Answer:
What is it?
Two matrices can be added together if and only if they have the same dimension. Their sum is obtained by summing each element of one matrix to the corresponding element of the other matrix.
How is it used?
The numbers in a matrix can represent data, and they can also represent mathematical equations. In many time-sensitive engineering applications, multiplying matrices can give quick but good approximations of much more complicated calculations.
How can I solve it?
Here is a thing https://www.purplemath.com/modules/mtrxadd.htm
Step-by-step explanation:
Answer:
Step-by-step explanation:
- Total number of plants = 15
- Total cost = $96
- Cost of pink flowering plant = $8
- Cost of purple flowering plant = $5
<u>Let x and y be the number of plants bought. Then we have equations:</u>
- 8x + 5y = 96
- x + y = 15 ⇒ y = 15 - x
<u>Substituting y in the first equation:</u>
- 8x + 5y = 96
- 8x + 5(15 - x) = 96
- 8x + 75 - 5x = 96
- 3x = 96 - 75
- 3x = 21
- x = 7
Correct option is the second one
Answer: b: 0.16
Step-by-step explanation:
The data we have is:
The probability that a car buyer will pick the color blue is 0.25
The probability that a car buyer will pick the color blue and get a speeding ticket in the first year is 0.04
Then we have:
P(blue car) = 0.25
P(ticket in first year) = X
If there is no relation between those two things, the joint probability is:
P(blue car)*P(ticket in first year) = 0.04
X = P(blue car)*P(ticket in first year) /P(blue car) = 0.04/0.25 = 0.16
The correct option is b: 0.16
Answer:
1 and 5 I think
Step-by-step explanation: