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]
3 years ago
10

Pls help due in 10 mins

Mathematics
1 answer:
nikitadnepr [17]3 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
Write a simplified expression for the
Simora [160]

Answer: 3.75 + - 7

Step-by-step explanation:

1.5x - 3 + 1.5x - 3 + 0.75x - 1

1.5x + 1.5x + 0.75x - 3 + - 3 + - 1

3.75x + - 7

3 0
3 years ago
Solve 3x2 + 4x = −5.
erastova [34]

Answer:


Step-by-step exExplanation:

Solve:

3

x

2

−

4

x

−

5

=

0

is a quadratic equation in standard form:

a

x

2

+

b

x

+

c

,

where:

a

=

3

,  

b

=

−

4

,  

c

=

−

5

Quadratic formula

x

=

−

b

±

√

b

2

−

4

a

c

2

a

Plug in the known values.

x

=

−

(

−

4

)

±

√

(

−

4

)

2

−

4

⋅

3

⋅

−

5

2

⋅

3

Simplify.

x

=

4

±

√

76

6

Prime factorize  

76

.

x

=

4

±

√

2

2

×

19

6

Apply rule:  

√

a

2

=

a

x

=

4

±

2

√

19

6

Simplify.

x

=

2

±

√

19

3

Solutions for  

x

.

x

=

2

+

√

19

3

,

 

2

−

√

19

3

Related questions

How do you know how many solutions  

2

x

2

+

5

x

−

7

=

0

has?

What is the Quadratic Formula?

planation:


3 0
3 years ago
Read 2 more answers
There are 12 and in a class. What is the largestnumber of groups they can besplit into and have the samenumber of boys and girls
liq [111]
There will be 2 groups, and each group have 6girls and 9 boys.
12 ÷ 2 = 6
18 ÷ 2 = 9
4 0
2 years ago
Read 2 more answers
How do you change 20.25 into a fraction
bearhunter [10]

Answer:

81/4

Step-by-step explanation:

I know this because I did this before

7 0
3 years ago
Read 2 more answers
I have 1 hundreds, 4 ones, 2 tens, and 1 tenths. What number am I?
DaniilM [7]
Since it reads 1 hundreds, that means 100. 4 ones mean 4 * 1, which is 4. 2 tens means 2 * 10, which is 20. Add those together and you get 124. Where it reads "1 tenth", that means 0.1
Therefore, the number is 124.1 
6 0
3 years ago
Other questions:
  • Look at the pic to awnser the question plz
    9·2 answers
  • 2 times the quantity 3 times c plus 9
    15·1 answer
  • What is the slope of 3,4 and 0.5
    5·1 answer
  • Who wants brainiest plz be new only
    8·2 answers
  • How many gallons of a 80​% antifreeze solution must be mixed with 100 gallons of 25​% antifreeze to get a mixture that is 70​% ​
    15·2 answers
  • Rewrite in simplest terms: 4 (d+9) -8 (-3d-3)
    12·1 answer
  • What is the value of x given in the following image?
    9·2 answers
  • O carro da Vivi faz 500 km com um tanque de capacidade igual a 40 litros de combustível. Considerando esse consumo, quanto Vivi
    15·1 answer
  • WILL MAKE BRAINLIEST Determine the value of x<br><br>a) 7.8<br><br>b) 4.62<br><br>c)6<br>d) 0.22​
    7·1 answer
  • 4 1/2 x 5 Multiply and answer with a mixed number in the simplest form.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!