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tamaranim1 [39]
3 years ago
5

Solve the matrix equation. The inverse of the coefficient matrix is given. EXPLAIN. The answer's D. (2/9,-4/3,-1/3)

Mathematics
1 answer:
Lerok [7]3 years ago
4 0

Answer:

Right answer is D number

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1. Scientists randomly select ten groups from a population of men over 50 years old. They calculate the mean
Naya [18.7K]

Answer:

Step-by-step explanation:

Sampling Variability

Hope that helped! :)

5 0
3 years ago
Unit 1: Scientific Notation Constructed Response Assignment
balu736 [363]
brainly.com/question/5027087

Let C, S and H be the diameters of cell, sand and hair


Diameter of a cell: C=1 \cdot 10^{-5}m

Diameter of a grain of sand: S=2 \cdot10^{-4}m

Part A:

H=0.000025=2.5 \cdot 10^{-5} meters, because it takes 5 movements right of the decimal dot, until there is only one digit to its left.

Part B:

we are comparing S=2 \cdot10^{-4} m to C=1 \cdot10^{-5} m ,

\frac{S}{C}= \frac{2 \cdot 10^{-4}}{1 \cdot 10^{-5}}=\frac{20 \cdot 10^{-5}}{1 \cdot 10^{-5}}=20

thus S is 20 times larger than C

Part C

1m=1 \cdot10^9nm

thus,

H=2.5 \cdot 10^{-5}m=2.5 \cdot 10^{-5} \cdot 1 \cdot 10^9nm=2.5 \cdot 10^{-5+9}=2.5\cdot10^4nm

Part D.

1m=1\cdot 10^9nm\\\\1nm=\displaystyle{ \frac{1m}{10^9}=1\cdot 10^{-9}m}

thus 300 nm are written in meters as follows:

300nm= 300\cdot 1\cdot 10^{-9}m=3\cdot 10^2 \cdot 10^{-9}m=3\cdot 10^{-7}m
5 0
3 years ago
What is the circumference of a circle if the diameter is 6.4
melamori03 [73]
The answer is C I’m pretty sure, it makes the most sense
8 0
3 years ago
Read 2 more answers
8c + 18 = 34 please help
Elanso [62]

Answer:

2

Step-by-step explanatthe answer is 2

7 0
2 years ago
Read 2 more answers
12
choli [55]

Answer:

$29.50

Step-by-step explanation:

The price that Rob paid includes a 15% discount.  This means that Rob paid 85% of the original price.

100% - 15% = 85%

Divide the price Rob paid by the percentage the price is of the total.

85% = 0.85

50.15/0.85 = 59

Now, divide the total price by 2 so that you can find the price of one pair of jeans.

59/2 = 29.50

The price of one pair of jeans is $29.50

5 0
2 years ago
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