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3 years ago

Geometry help please !!! I need this for extra credit in school

Mathematics

1 answer:

marissa [1.9K]3 years ago

6 0

Answer:

I believe it is y = -3x + 2

Step-by-step explanation:

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If you were to randomly survey 50 people from the phone books of 20 randomly chosen cities, would this be a random sample? Why o

kotegsom [21]

Answer:

no.

Step-by-step explanation:

The survey has too small of a group to be random.

3 0

4 years ago

Read 2 more answers

2 Points<br> Which of the following best describes the algebraic expression 7(x +12) - 4 ?

Elena-2011 [213]

Step-by-step explanation:

7 (x+12) - 4

7x + 48 -4

7x + 44

6 0

4 years ago

6g + 1, for g = 0 i need it in a sentence

4vir4ik [10]

Answer:

6*0 +1 = 1

Step-by-step explanation:

if g equals 0 the answer is 1

5 0

4 years ago

The perimeter of the base of a regular quadrilateral prism is 60 cm, the area of one of the lateral faces is 105 cm2.

yawa3891 [41]

For a better understanding of the solution, please follow the diagram in the attached file.

A regular quadrilateral is basically a square.

So, if the base of the prism has a perimeter of 60 cm, then the length of the side of the square will be $\frac{60}{4}=15 cm$ . It is shown of the diagram.

Now, from the diagram, it is clear that the lateral face area, which is given as 105 cm^2, is the product of the side of the square, which is known, and the unknown height, let us call it h. Thus, we will get the following equation:

$15\times h=105$

$\therefore h=\frac{105}{15}=7 cm$

This is depicted on the diagram.

Now, all our required parameters are in place. Thus, let us find what has been asked.

<u>SURFACE AREA</u>

Surface Area (SA) will be the sum of the areas of the two bases (squares) and the areas of the four lateral faces.

Since the side of one square base is 15 cm, therefore, the area of one square base will be $15^2$ .

Likewise, the area of one lateral surface is actually the area of a rectangle with length 15 cm and height 7 cm. Thus, it's area will be given as: $15\times 7$ .

Thus, our equation will be:

$SA=2\times 15^2+4\times 15\times 7=870 cm^2$

Therefore, Surface Area=870 cm^2

<u>VOLUME OF THE PRISM</u>

The volume of the prism will simply be the area of the base times the height of the prism.

Thus, the volume is:

$Volume=15^2\times 7=1575 cm^3$

5 0

4 years ago

Can anyone help me please. will give you brainliest.

Alona [7]

<h3>Answer:</h3>

DE is not included, AAS
DF is included, ASA

<h3>Explanation:</h3>

An angle is identifiede by its vertex. A side is identified by the vertices it lies between. When the vertices are X and Y, the side that lies between (is included) is side XY.

1. The angle vertices are E and F, so the side included between them would be side EF. The named side, DE, is <em>not</em> included.

The postulate naming is pretty straightforward. Each A represents an angle, and each S represents a side. The sequence of letters matches the sequence of the parts of the geometry. Thus AAS refers to a pair of angles with the side being not between them, while ASA refers to a pair of angles with the side between.

When you have two angles and a not-included side, the postulate you must invoke is the AAS postulate.

2. The explanation of 1 pretty much covers it. Side DF is (included) between angles D and F, so the ASA postulate applies.

4 0

4 years ago