If - 2x + 3 = 7 and 3x + 1 = 5+ y, the value of y is

Answers

Answer 1

Answer:

The value for x is -2 and the value for y is -10 .

Step-by-step explanation:

Firstly , let's write the equations

              -2x+3=7      (   equation 1 )               3x+1 =5+y    (equation 2 )

 

solving equation 1 to get the values of x

          or ,    -2x+3=7          

      or,  -2x+3-3 =7-3 (subtracting -3 on both sides )

       or ,  -2x=4

        or,  -2x/2  =   4/2  (dividing  by two on both sides )

         or ,  -x =2

           or  x = -2

now let's substitute the values of x  in the equation 2

           3x+1 =5+y (writing second equation as it is )

           or, 3x+1-1=5+y-1 (subtracting  -1 on both sides )

            or , 3x = 4+y  

              or , 3 × -2 = 4+y  (substituting the values of x from equation 1 )

                or ,  -6  =  4 +y

                   or ,  -6-4 = 4+y-4 ( subtracting -4 on both sides  )

                     or ,    -10 = y

      Therefore the values of x and y is -2 and  -10 respectively .

                Hope it helped you .  If you find the answer useful  please rate brainliest , If not Thanks anyway .

 


Related Questions

Sarita deposits $1,00 in an account paying 3.4% annual interest compounded continuously. Use the formula to continuous compounded interest, A=Pe rt , where p is the principal, r is the annual interest rate, and t is the time in years.

A. What is the balance in Sarita's account after 5 years?
B.How long will it take the balance in Sarita's account to reach $2,000

Answers

Answer:

Step-by-step explanation:

a  : 1,000

b : 350

La promoción de 5to grado de secundaria "Jóvenes caminando hacia el éxito" han estado realizando actividades

para su viaje y fiesta de promoción, logrando hasta la fecha juntar la suma de S/. 24 000. Por ello, el comité de

padres de familia convocó una reunión general para decidir dónde depositar el dinero, presentando dos opciones

de ahorro:

Opción 1: Depósito por 2 años que paga el 10% trimestral en interés simple.

Opción 2: Depósito por 2 años en una cuenta que paga el 18% de semestral compuesto anual.

Ayuda a los padres de familia de la promoción a elegir la mejor opción.







ACTIVIDAD 2:
Carolina y Carla son dos hermanas gemelas quienes ganaron S/.3450 en el Bingo organizado por su parroquia,
decidiendo gastar S/. 1450 en un viaje a Cuzco y repartirse el resto en partes iguales. Cada hermana decidió
ahorra en su Banco de confianza. ¿Cu

Answers

Answer:

Los padres de la promoción deben elegir la Opción 1, porque da un mayor interés en la inversión.

Step-by-step explanation:

El monto recaudado por la escuela secundaria = S / 24,000

Las opciones que tienen los padres para depositar el dinero son;

Opción 1:

El interés simple del depósito = 10%

El número de veces que se aplica el interés anualmente = Trimestral

El número de años para el depósito = 2 años

opcion 2

La tasa de interés del depósito, r = 18% de interés simple.

El número de veces que se aplica el interés = Semestralmente

La cantidad de años que se ahorrará la cantidad = 2 años

Opción 1

Observamos que para el interés simple no hay interés ganado sobre el interés anterior.

Por lo tanto;

Una inversión que paga el 10% trimestralmente = (1/4) año pagará 4 × 10% = 40% en 4 × (1/4) año = 1 año

La cantidad de interés ganado en 2 años invirtiendo en la opción 1 se da como sigue;

Yo = P × R × T / (100)

∴ I₁ = 24.000 × 40 × 2/100 = 19.200

El interés después de 2 años en la opción 1, I₁ = S /. 19.200

opcion 2

Una inversión que paga 18% semestralmente = (1/2) año pagará 2 × 18% = 36% en 2 × (1/2) año = 1 año

La cantidad de interés ganado en 2 años invirtiendo en la opción 2 se da a continuación;

Yo = P × R × T / (100)

∴ I₂ = 24.000 × 36 × 2/100 = 17.280

El interés después de 2 años en la opción 2, I₂ = S /. 17.280

Dado que el interés dado por la opción 1, I₁ = S / .19,200 es mayor que el interés dado por la opción 2, I₂ = S /. 17.280, los padres de la promoción deben elegir la opción 1, que es depositar durante 2 años que paga un interés simple trimestral del 10%

Two boxes have the same volume. One box has a base that is 5 cm by 5 cm. The other box has a base that
is 10 cm by 10 cm.
How many times as toll is the box with the smaller base?
times as tall
Can somebody please help me out this test is due tomorrow and this is hard

Answers

answer:

4 times as tall

hope this help:))

Answer:

4 times

Step-by-step explanation:

Hope this helps!

William is planning a party. He spent $110.74 to buy 9.8 pounds of candy for favors. What was the cost per pound of the candy? (Do not include the $ sign in your answer.)

Answers

Answer: $11.30 per pound

Step-by-step explanation:

William spent $110.74 to buy 9.8 pounds of candy.

To find the cost per candy, divide the amount spent by the quantity of candy:

=Amount spent on candy / Quantity of candy

= 110.74 / 9.8

= $11.30 per pound

Construction crew is using heavy equipment to dig a hole in which the foundation of a house will be built. The whole will be in the shape of a right rectangular prism with dimensions of 4 feet in depth, 100 feet long, and 50 feet wide. The soil will be removed using a truck that can hold a maximum of 40,000 pounds. The soil weighs 90 pounds per cubic foot. What is the least number of truckloads needed to remove all of the soil ?

Answers

Answer:

5

Step-by-step explanation:

HELP
Find the slope between the two points (6,-3) (7,2)

Answers

Answer: The slope is 5

Step-by-step explanation:

Answer:

m=5

Step-by-step explanation:

hope this helps!

HELP I NEED TO GRADUATE​

Answers

Answer:

Step-by-step explanation:

17/20 x 2/3

Then 17/10 x 1/3 = 17/30

2.


Which inequality statement best represents the graph?


A. f(x) ≥ 2x2 + 4x


B. f(x) ≤ –2x2 + 4x


C. f(x) ≤ 2x2 + 4x


D. f(x) ≥ –2x2 + 4x

Answers

Answer:

The answer is A. f(x) ≥ 2x2 + 4x or C. f(x) ≤ 2x2 + 4x

Step-by-step explanation:

Vertex:  

( − 1 , − 2 )

Focus:  

( − 1 , − 15 /8 )

Axis of Symmetry:  

x

=

1

Directrix:  

y

=

17

8

x

y

3

6

2

0

1

2

0

0

1

6

Vertex:  

( − 1 , − 2 )

Focus:  

( − 1 , − 15 /8 )

Axis of Symmetry:  

x

=

1

Directrix:  

y

=

17

8

x

y

3

6

2

0

1

2

0

0

1

6

Vertex:  

( 1 , 2 )

Focus:  

( 1 , 15 /8 )

Axis of Symmetry:  

x

=

1

Directrix:  

y

=

17

8

x

y

1

6

0

0

1

2

2

0

3

6

Vertex:  

( − 1 , − 2 )

Focus:  

( − 1 , − 15 /8 )

Axis of Symmetry:  

x

=

1

Directrix:  

y

=

17

8

x

y

3

6

2

0

1

2

0

0

1

6

Vertex:  

( 1 , 2 )

Focus:  

( 1 , 15 /8 )

Axis of Symmetry:  

x

=

1

Directrix:  

y

=

17

8

x

y

1

6

0

0

1

2

2

0

3

6


What is 1519 rounded to the first digit

Answers

Answer:

1520

Step-by-step explanation:

hope it is helpful

An average of 20 pears were sold from Monday to Friday. After the sales on Saturday and Sunday, the average pears sold per day were increased to 25. How many pears were sold on Saturday and Sunday?

Answers

Answer:

5 pears

Step-by-step explanation:

Given that

The  average of 20 pears were sold from Monday to Friday

But after the sales on Saturday and Sunday, the average pears sold per day were increased to 25

We need to determine the number of pears sold on Saturday and sunday

So, it is

= 25 pears - 20 pears

= 5 pears

Emmet has already baked 2 pies, and he can bake 2 pies with each additional cup of sugar he buys. How many additional cups of sugar does Emmet need in order to bake a total of 40 pies?

Answers

Answer:

19

Step-by-step explanation:

He can make 2 pies with one cup of sugar so he can make 40 pies with 20 cups of sugar. He already used a cup of sugar so the total is 19 (20-1)

No links please! And I need this math answer quick

Answers

Answer:

2r-3(r+7)-8r=10(r-1)

2r-3r-21-8r=10r-10

-9r-10r=-10+21

-19r=11

-19/11=r

Step-by-step explanation:

I REALLY NEED HELP PLS​

Answers

Answer:

Step-by-step explanation:

100+2x+40=180(sum of interior angle of a triangle)

140+2x=180

2x=180-140

2x=40

x=40/2

x=20

Answer:

x=20

Step-by-step explanation:

the sum of the angles of a triangle is 180

so it means,

100+40+(2×)=180

140+(2×)=180

2×=180-140

2×=40

divide both sides by 2

x=20

to prove this substitute 20 inside see if the result is 180

40+100+(2×)=180

×=20

40+100+(2 (20))=180

140+40=180

140+40=180

Good luck.

HELP FAST PLEASEEEEE

Answers

Answer:

The third one

Step-by-step explanation:

Answer:

4 I think, Im not 100 percent sure.

HELP AGAIN PLEASE THANK YOU

Answers

Answer:

A. 10/11

Step-by-step explanation:

[tex]A. \: 10 \sqrt{11} [/tex] ✅

Step-by-step explanation:

[tex]( \sqrt{22} )(5 \sqrt{2} ) \\ = 5 \sqrt{22 \times 2} \\ = 5 \sqrt{2 \times 2 \times 11} \\ = 5 \sqrt{ {2}^{2} \times 11 } \\ = 5 \times 2 \sqrt{11} \\ = 10 \sqrt{11} [/tex]

[tex]\bold{ \green{ \star{ \orange{Hope\:it\:helps.}}}}⋆[/tex]


Which is the answer no links please.

Answers

Answer:

c

Step-by-step explanation:

Please help me please and thank you

Answers

Answer:

f(x)= x^2 - 2, the one in red.

Step-by-step explanation:

To move a quadratic function up/down, you change the value at the very end of the formula.

So instead of f(x)= x^2 + 1, you would do f(x)= x^2 - 2, to move it down 3. This would be the one in red.

a fish tank has a height of 30 inches, length of 20 inches, and a width of w 25 inches. how many cubic inches will the tank hold when half full​

Answers

Answer:

Here is your answer!

Step-by-step explanation:

Ali bought his mom 2 dozen (24) of roses. 1/3 of them are red and the rest are pink. How many are pink

Answers

Answer:

there are 16 pink roses

Step-by-step explanation:

Number of pink roses = fraction of pink roses x total number of roses bought

fraction of pink roses = 1 - fraction of red roses

1 - 1/3

= 3/3 - 1/3 = 2/3

Number of pink roses = 2/3 x 24 = 16

PLEASEEEEEE IM BEGGING SOMEONE PLEASEEEEEEEE

Answers

Answer:

hiii

zom I'd 213 088 8336

p 0

come for s

Answer:

113 degree

Step-by-step explanation:

missing angle is 113 degree because the relation between 113 degree and missing angle is alternate interior angle and alternate interior angles are always equal.

Is it possible to boost your math average of 6-7 percent in a week of homework and participating.

Answers

yes just do everything and study and u'll do fine :)

depending on where you go, just last night alone i brought grades up to 70%

Question 44.
What is the value of the expression 6 (A) -5 when A=3​

Answers

Answer:

13

Step-by-step explanation:

6(A)-5

Sub 3 into A

6(3)-5

Multiply 3 by 6

18 - 5

=13

Answer:

6(3)-5

18-5

=13

Step-by-step explanation:

Can someone PLEASE help me with this? I will give brainliest

Answers

Answer:

The area is about 25/2 inches^2

Step-by-step explanation:

You are given an isoceles triangle; the sides equal to each other are radiuses of the circle G.  They are both 5 inches in length.  

The angle between the two equal sides is equal to 88 degrees.

To find the height of the triangle, draw a line perpendicular to  GH and solve for the lengths of the sides.  

sin(88) = x/5

5sin88 is about 5 it is (4.99695)

Multiply the side length GH (5) and the solved height and divide by two;

The area is about 25/2 inches^2

Your friend's house is 10.8 miles north and 14.4 miles east of the bank. How far is your friend's house from the bank?

Answers

Answer:

Its 25.2

Step-by-step explanation:

14.4 + 10.8

If friend house is 10.8 miles north and 14.4 miles east of the bank then distance of person's house from bank is 18 miles.

What is pythagoras theorem?

Pythagoras theorem says that in a right angled triangle the square of hypotenuse is equal to the sum of squares of base and perpendicular of that triangle.

[tex]H^{2} =B^{2} +P^{2}[/tex] in which P is perpendicular, B is base, H is hypotenuse of triangle.

How to find hypotenuse?

When we express person's house,his friend's house and bank on the surface then it will look like a right angled triangle.

H=[tex]\sqrt{B^{2} +P^{2}}[/tex]

=[tex]\sqrt{10.8^{2} +14.4^{2} }[/tex]

=[tex]\sqrt{324}[/tex]

=18 miles

Hence the distance of person's house from bank is 18 miles.

Learn more about pythagoras theorem at https://brainly.com/question/343682

#SPJ2

Question is wrong as the right question is that calculate the distance between person's house and bank.

what is x-7=1 simplified?

Answers

Answer:

x = 8

Step-by-step explanation:

x-7=1

Add 7 to each side

x-7+7 = 1+7

x = 8

Answer:

x= 8

Step-by-step explanation:

collect like terms

x= 7+1

x= 8

What is m<1?

A. 21°
B. 23°
C. 24°

Answers

Hi there!

[tex]\large\boxed{\text{B. }23^o}[/tex]

According to a circle theorem:

m∠1 = 1/2(a - b) where a and b are angles.

Thus:

m∠1 = 1/2(94 - 48)

Simplify:

m∠1 = 1/2(46) = 23°. The answer is B.

Please give me answer please ​

Answers

Answer:

ESIUGSID

Step-by-step explanation:

ALIMONY

First and last letter swapped.

ALIMONY ==> Y_ _ _ _ _A

Then every two letters are reversed.

ALIMONY ==> Y I L _ _ _ A

ALIMONY ==> Y I L _ N O A

ALIMONY ==> Y I L M N O A

Same steps for DISGUISE

First and last letter swapped.

DISGUISE ==> E _ _ _ _ _ _ D

Then reverse every two letters.

DISGUISE ==> E S I U G S I D

28 - f =30.5 What is the value of f

Answers

Answer:

-2.5

Step-by-step explanation:

28 - f = 30.5

-f = 30.5-28

-f=2.5

f=-2.5

[tex]\huge\text{Hey there!}[/tex]

[tex]\mathsf{28 - f =30.5}[/tex]

[tex]\large\textsf{Or you can say: \textsf{-f + 28 = 30.5}}[/tex]

[tex]\rm{SUBTRACT\ 28\ to\ BOTH\ SIDES}[/tex]

[tex]\mathsf{-f + 28 - 28 = 30.5 - 28}[/tex]

[tex]\rm{CANCEL\ out: 28 - 28\ because\ that\ gives\ you\ 0}[/tex]

[tex]\rm{KEEP: 30.5 - 28\ because\ that\ helps\ solve\ for\ your\ f-value}[/tex]

[tex]\mathsf{30.5-28=\bf 2.5}[/tex]

[tex]\rm{New\ EQUATION: -f = 2.5}[/tex]

[tex]\textsf{When we have a variable by itself, it is usually understood as an invisible 1 }[/tex]

[tex]\rm{DIVIDE\ -1\ to\ BOTH\ SIDES}[/tex]

[tex]\mathsf{\dfrac{-f}{-1}=\dfrac{2.5}{-1}}[/tex]

[tex]\rm{CANCEL\ out: \dfrac{-1}{-1}\ because\ that\ gives\ you\ 1}[/tex]

[tex]\rm{KEEP: \dfrac{2.5}{-1}\ because\ it\ gives\ you\ the\ f-value\ result}[/tex]

[tex]\mathsf{f =\dfrac{2.5}{-1}}\\\\\large\text{or you can say}\downarrow\\\\\mathsf{2.5\div -1=\bf f}[/tex]

[tex]\uparrow\textsf{SIMPLIFY ABOVE AND YOU WILL HAVE YOUR RESULT OF \bf F}\uparrow[/tex]

[tex]\boxed{\boxed{\large\text{Amswer: \huge \bf f = -2.5}}}\huge\checkmark[/tex]

[tex]\large\text{Good luck on your assignment and enjoy your day!}[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

PLSSS HELP!!! THIS IS MY LAST QUESTION!

Nicolette decided to see what the class could earn from each activity in the same number of weeks. she decided to see how much they could earn in weeks.
a. Why do you think Nicolette chose 12 weeks?
b. how much could they earn from each activity in 12 weeks
d. how can this help Nicolette decide which way will earn more money.

Answers

Answer:

D seems most credible .

Hopefully this helped

hey! i’ll give brainliest please help

Answers

It’s a subject because it’s a person they are talking about

Answer:

Subject

Step-by-step explanation:

Have a good day :)

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