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sleet_krkn [62]
3 years ago
8

Please help due in an hour!!!​

Mathematics
2 answers:
lions [1.4K]3 years ago
3 0

Answer:

The answer is C

Step-by-step explanation:

sweet-ann [11.9K]3 years ago
3 0
Which grade? --------_______-------
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You roll a number cube twice. Find the probability of the events. Rolling an odd number 2 or a 4.
Digiron [165]

Answer:

5/12

Step-by-step explanation:

If you roll it twice there are 12 options. The odd numbers are 1, 3, and 5. Add 2 and 4, and that's a 5/12 chance.

5 0
3 years ago
The sum of three numbers is 74. The first number is three less than half the second number. if the third number is four times th
krek1111 [17]

Answer:

x=59/6

Step-by-step explanation:

Let's just say x+y+z=74

x=y-3

z=4y

So if we wanna convert everything into one variable, we get (y-3)+y+4y=74

Simplify and you get 6y=77

Now solve for y, and - 3 to get x

7 0
3 years ago
Helllppppppppp meeeeeeeepllllzzzz!!!!!!!!!!!!!!!!!!
solniwko [45]

Answer:

-3/5 or -0.6

Step-by-step explanation:


3 0
3 years ago
Una escalera de 131313 metros está recargada contra una pared cuando su base empieza a resbalar. Cuando la base está a 121212 me
Artyom0805 [142]

Answer:

El ángulo entre el piso y la escalera está cambiando a una razón de -1 radian por segundo.

Step-by-step explanation:

Sea x la distancia horizontal entre la pared y la base de la escalera y l la longitud de la escalera, medidas en metros. Además, tenemos que \theta es el ángulo entre la escalera y el piso, medido en radianes.

Si la pared y el piso son ortogonales entre sí, entonces podemos utilizar la siguiente relación trigonométrica que relaciona las variables anteriores:

\cos \theta = \frac{x}{l}  (1)

Por diferenciación implícita y la definición de razón de cambio tenemos que:

-\sin \theta \,\dot \theta = \frac{\dot x}{l} (2)

Donde:

\dot x - Razón de cambio de la distancia horizontal entre la pared y la base de la escalera, medida en metros por segundo.

\dot \theta - Razón de cambio del ángulo entre el piso y la escalera, medida en radianes por segundo.

Pero tenemos que el seno del ángulo está definido por:

\sin \theta = \frac{\sqrt{l^{2}-x^{2}}}{l} (3)

Si aplicamos (3) en (2), expandimos la ecuación como sigue:

-\frac{\sqrt{l^{2}-x^{2}}}{l}\,\dot \theta = \frac{\dot x}{l}

\dot \theta = - \frac{\dot x}{\sqrt{l^{2}-x^{2}}} (4)

Si tenemos que \dot x = 5\,\frac{m}{s}, l = 13\,m y x = 12\,m, entonces la razón de cambio del ángulo es:

\dot \theta = -\frac{\left(5\,\frac{m}{s} \right)}{\sqrt{(13\,m)^{2}-(12\,m)^{2}}}

\dot \theta \approx -1\,\frac{rad}{s}

El ángulo entre el piso y la escalera está cambiando a una razón de -1 radian por segundo.

7 0
3 years ago
What is $210 reduced by 40%
bearhunter [10]
Your answer would be 84
5 0
3 years ago
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