHECK WORK WHEN DONE NUMBER 7

The solution set is A. {1.3, -0.5}.for the quadratic given equation

The quadratic equation is 4x² = 4 + 4x. We can rewrite this equation as 4x² - 4x - 4 = 0.

Using the quadratic formula, we have:

x = (4 ± √(4² - 4 * 4 * -4)) / (2 * 4) = (4 ± √(4² + 64)) / 8 = (4 ± √68) / 8

The solutions are:

x = (4 + √68) / 8 ≈ 1.3 and x = (4 - √68) / 8 ≈ -0.5

Therefore, the solution set is A. {1.3, -0.5}.

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Answer:

The correct option is;

A'(4, 4), B'(0, 4), C'(8, 8).

Step-by-step explanation:

The beginning coordinates are;

A -2, 2

B - 0, 2

C - 4, 4

Given that triangle ABC is dilated by 2, the center of dilation being the origin, (0, 0), we have;

Given that the center of dilation is the origin, we multiply the x, and y values by the scale factor as follows;

(x, y) → (2·x, 2·y)

Which gives;

A - (2, 2) → A'(2×2, 2×2) = A'(4, 4)

B - (0, 2) → B'(2×0, 2×2) = B'(0, 4)

C - (4, 4) → C'(2×4, 2×4) = C'(8, 8)

The correct option is A'(4, 4), B'(0, 4), C'(8, 8).

Step-by-step explanation:

(1/12)^-2b x 12^-2b+2=12

12^-(-2b) x 12^-2b+2=12

12^2b+(-2b+12)=12

2b-2b+12=12

=1

Answer:

hi do you mind making the question a bit clear? where is the table?

Step-by-step explanation:

Answer:

Anita's shape

Step-by-step explanation:

A shape with less number of sides will have longer sides.

Since, Anita's shape has less number of sides as compared to others.

Therefore, Anita's shape will have longest sides.

Answer:

18

Step-by-step explanation:

3x6

The value of x is 134.

Based on the diagram, we know that lines l, m, and n are parallel. Therefore, the alternate interior angles formed by transversal line m are congruent to the corresponding alternate interior angles formed by transversal line 11:

m and 11 are alternate interior angles, so they are congruent.

Also, the corresponding angles formed by transversals line n and 11 are congruent to the corresponding corresponding angles formed by transversals line m and 35:

11 and 35 are corresponding angles, so they are congruent.

Therefore, we can set up an equation based on the fact that the sum of the measures of the angles around any point is 360 degrees:

m + x + 35 = 180

Simplifying this equation, we get:

x + m = 145

Since m and 11 are congruent, we can substitute m with 11:

x + 11 = 145

Subtracting 11 from both sides, we get:

x = 134

Therefore, the value of x is 134.

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Its speed of Rachel would be 30 meters per second.

Given that,

Stunt driver Rachel is trying to get out of a building that is going to blow up.

Here, the equation is,

\(d = - 38t + 220\)

Where, variable d models Rachel's distance from her exit (in meters) t seconds after the cameras began recording the stunt.

Now, Velocity is the rate at which a distance changes over time.

\(d = - 38t + 220\)

\(\dfrac{d(d)}{dt} = - 38\)

Hence, Speed is the magnitude of velocity.

\(|- 38| = 38\)

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The equation sin(2x) + sin(x) = 0 is satisfied by two solutions on the interval [0, 2π): x = 0 and x = π.

To solve the equation sin(2x) + sin(x) = 0, we can rewrite it as sin(2x) = -sin(x).

Using the double-angle formula for sine, we have 2sin(x)cos(x) = -sin(x).

Now, we can consider two cases:

Case 1: sin(x) ≠ 0

In this case, we can divide both sides of the equation by sin(x), giving 2cos(x) = -1. Solving for cos(x), we find cos(x) = -1/2. This occurs at x = π/3 and x = 5π/3. However, we need to check if these values fall within the given interval [0, 2π). Only x = π/3 satisfies this condition.

Case 2: sin(x) = 0

If sin(x) = 0, then x must be an integer multiple of π. Within the given interval [0, 2π), x = 0 and x = π are solutions.

Therefore, the equation sin(2x) + sin(x) = 0 is satisfied by two solutions on the interval [0, 2π): x = 0 and x = π.

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Hello!

In the given figure we can see that it is a right angled triangle .

Where,

Base is 9

We have to find the value of x i.e Hypotenuse

Here we are given base and we need to find the Hypotenuse.

Also we have been given the value of theta = 45°

Using trigonometric ratio :

cos \(\theta = \dfrac{ B}{H} \)

As per the question we have hypotenuse = x

Plugging the required values,

\( \cos 45 \degree = \dfrac{9}{x} \)

\( \dfrac{1}{ \sqrt{2} } = \dfrac{9}{x} \: \: \: \: \bigg(\because \cos 45\degree = \dfrac{1}{\sqrt2} \bigg)\)

further solving by cross multiplication

\(x = 9 \sqrt{2} \)

Hence, The value of x is 9√2

Answer : Option 1

Hope it helps! :)

The probability that a student studied for 5 hours is given as follows:

0.23.

A probability is calculated as the division of the desired number of outcomes by the total number of outcomes in the context of a problem/experiment.

The total number of students in this problem is given as follows:

1 + 3 + 2 + 5 + 9 + 7 + 3 = 30.

Out of those 30 students, 7 studied five hours, hence the probability is given as follows:

p = 7/30 = 0.23.

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Answer:

Step-by-step explanation:

15

The number of miles for which the cost of Uber and Lyft is the same is 30.

How to solve linear equations?
Given that the largest power of the variable (or pronumeral) in these equations is 1, linear equations are also known as first-degree equations. A line on the quadratic system is represented by a linear equation. This equation's general form is axe + b = 0, where a, b, and x are all integers and x is the variable. The y-axis is parallel to this form of equation's single solution, which it symbolizes.
The steps that should be followed while solving linear equations are listed below:
1) We must first determine which variable we need to isolate.
2) Next, make a distinction between variables and constants.
3) Arrange the constants on the right and the variables on the left.
4) Using established axioms, we carry out algebraic operations to determine the variable's value.

Let the number of miles covered be = x
Given, the cost of travel = Pickup Fee + Cost per mile
Given, the pickup fee for Uber = $ 0
The cost per mile for Uber = $ 0.25
Again, the pickup fee for Lyft = $ 3
The cost per mile for Lyft = $ 0.15
Thus, the cost of travel for Uber = 0 + 0.25x -- (i)
Also, the cost of travel for Lyft = 3 + 0.15x -- (ii)
As per question, (i) and (ii) are equal.
Thus, 0 + 0.25x = 3 + 0.15 x ⇒ (0.25 - 0.15)x = 3 ⇒ 0.10x = 3
⇒ x = 3/0.10 ⇒ x = 30
Thus, for 30 miles  the cost of Uber and Lyft is the same.

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Answer:

Neither A nor B

Step-by-step explanation:

The set of pairs, where the front member of every sequence pair must be unique.

Step-by-step explanation:

they are the same because FIGH just the ENLARGEMENT of ABCD

Answer:

Sounds like a good idea

Step-by-step explanation:

(mark this branliest if you do)

Answer:

YES

Step-by-step explanation:

Its so fun

The minimal approximation error A-A 2achievable by a rank-1 approximation A to A is

||A - A1||₂=0 where A is 2×2 matrix.

We have given a matrix A as seen in above figure or A = [ 5 15 ; 6 18 ; -1 -3 ; -4 -12 ; 2 6]

note here that C₂= 3C₁

where Cᵢ --> iᵗʰ column

v = [ 5 ; 6 ; -1 ; -4 ; 2]

||v||² = 82 => ||v|| = √82

and A At v = 820 v

and A At = [ 82 246 ; 246 738]

AAt [1;3] = 820[1;3]

=> v1 = 1/√10(1,3)^t

Then the best rank of 1 approx

= √820 /√80√10 [ 5 ; 6 ; -1 ; -4 ; 2] [ 1 3]

= A

Since , the rank of matrix A is one so, the minimal approx. value is ||A - A1||2 = 0

Hence, the minimal Approx. ||A - A1||2 = 0 .

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Complete question:

Consider the matrix A: A = [5 15] 6 18 -1 -3 -4 -12 [26] What is the minimal approximation error A-A 2 achievable by a rank-1 approximation A to A? Hint: Can you determine this without explicitly calculating the SVD?

The probability, when x = 4, in a binomial probability distribution with n = 8 and p = 0.20, is 0.1653.

In a binomial probability distribution, the formula to calculate the probability of a specific value is P(x) = C(n, x) * p^x * (1 - p)^(n - x), where P(x) is the probability, n is the number of trials, x is the desired value, p is the probability of success in a single trial, and C(n, x) represents the binomial coefficient.

In this case, we are given n = 8 (the number of trials) and p = 0.20 (the probability of success in a single trial). We want to calculate the probability when x = 4.

Plugging these values into the formula, we have P(4) = C(8, 4) * (0.20)^4 * (1 - 0.20)^(8 - 4). Using the binomial coefficient, C(8, 4) = 70, we can simplify the equation further: P(4) = 70 * (0.20)^4 * (0.80)^4.

Evaluating the equation, we find that P(4) = 0.1653.

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The expression (1 + tanx / 1 - tanx) + (1 + cotx / 1 - cotx) = 0 is true

We can prove that the expression (1 + tanx / 1 - tanx) + (1 + cotx / 1 - cotx) = 0 as illustrated below:

Consider the left hand side, LHS

Multiply (1 + cotx / 1 - cotx) by (tanx / tanx), we have:

(1 + tanx / 1 - tanx) + (1 + cotx / 1 - cotx) × (tan x / tan x)

(1 + tanx / 1 - tanx) + (tanx + cotxtanx / tanx - cotxtanx)

Recall,

cotx = 1/tanx

Thus, we have

(1 + tanx / 1 - tanx) + (tanx + 1 / tanx - 1)

Rearrange

(1 + tanx / 1 - tanx) + (1 + tanx / -1 + tanx)

(1 + tanx / 1 - tanx) + (1 + tanx / -(1 - tanx)

(1 + tanx / 1 - tanx) - (1 + tanx / 1 - tanx) = 0

Thus,

LHS = 0

But,

Right hand side, RHS = 0

Thus,

LHS = RHS = 0

Therefore, we can say that the expression (1 + tanx / 1 - tanx) + (1 + cotx / 1 - cotx) = 0, is true

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Complete question:

Prove that (1 + tanx / 1 - tanx) + (1 + cotx / 1 - cotx) = 0

Answer:

Step-by-step explanation:

factors of 8

Answer:

F- of a 8* i think

Step-by-step explanation:

The mean and standard deviation of sampling distribution are 0.0187 and 0.010 respectively

The mean is a measure of location which tells us the average of observation.

Standard deviation tells us how dispersed a data is or how much variation our data contains.

According to question,

The population size : N = 1500

Number of fraudulent in a month : 28

Population proportion : P = 28/1500

=> P = 0.0187

Sample size: n = 180

Sample proportion : p = 28 / 180

=> p = 0.156

Therefore The mean of sampling distribution for the sample size 28,

μ = P

=> μ = 0.0187

The standard deviation will be

=> σ = \(\sqrt{\frac{p(1-p)}{n}}\)

Substituting the value,

=>  σ = \(\sqrt{\frac{0.0187(1-0.0187)}{180}}\)

=>  σ  = 0.010

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A parabola has an axis of symmetry y =3 and passes through the point (2, 1), another point that lies on the graph of the parabola is (2,5).

Axis of symmetry:

Axis of symmetry is a line that divides an object into two equal halves, thereby creating a mirror-like reflection of either side of the object.

Given,

Axis of Symmetry y = 3.

One point = (2,1)

Here we need to find the another point that lies on the graph of the parabola.

Use the axis of symmetry.

Point given (2,1) is 2 units away from that axis, lower.

=> 1 + 2 = 3

Take two units higher,

=> 3 + 2 = 5

and is the another point (2,5), on the same parabola.

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Parallel lines are two straight lines that never cross. For this to happen, the lines have to have the same slope.

In this case, the equation given is in what's called "slope-intersect" form. The general form of the slope intercept formula is y=mx + b where m is the slope of the line and b is the point on the Y-axis where the line crosses.

The equation given is y=5x+3 and since the 5 is in the place of m from the general equation, 5 is the slope. Since parallel lines have the same slope, 5 is the answer.

Slope-Intercept Form:

When we're given a linear equation we can immediately see if it's in the slope-intercept form if it follows the format  y=mx+b. As long as y does not have a coefficient the slope and y-intercept are the values of m and b.

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Answer:

36 servings

Step-by-step explanation:

1/4p = 6s

6(1/4p) = 6(6s)

1 1/2p = 36s

The value of both domain and range of this exponential function is (−∞,∞).

y = 2x-9

The domain of the function can be defined as all real numbers except the ones where the expression is undefined. In the case of 2x-9, there is no real number for which this expression is undefined. Therefore, a domain of this exponential function is (−∞,∞).

The range of the function is defined as the set of all valid y values. In this case, all real numbers are valid values of y. Therefore, the range of this exponential function is (−∞,∞).

Therefore, domain of y = 2x-9 is (−∞,∞) and range is also (−∞,∞).

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Answer:

4.5

Step-by-step explanation:

1. The slope/unit rate in this equation is 4.5. The constant of proportionality, k, is the same thing as the slope, meaning that's the k = 4.5.

Answer:

..................................

The correct answer is  8.5 in.

we know that

The formula of area of triangle is equal to

             \(A = \frac{1}{2} (b) (h)\)

We have

b = BC = 6 in

h = AD = x in

substitute

\(A = \frac{1}{2} (6) (x)\)

\(A = 3x^{2} in^{2} ..................(1)\)

Heron's Formula is a method for calculating the area of a triangle when you know the lengths of all three sides.  

Let  a,b,c be the lengths of the sides of a triangle.  

The area is given by:-

\(A = \sqrt{p(p-a) (p-b) (p-c)}\)                     where p is half the perimeter

\(p = \frac{a +b+ c}{2}\)

a = 9 in , b= 9 in, c = 6 in

\(p = \frac{9 + 9 + 6}{2} = 12 in\)

Find the area

\(A = \sqrt{12( 12 - 9) (12-9) (12 - 6)}\)

\(A = \sqrt{12 (3)(3)(6)}\)

\(A = \sqrt{648}\)

\(A = 25.46 in^{2}\)

Substitute the value of the area in the equation 1 and solve for x

\(A = 3x in^{2}\)

25.46 = 3x

x = 25.46/3

x = 8.5 in

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The complete question is -

HELP PLEASE! Find the height of the triangle by applying formulas for the area of a triangle and your knowledge about triangles.

A. 8 in.

B. 11.3 in.

C. 8.5 in.

D. 6.2 in.

Answer:

I think that it is 39.2 but i'm not 100% sure

Step-by-step explanation:

Hope this helps!