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Gemiola [76]
4 years ago
11

Find a ⋅ b. a = <5, 2>, b = <4, 5>

Mathematics
1 answer:
mariarad [96]4 years ago
7 0

Answer:

The answer is 30  

Step-by-step explanation:

To get a.b  

For a = <wa, za> and b = <wb, zb>, the dot product represents multiplication sign.

We say,  

 a•b = (wa)(wb) + (za)(zb)

The next step is to substitute the given information into the above equation we generated.

Then we say,  

 a•b = 5•4 + 2•5

 a.b = 20 + 10

 a•b = 30

The answer is 30  

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Lexie started her homework at 4:30 p.m. she finished at 5:05 p.m. how many seconds did it take her to finish your homework
xz_007 [3.2K]
4:30 to 5:05 = 35 minutes

1 minute = 60 seconds

35 minutes = 35 × 60

Multiply:

35 × 60 = 2,100

Answer = 2,100 seconds

Hope this helped☺☺

5 0
3 years ago
Find the distance between points P(9, 2) and Q(6, 1) to the nearest tenth.
Rasek [7]

Answer:

<em>3.2 units</em>

Step-by-step explanation:

Find the distance between points P(9, 2) and Q(6, 1) to the nearest tenth.

The distance between two points is expressed as;

D = √(x2-x1)²+(y2-y1)²

D =  √(1-2)²+(6-9)²

D =  √(-1)²+(-3)²

D = √1+9

D = √10

<em>Hence the distance between the two points is 3.2 units</em>

5 0
3 years ago
Evaluate ∫ e3x dx. A. e3x + C B.1/ e4x+C 4 C. e4x + C D. 1/3 e3x + C
ira [324]
Since the integral of (e^ax)dx = (1/a)(e^ax) + C, then in this case, we can let a = 3, and follow the formula to integrate this.
integral of (e^3x)dx = (1/3)(e^3x) + C, where C is an arbitrary constant.
This is choice D.
5 0
4 years ago
PLEASE ANSWER AS QUICKLY AS POSSIBLE WILL GIVE BRAINLYEST TO FIRST Find the exact value of
Naddika [18.5K]

Answer:

The exact value is 24

Step-by-step explanation:

3 0
2 years ago
What is a low number for 3.521
Ede4ka [16]
3.520 I think dat is it
3 0
4 years ago
Read 2 more answers
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