Solve the following quadratic by
completing the square.
y = x² + 4x - 2
X
x = [?] ± √ [ ]
Please help me

Answer:

A= 153.94 mm

Step-by-step explanation:

A = πr²

A=π(7)²

A= 153.94 mm

Answer:

-16n-41

Step-by-step explanation:

Answer:

-16n - 41

Step-by-step explanation:

(2 • (-n - 3)) -  7 • (2n + 5)

-n - 3  =   -1 • (n + 3)

-2 • (n + 3) -  7 • (2n + 5)

-16n - 41  =   -1 • (16n + 41)

Use the leading term for your answer

-16n - 41

Using the Empirical Rule, it is found that about 143 trees fall within two standard deviations of the mean.

It states that, for a normally distributed random variable:

95% of the measures are within 2 standard deviations of the mean, hence, out of 150 trees, the amount is:

A = 0.95 x 150 = 142.5, rounded to 143.

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Answer:

20

Step-by-step explanation:

as we know

[tex] \tan {45}^{0} = 1 \\ [/tex]

20/ 1=20

is correct answer

Answer:

i dont have it the answer ofvthis

A parallel line has the same slope as the original line. So in this case the slope of the line is also 3/4. Now how do we know if it intersects the point? We need to adjust the y intercept.



Currently, we know the equation of the line is y= 3/4 x + b, where b is the thing we are looking for. We also have a point, which supplies the x and y. Plug that in and solve for b

-2 = (3/4)*(12) + b

You'll get b= -11

So the equation of the parallel line intersecting the point given is y= 3/4x -11.

I am assuming that the slope is 3/4 based on the way you formatted the original equation, but it's the same steps if the slope is different.

The center of the circle will be (4, -3) and the radius of the circle will be 6 units. Then the correct option is A.

A circle can be characterized by its center's location and its radius's length.

Let the center of the considered circle be at the (h,k) coordinate.

Let the radius of the circle be 'r' units.

Then, the equation of that circle would be:

(x - h)² + (y - k)² = r²

The equation is given below.

x² - 8x + y² + 6y - 11 = 0

     x² - 8x + y² + 6y = 11​​

Then the center and the radius of the circle will be

x² - 8x + 16 + y² + 6y + 9 = 11​ + 16 + 9

             (x - 4)² + (x + 3)² = 36

             (x - 4)² + (x + 3)² = 6²

Thus, the center and the radius of the circle will be (4, -3) and 6 units respectively.

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The 3D prism that produced the cross-section of a triangle is a triangular prism.

From the given figure, we can see that the cross-section is a triangle

One of the faces of a triangular prism is a triangle.

This means that when the triangular prism is cut vertically, a triangle face is created

Hence, the 3D prism that produced the cross-section of a triangle is a triangular prism.

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B; the y axis is what moves up and down

Answer:

72.8

Step-by-step explanation:

Step-by-step explanation:

please mark me as brainlest

Answer:

A= 4,5

Step-by-step explanation:

the required ans is above

Answer:

[tex]\{ 16, 25\}[/tex]

Step-by-step explanation:

[tex]x~ \text{is a perfect square and}~ 10 < x < 30 \\\\\text{The possible values of x are}:\\\\4^2 = 16\\\\5^2 = 25[/tex]

[tex]y^{-8} y^3 x^0 x^{-2}[/tex] is equivalent to [tex]y ^{-5} x ^{-2}\\[/tex].

Usually, simplification involves proceeding with the pending operations in the expression.

Simplification usually involves making the expression simple and easy to use later.

Given;

[tex]y^{-8} y^3 x^0 x^{-2}[/tex]

Simplify

[tex]y^{-8} y^3 x^0 x^{-2}\\\\y ^{-8+3} x ^{0-2}\\ \\y ^{-5} x ^{-2}\\[/tex]

Hence, [tex]y^{-8} y^3 x^0 x^{-2}[/tex] is equivalent to [tex]y ^{-5} x ^{-2}\\[/tex].

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Answer:

e: f=3 : 7 and f : g= 2 : 3

Step-by-step explanation:

here's the answer

Answer:

BD = BE

Step-by-step explanation:

If BD = BE , angle BED = angle BDE.

Because they are in a same triangle.

And also they are congruent.

Answer:

What is this supposed to mean even?

Step-by-step explanation:

Answer:

Hope this helps :D

Step-by-step explanation:

Explanation on picture

Answer:

1814400

Step-by-step explanation:

The formula in factored form is (t - 3)(t - 9) and the swimmer dives into the water 3 seconds after the timer was started also, the swimmer comes back up 9 seconds after the timer was started.

Analysis:

at h(t) = 0 that is when the diver has not dived or at height 0 foot

the equation becomes [tex]t^{2}[/tex] -12t + 27 = 0

by factorizing,

[tex]t^{2}[/tex] -9t -3t + 27 = 0

(t-9)(t-3) = 0, this is the equation in factored form.

t = 3 or 9

These are the times, the height h(t) = 0

Which means the swimmer dived 3 seconds later or got to the top of water after 9 seconds in which case h(t) = 0

In conclusion, the swimmer dives 3 seconds later after the timer was started and the swimmer comes back up after 9 seconds are the true statements for this problem.

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Answer:

The swimmer comes back up 9 seconds after the timer was started.

The swimmer dives into the water 3 seconds after the timer was started.

Step-by-step explanation:

Answer:

detailed explanation is in image

Step-by-step explanation:

ans is 60 unit²

MARK ME THE BRAINLIEST !

Answer:

60 cm2

Step-by-step explanation:

Formula for finding out the area of the figure -

Area of full rectangle - Area of unshaded rectangle = Area of shaded region

Area of full rectangle =

Area of unshaded rectangle =

Putting the formula = 96-36 = 60cm2

Hence the area of shaded region = 60cm2

I gave the answer first !

Answer:

Step-by-step explanation:

Comment

The theoretical probabilities are

Red: 8/20 = 0.4

Blue:6/20 = 0.3

yellow:6/20 = 0.3

The experimental Probabilities are

Red: 11/40 = 0.275

blue: 11/40 = 0.275

Yellow: 18/40=0.45

Both probabilities add to 1 as they should

The yellow is the highest disproportionate answer and it really shouldn't be. If anything it should be red. (0.45 > 0.4 comparing yellow experimental with red theoretical. The yellow is way more than it should be)

The number of trials is double the number of marbles in the jar. The number of trials would be double for each color in the jar. Both blanks are double.

Answer:

65 %

Step-by-step explanation:

625 out of 940 is what %  ?

625/940  x  100% = 66.49%

Answer:

3.) (5,2), (5,5), and (9,2)

Step-by-step explanation:

The triangle currently has the coordinates (2,0), (6,0), and (2,3).

If you want to translate the triangle up 2 units, you need to add 2 to each "y" value.

(2,0)  -----------> y = 0  ------------> new y = 2

(6,0) -------> y = 0   --------------> new y = 2

(2,3)  ----------> y = 3 -----------> new y = 5

If you want to translate the triangle 3 units to the right, you need to add 3 to each "x" value.

(2,0)  -----------> x = 2  ------------> new x = 5

(6,0) -------> x = 6  -------------->  new x = 9

(2,3)  ----------> x = 2 ----------> new x = 5

Therefore, the new coordinates are (5,2), (9,2), and (5,5).

The area of the given figure is 16.4 cm² and the Length of the side is 8.1 cm. therefore, the volume of the given figure is 132.84 cm³.

For finding the volume of the considered figure, we somehow need measurement of its correct dimensions by which we would be able to recreate the figure.

By any means, if we could get enough measurement, then we'd be able to characterize the figure, and thus, get its volume.

Area = 16.4 cm²

Length of side = 8.1 cm

The volume of the given figure

= Area x side

= 16.4 x 8.1

= 132.84 cm³

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Answer:

1. 3.33333333333

2. -1.3

3. 2.61904761905

4. 2.00833333333

Answer:

y = 28 - x

Step-by-step explanation:

The variable x represents how many buttons Paula had before giving 28 away and the variable y represents how many buttons she has now.

To calculate the area of the complex shape:

 ⇒ must separate the shape into simpler shape

Let's calculate:

            [tex]Area = 9*6+9*6=54+54=108[/tex]

             [tex]Area= 9*3=27[/tex]

             [tex]Area = \frac{1}{2}* 3*5.4+\frac{1}{2}* 3*5.4=8.1+8.1=16.2[/tex]

Total Area = [tex]108+27+16.2= 151.2[/tex]

Answer: 151.2 ft²

Hope that helps!