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Sunny_sXe [5.5K]
4 years ago
14

Find the dot product of v=-7i+4j and w=-6+5j

Mathematics
1 answer:
Anna35 [415]4 years ago
6 0
V•w = (-7i +4j)•(-6i +5j) = (-7)×(-6) +4×5 = 42 +20
v•w = 62
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Determine the relationship between the two triangles and whether or not they ca
AnnZ [28]

Answer:

They are congruent.

Step-by-step explanation:

The have the same side length,  as shown by the marking on the side next to the double marked angle and across from single marked angle. They have the same angle measures located in the same places as well. They are congruent as proven by shape, angle measures, and side length.

4 0
3 years ago
The function is used to convert temperature from Celsius (C) to Fahrenheit (F). The function C(K) = K − 273.15 is used to conver
ANTONII [103]

Answer:

F(k)= \frac{9}{5}(k - 273.15) + 32

 

Step-by-step explanation:

Given

F(c)= \frac{9}{5}c + 32

C(k) = k - 273.15

Required

Function from K to F

This implies that, we calculate F(k)

Given that:

F(c)= \frac{9}{5}c + 32

Substitute c(k) for c

F(c(k))= \frac{9}{5}c(k) + 32

Substitute: C(k) = k - 273.15

F(c(k))= \frac{9}{5}(k - 273.15) + 32

Hence:

F(k)= \frac{9}{5}(k - 273.15) + 32

8 0
3 years ago
The diameter of a circle is 13 ft. Find the circumference to the nearest tenth.
Neporo4naja [7]

Step-by-step explanation:

circumference of a circle

U = 2 x pi x r

what you know:

U = 13

rearrange and solve for r

U/(2 x pi) = r

4 0
3 years ago
Elliot has a total of 26 books. He has 12 more fiction books than nonfiction books. Let x represent the number of fiction books
AlladinOne [14]

<u>Answers</u>

19 fiction books

7 nonfiction books


<u>Explanation</u>

x + y = 26  ............................................. (i)

x – y = 12  ............................................ (ii)

Elliot added the two equations and the result was

2x = 38.

Dividing both sides by 2;

x = 19

There are 19 fiction books.

Substituting x in equation (i),

x + y = 26             when x = 19

19 + y = 26

y = 26 - 19

   = 7

There are 7 nonfiction books

4 0
3 years ago
Read 2 more answers
On a piece of paper, use a protractor to construct a triangle with angle measures of 40° and 60º.
andrew-mc [135]

Answer:

There are 180 degrees in a triangle so it is 80 degrees

4 0
2 years ago
Read 2 more answers
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