Find the solution to the system: x=2y-7 and 4x+y=71

Answers

Answer 1
4*(2y-7)+y=71

8y-28+y=71

9y=71+28

y=99/9

So y=11

Again putting value of y in first equation

x=2*11-7

x=22-7

x=15

So value if x is 15 and y is 11

Related Questions

(EASY MULTIPLE CHOICE I BEG YOU)

Answers

1) its number 2. 30x^7y^4

A tree in leilas backyard has been growing for 3 1/5 years. It is 3/4 meters tall how many meters per year?

Answers

Answer:

The tree grew 15/64 meters per year.                  

Step-by-step explanation:

Given

Length of a tree = 3/4 metersTotal time taken by the tree to grow 3/4 taller = 3 1/5 or 16/5 years

To determine

Per year growth of the tree in meters

Per year growth of the tree in meters can be determined by dividing the total length of a tree i.e. 3/4 meters by the total time taken by the tree to get 3/4 taller.

Per year growth of tree = Total Length  / Total time to grow

                                       = 3/4 ÷ 16/5

                                        = 3/4 × 5/16

                                        = [3×5] / [4×16]

                                        = 15/64 meters

Therefore, the tree grew 15/64 meters per year.                  

can u help pretty pls and fast thank you

Answers

Answer: 20% Percent Discount

Step-by-step explanation:

$800.00 - $640.00=$160.00 / $800.00= .2 or 20%

anybody knows what to do ...​

Answers

Answer:

put them in goo gle they are chemicals they shoulf bting up a picture

Step-by-step explanation:

What is the slope of this line?

(sorry for the quality.) ​

Answers

Answer:

slope = - 1

Step-by-step explanation:

Calculate the slope m using the slope formula

m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]

with (x₁, y₁ ) = (- 8,6) and (x₂, y₂ ) = (0, - 2) ← 2 points on the line

m = [tex]\frac{-2-6}{0+8}[/tex] = [tex]\frac{-8}{8}[/tex] = - 1

Which is equivalent to 243 Superscript two-fifths?

3
6
9
12

Answers

Answer: Answer is 9

Step-by-step explanation:

Answer:

the answer to this question is C. 9

Step-by-step explanation:

Which one is longer?

Aslinky that is 26 inches long
Bslinky that is 2 feet long
C they are equal

Answers

Answer: A.

Step-by-step explanation:

Slinky A is 26 inches there are 24 inches in two feet so slinky B isn’t longer. Then they are obviously not equal because we figured out they have different lengths

what is the slope intercept form for y-5=3(x-3)

Answers

Answer:y=3x-4

Step-by-step explanation:

you add 5 on both sides

simplify

and get y on one side

slope is 3

the y intercept is -4

En la multiplicación anterior p y q representan
dígitos diferentes a 0. ¿Cuál es el valor de q?

Answers

Answer:

Hola

Step-by-step explanation:

Intentemos expresar en términos de b. Dado que Q = P / 2 y P = b - 2,. Combinando términos semejantes, tenemos. Dividiendo ambos lados por b, tenemos, que en este caso, cambia ab = 2. Sabemos que P es dos menos que b (P = b - 2), entonces P = 2-2 = 0.

Si desea verificar, b = 2, P = 0 y Q = 0.

se simplifica a porque cualquier cosa multiplicada por 0 es 0.
(lo siento si esto no ayuda)

3
11/
Will the solution (-3, -7) make the following system of equations a true statement?
y = 4x + 5
y = x - 4

Answers

Yes
-7=4(-3)+5
-7=-12+5
-7=-7

-7=-3-4
-7=-7

A principal of $2900 is invested at 6.25% interest, compounded annually. How much will the investment be worth after 14 years?

Answers

Answer:

$6774.4

Step-by-step explanation:

Given data

P=$2900

r= 6.25%

t= 14 years

A=???

The compound interest formula is given as

A=P(1+r)^t

substiute

A= 2900(1+0.0625)^14

A= 2900(1.0625)^14

A= 2900*2.336

A= $6774.4

Hence the final amount is $6774.4

Which point best indicates the location of V45on the number line below?
A.Point A
B.Point B
C.Point C
D. Point D

Answers

Point d because the v45 amount it’s parole to this number:(-272on)::

Solve 4+x/7=2 50 points

Answers

Answer: 4 x − 7 = 2 4x-7=2 4x−7=2. Add 7 to both sides. Simplify 2 + 7 2+7 2+7 to 9. Divide both sides by 4.

Step-by-step explanation:

Answer:

x=-14

Step-by-step explanation:

4+x/7=2

-4       -4

x/7=-2

*7    *7

x=-14

(Please help!!)

The length (l) of a tet angular box is 5 centimeters more than twice its width (w).

Write an equation to represent the length of the rectangular box.

Answers

L=5+2w would be the best answer

What is the equivalent expression for 4(2b+3c?

Answers

8b + 12c would be the answer.
You have to distribute the 4 to each of the two terms inside of the parentheses.

-7.2 as a mixed number.

Answers

Lzkdfkfjejwjekerjfif

Answer:

7 1/5                 

Explanation:

Rewrite the decimal number as a fraction with 1 in the denominator

7.2=7.2/1

Multiply to remove 1 decimal places. Here, you multiply top and bottom by 10^1 = 10

7.2/1×10/10=72/10

Find the Greatest Common Factor (GCF) of 72 and 10, if it exists, and reduce the fraction by dividing both numerator and denominator by GCF = 2,

7/2÷2/10÷2=36/5

Simplify the improper fraction,

=7 1/5

In conclusion,

−7.2=−7 1/5

Hope it helped. :)

what does x equal in this equation -5x + 8 = -2

Answers

Answer:

x = 2

Step-by-step explanation:

-5x + 8 = -2

-5x + 8 - 8 = -2 -8

-5x = -10

-5x/5 = -10/5

-x = -2

x=2

Simplify the equation:

-5x = 2 + 8

-5x = 10

x = -2

Three years ago, claire borrowed money from her father to pay for a class trip. She agreed to pay him 6% simple annual interest on the loan. Now she owes him 90$ in interest, plus the principal amount. How much did Clare borrow? The answer is 500, but how did you get that answer correctly? Step by step can u show me?

Answers

Answer:

Below

Step-by-step explanation:

6% simple annual interest on the loan for 3 years so 6x3=18

So the interest of the whole amount is 18%, so now you got to find what of 18% is 90

This looks like (initial amount)x(number)%=(final amount)

x=initial amount

number%=18

final amount=90

All percentages are just number%/100. So we have either 18/100, or .18 depending on how you want to work it.

So now we do 90÷0.18 which gives you the answer 500

(6y + 10) - (2y + 3)

Answers

Answer:

4y+7

Step-by-step explanation:

First, remove the unnecessary parenthesis. Add like terms (In this case it’s y) So it will be 6y-2y. Which gives you 4y. And then after that 10-3, which gives you 7. So your final answer is 4y+7!!

hool: Practice & Problem Solving
ΘΑττ
2.1.PS-13
Question Help
A contractor bought 8.2 ft? of sheet metal. She has used 2.3 f? so far and has $177 worth of sheet
metal remaining. The equation 8.2x - 2.3x = 177 represents how much sheet metal is remaining and
the cost of the remaining amount. How much does sheet metal cost per square foot?
Sheet metal costs $ per square foot.

Answers

ANSWER=30

because if you 8.2-2.3 you get  5.9 and if you divide by 177 it is 30

hope it helps

Plz answer im stuck on this question

Answers

Answer:

It b

Step-by-step explanation:

can u rate it brainliest

Carlos has 2 dollars more than half of the total amount of money his brother has. If x represents the amount of money Carlos's brother has, which expression can be used to represent this situation?

Answers

Answer:

[tex]y = 2 + \frac{1}{2}x[/tex]

Step-by-step explanation:

Given

Represent Carlos with y and his brother with x.

Analysing the statement one after the other:

Half of his brother's amount is: [tex]\frac{1}{2}x[/tex]

$2 more: means we add 2 to [tex]\frac{1}{2}x[/tex]

So, we have: [tex]2 + \frac{1}{2}x[/tex]

The above represent Carlos's amount.

So, the expression is:

[tex]y = 2 + \frac{1}{2}x[/tex]

Si un hombre de 1.75m de altura proyecta una sombra de 3.50m que sombra aproximada proyecta un poste de 8.25m

Answers

Answer:

4.25 m

Step-by-step explanation:

Resolvemos esta pregunta usando la fórmula:

Altura del hombre / Sombra de un hombre = Altura del palo / Sombra del palo

Sombra del hombre = 3.50 m

Altura de un hombre = 1.75 m

Sombra del palo = 8.50 m

Altura del palo = x

Por lo tanto:

1.75 / 3.5 = x / 8.5

Cruz multiplicar

1.75 × 8.5 = 3.5 × x

14.875 = 3.5x

x = 14.875 / 3.5

x = 4.25 metros

Por tanto, la altura del palo = 4.25 m

S There are 76 seats on a train. 19 seats are empty. What % of the seats on the train are empty?​

Answers

Answer: %25

Step-by-step explanation: 19/76 = 0.25

Please help me with this question it is part of a bigger problem but i just need help with this part PLZ will mark BRAINLIEST

Answers

Answer:

Step-by-step explanation:

If X is 3 then it is

3 times 3 times 3 times 3 times 3

I don't know what is x or black sorry (-.-)

Rewrite the function f(x)=4(x-2)²-8 in the form f(x)=ax²+bx+c.

Answers

Answer:

lma ooo how many times did you post

4x^2 - 16x + 8

Step-by-step explanation:

4(x-2)^2-8

4(x-2)(x-2)-8

4{x^2-4x+4}-8

4x^2 - 16x +16 - 8

4x^2 - 16x + 8

Write the slope intercept form of the equation of each line

Answers

Answer:

The slope is 1/4 so the slope intercept form is y=1/4+3

Step-by-step explanation:

To find the slope the easiest way from looking at a graph is just to find the rise over run. From looking at the graph we can see that the next point from 0,3 is 4,4. The y here is increased by 1, which means the rise is 1. The x is increased by 4 so the run is 4. From putting rise (1) over run (4) the slope is 1/4. The formula for slope intercept is y=mx+b. m is slope so we substitue that for 1/4 so now we have y=1/4x+b. Then the b is the y intercept, or, at what point the line crosses the y line. Which in this case is 0,3 so the y intercept would be 3 because that is what height it crosses the y line.

Mike rides his bike with a constant speed of 16km/h. How long will he take to travel 32 kilometers?

Answers

2 hrand 33min...,....

help me with this pls​

Answers

Answer:

I'm not sure I'm too lazy to do it lol

Step-by-step explanation:

8 Line segment AB, measuring 130 feet,
represents the slant height of the square
pyramid. Line segment AC represents
the altitude of the pyramid.
130 ft
B
240 ft
What is the length of altitude AC?
(8.1A, 8.16, 8.10, 8.1, 8.1F)
F 120 ft
G 50 ft
H 75 ft
J 60 ft
Use an unnercnon
.

Answers

The answers it going to be 60 that’s what my friend thinks

Answer:

the answer isnt 60 because i got that question wrong its 50

Step-by-step explanation:

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