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
Juli2301 [7.4K]
3 years ago
7

Can someone help me in 3 pls

Mathematics
2 answers:
3241004551 [841]3 years ago
8 0
Rectangle + 2 x Sm. Triangles + lg. Triangle
In-s [12.5K]3 years ago
6 0

Answer:

B

Step-by-step explanation:

You might be interested in
Find the smallest perimeter and the dimensions for a rectangle with an area of 36 in^2
Tpy6a [65]
This is a square with area 36 in^2

So dimensions are 6 * 6 ins   and  perimeter = 24 ins.
3 0
3 years ago
What are the x– and y–intercepts of the graph of y = 2x^2 – 8x – 10?
Nadya [2.5K]
<u>x-intercepts are found by setting y=0</u>
y=2x^2-8x-10\rightarrow0=2x^2-8x-10
<em>factor out a 2</em> 0=2(x^2-4x-5)\rightarrow0=x^2-4x-5
<em />0=(x-5)(x+1) <em>roots should be </em>x=-1,5
therefore, x-intercepts are (-1,0) and (5,0)
<u>
</u><u>y-intercepts are found by setting x=0</u>
y=2x^2-8x-10\rightarrow y=2(0)^2-8(0)-10
\rightarrow y=0-0-10=-10
therefore, y-intercept is (0,-10)
4 0
3 years ago
The perimeter of a rectangle is 30.8 km and it’s diagonal length is 11 km. Find it’s length and width
blsea [12.9K]

Answer:

Length of the rectangle is 15.0325 km and width is 0.3765 km.

Explanation:

Given:

Perimeter of a rectangle = 30.8 km

Length of diagonal of rectangle = 11 km

To find:

The length and width of rectangle=?

Solution:

Lets assume length of the rectangle = x km

And assume width of the rectangle = y km

Lets first create equation using given  perimeter

perimeter of rectangle = 2 ( length +  width )

=> 30.8 km = 2 ( x + y )  

=>x + y = \frac{30.8}{2}

=> y = 15.4 – x             ------(1)

As diagonal and two sides of rectangle forms right angle triangle whose hypoteneus is diagonal ,  

=> length^2 + width^2 = diagonal^2

=> x^2 + y^2 = 11^2

=> x^2 + y^2 = 121

On substituting value of y from (1) in above equation we get

=> x^2 + (15.4-x)^2 = 121

=>x^2 + (15.4)^2 + x^2 – 2 x 15.4 \times x   = 121

=> 2x^2-30.8x + 237.16 -121  = 0

=> 2x^2-30.8x + 116.16 = 0

Solving above quadratic equation using quadratic formula

General form of quadratic equation is  

ax^2 +bx +c = 0

And quadratic formula for getting roots of quadratic equation is  

x= \frac{ -b\pm\sqrt{(b^2-4ac)}}{2a}

As equation is 2x^2-30.8x + 116.16 = 0, in our case

a = 2 ,  b = -30.8 and c = 116.16

Calculating roots of the equation we get

x=\frac{ -(-30.8)\pm\sqrt{(-30.8)^2-4(2)( 11)} } {(2\times2)}

x=\frac{30.8\pm\sqrt{(948.64-88)}}{4}

x=\frac{30.8\pm\sqrt{860.64}}{4}

x=\frac{30.8\pm\sqrt{860.64}}{4}

x=\frac{(30.8\pm29.33)}4

x=\frac{(30.8+29.33)}{4}

x=\frac{(30.8-29.33)}{4}

=> x = 15.0325 or x = 0.3675

As generally length is longer one ,  

So x = 1.0325

From equation (1) y = 15.4 – x = 0.3765

Hence length of the rectangle is 15.0325 km and width is 0.3765 km.

6 0
3 years ago
You just started working for a company, where should you first look to find a confidentiality policy concerning the information
olasank [31]
It would be D because ur an employee and u need a handbook to see what ur handelling
4 0
3 years ago
What is the slope of this line?
nataly862011 [7]

Answer: -\frac{8}{5}

Remember: RISE/RUN (y/x). Lines that are increasing have a positive slope, and lines that are decreasing have a negative slope.

You can find the slope in two ways:

1. Useful if the line is graphed: count the units between 2 points on the line.

  • Let's use the points (-1, 4) and (4, -4).
  • (-1, 4) is 8 units higher than (4, -4) and 5 units to the left of (4, -4).
  • Because the line is decreasing, the slope is negative.
  • Therefore, the slope is -\frac{8}{5}.

2. Useful if the line is not graphed: find the difference between the y-coordinate values divided by the difference of the x-coordinate values.

  • Let's use the points (-1, 4) and (4, -4).
  • \frac{-4 - 4}{4 - (-1)} = \frac{-8}{5}
  • Therefore, the slope is -\frac{8}{5}.
4 0
3 years ago
Read 2 more answers
Other questions:
  • PLEASE HELP!!!!!!!!!!!! julie wants to buy a pair of boots for $54.67 she is a size 8 1/2 medium in regular shoes what size shou
    7·1 answer
  • A pack of six cans of coffe cost $12. How much would 15 cans of coffe cost?
    5·1 answer
  • All computers are on sale for 10% off the original price.If x is the original price of the computer,then the function that repre
    5·1 answer
  • I will give you that Brainly thing if it’s right plzz
    12·2 answers
  • Find the real number root
    5·1 answer
  • An international organization is investigating the relationship between the life expectancies of men and women in nonindustriali
    12·1 answer
  • (20,-8); 7x - 4y = -5
    7·1 answer
  • Devante has a lunch account in the school cafeteria. His starting balance at the beginning of the month in $35.50. The first wee
    14·1 answer
  • A wildlife biologist catches, tags, and then releases a number of wasps. Later she catches 55 wasps and finds that 7% are tagged
    11·1 answer
  • Heike runs 800 meters every day. After 9 days, how many kilometers have Heike run?<br> please help.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!