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brilliants [131]
2 years ago
9

62 62 65 65 115 115 118 118 I have no idea how to solve this, will give brainliest

Mathematics
1 answer:
Kobotan [32]2 years ago
8 0

Answer:

1.ABC = 45°,DBE = 45°.  ABD = 135°,CBE = 135°

2.ABC = 62°, DBE = 62°, ABD =118°,CBE = 118°

Step-by-step explanation:

1.angle ABC = angle DBE because they are vertical.  You can write the equation 3x+38 = 5x+20 and find both angles.  When you solve, x=9.  You substitute it in.  ABD is equal to 180-45° because it is supplementary with ABC. ABD = CBE b/c vertical angles.

2.You do the same thing.  4x+2=5x-13,x=15.  You substitute in 15 for x and get 62°.  They are the equal angles.  For ABD you do 180 -62 since they are supplementary angles, which gets you 118 which applies for both because they are vertical angles.

I want the brainliest.

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Determine whether the given length can be side lengths of a right triangle. 12m, 60m, 61m
Ne4ueva [31]

Answer:

No

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Using the converse of Pythagoras' identity.

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2 years ago
a spherical balloon is deflated at a rate of 256pi/3 cm^3/sec. at what rate is the radius of the balloon changing when the radiu
Hunter-Best [27]
What you need to look for is \frac { dr }{ dt } when r=8.

Now:

Volume\quad of\quad a\quad sphere:\\ \\ V=\frac { 4 }{ 3 } \pi { r }^{ 3 }

\therefore \quad \frac { dV }{ dr } =\frac { 4 }{ 3 } \pi \cdot 3{ r }^{ 2 }=4\pi { r }^{ 2 }\\ \\ \therefore \quad \frac { dr }{ dV } =\frac { 1 }{ \frac { dV }{ dr }  } =\frac { 1 }{ 4\pi { r }^{ 2 } }

And:\\ \\ \frac { dV }{ dt } =-\frac { 256\pi  }{ 3 } \\ \\ Therefore:\\ \\ \frac { dr }{ dt } =\frac { dr }{ dV } \cdot \frac { dV }{ dt }

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\\ \\ =-\frac { 64 }{ 3{ r }^{ 2 } } \\ \\ When\quad r=8,\\ \\ \frac { dr }{ dt } =-\frac { 64 }{ 3\cdot { 8 }^{ 2 } } =-\frac { 1 }{ 3 } \\ \\ Answer:\quad -\frac { 1 }{ 3 } \quad cm/sec
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3 years ago
Please help, will give brainliest! :)
Nonamiya [84]

Answer:

the answer is 2>am sorry if wrong

6 0
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