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galben [10]
3 years ago
7

Which would be the next step in solving for matrix A?

Mathematics
1 answer:
Lady_Fox [76]3 years ago
8 0

Answer:

A=(16 -5 0 -9)-(3 -4 -11 24)

Step-by-step explanation:

The solution process for any algebraic expression is to "undo" what is done to the variable. Here, matrix A has (3 -4 -11 24) added to it. The next step is to undo that addition, by subtracting that amount from both sides of the equation. The result is ...

  A = (16 -5 0 -9)-(3 -4 -11 24)

_____

We assume there are typos in the answer choices listed here.

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You row upstream at a speed of 2 mi/h. You travel the same distance
Reika [66]

Answer:

3.5 m/hr  

Step-by-step explanation:

2 + c   =   5 -c           c = speed of current

2 c = 3      c = current speed = 1.5 m/hr

                         your speed =   5 - 1.5    (or  2 + 1.5)  =  3.5 m/hr

4 0
2 years ago
5% of all widgets are defective. there is a 30% chance that a widget was produced at the foo factory. if a widget was produced a
VARVARA [1.3K]
A.) P(defective | foo) = P(defective & foo)/P(foo)
  4% = P(defective & foo)/30% . . . . . . . . . plug in the given data
  0.04*0.30 = P(defective & foo) = 0.012 = 1.2%

The probability that a widget was produced at the foo factory and is defective is 1.2%.

b.) P(defective | foo) ≠ P(defective) (4% ≠ 5%), so the events P(defective) and P(foo) are NOT independent.

c.) P(foo | defective) = P(defective & foo)/P(defective)
  P(foo | defective) = 1.2%/5% = 24%

The probability that a widget was produced at the foo factory given it is defective is 24%.
8 0
3 years ago
John's employer increased his annual salary of $55,000 by $5,700. What percent was his raise, rounded to the nearest tenths plac
Free_Kalibri [48]

Answer:

3.64% (when rounded to the nearest hundredth)

Step-by-step explanation:

I'm assuming by 5700 you actually mean 57,000.

Calculate the percent change:

(57,000-55,000)/55,000 *100

(2000/55000)x100

0.036363x100

3.6363 rounded to the nearest hundredth is 3.64

3 0
2 years ago
There are 42 boys in the sixth grade. The number of girls in the sixth grade is 35. Lonnie says that
Papessa [141]

Answer:

Lonnie is incorrect because the ratio is 6:5 and not 16:5.

Step-by-step explanation:

First, create a ratio comparing the number of boys to girls:

42:35

This can be simplified since both numbers are divisible by 7:

42:35

Divide each number by 7:

6:5

So, Lonnie is incorrect because the ratio is 6:5 and not 16:5.

7 0
3 years ago
Read 2 more answers
B<br> 13 ft.<br> 5 ft.<br> A<br> C<br> 12 ft.<br> Find the value of Cos (B) =
Alecsey [184]

Answer: the answer is 12/13

4 0
3 years ago
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