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
Usimov [2.4K]
3 years ago
5

What is the area of the black section?

Mathematics
1 answer:
NeX [460]3 years ago
7 0
You can split this up into 3 parts:

The large triangle with base 16cm and height 24.3cm has an area:
A = 1/2bh
A = 0.5x16x24.3
A = 194.4cm²

One of the other triangles with base 13.5cm and height 12cm has an area:
A = 0.5x12x13.5
A = 81cm²

The last triangle with base 13.5cm and height 5cm has an area:
A = 0.5x13.5x5
A = 33.75cm²

So you have 3 triangle areas. To get the black area, you subtract the two white triangles (in your picture) from the area of the large triangle that was first calculated above so:

Black area = 194.4 - 81 - 33.75 = 79.65cm²
That should be the area... I might have messed up on the basic multiplication, but that's the overall process.
You might be interested in
What is the rule for finding the coordinates of an image reflected over the line y=-x
joja [24]
You can find the coordinates of any graph by using a coordinate table, which looks as so in the chart provided below.

What you do is you, put in the letter x and then put what y is equal to in the second box. You plug in any number for x and you solve in order to find the y coordinate. Once you do, for example for plugging in -1 into x you get 1. So your coordinate would be (-1,1).

8 0
3 years ago
Read 2 more answers
Help please i have no idea how to do slope intercept form ​
OverLord2011 [107]

Answer:

y=x+4

Step-by-step explanation:

from the graph

7 0
2 years ago
Please need help on this
IrinaVladis [17]

The first statement is true.

The second statement is false.

The third statement is true.


4 0
3 years ago
Read 2 more answers
Jared has 2 dogs, spot and rover. spot weighs 75.25
SVEN [57.7K]
Where is the rest of the question?
7 0
3 years ago
Read 2 more answers
Find a polynomial with integer coefficients that satisfies the given conditions. R has degree 4 and zeros 3 − 3i and 2, with 2 a
dolphi86 [110]

Answer:

The required polynomial is P(x)=x^4-10x^3+46x^2-96x+72.

Step-by-step explanation:

If a polynomial has degree n and c_1,c_2,...,c_n are zeroes of the polynomial, then the polynomial is defined as

P(x)=a(x-c_1)(x-c_2)...(x-x_n)

It is given that the polynomial R has degree 4 and zeros 3 − 3i and 2. The multiplicity of zero 2 is 2.

According to complex conjugate theorem, if a+ib is zero of a polynomial, then its conjugate a-ib is also a zero of that polynomial.

Since 3-3i is zero, therefore 3+3i is also a zero.

Total zeroes of the polynomial are 4, i.e., 3-3i, 3_3i, 2,2. Let a=1, So, the required polynomial is

R(x)=(x-3+3i)(x-3-3i)(x-2)(x-2)

R(x)=((x-3)+3i)((x-3)-3i)(x-2)^2

R(x)=(x-3)^2-(3i)^2((x-3)-3i)(x-2)^2     [a^2-b^2=(a-b)(a+b)]

R(x)=(x^2-6x+9-9(i)^2((x-3)-3i)(x-2)^2

R(x)=(x^2-6x+18)(x^2-4x+4)                [i^2=-1]

R(x)=(x^2-6x+18)(x^2-4x+4)

R(x)=x^4-10x^3+46x^2-96x+72

Therefore the required polynomial is P(x)=x^4-10x^3+46x^2-96x+72.

3 0
3 years ago
Other questions:
  • A sequence has its first term equal to 4, and each term of the sequence is obtained by adding 2 to the previous term. If f(n) re
    7·1 answer
  • Lake City has a population of 3600 and is expected to grow by a factor of 1.3 every 10 years. Which is the best estimate of Lake
    14·1 answer
  • PLEASE PLEASE PLEASE HELP ME WITH THESE! Or I WILL FAIL!! PLEASE
    13·1 answer
  • Find the first six terms of the sequence.
    6·1 answer
  • Please help me with the following questions. Thanks in advance!!
    12·2 answers
  • What is the surface area equation in terms of height​
    8·2 answers
  • Which number sentence does the model represent?
    12·1 answer
  • How many times does 85 go into 221<br> Explain Thx!!
    8·2 answers
  • 3. When pasta is cooked, it doubles in weight. When Ms. Morrison finished cooking
    9·1 answer
  • Can someone explain this to me?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!