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
salantis [7]
2 years ago
10

Pls help due in 10 mins

Mathematics
1 answer:
nikitadnepr [17]2 years ago
8 0

Answer:

Area = 97.4 cm²

Step-by-step explanation:

a = 15 cm

        Area = \frac{ \sqrt 3}{4} a^2\\

                 =\frac{\sqrt 3}{ 4 } \times 15^2\\\\=\frac{\sqrt 3}{ 4 } \times 225\\\\= 97.4 \ cm^2

You might be interested in
I’m confused on what’s going on here, so if someone could explain it I would be super grateful.
pshichka [43]
<h2>Range of x </h2><h3>-\frac{1}{5} and x>6</h3><h3>Step-by-step explanation:</h3>

Given AB = 4x + 5, BC = 3x - 2 and AC 9x -5

The sum of the length of any two sides of a triangle is greater than the length of third side.

Case I

AB + BC > AC

⇔4x +5 +3x -2 > 9x -5

⇔7x + 3 >9x - 5

⇔ 7x -9x > -5 -3

⇔-2x > -8

⇔x <4

Case II

if AB+AC > BC

4x +5 +9x -5> 3x -2

⇔13x >3x -2

⇔ 13x -3x> -2

⇔10x > -2

⇔x >-\frac{1}{5}

Case III

AC+BC > AB

⇔9x - 5 +3x - 2 > 4x +5

⇔6x -7 > 4x +5

⇔6x -4x >5+7

⇔2x > 12

⇔x > 6

8 0
3 years ago
What are 2 numbers that adds to 9 and multiplies to 14?
Anettt [7]
The answer is 7 and 2
4 0
3 years ago
Simplify (7x) - (-2x).<br> O 5x<br> 0 -5x<br> O 9x<br> 0-9x<br> NEXT QUESTION<br> 2<br> ASK FOR UEL
marysya [2.9K]

Answer:

9x

Step-by-step explanation:

Since you are subtracting a negative from a positive you would get 9

3 0
3 years ago
HELPPP <br> If Julie makes $20,000 a year, how much will she make in a day?
NNADVOKAT [17]
I’m not sure I would help you if knew
7 0
2 years ago
Eighth grade ) T.5 Pythagorean theorem: word problems 87U
Komok [63]

Answer:

The tree is 12 feet tall

Step-by-step explanation:

Let a represent the length of where the bird was sitting to the oak tree

let b represent the height of the tree

let c represent the length at which the bird flew

by pythagoras theorem

c²=a²+b²

b²=c²-a²

b =  \sqrt{ {c}^{2} -  {a}^{2}  }

subtitute in the values

b =  \sqrt{ {15}^{2} -  {9}^{2}  }

b =  \sqrt{225 - 81}

b =  \sqrt{144}

b = 12

7 0
2 years ago
Other questions:
  • Write the rule for the nth term of the sequence. Then find a11-3.5, 3, 2.5, 2, 1.5, ...
    8·1 answer
  • What is the gcf of 120 and 220
    7·1 answer
  • One number is five times another number. Their sum is 42. What are the two numbers?
    11·2 answers
  • Emily measures a prize wheel at a carnival and calculates that it has an area of 3.14 square feet. What is the prize wheel's cir
    14·1 answer
  • Which term describes a fraction that has a variable or variable expression in its numerator, its denominator, or both?. . A.Vari
    14·2 answers
  • Is 2.45455 irrational or rarional?
    5·2 answers
  • Algebra 1 help please<br> Picture included and will pick a brainliest answer. <br> Thanks in advance
    15·1 answer
  • At camp today, kids can choose art, swimming, or music. Of those activities, 40 kids choose swimming, 16 choose art, and 24 choo
    8·2 answers
  • The circumference of a circle is defined to be the _________.
    7·2 answers
  • Which rectangular prism has a volume equal to the expression 6 * 3 * 4?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!