1. Marcar con rojo los pares de ángulos que sean complementarios y con verde los que sean suplementarios. A. 25º B. 155º C. 65º D. 30º E. 150º F. 15º G. 28º 2. Averiguar el valor de los ángulos a. ¿Cuál es el complemento de un ángulo a=39º? b. Se sabe la amplitud del ángulo R=143º pero se desconoce la del ángulo m, ¿Cuánto medirá m?

Answer:

x ≤ - 27

Step-by-step explanation:

[tex]\frac{x}{-9}\ge \:3\\\\\mathrm{Multiply\:both\:sides\:by\:-1\:\left(reverse\:the\:inequality\right)}\\\\\frac{x\left(-1\right)}{-9}\le \:3\left(-1\right)\\\\Simplify\\\\\frac{x}{9}\le \:-3\\\\\mathrm{Multiply\:both\:sides\:by\:}9\\\\\frac{9x}{9}\le \:9\left(-3\right)\\\\\mathrm{Simplify}\\\\x\le \:-27[/tex]

The solution of the given inequality is x ≤ -27.

Inequality is the relationship between two expressions that are not equal, employing a sign such as ≠ “not equal to,” > “greater than,” or < “less than.”.

The given inequality ( x / -9) ≥ 3 is solved as:-

( x  / -9 ) ≥ 3

Multiply both sides by ( -1 ).

-1 ( x  / -9 ) ≥ -3

x / 9 ≤ -3

x ≤ -27

Hence, the solution is x ≤ -27.

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Answer:

a=6 x=1

Step-by-step explanation:

4x1=4 4-2=2

2+6=8

Answer:

a=3 i think, sorry if i'm wrong

Step-by-step explanation:

4x-2(x+a)=8     ~parenthesis first.

4*7-14-2a=8     ~4 times 7= 28 and just bring down the rest.

28-14-2a=8      ~ add 14 to negative 14 and 8, the positive and negative 14 would cancel out each other.

28-2a=22        ~ subtract 28 from both positive 28 and 22.

-2a=-6             ~ divide by 2 on both sides.

  a=3               ~ The reason why it is 3 is because negative 2 times positive 3 equals  negative 6.

Answer:

  √89

Step-by-step explanation:

The distance formula is good for this.

  d = √((x2 -x1)^2 +(y2 -y1)^2)

  d = ((6 -(-2))^2 +(-1-4)^2) = √(64 +25)

  d = √89

The distance between the point is √89 units.

Answer:

-10

Step-by-step explanation:

g(x) = -3x^2 +4x+5

Let x = 3

g(3) = -3*(3)^2 +4*3+5

     = -3*9 +12+5

     = -27+12+5

     = -10    

Answer:

g(3) = -10

Step-by-step explanation:

g(x) = -3x^2 + 4x + 5

g(3) = -3(3^2) + 4(3) + 5

g(3) = -3(9) + 12 + 5

g(3) = -27 + 12 + 5

g(3) = -15 + 5

g(3) = -10

Answer:

2-(-3)=2+3=5

-7+4=-3

Step-by-step explanation:

Answer:

2 - (-3) is 5 because (-) × (-) is (+)

And for -7 + 4 is 3 because (-) × (+) is (-).

Answer:

[tex] \alpha + \beta = \sqrt{2} [/tex]

[tex] \alpha \beta = \frac{1}{3} [/tex]

The quadratic equation is given by

[tex]y = {x}^{2} - ( \alpha + \beta )x + \alpha \beta [/tex]

[tex]y = {x}^{2} -x \sqrt{2} + \frac{1}{3} [/tex]

Answer:

Step-by-step explanation:

[tex]1-5\left(3+2\cdot \:3\right)=-44\\\\Follow\:the\:PEMDAS\:order\:of\:operations\\\\\mathrm{Calculate\:within\:parentheses}\:\left(3+2\cdot \:3\right)\::\quad 9\\\\=1-5\cdot \:9\\\\\mathrm{Multiply\:and\:divide\:\left(left\:to\:right\right)}\:5\cdot \:9\::\quad 45\\\\=1-45\\\\\mathrm{Add\:and\:subtract\:\left(left\:to\:right\right)}\:1-45\:\\\\:\quad -44[/tex]

Answer:

-36

Step-by-step explanation:

1-5(3+2x3)

-4(3+2x3)

-4(3+6)

-12-24

-36

Hope this helps ;) ❤❤❤

Answers:

Domain = [tex][-5, -2] \cup [1,5)[/tex]

Range = [tex](-4,4][/tex]

=============================================

Explanation:

The domain is the set of allowed x value inputs. We note that the left-most point is when x = -5, and this point has a closed or filled in endpoint, so we're including this x value in the domain.

The left piece has its other endpoint at x = -2, so the interval [tex]-5 \le x \le -2[/tex] is part of the domain. We write that as [tex][-5,-2][/tex]is part of the domain's answer. The other part is [tex][1, 5)[/tex]. We include x = 1 but exclude x = 5 as there's a hole here.

Use the union symbol to glue the two intervals together and we end up with [tex][-5, -2] \cup [1,5)[/tex] as the full domain.

----------------------------

The range is the set of possible y values. The lowest point is when y = -4, but we exclude this endpoint since there's an open hole here. The highest point is when y = 4. The range is [tex]-4 < y \le 4[/tex] which we write as [tex](-4, 4][/tex]

Since there are no gaps in the range, we don't use any union symbols here. Any y value between -4 and 4 is possible, other than y = -4 itself.

Hey there! I'm happy to help!

We want to find how much more 5/6 is than 1/2. To do this, we simply subtract 1/2 from 5/6. This will show us how much more 5/6 is.

First, we multiply 1/2 by 3/3 so that the denominator is 6.

1/2×3/3=3/6

Now, we subtract this from 5/6.

5/6-3/6=2/6

We can simplify this to 1/3.

Therefore, Methuki used 1/3 scoop more of brown sugar than white sugar while making desserts for Fun Day.

Have a wonderful day! :D

Answer:

6103.07 inches ^ 3

Step-by-step explanation:

Step 1: Find the volume of the head

d = 12

r = d/2

r = 6

[tex]=\frac{4}{3} (3.14)6^{3} \\=904.78 inches^{3}[/tex]

Step 2: Find the volume of the body

d = 16

r = d/2

r = 8

[tex]=\frac{4}{3} (3.14)8^{3} \\=2144.66inches^{3}[/tex]

Step 3: Find the volume of the legs

d = 18

r = d/2

r = 9

[tex]=\frac{4}{3} (3.14)9^{3} \\=3053.63 inches^{3}[/tex]

Step 4: Add the volumes together

[tex]904.78 +2144.66+3053.63=Volume[/tex]

[tex]6103.07=Volume[/tex]

Therefore the volume of the snowman is 6103.07 inches ^ 3

We can distribute the outer x to each term inside

x(x-6) = x^2-6x

So the original equation turns into

x^2-6x = 20

Then you could subtract 20 from both sides to get everything to the same side

x^2-6x-20 = 20-20

x^2-6x-20 = 0

This quadratic equation is in the form ax^2+bx+c = 0 with a = 1, b = -6, c = -20.

The presence of the x^2 term, and having it be the largest exponent, is what makes this a quadratic.

For f function, we don't need to us the value of g function. So, 1-3x = 1-3.-1/3 =2

Answer : 2

f(-⅓) = 2

Step-by-step-explanation :

[tex]f(x) = 1 - 3x \\ f( \frac{ - 1}{3} ) = 1 - 3( \frac{ - 1}{3} ) \\ f( \frac{ - 1}{3} ) = 1 + \frac{3}{3} = 1 + 1 = 2[/tex]

Answer:

x = 10

Step-by-step explanation:

a² + b² = c²

6² + 8² = c²

36 + 64 = 100

√100 = ±10

x = 10

Answer:

10

Step-by-step explanation:

We can use the Pythagorean Theorem to find the value of x.

It states that in a right triangle, [tex]a^2 + b^2 = c^2[/tex].

A and b are the sides, while c is the hypotenuse.

We already know the measure of a and b, so we can find the measure of c easily.

[tex]6^2 + 8^2 = c^2\\\\36+64=c^2\\\\100=c^2\\\\10=c[/tex]

Hope this helped!

Answer:

The x intercept is (-15/4 ,0)

Step-by-step explanation:

To find the x intercept, set y = 0 and solve for x

y = 4x+15

0 = 4x+15

subtract 15 from each side

-15 = 4x+15-15

-15 = 4x

Divide by 4

-15/4 = 4x/4

-15/4 = x

The x intercept is (-15/4 ,0)

Answer:

1.53 £

Step-by-step explanation:

9×17 = 153p

we know this because there are 5 days left in November and 12 days in December (hence the 17).

Answer:

The correct answer would be No fine is paid if the DVD is returned by the due date, because the first 0 means it is 0 days overdue, so it is returned on time, and the second 0 means the fine would be $0

Step-by-step explanation:

Answer:

You wont have any coins left. You will have a negative number of coins because 20 x 4 = 80. 80 - 50 = 30. You will need to owe 30 coins

Answer:

The answer is $330.73.

Step-by-step explanation:

The answer is $330.73.

Step 1. Calculate simple interest: I = ?

Step 2. To get account balance add simple interest to the principal amount:

I + P = ?

Step 1. Calculate simple interest.

I = P * r * t

P - principal

r - rate

t - time period

We have:

P = $278.16

r = 2.1% = 2.1/100 = 0.021

t = 9

I = 278.16 * 0.021 * 9 = 52.57

Step 2. To get account balance add simple interest to the principal amount:

I + P = ?

52.57 + 278.16 = 330.73

the building is twenty feet

Step-by-step explanation:

Answer:

20

Step-by-step explanation:

===========================================================

Explanation:

Parallel lines never cross, so we can rule out choices B, C, and D. These choices all have segments that cross or meet somehow. Segments AB and OC don't intersect, and their extended lines do not appear to intersect either.

---------

We don't really need to use a diagram for this problem even though a diagram is handy. The reason we don't need a diagram is simply look at the letters to see if there's any repeated letters.

For instance, with choice B, the letter O shows up twice. So that must mean the two segments intersect at point O. But we can't have parallel lines intersect, which allows us to rule out choice B. The other answer choices we rule out will follow the same idea.

Only AB and OC have letters that don't show up twice.

Answer:

A) AB and OC

Step-by-step explanation:

Ok, so basically, when two lines are parallel, t means they will never touch each other no matter how long they are

for example, these two l‘s are parallel

l l

in this problem, we just have to find the lines that are parallel

finsing the lines are quite easy, just look for the first letter, in this case, A, then find the other lettter, here it is B, and there is your line!

here all the lines are marked in red, whch makes finsing each line easier

proving our answer is correct...

BO and CO makes an upside down V shape ( like a roof )

CO and CD make a v Shape

and

CD and DO make an upside down L

i hope this helped!

Answer:

[tex](-3,-12)[/tex]

[tex]x=-3, y=-12[/tex]

Step-by-step explanation:

So we have the system:

[tex]3x+y=-21\\y=4x[/tex]

To solve this, we can do some substitution. Substitute the y in the first equation for the 4x in the second:

[tex]3x+y=-21\\3x+(4x)=-21[/tex]

Combine like terms:

[tex]7x=-21[/tex]

Divide both sides by 7. The left side cancels:

[tex](7x)/7=(-21)/7\\x=-3[/tex]

So we determined that x is -3. Now, plug this number back into the second equation:

[tex]y=4x\\y=4(-3)=-12[/tex]

So the solution is:

[tex](-3,-12)[/tex]

Answer:

[tex]\Large \boxed{x=-3 \ } \\ \\ \Large \boxed{y=-12}[/tex]

Step-by-step explanation:

3x + y = -21

y = 4x

Substitue y = 4x in the first equation.

3x + 4x = -21

Combine like terms.

7x = -21

Divide both sides by 7.

x = -3

Let x = -3 for the second equation.

y = 4(-3)

Multiply.

y = -12

The solution for the system of equations is x = -3 and y = -12.

Complete the squares to get

[tex]x^2+y^2=2x-6y+6[/tex]

[tex]\implies(x^2-2x+1)+(y^2+6y+9)=16[/tex]

[tex]\implies(x-1)^2+(y+3)^2=4^2[/tex]

which is the equation of a circle centered at (1, -3) with radius 4, and thus with area 16π.

The area of the region enclosed in the graph x²+y² =2x-6y+6 is 50.26 square units.

The area of the circle can be calculated by the product of π times square of the radius or the product of π/4 times square of diameter.

Area of the circle= A= πr²= πd²/4

where r is radius of the circle and d is diameter of the circle.

Here given that

the equation of circle is given by

x²+y² =2x-6y+6

⇒ x²+y² -2x-6y = 6

⇒ x²-2x+y²-6y = 6

Adding 1 on both sides

⇒ x²-2x+1+y²-6y = 6+1

Adding 9 on both sides

⇒ x²-2x+1+ y²-6y+9 = 6+1+9

⇒x²-2x+1+ y²-6y+9 = 16

⇒ (x-1)² + (y-3)²= 4²

which is similar to equation of the circle

(x-a)² + (y-b)²= r²

This is the equation of the circle in center and radius form where (a,b) is the center of the circle and r is the radius of the circle.

here in the equation of the circle the center of the circle is (1,3)

radius is 4 units.

then the area of the circle is = πr²= π4²= 16π= 50.26 square units.

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Answer:

[tex]\Huge \boxed{\mathrm{0.45}}[/tex]

Step-by-step explanation:

1/5 in decimal form is 0.2

1/4 in decimal form is 0.25

1/5 + 1/4

0.2 + 0.25 = 0.45

Answer:

1/5 + 1/4 = 9/20.

9/20 = 0.45

Answer: $112.50 ; $4612.5

Step-by-step explanation:

a) Determine how much interest Christine paid at the end of 1 year.

This will be:

Simple interest = PRT/100

where

P = principal = $4500

R = rate = 2.5%

T = time = 1 year

Interest = (4500 × 2.5 × 1)/100

= 11250/100

= $112.50

b) Determine the total amount Christine will repay the bank at the end of 1 year.

Total amount = Principal + Interest

= $4500 + $112.50

= $4612.5

Answer:

213 x 112

Step-by-step explanation:

You have to multiply the recipe with the amount of times it's made.

Answer:

213 cups of beans.Keith is making 112 times the recipe.

Step-by-step explanation:

Answer:

18

Step-by-step explanation:

-3a² - b³ + 3c² - 2b³

= -3(2)² - (-1)³ + 3(3)² - 2(-1)³

= -3(4) - (-1) + 3(9) - 2(-1)

= (-12 + 1 )+ (27 + 2)

= -11 + 29

= 18

Answer:

18

Step-by-step explanation:

a = 2, b = -1, c = 3

-3a^2 - b^3 + 3c^2 - 2b^3

-3(2^2) - (-1^3) + 3(3^2) - 2(-1^3)

-3(4) - (-1) + 3(9) - 2(-1)

-12 + 1 + 27 + 2

-12 + 30

18 <===

Answer:

30 terms

Step-by-step explanation:

The n th term of an AP is

[tex]a_{n}[/tex] = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here d = 5 and a₃ = 13, thus

a₁ + 2d = 13

a₁ + 2(5) = 13

a₁ + 10 = 13 ( subtract 10 from both sides )

a₁ = 3

Thus

[tex]a_{n}[/tex] = 3 + 5(n - 1) = 148 ( subtract 3 from both sides )

5(n - 1) = 145 ( divide both sides by 5 )

n - 1 = 29 ( add 1 to both sides )

n = 30

The progression has 30 terms

Answer: 6 cm

Step-by-step explanation:

Given: The ratio of the areas of two similar  parallelograms is 4:9.

To find : The height of the  bigger one if the smaller is of height 4 cm.

Let h be the height of the  bigger one.

Since the areas of similar figures are proportional to the square of their corresponding sides.

Then, [tex]\dfrac{4^2}{h^2}=\dfrac{4}{9}[/tex]

[tex]\dfrac{16}{h^2}=\dfrac{4}{9}\\\\\Rightarrow\ h^2=\dfrac{9}{4}\times16\\\\\Rightarrow\ h^2=36\\\\\Rightarow\ h= 6\ cm\ \ \ \ \text{[ height cannot be negative.]}[/tex]

Hence, the height of bigger parallelogram = 6 cm

Answer:

- 55

Step-by-step explanation:

a = −6, b = −5

Answer:

see below

Step-by-step explanation:

x⁵ - 8x⁴ + 22x³ - 26x² + 21x - 18 = 0

x = 2,  x = ± i,   x=3  with multiplicity 2

-----------------------------------------------------

x⁴ - 5x³ + 7x² - 5x + 6 = 0

x = 2,   x=3,   x = ± i

--------------------------------------------------------

-1 + 4i    =  4 + i

    i

--------------------------------------------------------

x³ - 26x² + 21x - 18 = 0

x = ± 2i,   x = 3/2

--------------------------------------------------------

(1 + i) (-3 - 4i)

= 1 - 7i

--------------------------------------------------------

6.

(-5 + 2i) + (3 - 6i)

= -2 -4i

--------------------------------------------------------

7.

x⁴ + 5x² + 4 = 0

x = ± i ,     x = ± 2i

--------------------------------------------------------

8.

(7 - i) - (-5 + 6i)

= 12 - 7i

--------------------------------------------------------

9.

(4 - i) (4 + i)

= 17

--------------------------------------------------------

10.

(3 + 8i) (4 - 3i)

= 36 + 23i