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Inga [223]
3 years ago
11

Can someone answer theese 3 questions.

Mathematics
1 answer:
NNADVOKAT [17]3 years ago
7 0

Answer:

1.) A

2.) D

3.) A

Step-by-step explanation:

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A standard stop sign measure 30 inches from flat to flat, what is the length of one side
Gennadij [26K]
Comment
What you are describing is a side of a square that the octagon is placed inside of. Every other side of the regular octagon touch the middle of the square's side. the other 4 sides of the octagon go at a diagonal of 45 degrees to the ends of the first set of sides. There is a diagram below to help you understand this description.

Formula
The stop Sign's line going from flat to flat is S
S = a + 2*a*sqrt(2)/2
a + 2*a*sqrt(2)/2 = 30
a + a*sqrt(2)
Solve
a + a*1.414 = 30
a + 1.414*a = 30
2.414 a = 30          Divide by 2.414
a = 30/2.414
a = 12.428 <<<<< Answer



6 0
3 years ago
a parallelogram has one side that is 9 millimeters and one side that is 13 millimeters. What is the perimeter of the parallelogr
liraira [26]

Answer: The answer would be 44 millimeters.

Step-by-step explanation: A parallelogram has to sets of congruent sides. One set has two sides that are 9 millimeters and the other set has two sides that are 13 millimeters. 9+9 = 18, 13+13= 26 and 18+26= 44!

3 0
3 years ago
-2x -8 &lt; 6<br> what is the answer to this
suter [353]

Answer:

x > -7

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right  

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality<u> </u>

Step-by-step explanation:

<u>Step 1: Define</u>

-2x - 8 < 6

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. [Addition Property of Equality] Add 8 on both sides:                                  -2x < 14
  2. [Division Property of Equality] Divide -2 on both sides:                              x > -7

Here we see that any value <em>x</em> greater than -7 would work as a solution to the inequality.

7 0
3 years ago
Test your solution in the equation 0.6+15b+4=25.6
sleet_krkn [62]

Answer:

b = 21/15

Step-by-step explanation:

0.6+15b+4=25.6

15b + 4.6 = 25.6

15b = 25.6 - 4.6

15b = 21

b = 21/15

Test:

0.6 + 15*21/15 + 4 = 25.6

06 + 21 + 4 = 25.6

7 0
3 years ago
Read 2 more answers
Which set of integers is a Pythagorean triple and are the side lengths of a right triangle?
m_a_m_a [10]

Answer: the integers that is a Pythagorean triple and are the side lengths of a right triangle is

C. 9, 40, 41

Step-by-step explanation:

A Pythagorean triple is a set of three numbers which satisfy the Pythagoras theorem. The Pythagoras theorem is expressed as

Hypotenuse^2 = opposite side^2 + adjacent side^2

Let us try each set of numbers.

A. 20,23,28

28^2 = 20^ + 23^2

784 = 400 + 529 = 929

Since both sides of the equation are not equal, the set of numbers is not a Pythagoras triple.

B. 18, 26, 44

44^2 = 18^ + 26^2

1936 = 324 + 676 = 1000

Since both sides of the equation are not equal, the set of numbers is not a Pythagoras triple.

C. 9, 40, 41

41^2 = 9^ + 40^2

1681 = 81 + 1600 = 1681

Since both sides of the equation are equal, the set of numbers is a Pythagoras triple.

D. 8, 20, 32

32^2 = 20^ + 8^2

1024 = 400 + 64 = 464

Since both sides of the equation are not equal, the set of numbers is not a Pythagoras triple.

7 0
3 years ago
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