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
jasenka [17]
3 years ago
9

PLEASE HELPPP!!!!!!!!!!!!!

Mathematics
1 answer:
Leto [7]3 years ago
7 0

For this case we have:

Question 1:

According to Heron's formula, the area of ​​a triangle is given by:

A=\sqrt{(s(s-a)(s-b)(s-c))}

Where a, b and c are the sides of the triangle and s is the semi-perimeter of the triangle given by:

s=\frac{(a+b+c)}{2}

Let:

a = 20mm\\b = 23mm\\c = 27mm

We have s:

s=\frac{(20+23+27)}{2}\\s=\frac{70}{2}\\s=35

Substituting in the formula of the area:

A=\sqrt{(35(35-20)(35-23)(35-27))}\\A=\sqrt{(35(15)(12)(8))}\\A=\sqrt{(50400)}\\A=224.5mm^2

Thus, the area of ​​the triangle is A = 224.5mm ^ 2

Answer:

A = 224.5mm ^ 2

Question 2:

The area of ​​a traingule can be expressed as:

A=\frac{(b*h)}{2}

Where:

b: Base of the triangle

h: Triangle height

Let:

b = 20m\\h = 18m

Substituting the values ​​in the expression we have:

A=\frac{(20*18)}{2}\\A=\frac{360}{2}\\A=180m^2

Thus, the area of ​​the triangle is A = 180m ^ 2

Answer:

A = 180m ^ 2

Question 3:

It is known that the area of ​​a rectangle is given by:

A = l * w

Where:

l: It is the length of the rectangle

w: It is the width of the rectangle

So:

l = 9 feet\\w = 8 feet

Substituting:

A = (9 * 8) feet ^ 2\\A = 72 feet ^ 2

Thus, the area of ​​Laura's carpet is given by A = 72 feet ^ 2

Answer:

A = 72 feet ^ 2

Question 4:

We must take out the area of ​​the outer wall, given by a rectangle, then:

A = l * a

Where:

l: It is the length of the rectangle

a: It is the height of the rectangle

We have:

l = 48 feet\\a = 9 feet

Substituting in the formula we have:

A = (48 * 9) feet ^ 2\\A = 432ft ^ 2

Thus, the area of ​​the exterior wall is given by: A = 432 feet ^ 2

432ft ^ 2> 400ft ^ 2

So, a can of paint is not enough to cover the exterior wall.

Answer:

A can of paint is not enough to cover the exterior wall.

Question 5:

A regular hexagon is formed by 6 equal triangles. The area of ​​the hexagon is given by:

A=\frac{(perimeter* apothem)}{2}

Where the perimeter is given by the sum of the sides, that is:

perimeter = (10 + 10 + 10 + 10 + 10 + 10) cm\\perimeter = 60cm

And the apothem is the height of each of the triangles that make up the hexagon, that is:

apothem = 5cm

Substituting in the formula:

A=\frac{(60*5)}{2}\\A=\frac{300}{2}\\A=150cm^2

Thus, the area of ​​the hexagon is A = 150cm ^ 2

Answer:

A = 150cm ^ 2


You might be interested in
HELP PLEASE WHICH ONE IS CORRECT?
r-ruslan [8.4K]

I got chu UwU, the answer is B cause it is smaller

7 0
3 years ago
Helppppp pleaseeeee fasttttt thankkkkk youuuuu
Digiron [165]
Pretty sure it is nine. I hope I helped
8 0
3 years ago
A swimming coach needs to choose a team for a relay race. The coach must select 4 of 6 available swimmers
Trava [24]

The number of unique ways is given by the number of possible

combination having distinct members.

The number of unique ways there are to arrange 4 of the 6 swimmers are <u>15 ways</u>.

Reasons:

The given parameters are;

The number of swimmers available = 6 swimmers

The number of swimmers the coach must select = 4 swimmers

Required:

The number of unique ways to arrange 4 of the 6 swimmers.

Solution:

The number of possible combination of swimmers is given as follows;

_4C_6 = \dfrac{6!}{4! \times (6 - 4)!}  = 15

Therefore, the coach can select 4 of the 6 available swimmers in <u>15 unique ways</u>

Learn more here:

brainly.com/question/23589217

8 0
2 years ago
Terms written in the form a/b are fractions. For example 2/3. If you see 3 1/2 it should be 3 and 1/2
aliina [53]

Answer:

7/2??

Step-by-step explanation:

Im not sure what you mean but 3 1/2 is the same thing as 7/2

5 0
3 years ago
On a piece of paper, graph y≥ x - 1. Then determine which answer choice
zhannawk [14.2K]

Based on the given inequality of y≥ x - 1, the graph that matches it best is C. Graph A.

<h3>How are inequalities graphed?</h3>

When graphing an inequality with the "greater or equal" and "less or equal" signs, the line will be a steady line as shown by graphs A and B.

If y is the larger or equal variable, the shaded area will be to the left of the line.

The inequality is y≥ x - 1 which means that the line should be steady and the shading should be on the left of the line. Graph A is therefore the correct graph.

Find out more on graphing inequalities at brainly.com/question/11234618.

#SPJ1

3 0
2 years ago
Other questions:
  • A(y+c) =b(y-c) solve for y
    12·1 answer
  • Y=3x compare parent function y=x
    12·1 answer
  • HELP WITH PART C‼️Any questions ask
    11·1 answer
  • Which statement about this figure is true?
    14·1 answer
  • 1+ 2/5 × 4/5 ÷ 1/2( these are fractions btw)
    8·2 answers
  • Please help, i will give brainliest, i am struggling badly.
    5·1 answer
  • Combine like terms in the expression -4x+7x-2y+7y​
    11·1 answer
  • It is reported that 50% of all computer chips produced are defective. Inspec- tion ensures that only 5% of the chips legally mar
    9·1 answer
  • ✓<br> What is the value of the expression below?<br> -8+ 9+8<br> 0<br> 11<br> 19<br> 35
    13·1 answer
  • 11
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!