Alejandro bought $3.50 worth of pencils and erasers at the school store. Pencils cost $0.50 apiece, and erasers cost
$0.75 apiece. Which equation written in standard form represents the number of pencils, p, and the number of erasers,
e, that Alejandro bought?
O 0.75e = 3.50 -0.50p
O 0.50p + 0.75e = 3.50
O 3e = 14 -2p
O 2p + 3e = 14

Answer:

x = 13 is the answer for your question

13 + 2 = 15

Answer:

60 feet a day

Step-by-step explanation:

Answer:

2940

Step-by-step explanation:

convert the week to days. 1 week is 7 days so 420 * 7 = 2940

Answer:

True

Step-by-step explanation:

I will assume you want to see if (0, -4) is a point on the line.

y = -x³ + 2x² - 4

~Substitute

-4 = -(0)³ + 2(0)² - 4

~Simplify

-4 = -4

Best of Luck!

Answer: $1.84

Step-by-step explanation: 46 / 25 = 1.84

Answer:

$1.84

Step-by-step explanation:

25 divide by $46.00 = $1.84

Answer:

La probabilidad es [tex]0.2508[/tex]

Step-by-step explanation:

Sabemos que según datos de una empresa aseguradora de vehículos, dos de cada cinco accidentes son provocados por conductores en estado de ebriedad. Entonces, si definimos el evento

[tex]A[/tex] : ''Accidente provocado por un conductor en estado de ebriedad''

La probabilidad de este evento es

[tex]P(A)=\frac{2}{5}[/tex]     (dato del problema)

Por lo tanto, en cada accidente que ocurre, la probabilidad de que ocurra el evento [tex]A[/tex] es  [tex]\frac{2}{5}[/tex] .

Ahora bien, si suponemos cada uno de estos accidentes independientes y con probabilidad de ocurrencia ''p'' constante a lo largo del tiempo, estamos ante la presencia de un proceso Bernoulli.

Dado un proceso de Bernoulli, definimos la variable aleatoria discreta ''[tex]X[/tex]'' como el número de éxitos del proceso Bernoulli para un número fijo de ensayos.

En este caso vamos a definir

[tex]X[/tex] : ''Número de accidentes provocados por conductores en estado de ebriedad de un total de n accidentes''

Se dice que [tex]X[/tex] tiene distribución binomial de parámetros ''n'' y ''p''.

Lo denotamos [tex]X[/tex] ~ Bi (n,p)

En nuestro ejercicio el valor de ''n'' es 9 (son los ensayos que fijamos) y el valor de ''p'' es [tex]\frac{2}{5}[/tex] (definimos como ''éxito'' que el accidente sea provocado por un conductor en estado de ebriedad).

Ahora bien para calcular probabilidad vamos a utilizar la siguiente fórmula :

[tex]P(X=x)=(nCx)p^{x}(1-p)^{(n-x)}[/tex]    (I)

'' [tex]P(X=x)[/tex] '' es la probabilidad de que la variable aleatoria [tex]X[/tex] asuma el valor x. En particular, buscamos [tex]P(X=3)[/tex] que es la probabilidad de que de nueve accidentes (fijados), tres sean provocados por conductores en estado de ebriedad.

'' [tex](nCx)[/tex] '' es el número combinatorio definido como

[tex]nCx=\frac{n!}{x!(n-x)!}[/tex]

Reemplazando los datos en la ecuación (I) :

[tex]P(X=3)=(9C3)(\frac{2}{5})^{3}(\frac{3}{5})^{6}=0.2508[/tex]

La probabilidad pedida es [tex]0.2508[/tex]

Answer:

QS = 76

Step-by-step explanation:

Given R is the midpoint of QS, it means the distance from R to each endpoint is equal, that is:

QR = RS

We are given

QR = 2x + 16

RS = 5x - 17

Equating:

2x + 16 = 5x - 17

Subtracting 5x:

2x - 5x + 16 = -17

Simplifying:

-3x +16 = -17

Subtracting 16:

-3x = - 16 -17 = -33

Dividing by -3:

x = 11

Let's find

QR = 2x + 16 = 22 + 16 = 38

The length of QS is double this value: QS = 2*38 = 76

QS = 76

Answer:

attached below is the detailed solution

i) equilibrium solution : y = 0 , y^2 = 1 , y = -1 , +1

ii) attached below

iii) attached below

iv) attached below

v) attached below

Step-by-step explanation:

v) For the sketch of curve attached

red curve ( y(0) ) = -3/2

blue curve ( y(0) ) = 1/2

green solution curve ( y(0) ) = 3/2

Answer: y = 129, x = 51

Step-by-step explanation:

angles 129 and y are corresponding, so they are equal to each other

y and x are supplementary

so, y + x = 180

x = 180 - y = 180 - 129 = 51

Answer:

I belive y has to be at least 133 because it's just a little bit longer than the 229 one.

And x is most likely to be 125 because if you line up 129 with x, x is should be a little smaller so x should be 125

Answer:

C. y = 4

Step-by-step explanation:

Answer:

Option one is the correct answer y=-2

Answer:

Hay 14 monedas de 5 centavos y 3 monedas de 10 centavos.

Step-by-step explanation:

Llamemos "c" a las monedas de 5 centavos y "d" a las monedas de 10 centavos.

Hay once  monedas más de 5¢ que las de 10¢. La expresión matemática para ello es:

c = d + 11    [1]

El total es 1 dolar. La expresión matemática para ello es:

0,05c + 0,10d = 1   [2]

Si reemplazamos [1] en [2],

0,05(d + 11) + 0,10d = 1

0,05d + 0,55 + 0,10d = 1

0,15d = 0,45

d = 3

Si reemplazamos d = 3 en 1,

c = d + 11 = 3 + 11 = 14

Answer:

54 I think, but I'm not sure sorry

Step-by-step explanation:

4 ÷ 2 = 2

36 min ÷ 2 = 18 min

2 x 3 = 6 (6 ppl)

18 min x 3 = 54 min

Answer:

[tex]-1/2 * (x - 12)[/tex]

Step-by-step explanation:

Divide each term of the expression by -1/2. -1/2x divided by -1/2 = x. 6 / -1/2 = -12.

Answer:

.0076

Step-by-step explanation:

Answer:

6.675

Step-by-step explanation:

75x.089

Answer:

one:6.675 is the answer

Step-by-step explanation:

:two someone want to know r u hurting urself we all worryed about you plz if u r dont u have much to live for.

Answer:

852

Step-by-step explanation:

Answer:

852

Step-by-step explanation:

7.668 divided by 0.009 start off by making your division equation the way you want to write it and then go one by one on the numbers and start dividing it then you will get the answer: 852

Answer:

They often use up other resources native organsinsms need.

Step-by-step explanation:

By doing so they can end up killing native organsinsms.

Answer:

a) -29

b) 16

c) -6

d) 23

e) 12/a

f) x = -5

g) x = -2

h) x = 4

Step-by-step explanation:

I skipped the optional ones

Ahoj! Vzorec je Vynásobte dĺžku šírkou a budete mať štvorcové stopy. Tu je základný vzorec, ktorým sa môžete riadiť: Dĺžka (v stopách) x šírka (v stopách) = plocha v štvorcových stopách. Dúfam, že vám to pomôže! Veľa šťastia a prajem skvelý deň / noc. ❤️✨

Answer:

the dot product is 13

Step-by-step explanation:

The computation of the dot product is shown below:

Given that

x =  (1, −2, 0, 4)

y = (1, 2, 3, 4)

Based on the above information

The dot product is

= (1) (1) + (-2) (2) + (0) (3) + (4) (4)

= 1 - 4 + 0 + 16

= 13

Hence, the dot product is 13

We simply multiplied each of them so that the correct value could come

Answer:v

vvre

Step-by-step explanation:

Answer:

K should be 5

Step-by-step explanation:

1/2 is .5 which leaves k/2 you need 2.5 to make three and 2.5*2 is 5 5/2 is 2.5 plus 5 is 3 therfore k is 5

Answer:

Step-by-step explanation:

Answer:

Listen the number is an EVEN one-digit, so that means all odd numbers that are one-digit numbers are out so that means number A is wrong so its between B, C, and D. If you read the answer throughully through B, C, and D you will find one of the 2 x 6.7 is wrong. To find the correct answer to 2 x 6 and if the sum of 2 x 6 is equal to your 2 x 6 you have the correct answer! Btw I forgot the exact answer but I know it was either B or C.      

Step-by-step explanation:

Answer:

here hope this helps

Step-by-step explanation:

Answer:

23

Step-by-step explanation:

Step 1:

7x + 4y         Equation

Step 2:

7 ( 5 ) + 4 ( - 3 )       Input x and y

Step 3:

35 - 12       Multiply

Answer:

23

Hope This Helps :)

Answer:

C

Step-by-step explanation:

Answer:

The wind speed increased by 5 mph between 6:10 p.m. and 6.20 p.m.

Step-by-step explanation:

I hope this helped!

Answer:

x = 139

Step-by-step explanation:

Isosceles triangle.

Let the equal angles = y

y + y + 98 = 180   {Sum of all the angles of triangles}

  2y + 98 = 180

          2y = 180 - 98

          2y = 82

           y = 82/2

          y = 41

x = 41 + 98     { exterior angles equals the sum of interior opposite angles}

x = 139