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
Anna71 [15]
3 years ago
5

Please help me I need this answer

Mathematics
1 answer:
Karolina [17]3 years ago
6 0

Answer:

11. x=10, y=14.1421356237

12. x=12.124355653, y=14

Step-by-step explanation:

11. Use tan and pythagorus

tanA=opposite/adjacent

tan45=x/10

10(1)=x

x=10

a²=b²+c²

y²=x²+10²

y²=10²+10²

y²=100+100

y=√200=14.1421356237

12. Use tan and pythagorus

tanA=opposite/adjacent

tan30=7/x

0.57735026919x=7

x=7/0.57735026919

x=12.124355653

a²=b²+c²

y²=x²+7²

y²=12.124355653²+7²

y²=147+49

y=√196=14

You might be interested in
Katya treated everyone in theater to a pizza party. She bought 12 pizzas and six 2-liters of soda. The bill was $137.64 (before
sweet-ann [11.9K]

let the price of pizza and soda( per 2 litre bottle) be x and y

from 1st condition

12x+2y=137.6.....(1)

from 2nd condition

x+y =11.95.......(2)

multiply eq. (2) by 2

2x+2y=23.9.....(3)

subtracting (1) and (3)

12x+2y=137.6

2x+2y= 23.9

10x = 113.7

x=113.7/10

x=11.37

2(11.37)+2y=23.9

22.74+2y=23.9

2y=23.9-22.7

2y=1.2

y=0.6

So the prices of  the pizza and soda are 11.37 and 0.6 dollars.

4 0
2 years ago
Simplify -3x^2-5x^2(4x^3-x^2)2
PSYCHO15rus [73]

Let's simplify step-by-step.

−3x2−5x2(4x3−x2)(2)

Distribute:

=−3x2+−40x5+10x4

Answer:

=−40x5+10x4−3x2

8 0
3 years ago
Vanesa earns a base salary of 400
nydimaria [60]

Answer:

Cool

Step-by-step explanation:

7 0
3 years ago
If (2x,3y) =(8, 9),find x and y​
solong [7]

Answer:

x = 4, y = 3

Step-by-step explanation:

Equating corresponding coordinates , gives

2x = 8 ( divide both sides by 2 )

x = 4

and

3y = 9 ( divide both sides by 3 )

y = 3

5 0
2 years ago
Find the number that is 42 less than twice the<br> opposite of itself.
maria [59]
42 - -84=-42

Hope this helps :)
8 0
2 years ago
Other questions:
  • Ms. Gartland bought x number of shirts for the new members of her chorus. The cost for the x number of shirts, including $3.99 s
    6·1 answer
  • If one is more than 3 times a number is divided by the number, the result is four thirds. Find the number
    5·1 answer
  • -110 = -2(8x + 7)<br> A) (6) B) (16)<br> C) {9} D) (14)
    13·2 answers
  • Please help me Evaluate -9 - (-4)
    7·2 answers
  • Are these two claims equivalent, in conflict, or not comparable because they're talking about different things?9 a. "75 percent
    12·1 answer
  • The radius of Venus is 3,760.4 miles. What is the approximate volume of Venus?
    7·1 answer
  • Which line has a slope of 0? A: x = 1 B: 3y + 6x = 0 C: y = x D: y = -5
    7·1 answer
  • HELP ME WITH INEQUALITES ON GRAPHS!!! any knowledge is helpful!!!!
    11·1 answer
  • PLSSSSSSSSS HELP MEEEEEEEEEEEEEEEEEEEEEEEE
    14·1 answer
  • How many solutions does this system
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!