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svet-max [94.6K]
3 years ago
15

Which matrix Is the product of a 3x3 identity matrix and the scalar 3

Mathematics
1 answer:
maw [93]3 years ago
8 0

Answer:

  Each diagonal element will be 3. Off-diagonal elements will be zero.

Step-by-step explanation:

The one that looks like ...

  \left[\begin{array}{ccc}3&0&0\\0&3&0\\0&0&3\end{array}\right]

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the number of grams a woman should eat in a day to maintain her weight is proportional to her weight. a woman weighing 102 pound
vitfil [10]
Given:
grams of fat : 34 grams TO weight of woman : 102 pounds
grams of fat : ? TO weight of woman : 180 pounds

This is a proportion problem: 34 grams to 102 pounds.

We first have to convert a unit of measure to another to maintain uniformity of measure. let us convert pounds to grams:

102 pounds * 453.592 grams / pound = 46,266.384 grams
180 pounds * 453.592 grams / pound = 81,646.560 grams

34 grams to 46,266.384 grams = x grams to 81,646.560 grams

proportion: a:b = c:d where ad = bc

34 grams * 81,646.560 grams = x * 46,266.384 grams
2,775,983.04 grams² = x * 46,266.384 grams
2,775,983.04 grams² ÷ 46,266.384 grams = x
60 grams = x 

A woman weighing 180 pounds should eat 60 grams of fat to maintain her weight.
7 0
3 years ago
The area of the parallelogram below is ____ square meters. A parallelogram with height labeled with 8 meters. The top horizontal
zzz [600]

Answer: answer is 96

Step-by-step explanation: you have to multiply  8 6 and 2 together to get your answer

3 0
2 years ago
Read 2 more answers
Eva invests $6400 in a new savings account which earns 3.4 % annual interest, compounded continuously. What
cupoosta [38]

Answer:

$7821.74

Step-by-step explanation:

Eva invests $6400 in a new savings account which earns 3.4% annual interest, compounded continuously.

We have to find the value of her investment after 6 years,

Now, using the formula for the compound interest we can get the value of her investment.

So, it will be V = 6400 (1 + \frac{3.4}{100} )^{6} = 7821.74 Dollars (Approximate)  

{Rounded to the nearest cent} (Answer)

7 0
3 years ago
Two equations are given below:
astraxan [27]
A - 3b = 4
a = b -2

(b - 2) - 3b = 4
b - 2 - 3b = 4
-2b = 4 + 2
-2b = 6
b = 6/-2
b = -3

a = b - 2
a = -3 -2
a = -5

to check: a = -5 ; b = -3  
⇒ (-5,-3)
a - 3b = 4
-5 - 3(-3) = 4
-5 + 9 = 4
4 = 4
4 0
2 years ago
Can you write all of those in Fractions Decimals and Percentages .
Misha Larkins [42]

Answer:

a) decimal 7.222

fraction: 65/9

percentage: 722.22

b) Fraction: 37/5

decimal: 7.4

Percentage: 740

Step-by-step explanation:

6 0
2 years ago
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