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jeka94
2 years ago
10

Apply the associative property of multiplication to rewrite the expression and simplify -4(9b)

Mathematics
1 answer:
hodyreva [135]2 years ago
3 0

Answer:(-4x9)b = -36b

Step-by-step explanation:

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Solve for y in terms of m by cross-multiplying.<br><br><img src="https://tex.z-dn.net/?f=%5Cfrac%7By%7D%7Bm%7D%20%3D%5Cfrac%7B1%
taurus [48]

Answer:

y = m/3

Step-by-step explanation:

y          1

---- = --------

m          3

Cross multiply

3*y = 1*m

3y = m

Divide each side by 3

3y/3 = m/3

y = m/3

6 0
3 years ago
There are 20 triangles and 8 circles. What is the simplest ratio of circles to total shapes?
Rudik [331]

Answer:

5 to 2

Step-by-step explanation:

You can simplify both 20 and 8 by 4.

20/4 = 5

8/4 = 2

3 0
3 years ago
Use the definition of the derivative to differentiate v=4/2 pie r^3
nata0808 [166]

I suspect 4/2 should actually be 4/3, since 4/2 = 2, while 4/3 would make V the volume of a sphere with radius r. But I'll stick with what's given:

\displaystyle \frac{dV}{dr} = \lim_{h\to0} \frac{2\pi(r+h)^3-2\pi r^3}{h}

\displaystyle \frac{dV}{dr} = 2\pi \lim_{h\to0} \frac{(r^3+3r^2h+3rh^2+h^3)- r^3}{h}

\displaystyle \frac{dV}{dr} = 2\pi \lim_{h\to0} \frac{3r^2h+3rh^2+h^3}{h}

\displaystyle \frac{dV}{dr} = 2\pi \lim_{h\to0} (3r^2+3rh+h^2)

\displaystyle \frac{dV}{dr} = 2\pi \cdot 3r^2 = \boxed{6\pi r^2}

In Mathematica, you can check this result via

D[4/2*Pi*r^3, r]

3 0
2 years ago
Which expression shows the results of applying the distributive property to 3 (1/5x- 1/7)
marshall27 [118]

The first option: (3/5)x - 3/6

3 0
2 years ago
Read 2 more answers
Can someone please help me?
ElenaW [278]

Answer:

Choice A is correct; Kindly rate

Step-by-step explanation:

A function is said to be increasing over a given interval if the value of the function is increasing over the said interval. From the graph, the function is increasing over the interval since with every change in the x-value, the y-value is increasing

8 0
3 years ago
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