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
natima [27]
3 years ago
15

Can someone please answers these questions

Mathematics
1 answer:
Zarrin [17]3 years ago
5 0
Try this option (<u>not for all the tasks!</u>):
1) rule for n-angle is: S=180°(n-2), where n - number of the sides. S₁₅=180*13=2340°;
2) S₂₅=180*23=4140°;
4) this is deltoid;
5) this is paralelogram;
6) x=130°; y=50°;
10) x=90°; y=30° (it is deltoid);
12) not enough info for parallelogram (the same for deltoid);
14) it is enough: according to a property of a parallelogram (it means that a square and rombus are parallelograms);
15) it is enough according to the properties of parallelograms;
16) x=2; y=1;
18) poit S(0;0); point T(b+c;d). The coordinates of the midpoint are (0.5b+0.5c;0.5d); slope=arctg(d/(b+c)).
You might be interested in
How to solve<br><br> 3sin^2x= cos^2x
DochEvi [55]

I'll try it.
I just went through this twice on scratch paper.  The first time was to
see if I could do it, and the second time was because the first result
I got was ridiculous.  But I think I got it.

You said                                                 <span><u>3sin²(x) = cos²(x)</u>

Use this trig identity:  sin²(x) = 1 - cos²(x)   

                                   Plug it into the original equation for (x).

                                                     3(1 - cos²(x) )  =  cos²(x)

Remove parentheses on the left:    3 - 3cos²(x)  =  cos²(x)

Add  3cos²(x)  to each side:            3                  =  4cos²(x)

Divide each side by  4 :                  3/4  =  cos²(x)

Take the square root of each side:    <em>cos(x) = (√3) / 2</em> .

There it is ... the cosine of the unknown angle.
Now you just go look it up in a book with a table cosines,
or else pinch it through your computer or your calculator,
or else just remember that you've learned that

                           cos( <em><u>30°</u></em> )  =  </span><span><span>(√3) / 2 </span>.


</span>
7 0
3 years ago
Please help quickly (math)
MrMuchimi

Answer:

  • We are asked for the angle of the translated figure ACB prime
  • When asked in that manner they want "C'"
  • Hence A'C'B'= 46 degree
5 0
2 years ago
PLZZ Help me algebra 2.
Kipish [7]

Answer:

32

Step-by-step explanation:

7 0
2 years ago
Quadrilateral LMNO is a rectangle. Find MN.
Cloud [144]
(4x-1)=(5x-8)
x=7

4(7)-1= 27

5(7)-8= 27

So the answer is 27

<span>MN = 27</span>

3 0
3 years ago
Read 2 more answers
Help with this math question please
Cloud [144]
A = P( 1 + rt)
A/P = 1 + rt
A/P - 1 = rt
t = (( A/P)) - 1)/r


t = (( 5500/1000) - 1)/(6.25/100
t = (5.5 - 1)/0.0625
t = 4.5/0.0625 = 72 years


Answer it will  take 72 Years...



Hope it helps!!!!!
4 0
3 years ago
Read 2 more answers
Other questions:
  • What is the value of Fraction 1/2 x3 + 3.4y when x = 3 and y = 4?
    13·1 answer
  • What is the value of x? Assume that the line is tangent to the circle.
    6·2 answers
  • Plz help with this asap thanks
    7·1 answer
  • How to do math about ÷​
    8·1 answer
  • The difference of x and a number is 6. What is the other number?
    9·1 answer
  • Type the missing numbers in this sequence:<br><br> 67,<br><br> 79,<br> 85,<br> 91
    5·2 answers
  • If the slope and length of XY are mand /
    7·1 answer
  • A box of toy cars contains blue, orange, yellow, red, and black
    9·1 answer
  • Here it is help me pls
    7·1 answer
  • GIVING BRAINLIEST IF THE ANSWER IS RIGHT PLS HELP!!!!
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!