O número complexo 3−2
4−3 equivale a um número real.
O valor real de é:
(A) 8
9
.
(B) 9
8
.
(C) 3
4
.
(D) 4
3
.
(E) − 9
8

Answer:

I say addition in both since there is + between terms

Hope this helps...

Step-by-step explanation:

Tell me if it's correct

Answer:

22

Step-by-step explanation:

Answer:

22

Step-by-step explanation:

22 add 5 subtract 4 add 7 and subtract 8

Answer:

2/4 3/6 and 4/8

Step-by-step explanation:

Answer:

How to add a great answer

How to add a great answer

Step-by-step explanation:Determine if the question posed is a statistical question (yes) or not (no). How many students passed the math test?Bună ziua. La pagina 169 aveți o altă piesă de teatru. Vă rog să o citiți și să răspundeți la întrebările 1,2,4,7,8/ pag. 170.

Sper că vă scrieți toate lecțiile în caiet! Sunt copii care încă nu mi-au trimis nicio temă. Vă rog să vă mobilizați! Când ne întâlnim vă verific caietele. Mult spor!

Answer:

144

Step-by-step explanation:

8x6=48

48 divided by 2=24

24x2=48

4x10=40

8x4=32

4x6=24

add them all together so 48+40+32+24=144

The triangular prism is a 3-d shape, and the total surface area of the triangular prism is 144 cm²

The surface area of a triangular prism is:

Area = bh + (b + s₁ + s₂) * l

The parameters in the triangular prism are:

So, we have:

Area = 8 * 6 + (8 + 10 + 6) * 4

Evaluate the sum of product

Area = 144

Hence, the total surface area of the triangular prism is 144 cm²

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Answer:

(6,1)

Step-by-step explanation:

Just look for the terms with x and y in them. Divide their coefficients by two, and multiply by -1. And then put them in an ordered pair.

So in this case, -12x --> 6 and -2y --> 1

Obviously the more orthodox way would be to actually complete the square, but I'm lazy, this way is faster, and since this seems to be multiple choice, as long as you have the correct answer, it shouldn't matter.

The required centre will be at (6,1)

The standard equation of circle is expressed as:

x^2+y^2+2gx+2fy+c = 0

where (-g, -f) is the centre of the circle

Given the equation x^2 + y^2 – 12x – 2y + 12 = 0

Compare with the general to have;

2gx = -12x

g = -6

2fy = -2y

y = -1

Since centre is at (-g, -f), hence the required centre will be at (6,1)

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Answer:

576-8 hours

-11 hours

Cross multiply

=576×11=6336

6336÷8=792

so 792 miles

Answer:

f(x) = -2x + 8, x < 2

g(x) = 2x, x 》2

Step-by-step explanation:

|x - 2| is:

x - 2, for x 》2

-x + 2, for x < 2

For x < 2,

f(x) = 2(-x + 2) + 4

f(x) = -2x + 8

For x 》2,

g(x) = 2(x - 2) + 4

g(x) = 2x

The two linear functions for the given mode function y = 2|x - 2| + 4 will be y = -2x + 8 and y = 2x.

A straight line on the coordinate plane is represented by a linear function.

The formula for a linear function is f(x) = ax + b, where a and b are real values.

In another word, a linear function is a function that varies linearly with respect to the changing variable.

As per the given mode function,

y = 2|x - 2| + 4

For x < 2 , |x - 2| = -(x - 2)

y = -2(x - 2) + 4

y = -2x + 4 + 4

y = -2x + 8

For x > 2, |x - 2| = x - 2

y = 2(x - 2) + 4

y = 2x - 4 + 4

y = 2x

Hence "The two linear functions for the given mode function y = 2|x - 2| + 4 will be y = -2x + 8 and y = 2x".

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Answer:

(4/3) π units²  or  (b):  33.5 units²

Step-by-step explanation:

The area of a sector of a circle of radius r and central angle Ф is a fraction of the total area of the circle:  (Ф/[2π]) * πr².

Here we find the area of the circle to be A = π (8 units)².

                                                    60

Multiply that by the fraction  ------------- , or 1/6

                                                    360

We get:  (1/6) (π (8 units)² = (4/3) π units², or approximately 33.5 units²

Answer:

Last year we had M students.

This year we have N students.

Now, the question ask "by what percentage the number of students grow".

So we are considerating a growth, this means that we must think that M as the 100%.

Then we have that N - M is the difference between the students of last year and this year.

this means that this year we have N - M more students that last year, so the percentage of growth is:

((N - M)/M)*100%

Now you need to replace the values for N and M.

You also can notice that if N is smaller than M, you will have a negative percentage, this means that instead of a growth, we have a decrease in the number of students.

Answer: y = (1/2)*x - 1

Step-by-step explanation:

a linear relationship is something like:

y = a*x  + b, lets find the values of a and b.

We have that the output (y) must be 1 less than half of the imput (x), then our relation is:

y = (1/2)*x - 1

Answer:

7.8025

Step-by-step explanation:

You get the circumfence formula 2 * pi * r

since you are looking for the radius divide 49/2 then the answer you get divide it by pi and then you have your radius

i hope this helped<33

[I'm using 22/7 as pi in this question, for the sake of convenience, since the value of pi to be used isn't given.]

Circumference = [tex]2\pi r[/tex]

49 = 2 x [tex]\frac{22}{7}[/tex] x r

r = 49 x [tex]\frac{7}{44}[/tex]

r = approx. 7.8 yards

Answer:

2

Step-by-step explanation:

Answer:

78

Step-by-step explanation:

The IQR is quartile 3 - quartile 1. First, we need to find the mean of the dataset, which is 50 -- the fifth number. Then, the median of the dataset on the left of the fifth number is the first quartile, and the median of the dataset on the right is the third. We get Q1 to then be halfway between 30 and 50, or 40, and Q3 to be halfway between 56 and n, so Q3 = (56+n)/2. Since we need Q3-Q1=27, or (56+n)/2-40=27, we have (56+n)/2=67 and 56+n=134, so n = 134-56=78

Answer:  The height is 15 cm.

Step-by-step explanation:

We have to know the can is in a shape like a cylinder so  we will use the volume of a cylinder formula to find the height.Which is  πr^2*h

We have to know  8 is the diameter so the the radius is 4.

3.14 * 4^2 * h = 753.6

3.14 * 16 * h = 753.6

50.24 * h = 753.6

Divide 753.6 by 50.24 to find the height

The height is 15.

Answer:

Step-by-step explanation:

6.3x103 kg sand x 1x103 g/kg x 1 grain sand/7x10-5 g sand = 9x1010 grains of sand = 90 billion grains of sand.

90 billion grains of sand.

(6.3 x  103kg) (1 x 103g/kg x 1 )

DIVIDED by  7 x 10 - 5 g sand  

= 9 x 1010 grains of sand

Answer:

Step-by-step explanation:

The line that best fits is

[tex]y=-0.03x+3.45[/tex]

Where [tex]x[/tex] is days and [tex]y[/tex] is time in minutes. So, we have [tex]x=15[/tex], replacing this in the equation and solving for [tex]y[/tex], we have

[tex]y=-0.03(15)+3.45=-0.45+3.45=3[/tex]

Therefore, on the 15th day his best time for the day is 3 minutes.

Answer:

33.4% of 104 is equal to 34.736

Answer:

c = [tex]\frac{1}{10}[/tex]

f= 1500

Step-by-step explanation:

Tenemos la siguiente ecuación

[tex] C = f+cm[/tex]

Tenemos los siguientes valores para m=15000, c = 3000 y para m = 20000, c=3500. Es decir, tenemos las siguientes ecuaciones

[tex] 3000=f+c15000, 3500=f+c20000[/tex]

Si restamos la segunda ecuación de la primera, tenemos que

[tex] 3500-3000 = f-f+(20000c-15000c)[/tex]

Luego

[tex] 500 = 5000c[/tex]

Entonces [tex] c = \frac{500}{5000} = \frac{1}{10}[/tex]

Si tomamos la primera ecuación, tenemos que [tex]3000-\frac{15000}{10} = f[/tex]. Es decir,

[tex] 3000-1500 = f = 1500[/tex]

Esta solución, al plantear 2 ecuaciones y dos incógnitas, plantea un sistema dos por dos.

Answer:

-3 is the coefficient of x here

Step-by-step explanation:

The first thing to do here is to open the brackets.

(x-5)(x + 2) = x(x + 2)-5(x + 2)

x^2 + 2x -5x -10

x^2 -3x -10

When we say the coefficient of x, we mean the value by which x only is multiplied by in the equation. That would be -3

This must not be confused with the coefficient of x^2 which is entirely different from the coefficient of x

Answer:

The ferris wheel travelled 434.717 ft.

Step-by-step explanation:

Assuming that the ferris wheel is a perfect circle, then it's height is the same as the diameter of the circle, therefore it's radius is:

radius = height/2 = 246/2 = 123 ft

The distance travelled by the ferris wheel is the same as the length of the arc created by a angle of (9pi/8). The length of an arc is given by:

length = r*(angle in radians)

length = 123*(9pi/8)

length = 434.717 ft

The ferris wheel travelled 434.717 ft.

Answer:

x=6/5

Step-by-step explanation:

Answer:

Step-by-step explanation:I don't say you have to mark my ans as brainliest but friend if it has really helped you plz don't forget to thank me...

Answer:

Area = 16.8 * 7 / 2 = 58.8 ft2

Step-by-step explanation:

Have

18.2^2 = 7^2 + a^2

-> a^2 = 18.2^2 - 7^2

-> a^2 = 282.24

-> a = 16.8

Area = 16.8 * 7 / 2 = 58.8 ft2

Answer:

850

Step-by-step explanation:

We have, 70% × x = 595

or,  

70

100

× x = 595

Multiplying both sides by 100 and dividing both sides by 70,

we have x = 595 ×  

100

70

Answer:

Your answer is 416.5

Step-by-step explanation:

You take your first number 595 and multiply it by .7

There ya go hope it helped

Answer:

4x^2+1.5y*2x

Step-by-step explanation:

the area of square equale wide^2

the area of traingle = 1/2 of 3y *hight (2x)

Answer:

4into^2+1.5y*2^

Step-by-step explanation:

Answer:

It 2/5.

Step-by-step explanation:

Just did the question :)

The experimental probability of flipping a head after five flips of a coin can be calculated by finding the ratio of the number of times a head appears to the total number of flips.

In this case, since there are two possible outcomes - a head or a tail - the total number of flips is five. Let's say, after five flips, a head appears three times. The experimental probability of flipping a head would be calculated as 3 (number of heads) divided by 5 (total number of flips), which equals 0.6.  

Therefore, the experimental probability of flipping a head after five flips of the coin is [tex]0.6, or 60[/tex] %. It is important to note that the experimental probability may not accurately represent the theoretical probability, as it is based on a limited number of trials. The theoretical probability of flipping a head is 1/2, which is [tex]0.5 or 50[/tex]%.

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