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
Oxana [17]
3 years ago
7

Please help!! I will make you brainlest.

Mathematics
2 answers:
-BARSIC- [3]3 years ago
5 0

Answer:

Question 9: x = 15\sqrt{3}, Question 10: y = 15\sqrt{3}, Question 11: x = 14\sqrt{3}, Question 12: y = 21

Step-by-step explanation:

Question 9-10: Right triangles with 45°, 45°, 90° have a special rule, the legs of the triangle are equal, so x = y. Now you can form the statement 2x^2 = 1350, and because x = 15\sqrt{3}, so does y.

Question 11-12: Right triangles with 30°, 60°, 90° also have a special rule, the side corresponding to 30° is half the length of the hypotenuse and the side corresponding to 60° is \sqrt{3} times as great as the 60°. x is 2 times as big as 7\sqrt{3}, so its length is 14\sqrt{3}. Y is \sqrt{3} as great as 7\sqrt{3}, so its length is 21.

Strike441 [17]3 years ago
4 0

Answer:

Step-by-step explanation:

These problems are based on triangle ratios. You cannot use the Pythagorean theorem to solve them.

The first triangle is a 45 45 90 degree triangle (I'm talking about the angles), and so, the ratio is 1:1:\sqrt{2\\}, so I have to divide the hypotenuse by \sqrt{2\\} to get the legs. The hypotenuse is 15\sqrt{6}, so that divided by \sqrt{2\\} is 15\sqrt{3\\}. X is the same length as y because of the triangle ratio, so both x and y for the first triangle are 15\sqrt{3\\}.

The second triangle is a 30 60 90 degree triangle, so the ratio is x:x\sqrt{3}:2x. The short leg is 7\sqrt{3}, so 7\sqrt{3} * 2 is the hypotenuse, which is 14\sqrt{3}. The long leg is 7\sqrt{3} * \sqrt{3}, which is 21. So, x for the second triangle is 14\sqrt{3}, and y for the second triangle is 21.

You might be interested in
Consider the enlargement of the rectangle.
Drupady [299]

Answer:

2.5

Step-by-step explanation:

i did it and got it right

3 0
3 years ago
Read 2 more answers
Please help me. Solve by using substitution.
juin [17]

Answer:

y=-3x+3..........(1)

6x+2y=6

putting value of y

6x+2(-3x+3)=6

6x-6x+6=6

o=0

sorry I do not get answer

6 0
3 years ago
Read 2 more answers
What precent of 44 is 11 <br><br>helllllllllllllllllllllllllllllllllllllllllllllllllllllllllp<br>plz
olganol [36]

Answer:

25.

Step-by-step explanation:

44:11*100 = 25

5 0
3 years ago
Read 2 more answers
Which sequence matches the recursive formula? an=2an-1+5, where a1=5. A) 5,10,15,20 B) 5,15,35,75. C)5,15,25,35. D) 5,20,35,40
Dominik [7]

The recursive formula

a_n = 2a_{n-1}+5

means that, to compute the next value, you have to double the previous one and then add 5.

So, we start with 5. To get the second term, we double it and add five, so we have

a_2 = 2\cdot 5+5 = 10+5 = 15

Next, we will double 15 and add 5:

a_3 = 2\cdot 15 + 5 = 30+5 = 35

So, the answer is B, because it's the only option starting with 5,15,35.

Just to check, let's compute the last step:

a_4 = 2\cdot 35 + 5 = 70+5 = 75

Which confirms option B

6 0
3 years ago
Five more than a certain number is 4 less than one-half that number. what is the number.
podryga [215]

Answer:

i think the answer is 8

hope this helps

7 0
3 years ago
Read 2 more answers
Other questions:
  • AP Calculus redo! I know the answer but can't figure out exactly how to get there. Thank you! I want to work through the steps.
    6·1 answer
  • Yesterday, Ryan had 150 baseball cards. Today, he got d more. Using d , write an expression for the total number of baseball car
    12·1 answer
  • 1.95(6.2-3x)-4.81=18.46
    14·1 answer
  • What is the reading in kwhr of the electric meter shown in the exam figure below?
    11·1 answer
  • Express 0.5401 in scientific notation
    9·1 answer
  • On a spinner, there are 10 equal spots, numbered 1-10. What is the probability of spinning a 5 and then spinning a 5 again?
    11·1 answer
  • PLS HELPPPP MEEE <br> (explain ur answer)
    15·1 answer
  • Help me pls. not links pls
    12·1 answer
  • Ugh help again i had to do it again
    7·1 answer
  • Find an equation for the plane consisting of all points that are equidistant from the points (4, 0, −2) and (6, 14, 0).
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!