25d-14d+8d=95
whats the value of d and show work
Answers
Simplify both sides of the equation
25d-14d+8d = 95
Simplify
19d = 95
Divide both sides by 19
19d/19 = 95/19
d = 5
I hope that's help !
as all of the terms on the left are 'd's then we consider them to be called like terms. When we have like terms we can add or subtract freely.
so:
25d-14d= 11d
11d+8d = 19d
therefore we get:
19d = 95
this is the same as
19*d=95
to find do we need to 'work backwards' to move the 19 to be with 95.
So to 'work backwards' we do the opposite of multiply and divide it instead to both sides of the equation.
19/19*d=95/19
d=95/19
d= 5
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Answers
I will compare it with these three systems:
1) -28x + 12 = -16 and 28x - 56y = 14
You can check that if you mulitply the equation a) times - 4 and the equation b) times -14, you get the equations of this new system. Then the two systems are equal.
2) 28x - 12y = 16 and -6x + 12y = - 3
You can check that if you multiply the equation a) times 4 and the equation b) times - 3 you get the same equations of this system, then the two systems are equals.
3) 14x - 6y = 4 and -14x + 28y = 1
You can check that these equations cannot not be obtained from a) and b) then the systems are different.
You can solve both systems and you will obtaind different values for the xs and the ys.
el dinero de los demás. Si cada uno pierde una apuesta en el orden de presentación y al final terminan con
S/.48, S/.56 y S/.28 respectivamente, ¿Quién de los
amigos ganó más dinero y cuánto?
Answers
Answer:
La persona que ganó más dinero fue Braulio por S/.16
Step-by-step explanation:
Deje que la cantidad inicial sea Andrés X, Braulio Y y Ciro Z
Luego, dado que cada uno pierde una apuesta en el orden presentado, tenemos;
Después de la primera apuesta, tenemos;
Andrés X-Y-Z, Braulio (Y + Y), Ciro (Z + Z)
En la segunda apuesta, tenemos;
2 (X-Y-Z), 2Y - (X-Y-Z) - 2Z, 2Z + 2Z
2 (X-Y-Z), 3Y - X -Z, 4Z
En el tercero
4 (X-Y-Z), 6Y - 2X - 2Z, 4Z-2 (X-Y-Z) - (3Y - X -Z)
4 (X-Y-Z), 6Y - 2X - 2Z, 7Z - X - Y
4 (X-Y-Z) = 0.48 .............................. (1)
6Y - 2X - 2Z = 0.56 ...................... (2)
7Z - X - Y = 0.28 ............................ (3)
Multiplicamos las ecuaciones (2) por 2 y restamos la ecuación (1), tenemos;
12Y - 4X - 4Z - 4X + 4Y + 4Z = 0.56 * 2 - 0.48 = 0.64
16Y - 8X = 0.64 ...................... (4)
Multiplicamos las ecuaciones (2) por 7/2 y sumamos a la ecuación (3), tenemos;
21Y - 7X - 7Z + 7Z - X - Y = 7/2 * 0.56 + 0.28
20Y - 8X = 2.24 ...................... (5)
Restando la ecuación (4) de la ecuación (5) tenemos;
20Y - 8X - 16Y - 8X = 2.24 - 0.64 =
4Y = 1.6
Y = 1.6 / 4 = 0.4
De la ecuación (5), tenemos;
20Y - 8X = 20 * 0.4 - 8X = 2.24
8X = 8 - 2.24 = 5.76
X = 5,76 / 8 = 0,72
De la ecuación (3), tenemos;
7Z - X - Y = 7Z - 0.72 - 0.4 = 0.28
7Z = 1.4
Z = 1.4 / 7 = 0.2
Por lo tanto tienen inicialmente
X₁ = 0.72
Y₁ = 0.4
Z₁ = 0.2
Después de jugar tienen;
X₂ = 0.48
Y₂ = 0.56
Z₂ = 0.28
Los cambios son
Andrés 0.48 - 0.72 = -0.24
Braulio; 0.56 - 0.4 = 0.16
Ciro 0.28 - 0.2 = 0.08
La persona que ganó más dinero fue Braulio por S/.16
Answers
2) x=55% that it
let 'what number' be x
55% of what number = (55/100) * X which is 231 or
(55/100) * X = 231
x = 231 *(100/55)
b. x^3
c.x^3+x^2+x+1
d. x^3-2
Answers
Answer:
Option C.
Step-by-step explanation:
We have to solve by synthetic division and tell the quotient.
First we will write the numerator in the standard form as
Which will become as
Since denominator of the fraction is (x -1) therefore we take x = 1 as zero root.
Now we form the synthetic form as below
1 0 0 0 -1
1 1 1 1 1 0
x³ x² x
Here coefficient of x³ is 1, for x² is 1, for x is 1, and constant term 1.
Now the fraction will come in the form of
Therefore quotient will be
Option C. is the answer
x^4-1=(x²-1)(x²+1)=(x²+1)(x-1)(x+1)
==>(x^4-1)/(x-1)=(x²+1)(x+1)=x^3+x^2+x+1
Answer C
Answers
Answer:
Si Pepe debía 27 y su mamá le presto y le va a sobrar es
50-27=23
Answers
Answer:
(3)(6)
Step-by-step explanation:
1st. Find the answer(60*30%=18)
2nd. Find the option that equals 18 which was (3)(6)
Basically, for all of questions that ask for a different way to express it, multiply the total amount by the percentage(or decimal/fraction) and find the other expression with the same answer.
Answer:
(3)(6)
Step-by-step explanation:
i did the test