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Anna11 [10]
3 years ago
10

Suppose a car is traveling at 60 km/hr, and that the positive y-axis is north and the positive x-axis is east. Resolve the car's

velocity vector (in 2-space) into components if the car is traveling in each of the following directions. The units are km/hr, but you do not need to enter units.
Southeast:
Northwest:
Mathematics
1 answer:
levacccp [35]3 years ago
6 0
For the answer to the question above asking to r<span>esolve the car's velocity vector (in 2-space) into components if the car is traveling in each of the following directions. The units are km/hr, but
</span>east: 60i + 0j 
<span>south: 0i - 60j </span>
<span>SE: (30√2)i - (30√2)j </span>
<span>NW: (-30√2)i + (30√2) </span>you do not need to enter units.
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Change: f(x) = (x+2) (x-2) to standard form
Cerrena [4.2K]

Answer:

X^2 -4

Step-by-step explanation:

Not entirely sure but would u just expand the brackets. As this is a difference between 2 squares the answer should be correct but it not sure.

3 0
3 years ago
At a store ,apples cost $5.00 for 2 pounds.what is the ratio of dollars to pounds of apples
Firdavs [7]

Answer:

$2.50 per pound of apple

Step-by-step explanation:

Or if you have to write it as a fraction $2.50/ 1

8 0
3 years ago
Read 2 more answers
In a horse race with 5 horses, you make a bet by predicting the ranking of all 5 horses. Suppose you place your bet at random. W
lapo4ka [179]

Answer:

P( top two horses are predicted incorrectly in incorrect order)

= \frac{1}{2}

Step-by-step explanation:

In the horse race the outcome can be predicted in 5! = 120 ways.

Now suppose the top two horses were predicted incorrectly in incorrect order. Now, the  top horse can be predicted incorrectly in 4 ways.

Suppose the top horse was predicted to be in k-th position where k = 2, 3 ,4,5

so the second horse can be predicted to be in place from 1 to (k - 1)

So, the top two horses can be predicted  incorrectly in incorrect order

in \sum_{k =2}^{5}(k - 1) = 10 ways  

and for each prediction of the two the remaining horses may be predicted in 3! = 6 ways.

Hence ,

P( top two horses are predicted incorrectly in incorrect order)

= \frac{6 \times 10}{120}

=\frac{1}{2}

 

8 0
3 years ago
√9a^2 + √49b - a + √b<br><br><br> a. 2b + 8 √a<br><br> b. 2a - 8 √b<br><br> c. 2a + 8 √b
Firdavs [7]
The correct answer:
______________________________________________________
Explanation:
______________________________________________________
Assuming you mean:

" √(9a²)  +  (√49b)  −  a  +  √b " ;

Simplify the expression:
_________________________________________________________

Note that:  " √(9a²) = 3a " ;

                   "√(49b) = 7√b " ;   

And we write the expression

   →  " 3a  +  7√b  −  a  + √b " ; 

Combine the "like terms:

   " + 3a − a  =  2a " ;

   " +  7√b  +  1√b   =  8√b " ; 

Rewrite:  
________________________________________________________
    " 2a  +  8√b " ;  which is:  Answer choice:  [C]:  " 2a  +  8√b " .
________________________________________________________
8 0
3 years ago
A ball is thrown into the air with an initial upward velocity of 46ft/s. Its height (h) in feet after t seconds is given by the
Misha Larkins [42]
The answer is A: 3 feet; this answer can be obtained by finding the zeros of the equation above.
5 0
3 years ago
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