PLEASE HELP, 40 POINTS!!!!!!!!!!!!!!!!!!!
Remember that in Cynthia's physics class, she must turn in four lab reports. For each report, she earns extra credit if her percent error is less than 5%.
For her second lab report, she calculated the height of a building four times. She got the following four heights.

6.8 m
7.5 m
8.1 m
7.8 m
The true height of the building is 7 m.

What was Cynthia's percent error?

Remember: Take the average of the three measurements before calculating the percent error.

Answer:

-21

Step-by-step explanation:

Each of those lines is -3
If you look at the -10, it goes down 2 lines and goes to -16 meaning that if it only went down one line it would only go to -13

Showing that each line is worth -3

It goes down 2 lines from -16 (-6)

so if you go down 6 from -16 that would get you to -21

The answer is: -18

That is because, on the number line, they already have 2 numbers. They are -10 to -16. To go from -10 to -16, you subtract 2. Since the mark is the same distance away as -10 to -16 on this number line, you would subtract  2 from -16, which would be -18.

The geometric mean of 8 and 253 is;

According to the question;

The geometric mean of a two numbers is the square root the product of the he numbers.

Hence, in this scenario;

The geometric mean of 8 and 253 is;

G.M = 45.

Ultimately, the geometric mean of 8 and 253 is approximately 45.

Read more on geometric mean;

https://brainly.com/question/23483761

Answer:

[tex]\boxed{-3\left(\sqrt{2}-1\right)}[/tex]

Step-by-step explanation:

[tex]\left(3\sqrt{3-2\sqrt{2}}\right)\left(\sqrt{3}-2\right)\left(\sqrt{3}+2\right)[/tex]

[tex]-3\sqrt{3-2\sqrt{2}}\left(-1\right)[/tex]

[tex]-3\sqrt{3-2\sqrt{2}}[/tex]

[tex]-3\left(\sqrt{2}-1\right)[/tex]

[tex]-3\left(\sqrt{2}-1\right)[/tex]

Answer:

Step-by-step explanation:

[tex](a + b)(a -b) = a^{2}-b^{2}\\\\\\a = \sqrt{3} \ & \ b = 2\\\\(\sqrt{3}-2)(\sqrt{3}+2)=(\sqrt{3})^{2}-2^{2} \\\\ = 3 - 4\\\\= -1[/tex]

[tex](3\sqrt{3-2\sqrt{2}})(\sqrt{3}-2)(\sqrt{3}+2)=(3\sqrt{3-2\sqrt{2}})*(-1)\\ \ = (-3)\sqrt{3-2\sqrt{2}}[/tex]

Answer:

Step-by-step explanation:

I would challenge the inference since we are given the information that there are 6 blue marbles in a 20 marble jar. Picking up 3 blue marbles doesn't guarantee that the rest of the marble are blue

Answer:

I couldn't find a graph with the shape, so I had to use points, sorry.

To reflect a shape, reverse its direction up or down and put it on the same points, positive or negative, accordingly. Reflections usually represent a function.

Answer:

First: 3x^25/y^12 z^7

Second: x^6 z^12/6

Step-by-step explanation:

Answer:

see image

Step-by-step explanation:

Answer:

Can you delete an answer

Answer:

Yes. This is correct.

Step-by-step explanation:

We can use an online graphing program and we see that your equation is correct! Good job!

Answer:

[tex]6x - 8y - 5x + 3y \\ (6x - 5x) + ( - 8y + 3y) \\ = x - 5y[/tex]

Answer:

Step-by-step explanation:

4x-2=3x

4x-3x=2

x=2

Answer:

D. 6

Step-by-step explanation:

As the two base angles are equal, this implies that this is an isosceles triangle.  This means that the sides opposite the base angles are also equal.

Therefore, AB = BC

⇒ 3x = 4x - 2

⇒ x = 2

If x = 2, then AB = 3 · 2 = 6

The volume of cup A is 1570.8 cm³ while the volume of cup B is 6283 cm³

Volume is the amount of space occupied by a three dimensional object or figure.

The cup has the shape of a cylinder, the volume is:

Volume = π * radius² * height

For cup A:

Volume = π * (10/2)² * 20 = 1570.8 cm³

Let each punch be 1 cm³, the number of cups needed = 1570.8 cm³ / 1 cm³ = 1571

For cup B:

Volume = π * (20/2)² * 20 = 6283 cm³

Let each punch be 1 cm³, the number of cups needed = 6283 cm³ / 1 cm³ = 6283

The volume of cup A is 1570.8 cm³ while the volume of cup B is 6283 cm³

Find out more on Volume at: https://brainly.com/question/1972490

Considering the given angle and the given formula, it is found that the percentage error for an angle of 0.02 radians is of 0.0067%.

For an angle [tex]\theta[/tex], it is given by the following formula:

[tex]P = 100\frac{|\sin{\theta} - \theta|}{\sin{\theta}}[/tex]

In this problem, the angle is of [tex]\theta = 0.02[/tex], hence:

[tex]P = 100\frac{|\sin{0.02} - 0.02|}{\sin{0.02}}[/tex]

[tex]P = 0.0067[/tex]

The percentage error for an angle of 0.02 radians is of 0.0067%.

More can be learned about percent error at https://brainly.com/question/25224978

Answer:

9(x+7)

Distribute the 9 by multiplying it to x and 7

9x+63

The area of the extension is 63.

The gardener added 9 and 7 instead of multiplying.

the image has the answers do you need me to explain how i did it?

Answer:

209 units

Step-by-step explanation:

36 + 38 + 65 + 70

Answer:

14.4 cm

Step-by-step explanation:

hmm the answer is 45.cm because

Answer:

x = 123.6°

Step-by-step explanation:

Subdivide the trapezium into a rectangle and triangle.

The triangle is a right triangle with hypotenuse CD and height 12.5cm.

The base of the triangle is 24.3 - 16 = 8.3 cm

To find angle D, use the tan trig ratio:

[tex]tan(\theta)=\dfrac{O}{A}[/tex]  where [tex]\theta[/tex] is the angle, O is the side opposite the angle A is the side adjacent the angle.

Therefore, for the right triangle:

[tex]\tan(\theta)=\dfrac{12.5}{8.3} \implies \theta=56.41583952... \textdegree[/tex]

In a quadrilateral, the sum of the angles between the parallel lines is 180°.  Therefore, m∠C + m∠D = 180°

⇒ x + 56.41573952... = 180

⇒ x = 180 - 56.41573952...

⇒ x = 123.6° (1 dp)

Alternatively, calculate angle C of the right triangle and add it to 90° to find x.

Answer:

Wouldn't the answer just be 30 degrees?

Answer:

150 degrees

Step-by-step explanation:

150 degrees

Remember, the bigger the angle, the bigger the degree.

Hope this helps!

either contradiction or not a linear equation

Answer:

2(3y+4)(x2−5)

Step-by-step explanation:

Add and subtract the second term to the expression and factor by grouping.

2(3y+4)(x2−5)

Answer:

2(3y + 4) (x^2 - 5)

Step-by-step explanation:

Add and subtract the second term to the expression and factor by grouping.

Answer:

175/48 or 3.64

Step-by-step explanation:

■ Refer to the attachment.

Hope it helps ⚜

Answer:

27

Step-by-step explanation:

the picture below is your work!

Answer:

this might be we wrong but 20

Answer:

Roughly 1.46 repeating

Step-by-step explanation:

Substitute the 5280 for the miles and there are 3600 seconds in an hour. divide 5280 by 3600 and it will give you a decimal.

Answer:

Step-by-step explanation:

Use the formula for area of a circle

A = [tex]\pi r^{2}[/tex]

The diameter is 8ft, if there was only a line from the middle to the edge of the circle, then it would be radius

The radius is half the diameter so divide 8 by two and you get the radius

Plug in the radius into the formula

A = [tex](4ft)^{2} \pi[/tex]

the parenthesis indicate you aren't only squaring the ft, but also the 4

4ft * 4ft = 16[tex]ft^{2}[/tex]

(remember you are also multiplying the unit, in this case feet)

A = [tex]16ft^{2} \pi[/tex]

there aren't parenthesis here, meaning you aren't squaring the 16

A = 50.24[tex]ft^{2}[/tex]

Solution:

We know that:

Finding the radius of the cylindrical water tank:

[tex]\rightarrow Diameter = 2(Radius)[/tex]

[tex]\rightarrow Radius = \frac{Diameter}{2} = \frac{12}{2} = 6 \ feet[/tex]

Now, let's find the volume of the cylinder by substituting the radius.

Finding the volume of the cylinder:

[tex]\rightarrow \tex V \tex o \tex l \tex u \tex m \tex e\tex \ \tex of \tex \ c \tex y \tex l \tex i \tex n \tex d \tex e \tex r = \pi r^{2} h[/tex]

[tex]\rightarrow \tex V \tex o \tex l \tex u \tex m \tex e\tex \ \tex of \tex \ c \tex y \tex l \tex i \tex n \tex d \tex e \tex r = (3.14)( 6^{2})( 17)[/tex]

[tex]\rightarrow \tex V \tex o \tex l \tex u \tex m \tex e\tex \ \tex of \tex \ c \tex y \tex l \tex i \tex n \tex d \tex e \tex r = (3.14)( 36)( 17)[/tex]

[tex]\rightarrow \tex V \tex o \tex l \tex u \tex m \tex e\tex \ \tex of \tex \ c \tex y \tex l \tex i \tex n \tex d \tex e \tex r = 1921.68 \ feet^{3}[/tex]

Rounding to the nearest whole number:

[tex]\rightarrow \tex V \tex o \tex l \tex u \tex m \tex e\tex \ \tex of \tex \ c \tex y \tex l \tex i \tex n \tex d \tex e \tex r = 1921.68 \ feet^{3}[/tex]

[tex]\rightarrow \tex V \tex o \tex l \tex u \tex m \tex e\tex \ \tex of \tex \ c \tex y \tex l \tex i \tex n \tex d \tex e \tex r = 1922 \ feet^{3} \ (Rounded \ to \ nearest \ whole \ number)[/tex]  

Thus, the volume of the cylinder is 1922 feet³ (Rounded).

[tex]\\ \rm\rightarrowtail V=\pi r^2h[/tex]

[tex]\\ \rm\rightarrowtail V=\pi (6)^2(17)[/tex]

[tex]\\ \rm\rightarrowtail V=36(17)\pi [/tex]

[tex]\\ \rm\rightarrowtail V=612\pi[/tex]

[tex]\\ \rm\rightarrowtail V=1921.68ft^3[/tex]

Hope it helps you!!

Feel free to ask any doubts :))

Answer:

t=2

Step-by-step explanation:

u subtract 7 from 15 equals 8.

4t=8

divide 4 from 4t and 8

leaves t by it selfs and 8/4=2

t=2