1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
aleksley [76]
3 years ago
12

Can someone check questions?

Mathematics
1 answer:
Soloha48 [4]3 years ago
6 0
1
The first one is correct. 

2
A hexagon has the weird property of having the radius and the side being of exactly the same length

The formula is A = 3 * sqrt(3) * a^2 / 2
where a = the side  or radius
A = 3 * sqrt(3) * 5^2 / 2
A = 3 * sqrt(3) * 25 / 2
A = 1.5 * sqrt(3) * 25
A = 64.95

A <<<< Answer (the first one is the answer.) 


C
This one seems so much more entailed. Do you know what the cos law is? That's what I will use to find c.

c^2 = a^2 + b^2 - 2*ab* cos(C)
C = 33 degrees
a = 2.75 miles
b = 1.32 miles

c^2 = 2.75^2 + 1.32^2 - 2 * 2.75 * 1.32 * cos(33)
c^2 = 9.3049 - 6.0887
c^2 = 3.2162
c = sqrt(3.2162) = 1.7934 

Now you have to use this result to get the area. You have to use Heron's formula.

A = sqrt(s * (s - a) * (s - b) * (s - c) )
s = 1/2 the perimeter
s = 1/2 (2.75 + 1.32 + 1.7934)
s = 1/2(5.8634)
s = 2.9317
I'll finish this in the comments. I have to leave for a bit.

You might be interested in
William has been contracted to paint a school classroom. The classroom is 20 m long, 15 m wide and 5 m high. There are four wind
valina [46]

Answer:

Step-by-step explanation:

l -> length

b -> width

h -> height

Find the area of four walls and ceiling. then subtract the area of four windows and a door form that area.

Area of four walls + <u>ceiling</u> = 2( lh + bh) +<u>lb</u>

 = 2*(20*5 + 15*5) + 20*15

= 2( 100 + 75) + 300

= 2* 175 + 300

= 350 +300

= 650 sq m

Area of window = 2 *3 = 6 sq.m

Area of four windows = 4*6 = 24 sq.m

Area of door = 2 * 1 =  2 sq.m

Area of four walls excluding 4 windows and door = 650 - 24 - 2 = 624 sq.m

Cost of painting = 624 * 6.50

                          = $ 4056

3 0
3 years ago
Read 2 more answers
2/3 divided by 2 1/2=????<br><br><br>in simplest form <br><br><br>ASAP PLEASE
8_murik_8 [283]

Answer:4/15

Step-by-step explanation:

Change the whole number into a fraction and divide both and you get 4/15 or get photomath with math problems works perfectly

4 0
3 years ago
Geoff paddles his canoe at an average speed of 3.5 miles per hour. After 5 hours of canoeing, Geoff has traveled 18 miles. Write
andriy [413]

Answer:

d(x) = 3.5x + 0.5

Step-by-step explanation:

3.5 x 5 = 17.5 which means the canoe began from a starting point of 0.5

7 0
2 years ago
X² + y² = 36<br> State the domain and range of the relation
meriva

Answer:

Domain: from -6 to 6, inclusive

Range: from -6 to 6, inclusive

Step-by-step explanation:

It's a circle centred at origin with radius 6

4 0
3 years ago
Read 2 more answers
Y= 7x - 19<br> y= 3x - 7<br><br> Solve for x and then use X to solve for y. (find x and y)
stepladder [879]

Answer:

(2,3)

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Other questions:
  • If i make 25,750 a month how much do i have at the end of the year?
    13·1 answer
  • What is m∠TVU?<br><br> m∠TVU = __°
    12·1 answer
  • Solve the inequality equation 1-4(7-6x)&lt;141
    9·1 answer
  • 6/8 = 30/___<br><br> what is the denominator for the 30 part
    14·2 answers
  • 3y+2x-4+5x+7<br> Simplify
    13·1 answer
  • I need help, please. I will try to give brainliest!!!
    13·1 answer
  • Eight candy bars cost $6.00. Caulatue the cost per candy bar​
    10·2 answers
  • How do you solve for x: 2x/3 = 3x/5 - 1 ???
    6·1 answer
  • Pls help me marking brainliest.
    6·1 answer
  • If the price of a textbook is $40 before tax is added on, and tax is 10%, what will the final price of the textbook be?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!