Would any one please help me with this? My mom made a review thing for me to prepare for my midterm and I can't figure this one problem out. If someone could walk me through this I would be eternally grateful!
Zebruh avatar

Answers

Answer 1
Answer:
I ran into this same problem here on Brainly a couple of
weeks ago.  Only the drawing was posted, without asking
a question.  This one has some words with it, but it's not much
better than the other one was.

When you read it carefully, you can see blanks where there's
supposed to be something more written:

WHAT is equal to 3x + 9 ?

WHAT is equal to 8x + 11 ?

WHAT is equal to 5x - 8 ?

Find the  measures of WHAT, WHAT, and WHAT ?

You can't do a thing with this as it is.  It doesn't tell you
anything that you can work with.


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I'm stuck on both of these questions. Any answer will be better than what I got. Please include brief explanation :)
Katrina is building a deck. She cuts 3 lengths of wood from a 72-inch board. The first length is 30 3/4 inches. The second length is 12 1/4 inches. And the third length is 16 1/4 inches. How much of the original board remains after Katrina makes her cuts?
Sum of two digit number is9.When we interchange the digits it is found that the resulting new number becomes twice the other number. What are the numbers
What should be done to solve the following equation? d-8=9 A. Subtract 8 from both sides B. Add 8 to both sides C. add 9 D. subtract 9 from both sides

Let n = 21. What is the value of n + 10?

A.
10

B.
11

C.
21

D.
31

Answers

the answer is D.31 because 21+10=31


hope i helped

Answer:

d just know it bc i did this

Step-by-step explanation:

Describe how the formulas for a cone, cylinder and pyramid are derived. What are the similarities between the volume of a cone and pyramid?

Answers

the similarities

Vcylinder=hpir^2
Vcone=(1/3)hpir^2

Vpyramid=(1/3)hlw

notice that the cylinder has a circle base and circle top
cone tapers
when that happens, the cone is 1/3 of the whole

so the pyrmid is 1/3 the volume of a shape with same base area and same height

What does the law of cosines reduce to when dealing with a right triangle? A. The Pythagorean theorem B. The formula for a triangle's area C. The law of sines D. The formula for a triangle's area

Answers

Cosine law formula is:

a^(2) = b^(2) +  c^(2)  - 2*b*c*cos(A)

where A is an angle opposite from side a.
If angle a is 90 degrees that means that cos(90) is 0 which leaves us with
a^(2) = b^(2)  + c^(2)

This is Pythagoras theorem where a is the hypothesis and b and c are smaller sides of triangle

Answer is A)

In a triangle the base is 4 inches and the height is 6 inches. Find the area.12 in.²
12√3 in.²
24 in.²

Answers

The answer is 12 in.²
A = (1/2)(b)(h)
A = (1/2)(4 in)(6 in)
A = 12 in^2

In 2000, a total of 531,285 live births were recorded in state of California. In 2006, the total number of live births rose to 562,157. What is the % increase of live births for the 6-year period from 2000 to 2006, to the nearest thousands

Answers

percent increase
find increase
then divided that by original

562157+531285=30872=increase

now put that over original
30872/531285=0.05810817/1
percent means partst out of 100
make bottom number 100
0.05810817/1 times 100/100=5.810817/100=5.810817%
thousanth
5.811%



If there are 12 people sitting at a round table , how many different pairs of people can have conversations during dinner, assuming the can all talk to each other? What geometric figure can you use t model this situation?

Answers

Answer:

Step-by-step explanation:

Given that there are 12 people sitting around at a table.

We see that any two persons can have conversations.  If we count A with B as one conversation this is the same as B with A

i.e. order does not matter

So here we have to use combinations.

2 people out of 12 where order does not matter can be done in 12C2 ways

No of conversations = 12C2\n= (12!)/(2!10!) \n=66

If we use a dodedecon as a geometrical figure with 12 vertices representing 12 persons the conversation between pairs can be associated with all diagonals and sides connecting two vertices.

Sides are 12 and diagonals are 54 totalling 66.

66 different pairs. Use a dodecagon showing sides and angles
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