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
Maurinko [17]
3 years ago
6

Can someone explain how to do 7 and 13

Mathematics
1 answer:
Readme [11.4K]3 years ago
8 0

Answer:

7. 45-45-90 Triangle (Legs are congruent and hypotenuse x square root 2

Answer: 42 squareroot 2

13. 12

Step-by-step explanation:

You might be interested in
Find the length of the orther leg when one leg is 20 and hypotenous is 25
liberstina [14]

Answer:

15

Step-by-step explanation:

Let 'l' be the length of the other leg

Using pythagoras theorem,

25² = 20² + l²

625 = 400 + l²

225 = l²

l = 15

4 0
3 years ago
Read 2 more answers
17976 / 28<br><br><br><br><br> / means divide if you didn't know :)
GREYUIT [131]

Answer:

642 you divide the two numbers

4 0
3 years ago
Can someone help me with this ONE question? Write an equation.. and solve for X
matrenka [14]

Answer:

Equation: 720=(8x-1)+110+(5x+36)+116+(7x+19)+(6x-2)

x=17

Step-by-step explanation:

A 6 sided polygon is 720° degrees

so

720=(8x-1)+110+(5x+36)+116+(7x+19)+(6x-2)

Simplify

720=(8x+5x+7x+6x)+(−1+110+36+116+19+−2)

Combine like terms:

720=26x+278

flip equation:

26x+278=720

subtract 278 from both sides

26x=442

divide by 26 both sides:

x=17

Hope this helps.

7 0
3 years ago
Someone please hurry, I have no idea what I am doing
kvv77 [185]

Answer

61.80°

Step-by-step explanation:

use SOHCAHTOA to solve

by using SOH

sin? = 51/55

? = 1÷sin(51/55)

? = 61.80°

7 0
3 years ago
A retaining wall requires 36.8 cu yd of concrete. The combined amounts of cement, sand, and gavel should be 1 1/2 times the of c
svet-max [94.6K]

Using proportions, it is found that the total amount of cement, sand, and gavel required is of 55.2 cubic yards.

<h3>What is a proportion?</h3>

A proportion is a fraction of a total amount, and the measures are related using a rule of three. Due to this, relations between variables, either direct(when both increase or both decrease) or inverse proportional(when one increases and the other decreases, or vice versa), can be built to find the desired measures in the problem, or equations to find these measures.

The decimal equivalent to the mixed number 1 1/2 is given by:

1 + 1/2 = 1 + 0.5 = 1.5.

1.5 times 36.8 cubic yards is:

1.5 x 36.8 = 55.2.

The total amount of cement, sand, and gavel required is of 55.2 cubic yards.

More can be learned about proportions at brainly.com/question/24372153

#SPJ1

7 0
1 year ago
Other questions:
  • Explain whether (x+3) is a factor of 2x^2-5x-3? <br> Please help
    5·1 answer
  • Evauluate 1 1/3 + 2 2/3
    12·1 answer
  • The sum of an infinite geometric series is 1,280, while the first term of the series is 160. What is the common ratio of the ser
    13·1 answer
  • What is the best approximation for the perimeter of a semicircle with a dimeter of 12cm?
    7·1 answer
  • Look at the figure which step should be taken next to construct a line parallel to AB
    10·2 answers
  • Which is the smallest 5 digit number that ends in 9 and reads the same forward as well as backwards
    15·1 answer
  • 8-1×0+2÷2=? It looks easy, so many different results.
    12·2 answers
  • IM LITERALLY BEGGIIINNGG HURRRYYYY PLSSSS HELP MEH
    14·1 answer
  • What is the slope of the equation y – 3 = –4(x – 5)?
    14·1 answer
  • Norma bought 2 bags of marbles. There were 83 marbles in each bag. How many marbles did Norma buy?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!