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Andrew [12]
2 years ago
10

Suppose A and B are two matrices with the same dimensions. Explain how to find A + B and B - B.

Mathematics
1 answer:
SCORPION-xisa [38]2 years ago
6 0
A+B: the matrix with same dimension a A and B, the element in row i and column j is:  Aij+Bij

Same for A-B, but with Aij-Bij
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Mr. Hammond earns $13.75 per hours and worked 20.5 hours last week. How much did he earn last week?
IRISSAK [1]

Multiply total hours worked by pay rate:

20.5 x $13.75 = $281.88

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3 years ago
write a numerical expression to represent "20 minus the product of 5 and 2. then evaluate your expression. PLEASE HELP I DON'T H
Shalnov [3]

Answer:

10

Step-by-step explanation:

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6 0
2 years ago
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the angle theta is located in quadrant 1 and cos of theta is 3/8. what is the value of sin of theta ?
ra1l [238]

Answer: sin of theta = (√55)/8

Step-by-step explanation:

Cosine is the x-value divided by the hypotenuse. We now know that since cosine is 3/8, that the hypotenuse is 8. In order to find the third side of the triangle (which would be the v-value), we must use Pythagorean theorem. The third side is square root 55. Sine equals the y-value divides by the hypotenuse. We know both of those values, so Sine of theta = square root of 55 divided by 8.

8 0
3 years ago
The decimal equivalent of is 3/4 is...
tatuchka [14]

Answer:

0.75

Step-by-step explanation:

since it's a fraction you can divide

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4 0
2 years ago
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