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2 years ago

HELP Find the resulting vector matrix of this matrix multiplication.

Mathematics

1 answer:

NISA [10]2 years ago

4 0

Answer:

a = -21 and b = 15

Step-by-step explanation:

It is given a matrix multiplication,

To find the value of a and b 

It is given that,

| 6 -5 | * | -1 | = | a |

|-3 4 | | 3 | | b |

We can write,

a = (6 * -1) + (-5 * 3)

= -6 + -15

= -2 1

b = (-3 * -1) + (4 * 3)

= 3 + 12

= 215

Therefore the value of a = -21 and b = 15

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Find m (2x+14) (X+7)

LekaFEV [45]

Answer:

Step-by-step explanation:

Ⓗⓘ ⓣⓗⓔⓡⓔ

Well, assuming m of angle ABD is 90 degrees, then you would add and then solve.

2x+14+x+7=90

3x+21=90

3x=69

(っ◔◡◔)っ ♥ Hope this helped! Have a great day! :) ♥

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4 0

3 years ago

A bacteria culture begins with 15 bacteria which double in amount at the end of every hour. How many bacteria are grown during t

elixir [45]

We use P = i•e^rt for exponential population growth, where P = end population, i = initial population, r = rate, and t = time
P = 2•i = 2•15 = 30, so 30 = 15 [e^(r•1)],
or 30/15 = 2 = e^(r)
ln 2 = ln (e^r)
.693 = r•(ln e), ln e = 1, so r = .693
Now that we have our doubling rate of .693, we can use that r and our t as the 12th hour is t=11, because there are 11 more hours at the end of that first hour
So our initial population is again 15, and P = i•e^rt
P = 15•e^(.693×11) = 15•e^(7.624)
P = 15•2046.94 = 30,704

4 0

3 years ago

Read 2 more answers

Please help me i beg you I really need

SCORPION-xisa [38]

The correct answer is B, sorry if it wasn't correct.

3 0

3 years ago

Read 2 more answers

These ordered pairs, {(2,4) (3,6) (4,8) (5,10)}, are a function. True False

ki77a [65]

Answer:

True

Step-by-step explanation:

In order for a relation (a set of ordered pairs) to be considered a function, every value in the domain (the set of all the first numbers in the pair) is associated with one value in the range (the set of all second numbers in the pair). This is easiest to see visually. Our domain is the set {2, 3, 4, 5} and our range is the set {4, 6, 8, 10}, and we can visualize the ordered pair (2, 4) as an "arrow" starting a 2 in the domain and ending at 4 in the range. When seen this way, a relation is a function if every value in the domain only has one arrow coming out of it. We can see from the attached picture that the ordered pairs in the problem are a function, so this statement is true.

8 0

3 years ago

HELP ME PLZZ

Anastaziya [24]

Answer:

2g/cm³

Step-by-step explanation:

p=m/v

mass=80g

volume=4cm x 2cm x 5cm = 40cm²

80g/40cm²=2

density = 2 g/cm³

6 0

2 years ago