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Ede4ka [16]
4 years ago
7

Find a • b if a = 3i + 8j and b= -0.5i - 4j.

Mathematics
1 answer:
Andru [333]4 years ago
8 0
For this case we have the following vectors:
 a = 3i + 8j
 b = -0.5i - 4j
 Using product point we have:
 a.b = (3i + 8j). (- 0.5i - 4j)
 a.b = (3) * (- 0.5) + (8) * (- 4)
 a.b = -1.5 + -32
 a.b = -33.5
 Answer:
 
The point product is given by:
 
a.b = -33.5
 
B. -33.5
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3 years ago
When a dividend greater than 1 is divided by a divisor less than 1, the quotient is
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Find the inverse of the function. f(x)=3x-1/4
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Y=3x-(1/4)

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x=3y-(1/4)
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Help...1. Simplify 2+17x-5x+9......
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8 0
3 years ago
Construct the cumulative frequency distribution for the given data. Daily Low ​(degrees°​F) Frequency ​35-39 11 ​ 40-44 22 ​ 45-
zzz [600]

Answer:

The cumulative  frequency distribution is

<em>Class      Cumulative</em>

<em>Interval  frequency</em>      

35-39 11

40-44 33

45-49 77

50-54 90

55-59 156

60-64 244

65-69 255

Step-by-step explanation:

<em>Class </em>

<em>Interval  F  C.F</em>      

35-39 11 11

40-44 22 11+22=33

45-49 44 33+44=77

50-54 13 77+13=90

55-59 66 90+66=156

60-64 88 156+88=244

65-69 11 244+11=255

The first column contains class interval. The second column denoted by F contains frequencies. The third column contains cumulative frequencies denoted as C.F.

7 0
3 years ago
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