Calcula a través de sustitución, igualación, reducción y gráficas:

3x + 2y = 7 5x + 3y = 11
4x - 3y = -2 3x + y = 5

*Este problema se puede resolver de una sola forma o método (sustitución, igualación, reducción o en gráficas).

PROBLEMA:

En el cajero de un banco entrega a un cliente 40 monedas de 50 centavos y de un peso si lo que entrego importa $32 pesos, ¿cuántas monedas hay de cada denominación?

**SI NO TE SABES LA RESPUESTA POR FAVOR EVITAME EL QUE TE REPORTE Y NO RESPONDAS OTRRA COSA INADECUADA GRACIAS**

Answers

Answer 1

Answer:

2 different problems?


Related Questions

Doug did this work to solve an equation. Did he make an error? 7x-8=-x-(12)​



HURRY PLZ!!!

Answers

Answer: What error is there, the answer to the equation is x= -1/2

Answer:

Step-by-step explanation:


HELP 10 points !!!!!!!




Answers

Answer:

B

Step-by-step explanation:

Answer:

84 degrees

Step-by-step explanation:

(6x - 30) + 96 = 180

6x 66= 180

6x= 114

x=19

6(19) - 30 = 114 - 30 = 84

(6x - 30) = 84 degrees

Hope this helps!

If you have a square with a perimeter of 18 inches, what is the area of the square after
scaling it by 7? Round to the nearest tenth is needed.

Answers

Answer:

992.3 in^2 to the nearest tenth.

Step-by-step explanation:

The new perimeter will be 7*18 = 126 inches.

So the side of the new square will be 126/4 = 31.5 inches,

and  it's area = 31,5^2

= 992.25

Jim wants to put carpet in four identical rooms. Each room is 14 ft by 20.5 ft. A
roll of carpet will cover 200 square feet. How many rolls will he need? *
3 rolls
4 rolls
5 rolls
6 rolls

Answers

Answer: Jim will need 6 rolls

Step-by-step explanation: 14*20.5 is 287 I rounded 287 to 300 and then muttplied 300 by 4 and got 1200 that would be 6 rolls


Find the equation of the line that contains the point ( - 1. - 4) and is parallel to the line 2x + 3y = 5

Answers

Answer:

Answer: 2x+3y=-14

Y needs to be changed in order to maintain parallelism

Good luck!

RT and UW are parallel lines. Which angles are vertical angles?​ help asap

Answers

Answer:

139 degrees

Step-by-step explanation:

a shipping crate is a perfect cube with volume of 2,197 cubic feet. the ceiling of the warehouse is 14 feet high. will the crate fit in the warehouse explain why

answer and i’ll make your brainliest

Answers

Answer:

yes it will be able fit through

Step-by-step explanation:

simply divide 2197 and 3 because you need to multiply 3 number to get volume. For this you divide by 3. you should get 732 ft. This is the height. It will be more than enough to fit through

Jessica can walk 2 1/2 miles in 3/4 of an hour. What is her speed in miles per
hour?

Answers

Answer:

3 1/3 miles

Step-by-step explanation:

Find the unit rate. 2 1/2 is the numerator because distance is usually the numerator when it comes to unit rates. 3/4 is the denominator.

can a system of linear equation have exactly 2 solutions ? why or why not?

Answers

Answer:

Under normal circumstances a system of two linear equations can have 0, 1 or infinitely many solutions.

Step-by-step explanation:

what is the anwser
-4+3(x+4)=-4+5x

Answers

-4 + 3(x+4) = -4 + 5x
-4 + 3x + 12 = -4 + 5x
8 + 3x = -4 + 5x
(8+4)= (5x - 3x)
12 = 2x
So x = 6.

Answer:

x = 6

I hope this helps!

Does anybody know what 2+3 is

Answers

The answer is 5 you can also use your fingers no I’m not calling you dumb I’m just saying you can

If Sophia earns $234.27 for working 9 hours in a day, how much does she earn per hour?

Answers

Answer:

$26.03

Step-by-step explanation:

$234.27/9=$26.03

I need help, -3x+9+4x=10 just wondering if the answer is X=1

Answers

Answer:

it's correct good job :)

Answer:

Step-by-step explanation:

Answer:  Fortunately, you don’t have to prove that x or y must be 1 or -1 in order for x*y to not be an element of G.

You only need to prove that x*y is an element of G for any x,y in G.  (That’s what it means for * to be an operation on G.)

I haven’t thought yet about how to prove that, but let me give you some thoughts off the top of my head.

We know -1 < x, y < 1.  We must show -1 < (x + y) / (xy + 1) and (x + y) / (xy + 1) < 1.

First, let’s show that -1 < (x + y) / (xy + 1).

I want to multiply xy + 1 to both sides, but we need to know whether it’s positive or not, so we know whether to reverse the inequality.

Well, -1 < x, y < 1 implies that xy > -1, which implies that xy +1 > 0.

So we must show that -(xy + 1) < x + y.

That is, let’s show that 0 < x + y + xy + 1.  (I don’t know if this is going anywhere useful; I’m just playing around with algebra.)

Can someone please find out what x is?

Answers

The answer would be x=2

Answer: x = 2

Simplify and Distribute

(−5)(4x)+(−5)(−2)=(−2)(3)+(−2)(6x)

−20x+10=−6+−12x

−20x+10=−12x−6

Adding 12x both sides.

−20x+10+12x=−12x−6+12x

−8x+10=−6

Subtract 10 both sides

−8x+10−10=−6−10

-8x = -16

Then divide both sides by 8

-8x/8 = -16/8

x=2

Find f (h(-5))
f (x) 9x - 5
g(x) - 3x
h(x) 2x2

Your answer:​

Answers

hi

You are making  f ° h  

f(x) = 9x-5

h(x) = 2x²  

You must first calculate   h(-5)   :     so remplace  x  by -5 in h :

h(-5) = 2 (-5)² =  2* 25 = 50

then apply  f(x) to result  :   f(50) = 9 *50 -5 = 450 -5 = 445  

If someone gives the correct solution will give brainiest and a lot of points.
The Domain is correct.

Answers

Answer: x = 0.1 and x = 1

Step-by-step explanation:

Answer:

x = 9

Step-by-step explanation:

3 log₃ₓ x = 2 log₉ₓ x²3 log x / log 3x = 4 log₉ₓ x3 log x / log 3x = 4 log x / log 9x3 log 9x = 4 log 3x3 log 9 + 3 log x = 4 log 3 + 4 log xlog x = 3 log 9  - 4 log 3log x = 3 log 9 - 2 log 9log x = log 9x = 9

3.05 Quiz: Congruent Polygons and Their Corresponding Parts. Pls help ;-;

Answers

Answer:

The correct options are presented as follows;

ΔABC is reflected across the y-axis to become ΔA'B'C' is rotated 90° counterclockwise about the origin to become ΔA''B''C''. Because the transformations are rigid transformations the preimage and image are congruent

Step-by-step explanation:

The coordinate of the preimage point A = (-2, 1)

The coordinate of the image point A' = (2, 1)

Similar for points B(-5, -2) and B'(5, -2), C(-3, -4) and C'(3, -4)

Which is equivalent to a reflection across the y-axis

Similarly, we have;

The coordinate of the preimage point A' = (2, 1)

The coordinate of the image point A'' = (-1, 2)

Which is equivalent to rotation of 90° counterclockwise which involves transforming a preimage (x, y) to an image (-y, x)

Similar for points B and B', C and C'

Therefore, because the reflection transformation, and the rotation transformation, are rigid transformation, the figures of the preimage and the image are congruent

Therefore, we have;

ΔABC is reflected across the y-axis to become ΔA'B'C' is rotated 90° counterclockwise about the origin to become ΔA''B''C''. Because the transformations are rigid transformations the preimage and image are congruent.

distribute -(6 - 4p) TWELVE POINTS FOR YOUR ANSWER!!

Answers

Answer:

-6+4p

Step-by-step explanation:

-(6-4p)

-1(6-4p)

-1*6=-6

-1*-4p=4p

-6+4p

Answer:

-(6-4p)=

-6+4p

Step-by-step explanation:

what is the slope to y=−3x+7

Answers

Answer: slope= -3

Step-by-step explanation: use the slope intercept form to find slope

The New England patriots scored 9 points in the first half. In the second half they scored 3 less than 2 times the points in the first half. What is the ratio of of the points and scored in the second half to the total number of points scored

Answers

Answer:

[tex]S : T = 5 : 8[/tex]

Step-by-step explanation:

Represent the first half with F and the second with S

We have that:

[tex]F = 9[/tex] --- From the first statement

[tex]S = 2F - 3[/tex] --- From the next statement

Required

Determine the ratio of S to the total point

First, we need to determine the value of S

Substitute 9 for F in [tex]S = 2F - 3[/tex]

[tex]S = 2 * 9 - 3[/tex]

[tex]S = 18 - 3[/tex]

[tex]S = 15[/tex]

Next, we determine the total points

[tex]Total = F + S[/tex]

[tex]Total = 9 + 15[/tex]

[tex]Total = 24[/tex]

The ratio of S to total is: (Represent total with T)

[tex]S : T = 15 : 24[/tex]

Divide both ration by 3

[tex]S : T = 15/3 : 24/3[/tex]

[tex]S : T = 5 : 8[/tex]

Hence, the ratio is 5 to 8

I WILL MARK YOU BRAINLIEST PLEASE HELP. It needs to be correct

Answers

9514 1404 393

Answer:

a) the originb) 2

Step-by-step explanation:

Lines AA', BB', and CC' all converge at the origin. The origin is the center of dilation.

__

Each image point is twice as far from the origin as its corresponding pre-image point. The scale factor is 2.

What is the percent equation

Answers

I believe that is what it is. :)

Answer:

a fraction with 100 as the denominator and the other fractions denominator 100 and input the other two numbers.

Step-by-step explanation:

what is 20 times 45 divided by 6

Answers

Answer:

The answer is 150

Step-by-step explanation:

I hope this helped, please mark me brainliest. Thank you and have a nice day!

Explain why the exponents cannot be added in the product 12^3 x 11^3?? I need a simple answer that won’t be confusing pls.

Answers

Answer:

The bases aren't the same

Step-by-step explanation:

If the bases are the same, then their exponents are added. In this case, since the exponents are the same, then 12^3*11^3=(12*11)^3=132^3=2299968

Triangle FED is the image of triangle ABC. Angle A corresponds with which angle?
A) D
B) E
C) F
D) none of the above

Answers

Answer:

C) F

Step-by-step explanation:

If you flip triangle ABC across the y-axis and slide it over top of triangle FED then you can see that angle A corresponds with angle F.

The answer would be F

6 2/5 x 3 ÷ 2 2/4 =
4 4/5 x 5 7/5 ÷ 6 8/9=

Answers

Answer:

Answers are below

Step-by-step explanation:

Q1. 64x^3/25

​Q2.​​ 3456x/775

​​

Natalia and her friends held a bake sale to benefit a local charity, friends sold 15 cakes on the first dayand 22 cakes on the second day of the bake saleThey collected $60 on the first day $88 on the second day Write an equation to represent the amount R Natalia and her friends raised after selling c cakes .

Please i need this asap it’s due in 15 minutes!! I will give brainliest to whoever gets it right first!!

Answers

the answer should be R=c(4)

-3y+(1)/(5)=(2)/(3)x write in Ax+By=C

Answers

Answer:

2/3x + 3y = 1/5

Step-by-step explanation:

-3y + 1/5 = 2/3x (subtract 1/5)

-3y = 2/3x - 1/5 (subtract 2/3x)

-2/3x - 3y = -1/5 (divide by negative 1)

2/3x + 3y = 1/5

Hope this helps ya!!

Find The Value Of Segment JK

Answers

Answer:

Step-by-step explanation:

since the two triangles are congruent,

GH = JK

Since, GH = 10 cm

JK is also 10 cm

Hope this helps

plz mark as brainliest!!!!!!

Please help me with this

Answers

[tex]\rm\blue{Answer:}[/tex]

x = 70°

Explanation :

To find : Value of x

Here, given angles are :

35°, 75° and x

Knowledge Required to solve it :

The sum of all the angles of a triangle is 180°.

Now,

35°+75°+x=180°

⇒110°+x=180°

⇒x=180°-110°

⇒x=70°

.°. x=70°

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