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Radda [10]
1 year ago
9

Two column proofs Beginner's

Mathematics
1 answer:
Darina [25.2K]1 year ago
3 0

LETS prove the 2nd part of the Question

Here concept of right angles is used

We can see BA is perp to BD

and BC is perp to BE

We have to prove angle 1 = angle 3

i will denote angle by a

therefore we need to prove a1 = a3

as BA is perp to BD hence angle between them will be 90 degree

a1 + a2 = 90 degree

Similarly BC is perp to BE

a2 + a3 = 90 degree

as both equations add up gives 90 degree so will equate them

a1 + a2 = a2 + a3

which means a1 = a3

Hence Proved

To learn more about Right Angles:

brainly.com/question/7116550

#SPJ1

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The ratio of salamanders to frogs is 6 to 7. If there are 9 salamanders, how many frogs are there?
ipn [44]

Answer

10

Step-by-step explanation:

salamander:frog

6:7

start by setting up the ratios as fractions and using <em>x</em> as the variable.

\frac{6}{7}=\frac{9}{x}

next cross multiply.

6x=63

x=10 i believe

8 0
3 years ago
Sydney drives 10 mi at a certain rate and then drives 20 mi at a rate 5 mi/h faster than the initial rate. Write expressions for
Rama09 [41]
35 miles
i hope i helped 
8 0
3 years ago
Read 2 more answers
The speed of light is about 6.71x10 squared (8) miles per hour. write that number in standared form?
Genrish500 [490]

the answer is 671,000,000

6.71 x 10^8 converted to standard form is equal to 671,000,000.

Hope it helps:)

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5 0
3 years ago
Please help!
nordsb [41]

Answer:

1) 1.4%

2) 8.3%

3) 20.8%

Step-by-step explanation:

Alrighty! You are looking at some compound probability problems.

The trick with these is to figure out the probability of each piece of an event, and then multiply those together to get the overall probability.

Quick note about notation: p(event A) is short hand for saying "The probability of event A is....."

1) Flipping head, rolling a 5, and rolling a 2

P(flipping heads) = 1/2

p(rolling a 5) = 1/6

p(rolling a 2) = 1/6

so: (1/2) x (1/6) x (1/6) = 1/72 or about 1.4%

2) Flipping tails, rolling an odd number, and rolling a 4

p(flipping tails) = 1/2

p(rolling an odd number) = 3/6

p(rolling a 4) = 1/6

so: (1/2) x (3/6) x (1/6) = 3/72 or about 8.3%

3) Flipping head, not rolling a 2, and rolling an even number

p(flipping heads) = 1/2

p(not rolling a 2) = 5/6

p(rolling and even number) = 3/6

so: (1/2) x (5/6) x (3/6) = 15/72 or about 20.8%

5 0
3 years ago
Select all the correct answers.
abruzzese [7]
B, C, and E aren't linear functions because they contain exponents
4 0
3 years ago
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