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3 years ago

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

1 answer:

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

You might be interested in

The population of a city is modeled by the equation P(t)=232012e0.23t where t is measure in years. If the city continues to grow

Gennadij [26K]

In around 6.35 years, the population will be 1 million.

<h3> how many years will it take for the population to reach one million?</h3>

The population is modeled by the exponential equation:

$P(t) = 232,012*e^{0.23*t}$

Then we just need to solve the equation for t:

$P(t) = 232,012*e^{0.23*t} = 1,000,000$

Let's solve that:

$232,012*e^{0.23*t} = 1,000,000\\\\e^{0.23*t} = 1,000,000/232,012 = 4.31\\$

If we apply the natural logarithm to both sides:

$ln(e^{0.23*t}) = ln(4.31)\\\\0.23*t = ln(4.31)\\\\t = ln(4.31)/0.23 = 6.35$

So in around 6.35 years, the population will be 1 million.

If you want to learn more about exponential equations:

brainly.com/question/11832081

#SPJ1

5 0

2 years ago

Which graph best represents a function with a range of all real numbers less than or<br> equal to 7

Tamiku [17]

Answer:

Did u get the answer yet i need it

Step-by-step explanation:

6 0

2 years ago

Jamie has a half-sheet cake. If she has six friends, how much will each one get?

sesenic [268]

Answer:

<h2>The answer is </h2><h2>B. 1/12</h2>

Step-by-step explanation:

step one:

From the problem state, we can actually conclude that Jamie wants to share the half sheet of cake among her 6 friends

step two:

we can express this problem mathematically as

$=\frac{1}{\frac{2}{6} }$

we can inverse the denominator and use a multiplication sign instead

$\\\\= \frac{1}{2}*\frac{1}{6}$

multiplying both denominators we have

$\\\\= \frac{1}{12}$

The answer is B 1/12

8 0

3 years ago

4. Ten less than the product of six and eight less than a number

ICE Princess25 [194]

Answer: 38

Step-by-step explanation:

6 x 8 = 48

48 - 10 = 38

7 0

3 years ago

As a town gets smaller, the population of its high school decreases by 8% each year. The senior class has 320 students now. In h

Semmy [17]

Answer:

in 13.95 years the senior class will have 100 students.

Step-by-step explanation:

P(h) = p(0.92)^t (equation for exponential change)

P(h) - population of highschool (or senior class) = 100

p - staring amount = 320

t = time in years

100 = 320(0.92)^t

1/3.2 = .92^t (divide both sides by 320)

log(1/3.2, .92) = t (log base 0.92 of 1/3.2 equals t)

13.9497 = t

6 0

3 years ago