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Law Incorporation [45]
3 years ago
9

FREE BRAINLIEST!! ill also answer questions that you have posted if you answer these 2 questions correctly!! ((Answer both quest

ions!))

Mathematics
2 answers:
jolli1 [7]3 years ago
8 0

Answer: It is D

Step-by-step explanation: It is correct

Gala2k [10]3 years ago
3 0

Answer:

D and C

Step-by-step explanation:

I don't really know if my answers are even correct but I did some research on them. I don't want to waste your time --or mine.

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a dog searching for a bone walks 3.5 m southeast, then 8.2 m at an angle 30 degrees north of east. Find the magnitude of the dog
lianna [129]

Answer:

Step 1: Firstly, we draw both of the axes.

Step 2: We then draw a vector of length 3.5 m (theoretical) along the (-x) axis.  

Step 3: Next, we draw a vector of length 8.2 m from the endpoint towards to top, at an angle of 60° from that point (N.B: 90-30, since it is required to make a 30°∠ with the current vertical; eventually the triangle being formed will be 90° minus the 30°.) Most importantly, the 8.2 m vector should be drawn in such a way so that it is higher than the starting point of the 3.5 m vector.  )

Step 4: Lastly, we draw a 15 m vector from the endpoint of the 8.2 m vector, running above the original vector, and to the left. This one should be drawn on the left side, and must be situated far enough.

∴ Triangle 1 () is of angles 30°, 60° and 90°;

On solving for the vertical side (the slope similar to the 3.5 vector), we get

(8.2/2) m = 4.1 m

Next, we solve for the opposite side via 4.1 × √3= 7.1 m

Moving on to Triangle 2 (),

top side = (15 - 7.1) m = 7.9 m

similarly, right side = (4.1 - 3.5) m = 0.6 m

∴ last side = resultant displacement:

⇒  + (0.6)² = 7.9 m

and, direction of displacement = arcTan(y/x)

= arcTan(0.6/7.9)

= 4.3° north of west

Note: I would appreciate if you give 5 stars, Thank you, and Brainliest

7 0
4 years ago
Mia bought 10 boxes of brownies at the store for a total of $64. The tax on the purchase was $5. What was the cost of each box?
Pavel [41]

Let r represent cost of each box.

We have been given that Mia bought 10 boxes of brownies. So cost of 10 boxes would be 10r.

We have been given that Mia bought 10 boxes of brownies at the store for a total of $64. The tax on the purchase was $5. So the total cost of 10 boxes would be cost of 10 boxes plus tax.

We can represent this information in an equation as:

10r=64+5

We can subtract 64 from both sides as:

10r-64=64-64+5

10r-64=5

Therefore, our required equation is 10r-64=5 and option 'c' is the correct choice.

7 0
3 years ago
What is the value of x?
inn [45]

Answer:

x = 19

Step-by-step explanation:

These type of angles always equal each other

3x - 3 = 6x - 60

Subtract 3x from both sides

-3 = 3x - 60

Add 60 to both sides

57 = 3x

19 = x OR x = 19

6 0
4 years ago
Factor the polynomial by grouping 7x2+16x-15
Alika [10]
16x can be broken down into factors of -105.
21 and -5 come to mind.

7x² + 21x - 5x - 15
7x(x + 3) - 5(x + 3)
(7x - 5)(x + 3) is the factorised form.
7 0
3 years ago
You have 600 cars in a car park. Each car has 6 windows except 10 which have only 5 and 50 that have only 4 windows! A robber co
Setler79 [48]
2,892 windows left unbroken
5 0
3 years ago
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