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ale4655 [162]
3 years ago
13

-3x+9y=-54 what is the y intercepts

Mathematics
2 answers:
3241004551 [841]3 years ago
5 0
One way to find the y int is to sub in 0 for x and solve for y

-3x + 9y = -54
-3(0) + 9y = -54
9y = -54
y = -54/9
y = -6....so ur y int is -6 or (0,-6)
sergey [27]3 years ago
5 0
Simple...

you have: -3x+9y=-54

If you want to find the yi-intercept of this line you must first re-write it in y=mx+b form-->>

-3x+9y=-54

-3x+9y=-54
+3x      +3x

9y=3x-54

Now divide by 9...

\frac{9y}{9} = \frac{3x-54}{9}

y=\frac{1}{3} x-6

As we can see the y-intercept is located at (0,-6).

Thus, your answer.

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A rectangular pyramid has a height of 15 cm. What is the volume of the rectangular pyramid in cubic feet?
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Answer:

The answer is 360

Step-by-step explanation:

the formula for the volume of a rectangular based pyramid is 1/3 times the base area times the height and the height is given as 15 cm the base parameters are 9 and 8 respectively so deep area of the rectangular base is 9 * 8 * 15 that is 1080 x 1/3 which is 360

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Simplify the following expression: 4-3 x 4-8.
Ivenika [448]

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3 0
2 years ago
Find the equation of the line perpendicular to y=−2 that passes through the point (4, −2).
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x = 4

because it is perpendicular, the new equation has to be a vertical since the original was horizontal. We know that it passes through (4,-2) so it has to be x=4

4 0
3 years ago
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Calcular x en: los datos q faltan
Taya2010 [7]
Answer:

x = 13

Step-by-step explanation:

No se exactamente como decir esto porque yo ayudo la majoria de los usuario en ingles pero hay que usar un método para describir a x

Un método que se llama Pythagorean theorem

Pythagorean theorem: a^2 + b^2 = c^2 donde a^2 = 5 b^2 = 12 y c^2 = x

Entonces…

5^2 + 12^2 = c^2

Nota: podemos ver que esto esta bien porque el sum de los dos lados suma el mas largo.

Ahora

25 + 144 = c^2

c^2 = 169

Pero eso no puede ser la respuesta porque no tiene sentido a que x sea un lado que mide 169 entonces tenemos que usar sqrt rt

sqrt rt de 169 = 13

x = 13
4 0
3 years ago
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