What value of x makes the following equation true? (enter numbers only) 2 (x – 4) + 2x = -6x – 2

Mathematics

1 answer:

slava [35]3 years ago

7 0

Answer:

0.6

3/5

Step-by-step explanation:

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During the first year, ABC's stock starts at $100 and increases 100%. During the second year, its stock prices goes down 25% fro

frosja888 [35]

Answer:

$150

Step-by-step explanation:

$100 + 100% = $200 in the first year

$200 - 25% = $150 in the second year

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4 years ago

A cylinder and a cone have the same volume. The cylinder has radius x and height y. The cone has radius 2x. Find the height of t

n200080 [17]

$\bf \textit{volume of a cylinder}\\\\
V_c=\pi r^2h\qquad 
\begin{cases}
r=radius\\
h=height\\
------\\
r=x\\
h=y
\end{cases}\implies V_c=x^2y\pi 
\\\\\\
\textit{volume of a cone}\\\\
V_n=\cfrac{\pi r^2h}{3}\qquad r=2x\implies V_n=\cfrac{\pi \cdot (2x)^2h}{3}
\\\\\\
V_n=\cfrac{\pi \cdot 2^2x^2h}{3}\implies V_n=\cfrac{4x^2h\pi }{3}\\\\
-------------------------------\\\\$

$\bf V_c=V_n\implies x^2y\pi =\cfrac{4x^2h\pi }{3}\implies 3x^2y\pi =4x^2h\pi 
\\\\\\
\cfrac{3x^2y\pi }{4x^2\pi }=h\implies \boxed{\cfrac{3y}{4}=h}$

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3 years ago

A car travels at 4,400 feet per minute. The radius of each tire on the car is 1 foot . How many revolutions does one of these ti

jeyben [28]

700 rotations
If the radius is 1 foot, the diameter is 2 feet (twice the radius). The circumference of a circle is pi times the radius. Using 22/7 as pi, the circumference of each tire is (22/7)*2 feet. That is the same as 44/7 feet.
If the car is going 4400 feet per minute, the tires will "rotate 4400 feet from the circumference" - if you know what I mean. The tire completes one rotation every 44/7 feet. So, in 4400 feet it will complete (4400)/(44/7) feet. That is equal to 4400*7/44. Put that in a calculator and you get: 700.
**

7 0

3 years ago

4/7m = 2/7( 2m+1 )<br> What is M?<br> Check Solution

aev [14]

4/7m = 2/7(2m + 1)
4/7m = 4/7m + 2/7
4/7m - 4/7m = 2/7
0 = 2/7 (incorrect)

no solution

5 0

3 years ago

Read 2 more answers

Slope: 0 and y-intercept:0

Marat540 [252]

Answer:

y=0

Step-by-step explanation:

A slope of 0 is a horizontal line.

4 0

3 years ago