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Lelu [443]
3 years ago
13

HELP 50 POINTS NOW HELP HELP HELP HLEP

Mathematics
1 answer:
koban [17]3 years ago
3 0

Answer:

a=42°

b=138°

Step-by-step explanation:

the sum of angles on a triangle is 180°

so

18+120+a=180

138+a=180

a=180-138

a=42

a+b=180 because a ans b are linear pair of angles.

Definiton:A linear pair of angles is formed when two lines intersect. Two angles are said to be linear if they are adjacent angles formed by two intersecting lines. The measure of a straight angle is 180 degrees, so a linear pair of angles must add up to 180 degrees.

a=42 from before

it means that b=180-42=138

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A camel shepherd bought a caravan of camels. On his journey through the
Nikolay [14]

Answer:

  • <u>61 camels</u>

Explanation:

I will show my thinking using words and numbers.

The fact that when the camels walked in rows of 2 one walked alone means tha the number of camels divided by 2 leaves a remainder of 1. Also, that means that if you subtract 1 from the number of camels, the new number is a multiple of 2. This is:

  • The number of camels less 1 is a multiple of 2.

With the same reasoning, you obtain:

  • The number of camels less 1 is a multiple of 3.

  • The number of camels less 1 is a multiple of 4.

  • The number of camels less 1 is a multiple of 5.

Now, the numbers of camels less 1 is a multiple of 2, 3, 4, and 5. Now, let's search the first (least) common multiple of 2, 3, 4, and 5.

For that, you have to factor each number into its prime factors:

  • 2 = 2
  • 3 = 3
  • 4 = 2²
  • 5 = 5

The least common multiple is the product of the common and uncommon factors, each raised to its highest power: 2² × 3 × 5 = 60.

Remember that 60 is the number of camels less 1, thus the number of camels is 60 + 1 = 61.

The next common multiple is 2 × 60 = 120, which exceeds 100 thus the only possible value is the one determined above.

Now you can prove that 61 meets the conditions:

  • 61 ÷ 2 = 30, plus one (remainder): means that 60 camels walked in 30 rows of 2 and one walked alone.

  • 61 ÷ 3 = 20, plus one: 60 camels walked in 20 rows of 3 and one walked alone.

  • 61 ÷ 4 = 15, plus one: 60 camels walked in 14 rows of 4 and one walked alone.

  • 61 ÷ 5 = 12, plus one: 60 camels walked in 12 rows of 5 and one walked alone.
4 0
3 years ago
I will give you BRAINLIEST
nasty-shy [4]

Answer:

The answer is the option C

4\ ft

Step-by-step explanation:

we know that

The perimeter of a rectangle is equal to

P=2b+2h

where

b is the base side of the rectangle

h is the height of the rectangle

In this problem we have that

b=8\ ft, h=4\ ft,P=24\ ft

The length of side x is equal to the height  of rectangle

so

x=h=4\ ft

6 0
4 years ago
Read 2 more answers
Can you please help me with #7&amp;8 thanks in advance
Ilya [14]
(3/5)(1/2)

Let B = fraction of the bulletin board
for Homeroom 101

B = (3/5)(1/2)

B = 3/10

3 0
3 years ago
The period T in seconds of a simple pendulum of length L in feet is given by T=2π√L/32. Determine the length in feet of a simple
ASHA 777 [7]
 In this situation, you have to use the equation
T = 2π√L / 32
 We need to find L so we have:
 T / 2π = √L / 32
 (T / 2π) ^ 2 = L / 32
 L = 32 * (T / 2π) ^ 2

 Substitute the values:
 L = 32 * (8.72 / (2 * (3.14))) ^ 2
 L = 61.69694511 feet
 L = 62 feet
 So the Answer is
 L = 62 feet

5 0
3 years ago
Read 2 more answers
X-4y=-12 <br> what is this supposed to equal
DochEvi [55]

Answer: X- 4y - 12=0

step by step explanation:

First, move the constant to the left by adding its opposite to both sides

x-4y -12 = 12-12 =

X-4y-12 =  0

So the answer is X- 4y - 12=0

6 0
3 years ago
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