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raketka [301]
3 years ago
5

Find a ⋅ b. a = 9i + 5j, b = 4i + 3j

Mathematics
2 answers:
aksik [14]3 years ago
4 0

Answer:

Step-by-step explanation:

51

<13, 8>

<36, 15>

-21

N76 [4]3 years ago
3 0
9i+5j x 4i+3j
Factor
=9i+20ij+3j
= (9+20j)i+3j
=3j+(9+20j)i =answer
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Please help me asapppp<br><br> ty :)
Norma-Jean [14]

Answer:

The slope of this parallel line is 3.

Step-by-step explanation:

Parallel lines have the same slope.  The given line y = 3x - 2 has the slope 3.  Therefore the desired parallel line also has the slope 3.  This is all that is necessary to answer this question.

The slope of this parallel line is 3.

4 0
3 years ago
Darius is saving money to go to a gaming summer camp. He already has $95 in the bank. His goal is to earn $900 so he can pay for
Gnesinka [82]

Answer:

23 weeks

Step-by-step explanation:

900 - 95 = 805

He only has to save up $805 now.

How many times does 35 go into 805?

35 x 23 = 805

805 ➗35 = 23

4 0
4 years ago
Billy graphed the system of linear equations to find an approximate solution. y =-7/4 x +5/2 y =3/4 x – 3
GarryVolchara [31]

Answer:

(2.2,-1.35)

Step-by-step explanation:

we have

y=-\frac{7}{4}x+\frac{5}{2} ------> equation A

y=\frac{3}{4}x-3 ------> equation B

Remember that

The solution of the system of equation is the intersection point both graphs

Using a graphing tool

see the attached figure

The intersection point is (2.2,-1.35)

5 0
3 years ago
Read 2 more answers
2<br> 1 point<br> The point, (-3, 7), is on the line y = -3x+7.<br> True<br> O False
sladkih [1.3K]

Step-by-step explanation:

  • in order to know if the the point is on the line plug in the x coordinate to check if it gives you the y coordinate as an output.
  • If you plug in the x coordinate and it gives you the given y coordinate then the point is on the given line
  • Now let us plug in the value of x=-3
  • y =  - 3( - 3) + 7 \\ y =  - 9 + 7 \\ y =  - 2
  • now if you check plugging in the given x coordinate it does not give you the given y coordinate but -2
  • therefore the point(-3,7) is not in the line but (-3,-2) is the point in the line.
8 0
1 year ago
You entered a contest through your local television station. There is one first prize of a new car! There are 5 second place pri
Grace [21]

Answer:

\frac{1}{400} or 0.0025 0r 0.25%

Step-by-step explanation:

There are three categories that will get a prize

1) First place = 1 person

2) Second place = 5 persons

3) Third place = 20 persons

A total of 26 people will get prizes.

However, we want to determine your chance to win one of the second place prizes

There are 5 prizes in second place

This means out of a total of 2000 people, you could be among the 5

i.e 5 out of 2000

This is \frac{5}{2000} = \frac{1}{400} = 0.0025

This means you have a chance of 1 out of 400

= 0.25%

8 0
4 years ago
Read 2 more answers
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