All categories

3 years ago

if the price of each shirt is 120% of the wholesale price, write an equation and find the wholesale price for a $21 shirt.

1 answer:

5 0

Suppose the retail price of the shirt is $x, the whole sale price of the shirt equation will be:
f(x)=100/120×x
f(x)=5/6x

the whole sale price for a shirt that goes for $21 will be:
f(21)=5/6*21=$17.5

You might be interested in

Eliminate all exponents by Expanding 6^3 y^4

horrorfan [7]

Answer:

216*y*y*y*y

Step-by-step explanation:

6 cubed is 216, and y^4 expanded is yyyy. So if I'm understanding correctly, you want as your answer:

216*y*y*y*y

8 0

2 years ago

F(x) = x^2 + 8x + 15; Find f(-14/5)

mamaluj [8]

Answer:

either 449/25 or 11/25 depends on the -14/5 or

Step-by-step explanation:

$- \frac{14}{25} or \: \frac{ - 14}{25}$

if it the first one then the answer should be 449/25 but if ut the second one it should be 11/25 .

u just substitute the -14/5 to x then solve

7 0

1 year ago

Daniel worked for 2 1/3 hours and earned $18.20.

andriy [413]

He gets 7.80 an hour so you multiply 7.8 by 5.25 hours

6 0

3 years ago

Read 2 more answers

En un examen de admisión de 120 preguntas, cada respuesta correcta vale 2 puntos y por cada incorrecta se quita medio punto. Un

padilas [110]

Answer:

Respondió mal 64 preguntas.

Step-by-step explanation:

De acuerdo a la información proporcionada puedes plantear las siguientes ecuaciones:

x+y=120 (1)

2x-0,5y=80 (2)

x es el número de preguntas correctas

y es el numero de preguntas incorrectas

Primero debes despejar "x" en (1):

x=120-y (3)

Después, debes reemplazar (3) en (2):

2(120-y)-0,5y=80

240-2y-0,5y=80

240-80=2,5y

160=2,5y

y=160/2,5

y=64

Ahora puedes reemplazar el valor de "y" en (3) para encontrar el valor de "x":

x=120-y

x=120-64

x=56

De acuerdo a esto, la respuesta es que el postulante respondió mal 64 preguntas.

6 0

2 years ago

Question 4 (1 point)

Nostrana [21]

Answer:

The ball will hit the ground at 10 seconds and its maximum height is 1024 feet.

Step-by-step explanation:

Height of a mountain, h = 90 feet

Upward velocity of a ball, u = 64 ft/s

Its height as a function of time can be written by using the second equation of motion as follows :

$f(x) = -16t^2 + 64t + 960$ .....(1)

When it will hit the ground, f(x) = 0

$-16t^2 + 64t + 960=0\\\\16(-t^2+4t+60)=0\\\\-t^2+4t+60=0$

It is quadratic equation.

t = -6 s and t = 10 s

Neglecting -6 seconds, the ball will hit the ground at 10 seconds.

For maximum height,

Put f'(x) = 0

$-32t+64=0\\\\\\t=\dfrac{64}{32}\\\\t=2\ s$

Put t = 2 in equation (1)

$f(2) = -16(2)^2 + 64(2) + 960\\\\=1024\ \text{feet}$

Hence, the ball will hit the ground at 10 seconds and its maximum height is 1024 feet.

5 0

2 years ago