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3 years ago

Consider matrix A. A=[−385−123] What matrix results from the elementary row operations represented by −2R2+3R1?

Mathematics

1 answer:

Ivan3 years ago

5 0

Answer:

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5 - 3tan3x = 0 trên -π< x < π.

serious [3.7K]

Answer:

x = 0.343

Step-by-step explanation:

We want to solve:

5 - 3tan(3x) = 0

such that:

-π< x < π

where π = 3.14

then:

-3.14 < x < 3.14

Let's solve the equation:

5 - 3tan(3x) = 0

-3tan(3x) = -5

tan(3x) = -5/-3 = 5/3

Now we can use the inverse tan function, Atan(x).

Remember that:

Atan( tan(x) ) = tan( Atan(x)) = x

Then if we apply that function to both sides, we get:

Atan( tan(3x)) = Atan(5/3)

3x = Atan(5/3)

x = Atan(5/3)/3 = 0.343

4 0

3 years ago

Write a division expression that would have a result of 28<br><br>Division ___ ÷ ___ = 28

alukav5142 [94]

Answer:

14÷2=28

Step-by-step explanation:

6 0

3 years ago

Please answer the question below. Topic: Scale drawings

ch4aika [34]

It would be 100. Hope it helps!

8 0

3 years ago

A gumball machine contains 23 green gumballs, 52 red gumballs, 34 blue gumballs,61 yellow gumballs, and 30 pink gumballs. What p

Ostrovityanka [42]

23+52+34+61+30=200
52 (red) / 200 (total) = .26
covert 0.26 to a percent= 26%
Answer: 26% of the gumballs are red

4 0

4 years ago

Read 2 more answers

Write the equation of the line given the points (2,0) and (3.-1)

Juli2301 [7.4K]

Answer:

y = -1x + 2

Step-by-step explanation:

We need to find y = mx + b

Use the following equation

$\frac{y_2-y_1}{x_2-x_1}$

Plug in the values

$\frac{-1-0}{3-2}$ = $\frac{-1}{1} = -1$

We have found the slope(m) which is -1

We have to find y-int b

Plug in any given x,y into the slope formula

-1 = -1(3) + b

-1 = -3 + b

2 = b

At last the formula is

y = -1x + 2

7 0

3 years ago