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Fed [463]
3 years ago
7

Solve for x: 4x^2 + 2(2x + 2)^2 = 100

Mathematics
2 answers:
balu736 [363]3 years ago
8 0
Would it be 4(1)^2+2(2(1)+2)^2=100
anastassius [24]3 years ago
4 0
Let's solve your equation step-by-step.<span><span><span>4<span>x2</span></span>+<span>2<span><span>(<span><span>2x</span>+2</span>)</span>2</span></span></span>=100</span>Step 1: Simplify both sides of the equation.<span><span><span><span>12<span>x2</span></span>+<span>16x</span></span>+8</span>=100</span>Step 2: Subtract 100 from both sides.<span><span><span><span><span>12<span>x2</span></span>+<span>16x</span></span>+8</span>−100</span>=<span>100−100</span></span><span><span><span><span>12<span>x2</span></span>+<span>16x</span></span>−92</span>=0</span>Step 3: Use quadratic formula with a=12, b=16, c=-92.<span>x=<span><span><span>−b</span>±<span>√<span><span>b2</span>−<span><span>4a</span>c</span></span></span></span><span>2a</span></span></span><span>x=<span><span><span>−<span>(16)</span></span>±<span>√<span><span><span>(16)</span>2</span>−<span><span>4<span>(12)</span></span><span>(<span>−92</span>)</span></span></span></span></span><span>2<span>(12)</span></span></span></span><span>x=<span><span><span>−16</span>±<span>√4672</span></span>24</span></span><span><span>x=<span><span><span>−2</span>3</span>+<span><span><span><span>13</span><span>√73</span></span><span> or </span></span>x</span></span></span>=<span><span><span>−2</span>3</span>+<span><span><span>−1</span>3</span><span>√73</span></span></span></span>Answer:<span><span>x=<span><span><span>−2</span>3</span>+<span><span><span><span>13</span><span>√73</span></span><span> or </span></span>x</span></span></span>=<span><span><span>−2</span>3</span>+<span><span><span>−1</span>3</span><span>√<span>73</span></span></span></span></span>
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Hi!! I need help with this task Can someone help me please..
dsp73
The answer you’re looking for is B
5 0
3 years ago
the volume of a cylinder is 24 π cubic feet.what is the volume of a cone having the same base and same height?
dalvyx [7]

\bf \stackrel{\textit{volume of a cylinder}}{V=\pi r^2 h}~\hspace{7em}\stackrel{\textit{volume of a cone}}{V=\cfrac{\pi r^2 h}{3}} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{volume of a cylinder}}{V=24\pi }~\hspace{7em}\stackrel{\textit{volume of a cone}}{V=\cfrac{24\pi }{3}}\implies V=8\pi


notice the volumes, the cone's volume is really one-third that of the cylinder, assuming "h"eight and "r"adius is the same on both.

7 0
4 years ago
There are 8 animals in the barn. Some are ducks and some are buffalo. There are 24 legs in all. How many of each animal are ther
faltersainse [42]

Answer: 4 buffalos and 20 chickens (i think)

Step-by-step explanation:

2x+4y= 8

Ducks have 2 legs and buffalos have 4.

x= ducks y=buffalos

2(24-y)+4y=24

48-2y+4y=40

2y=8

y=4

4 buffalos

x+y=24

x=24-y

x=24-4

x=20

20 ducks

3 0
3 years ago
Help, &gt; &lt; or =?<br><br><br> |-6| ? 4
Damm [24]

Answer:

>

Step-by-step explanation:

Because |-6| = 6

and 6 is greater than 4

8 0
3 years ago
Please help Im confused
d1i1m1o1n [39]
Answer is 40

15/3 = 5
8 x 5 = 40
3 0
3 years ago
Read 2 more answers
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