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guajiro [1.7K]
4 years ago
11

Let matrix A=[8 -2] [4 7] Let matrix B=2A. find b22.

Mathematics
1 answer:
luda_lava [24]4 years ago
8 0

Answer:

  14

Step-by-step explanation:

b22 = 2×a22 = 2×7 = 14

__

Multiplication of a matrix by a scalar is the same as multiplying every element of that matrix by that scalar.

  B=2A=2\left[\begin{array}{cc}8&-2\\4&7\end{array}\right]=\left[\begin{array}{cc}16&-4\\8&14\end{array}\right]\\\\b_{22}=14

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Step-by-step explanation:

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7 0
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3 years ago
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7 0
3 years ago
1. Solve the equation using the zero-product property.<br> -x(5x – 4) = 0
Oxana [17]

Answer:

x = 0, 4/5

Step-by-step explanation:

The zero-product property states that if the product of a and b is zero, then either a = 0, b = 0, or both terms equal zero

  • Here our a term is -x and our b term is (5x - 4)
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6 0
3 years ago
Don't understand need help please.
lys-0071 [83]
Esqueça sua discórdia, ninguém se junta
3 0
3 years ago
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