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
lapo4ka [179]
3 years ago
14

I need the answer pls and ty

Mathematics
1 answer:
choli [55]3 years ago
4 0

Answer:

B

Step-by-step explanation:

45-45-90 triangles have the ratio 1:1:sqrt(2) on their sides

20sqrt(2):20sqrt(2):20(2)/40 satisfies this ratio

You might be interested in
I need help on 18, thank you!
adelina 88 [10]
I think the answers are: a = 60°, b = 45°, c = 36°.
5 0
2 years ago
If 3x + 5y = 2 and 2x - 4y = 20, what is 5x - y?
gavmur [86]

Answer:

= 298/11

Step-by-step explanation:

3x + 5y = 2 | ×2 |

2x - 4y = 20 | ×3 |

6x + 10y = 4

6x - 12y = 60

____________--

22y = -56

y = -56/22

y = -28/11

3x + 5y = 2 | ×4 |

2x - 4y = 20 | ×5 |

12x + 20y = 8

10x - 20y = 100

_____________+

22x = 108

x = 108/22

x = 54/11

5x - y

= 5(54/11) - (-28/11)

= 270/11 + 28/11

= 298/11

8 0
3 years ago
In triangle ABC, Aat the top of the triangle, B at 90° and C at the third end, angle C = 21°, the hypotenus = 15m,find BC = y th
dsp73

Answer

Step-by-step explanation:

Law of sines: SinB/15 = SinA/BC

B = 90

A = 180-90-21=69°

BC= (15*SinA)/SinB = (15*sin69)/1 ≈ 14m

7 0
2 years ago
A school custodian waxed the gymnasium floor that measured 20 feet by 20 feet. How many square feet did she have to wax?
Irina-Kira [14]
Hey there, all you do is multiply 20 by 20, 20×20=400. Therefore, the answer is 400 square feet.
6 0
3 years ago
In two or more complete sentences, compare the number of x-intercepts in the graph of f(t) = 12 to the number of x-
alina1380 [7]

Answer:

Both functions have one x-intercept each.

Step-by-step explanation:

The first function is

f(t )=  {t}^{2}

This is a parabola with vertices at the origin and has one x-intercept at t=0.

The transformed function is

g(t) =  {(t + 3)}^{2}

The function g(t) is obtained by shifting the graph of f(t) to the left by 3 units.

This graph also has one x-intercept at x=-3.

Therefore both functions has the same number of x-intercepts

8 0
3 years ago
Other questions:
  • Simplify. (½) ²− 6(2−2/3)
    14·1 answer
  • PLEEEEEEEEEEEEEEEASE HELP ME WITH THIS! IT IS DUE TOMORROW!!
    13·2 answers
  • At the beginning of an experiment, there are 600 grams of contaminants. Each hour, half of the contaminants are filtered out. Ho
    9·1 answer
  • Rewrite the expression 8j * 9r with less symbols and characters
    14·2 answers
  • In 1945, the federal minimum wage was $0.40/h. In 2015, the federal minimum wage is $7.25/h. What is the percent increase?
    13·1 answer
  • Help I’m so confused
    12·1 answer
  • 3x-1/2y +2 2/3y -5/6x
    14·1 answer
  • RATEE MEEE!?!!!!!!>???????????????????????!!!!!!!!!!!!!!!​
    13·1 answer
  • James has 21 cups of flour he will pour the flour equally into 4 container how many cups of flour will be in each container
    6·1 answer
  • Lesson 3 . 6th grade students have 195 boys and 117 girls working. The teacher in charge wants to divide into groups so that the
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!