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Pavel [41]
3 years ago
11

What is the sum of 19

Mathematics
1 answer:
kondaur [170]3 years ago
4 0
38! hope this helps :)))
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A man starts walking from home and walks 3 miles at north of west, then 5 miles at west of south, then 4 miles at north of east.
Annette [7]

Answer:

Step-by-step explanation:

We shall find the solution of this problem with the help of vector notation of i , j , which show east and  north direction .

The first displacement can be represented by the following

D₁ = - 3 cos 45 i + 3 sin45 j = - 3 / √2 i + 3 / √2 j

The second  displacement can be represented by the following

D₂ = - 5 cos 45 i - 5 sin45 j = - 5 /√2 i - 5 /√2 j

The third  displacement can be represented by the following

D₃ =  4 cos 45 i + 4 sin45 j =  4 /√2 i + 4 /√2 j

Total displacement D =

D₁ +D₂ + D₃

= i ( -3 -5 + 4 ) / √2 + j ( 3 - 5 + 4 ) / √2 j

= - 4  / √2 i + 2 / √2 j

D = - 2.8288 i + 1.414 j

Magnitude of D

= √ ( 2.8288² + 1.414² )

= 3.16 miles

For direction we calculate angle with X axis

Tanθ = 1.414 / 2.8288

θ = 26 °

As x is negative and Y is positive ,

the direction will be north of west .

8 0
3 years ago
A fourth of the quantity 8 less than 12 times a number y is greater than 22.
Masteriza [31]
This is written like this: 1/4(12y-8)>22. Hope this helps.
8 0
3 years ago
Kyle rented a paddle boat at Town Lake. He paid a one time rental fee of $25 plus $10 per hour. His total bill was $45.
alexandr1967 [171]

Answer:

45 - 25 = 20 / 10 = 2 meaning he used the boat for 2 hours.

Step-by-step explanation:

Its the same this as before you start by writing it out how the way PEMDAS works. PEMDAS is ( Parenthesis, Exponents, Multiplication, Division, Adding, and Subtraction). Also i accidentally messed up my other answer so give me a sec.

7 0
3 years ago
1. What is the degree<br> of the polynomial<br> below?<br> X^3+2x-3x^4+5+3x^2
Maurinko [17]

Answer:

4

Step-by-step explanation:

x^3+2x-3x^4+5+3x^2 \\ degree \: of \: polynomial = 4

3 0
3 years ago
A box contains red, purple and green beads in the ratio 4:6:7 There are 1428 more green beads than red beads.
Rama09 [41]

Answer:

3332 green beads

Step-by-step explanation:

8 0
3 years ago
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