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Akimi4 [234]
3 years ago
7

What is the dot product of vectors u = <-5, 4> and v=<-8, -6>?

Mathematics
1 answer:
scoray [572]3 years ago
7 0

Answer:

16

Step-by-step explanation:

dot product = x1x2 + y1y2

= (-5)(-8 + (4)(-6)

= 40 - 24

= 16

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Alexeev081 [22]

Answer:

(-1, 8)

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8 0
2 years ago
Write the inequality:<br><br> Two less than twice a number is less than a half.
Art [367]

Answer:

2x-2<1/2

Step-by-step explanation:

when the problem says "two less than" it means we are subtracting 2 from something, in this case, that something is "twice a number" as the problem states. So we would write 2x where x is a variable that represents any number so we have 2x-2<1/2.

3 0
2 years ago
Help please! the question is in the picture below for reference when answering! thank you so much!
stepan [7]

Answer:

x = -1

Step-by-step explanation:

AB + BC = AC = 28

the way from A to C goes through B.

so, the total way of A to C is the sum of the way from A to B and then from B to C.

=>

(5x + 10) + (2x + 25) = 28

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4 0
2 years ago
Read 2 more answers
The selling price of an item is $600. It is marked down by 30%, but this sale price is still marked up
Norma-Jean [14]

Answer:

7000

Step-by-step explanation:

divide 600 and 30 then multiply that answer by 350

7 0
3 years ago
Multiply. <br> 8 1/2 -2 2/3
MrRissso [65]

Answer: -\frac{68}{3} or -22\ 2/3

Step-by-step explanation:

To solve this problem you must:

- Convert the mixed numbers to fractions, as following:

8\ 1/2=\frac{((8*2)+1)}{2}=\frac{17}{2}

2\ 2/3=\frac{((3(2)+2)}{3}=\frac{8}{3}

- Multiply both fractions. Mutilply the numerators and the denominators:

(\frac{17}{2})(-\frac{8}{3})=-\frac{136}{6}

- Simplify. Therefore, you obtain that the answer is:

-\frac{68}{3} or -22\ 2/3

5 0
2 years ago
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