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vredina [299]
3 years ago
14

Two last help with math please and thanks!

Mathematics
2 answers:
12345 [234]3 years ago
5 0
1st problem:
Use the Pythagorean theorem:
a^2+b^2=c^2
49+361=c^2
c^2=410
c=20.24
The answer is 20m

2nd problem:
First calculate the height using the Pythagorean theorem:
a^2+b^2=c^2
20^2+b^2=625     (i got 20 {radius} by half-ing the base edge length)
400+b^2=625
b^2=225
b=15

Next, solve for the volume:
V=a^2*h/3
V=40^2*15/3
V=1600*5
V=8000

The answer is the second choice or B.

sleet_krkn [62]3 years ago
4 0
20m

a^2+b^2=c^2
7^2=49
19^2=361
361+49=410
Root410= 20.248
~20
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nika2105 [10]

Answer:

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Step-by-step explanation:

77+2(3x-5)=8-3(2x+1)

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2 years ago
100 points!!! i will award brainliest!! Lines AB, and CD are straight lines. Find x and y
Ket [755]

<O = 16 degrees   vertical angles are equal


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106 +4x = 180

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2 years ago
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Agata [3.3K]

Answer:

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Step-by-step explanation:

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3 years ago
2. Here is a picture of an older version of the flag of Great Britain. There is a rigid
Nitella [24]

Answer:

no.

Step-by-step explanation:

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sorry if I'm wrong.

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AURORKA [14]

Answer:

2x+50 and 5x-55 both are congruent or have same measure.

Step-by-step explanation:

Since we want to prove that both lines are parallel, this means no theorems that involve with parallel lines apply here.

First of, we know that AC is a straight line and has a measure as 180° via straight angle.

x+25 and 2x+50 are supplementary which means they both add up to 180°.

Sum of two measures form a straight line which has 180°.

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x+25+2x+50=180

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3x+75=180

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3x+75-75=180-75

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Divide both sides by 3.

x=35°

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Since 2x+50 and 5x-55 have same measure or are congruent, this proves that both lines are parallel.

5 0
2 years ago
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