Determine,se existir,a inversa da matriz abaixo:
A= (1 2)
(1 3)

Answers

Answer 1

Answer:

which principle prevents a brach from abusing  its power

Step-by-step explanation:


Related Questions

what is the area of a rectangle that is 3/4 ft wide and 1/12 ft long?

Answers

Answer:

3/8

Step-by-step explanation:

because to find the area you multiply both numbers so 1*3 is 3 and 2*4 is 8 so your answer should be 3/8

Harry put blue and green marbles in a bag. Exactly 3/4 of the marbles in the bag are blue. Which of the following could be the total number of marbles in the bag.
A. 3
B. 6
C. 7
D. 8

Answers

Answer:

D

Step-by-step explanation:

Because when u multiply 3/4 times A,B,C it gives you a decimal, when u multiply 3/4 by 8 you get 6 a whole number.

The total number of marbles in the bag could be (d) 8

How to determine the possible total?

We have:

Blue proportion = 3/4

This means that the green proportion is

Green proportion = 1 - 3/4

Evaluate

Green proportion = 1/4

Express as ratio

Blue: Green = 3/4 : 1/4

Simplify

Blue: Green = 3 : 1

Add the ratios

Total = 3 + 1

Total = 4

The above means that the total number of marbles in the bag is a multiple of 4

i.e. 4, 8, 12, 16, 20......

Hence, the total number of marbles in the bag could be (d) 8

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PLEASE HELP ME
- The value of y varies directly with x. If x= 4,
then y= 32. What is the value of x when y= 176?

Answers

Answer: Wouldn't that make it x=44

Step-by-step explanation:

I just divided 176 by 4  because it said the value of y varies directly with x. So just used the rule they used i guess.

Which of the following situations can be modeled by the expression -8 + 35?

While Shawn was sleeping, the temperature decreased by 8°F. If the temperature was 35°F when Shawn went to bed, what was the temperature when Shawn woke up?

When Shawn woke up, the temperature was -8°F. By noon, the temperature had increased by 35°F. What was the temperature at noon?

None of the above.

When Shawn woke up, the temperature was -8°F. By noon, the temperature had increased to 35°F. By how much did the temperature change?

Answers

Answer:

The second one

A college accepted new applicants, of whom 56% were male and 44% were female. The board of directors was not pleased that males were being accepted at a greater percentage than females. A private company investigated and found each department accepted a greater percentage of females over males. What may make this claim possible?

Answers

Answer:

Simson paradox

Step-by-step explanation:

In Simpson paradox, the trend that appears in the combined data reverses or disappears in the results of the several individual groups that make up the combined data

In the question, given that the percentage of female applicants accepted = 44% while the percentage of male applicants = 56%, and that the private company found that each department accepted a greater percentage of females over males

The above claim can occur when there is a confounding variable, which is the number of applications from female or male

The percentage used or the data provided to by the private company in each department are percentage in proportion of number of accepted females to total number of female applicants and percentage in proportion of number of accepted males to total number of male applicants, whereby, when there are fewer number of female applicants to each department and more were accepted, their percentage will be larger than the percentage of the male applications that have a lower percentage but larger number of applications, such that the accepted male applicants still outnumber the female when that total number of applications are considered.

A transversal crosses a pair of parallel lines to create a pair of same-side interior angles with the measurements of x° and (x−52)°. What is the value of x?

Answers

Answer:

x=116°

Step-by-step explanation:

If a transversal crosses a pair of parallel lines to create a pair of same-side interior angles with the measurements of x° and (x−52)°, then the sum of those angles is equal to 180°.

ATQ,

x°+(x-52)°=180°

2x=180°+52

⇒2x=232

⇒x=116°

So, the value of x is 116°

Line ST and point V are shown on the graph. Line WW is to be drawn on the graph such that it is perpendicular to line ST. If the coordinates of point Ware (-1, y), what is the value of y?
-5
2
3
-7

Answers

Answer:

3

Step-by-step explanation:

We can use the formula of slope to find this answer.

The formula to find the slope is y2-y1/x2-x1.

The slope of line ST is 1/5: 2-0/5-(-5);   2/10=1/5

We know that for two lines to be perpendicular, they have to have reciprocal opposite slopes. For example, if the slope of a line is 2/1 then the slope of a line perpendicular is -1/2.

Therefore, the perpendicular line should have a slope of: 1/5------>-5

To find which answer it is, follow the steps below:

y2-y1/x2-x1

plugin known values

-2-y1/0-(-1)

-2-y1/1

In order to make this -5, y1 needs to be 3

-2-3/1=-5

3 is the correct value

The value of y is 3.

What is slope?

The slope of a line is a measure of its steepness.

Given:

Ware( -1, y)

Now,

slope of line ST =2-0/5-(-5)

slope=1/5

As two lines to be perpendicular, they have to have reciprocal opposite slopes.

Thus, the perpendicular line slope =-5

Now, y2-y1/x2-x1

= -2-y1/0-(-1)

= -2-y1/1

= -2-3/1

=-5

hence, the value of y is 3.

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What is the image point of (9,4) after a translation left 5 units and up 1 unit?​

Answers

Answer:

(4,5)

Step-by-step explanation:

x/20=2/8
x=__
pls explain the steps

Answers

Answer:

Today: Thursday, 15 October 2020

Hour: 04.09 WIB (in Indonesian)

____________________________

x/20 = 2/8

20 × 2 = 8 × x

40 = 8x

x = 40/8

x = 5

can someone please help me with this question​

Answers

Answer: 140 ft^2

Step-by-step explanation:

Triangle:

A = 1/2bh

A = 1/2(6 • 4)

A = 1/2(24)

A = 12

Square:

A = bh

A = 16 • 8

A = 128

Add them

128 + 12 = 140 ft^2

Answer:

7.21 ft

Step-by-step explanation:I don't know if i did it right but this is what I got.

Select all of the situations below that can be modeled by the expression 4 + 3x.
Four more than three and a number.
Four more than three times a number.
The sum of three times a number and four.
The sum of the product of four three, and a number.
The sum of four and the product of three and a number.​

Answers

Answer:it’s b

Step-by-step explanation:

I just did it on ede

Is this function linear? Why or why not? PLEASE LOOK AT THE PHOTO!! I really need it right now:)​

Answers

Answer:

yes

Step-by-step explanation:

yes

yes, no x values or y values repeat

1. A hexagon is inscribed in a circle. If the difference between the area of the circle and the area
of the hexagon is 24 m”, use the formula for the area of a sector to approximate the radius
of the circle. Give an exact answer( doesn't have to be rationalized) and round to 2 decimals.

Answers

Answer:

The radius, r ≈ 6.55 m

Step-by-step explanation:

The given parameters are;

An inscribed hexagon in a circle

The area of the hexagon = Area of the circle - 24 m²

The formula for the area of the circle = π·r² = π × r²

The area of each of the six equilateral triangle in the hexagon = √3/4 × r²

Where;

r = The radius of the circle

The area of a sector of a circle in which the equilateral triangle is inscribed = 60/360×π·r² = 1/6×π·r² = 1/6 × Area of the circle

Given that the sector of the circle in which one of the six equilateral triangles of the hexagon is inscribed is 1/6 the area of the circle, the difference in area between the equilateral triangle and the sector = 24/6 = 4

Therefore, the difference in the area between the sector of the circle and the area of the equilateral triangle = 4 m²

We then write;  1/6×π·r²- √3/4 × r² = 4

r²·(1/6×π- √3/4) = 4

r² = 4/(1/6 ×π - √3/4) = 48/(2·π -3·√3)

r = √(48/(2·π -3·√3) = 6.55 m to 2 decimal places

The radius, r ≈ 6.55 m.

2=-6n+4m

how do you solve this ?

Answers

Answer:

n =3 and m = 5

Step-by-step explanation:

negative × positive = negative

So -6 × 3 = -18

4 × 5 = 20

negative + positive = positive

So -18 + 20 = 2

N=3 and i think 5 is for m i might be wrong

3. Simplify the polynomial.
Answers must be in standard
form.
-2(4x2 + 5x) + x(x2 + 6x)

Answers

Answer:

Step-by-step explanation:

2. 1. Are the following lines parallel? Explain using slopes. ty (0, 3) (-6, 1) 1 (4, 1) 2 4 6 0 2 62 (0, -2)​

Answers

Answer:

confused

Step-by-step explanation:

5 pounds of oranges cost $7. How much does 1 pound of oranges cost? Explain how you solved.

Answers

Answer:

$1.40

Step-by-step explanation:

If It's $7.00 for 5 pounds of oranges you would have to take the $7.00 and divide it by the number of pounds purchased which is 5.

$7.00 / 5 = $1.40

The table represents a linear function. What is the slope of the function? O -10 16 O5 O5 O10 24​

Answers

Answer: 5

Step-by-step explanation:

I got it right on the test.

The slope of the function is 5.

The correct option is C.

What is Slope?

A line's slope is determined by how its y coordinate changes in relation to how its x coordinate changes. y and x are the net changes in the y and x coordinates, respectively. Therefore, it is possible to write the

change in y coordinate with respect to the change in x coordinate as,

m = Δy/Δx where, m is the slope

We can take two points from the table as (-4, -16) and (-2, -6).

So, slope of the function is

= (-6 - (-16))/ (-2 - (-4))

= (-6 + 16)/ (-2 +4)

= 10 /2

= 5

Thus, the required slope is 5.

Learn more about Slope here:

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Plzz answer fast I know what it is but I need to double check!!!!!

Answers

Answer:

it's B

Step-by-step explanation:

just solve them and they match

Answer:

If your thinking B is the answer then you are right

Y=mx+b
Solve for b
Solve for m
Solve for x

Answers

Subtract b from each side to get
y−b=mx
Next, divide each side by x to get y−b/ x= m
.

Answer:Let's solve for b.

Y=Mx+b

Step 1: Flip the equation.

Mx+b=y

Step 2: Add -mx to both sides.

B=-mx +y

lol I can’t be bothered to solve for m so here’s the answer

solve for M vv

M= -b+y / x  -b+y are the numerators and x is the denominator

Solve for x

Can’t be bothered to show work so here you go

X=-b+y/m   M is the denominator and -b+y are the numerators

yea you can Thank me later

summary of scientific notation ​

Answers

Answer:

Scientific Notation is making a huge number smaller, using exponents. A number like 800000 can be shortened with Scientific Notation. Example:

8 × [tex]10^{5}[/tex]

Step-by-step explanation:

what is 5x10^-7 as a decimal

Answers

AnsweStep-by-step explanation:

PLease please please help quick

Answers

Answer:

B

Step-by-step explanation:

Same as last. multiple 8 into the entire equation.

Answer:

-80x+28y-56

4(-20x+7y-14)

Step-by-step explanation:

There are two approaches to solving the equation -3x + 10 = 4x - 20

Subtract 4x from both sides. OR Add 3x to both sides.

–7x + 10 = –20 OR 10 = 7x – 20

Solve the equation using both approaches.

What is the solution?

Answers

the same equation but subtract 2-9-/64/7-8

4. Which of the following could be the areas of the three squares shown?

Answers

Answer:

Option (A)

Step-by-step explanation:

Three squares shown in the figure are formed on the sides of the given right triangle.

By Pythagoras theorem,

(Hypotenuse)² = (Leg 1)² + (Leg 2)²

Area of the square on the hypotenuse = Area of the square on the leg 1 + Area of the square on leg 2

Option (A).

95 = 40 + 55

True.

Option (B).

45 ≠ 35 + 25

False.

Option (C).

100 ≠ 10 + 10

False.

Option (D).

1200 ≠ 40 + 30

False

Therefore, Option (A) shows the areas of three squares.

Answer plsssssssssssssss

Answers

Answer:

x^2

Step-by-step explanation:

This equation is basically x^(4-2), based on the properties of dividing exponents. so, if you simplify, you   get x^2

A company that manufactures dishwashers is testing their latest product to see how long it takes to cool down once a cycle is complete. The function, f(x) = 360 - 15x, represents the cooling cycle, where x is equal to the number of minutes and f(x) is equal to the temperature of the dishwasher after x minutes.

Answers

Step-by-step explanation:

Given that the function for the temperature of the dishwasher is

f(x) = 360 - 15x

We are told that x represents the number of minutes it takes to cool down.

with a given/known value of x we can predict the temperature of the dishwasher.

Say x=12 minutes, we can tell what the temperature will be after 12 minutes

by plugin in the value of x=12 in the expressions for the temperature

f(x) = 360 - 15(12)

f(x) = 360 - 180

f(x) = 180

The temperature after 12 minutes will be 180°

write the question of a line perpendicular to y=2x-5 that passes through point (2,-5)

Answers

Answer:

Can you guys please help me?

Step-by-step explanation:

You guys seem to be older so may you please help?

I am young and in 7th grade so my problems shouldn't be that hard.

Please help! :(
Its a line and transversal, i'm just super confused. :(

Answers

Answer:

M=112

N=180-112=68

V=E

E=180-88=92

R=G

G=88(opposite angle)

the sum of three consecutive even integers is 30 more than the smallest integer. Find the largest integer.

Answers

Answer:

10 1/4

Step-by-step explanation:

Assume x as the smallest integer.

Since it is consecutive, you have to add 1 in order to get the next integer.

Equation:

x+x+1+x+2=x+30

x=8 1/4

You need to add 2 to get the largest integer.

So, 8 1/4 + 2 = 10 1/4

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