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3 years ago

9

Vanessa tried to prove that triangle KLM is congruent to triangle MNK. What is the first error Vanessa made in her proof?

1 answer:

Natali [406]3 years ago

5 0

Answer:

Step-by-step explanation:

Vanessa only established some of the necessary conditions

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F the experimental value for the percentage of o is 37%, the accepted value of the percentage of oxygen is 40%, what is the perc

fenix001 [56]

The percentage error can be calculated using the following rule:
% error = difference between values / accepted value

From the givens:
The accepted value = 40%
Difference between values = 40% - 37% = 3%

Substitute in the equation to get the percentage error as follows:
% error = (3/40) * 100 = 7.5%

3 0

3 years ago

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, Hayley sold 20 tickets to the school play for a total of $225 early bird tickets were $10 and regular price tickets were $15 w

Lady_Fox [76]

Answer:

15 early tickets were sold and 5 regular tickets were sold.

Step-by-step explanation:

Let x be the number of early bird tickets sold and y be the number of regular tickets sold.

Total number of tickets sold = 20

Thus, we can write the equation,

$x + y = 20$

Cost of early bird ticket = $10

Cost of regular tickets = $15

Total cost = $225

Thus, we can write the equation,

$225 = 10x + 15y$

We solve the equation by elimination method by multiplying first equation by 10 and subtracting.

$10x + 15y-(10x+10y) = 225 - 200\\5y = 25\\\Rightarrow y=5\\x + 5 = 20\\\Rightarrow x = 15$

Thus, 15 early tickets were sold and 5 regular tickets were sold.

5 0

3 years ago

Write an explicit formula for a_na

Masja [62]

Explicit formula for the sequence 29,20,11....... is $a_n=38-9n$

Given :

term of the sequence 29, 20, 11, ...

We need to find out the formula for the nth term of the given sequence

Lets find out whether the given sequence is arithmetic or geometric

In the given sequence , common difference is 9

$20-29=-9\\11-20=-9$

we can say difference =-9

General explicit formula

$a_n=a_1+(n-1)d$

where a1 is the first term

common difference d=-9

substitute the values

$a_n=a_1+(n-1)d\\a_n=29+(n-1)(-9)\\a_n=29-9n+9\\a_n=38-9n$

Explicit formula for the sequence 29,20,11....... is $a_n=38-9n$

Learn more : brainly.com/question/23243640

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3 years ago

Kate can mow at a constant rate of 4/5 lawns per hour. what is the ratio of lawns per hours?

Softa [21]

Answer:

4 : 5

Step-by-step explanation:

Kate can mow at a constant rate of 4/5 lawns per hour.

So, we can represent this in the following manner:

Kate can mow 4 lawns in an interval of 5 hours at a constant rate.

We are asked to determine the ratio of lawns per hour.

Therefore, the ratio of lawns per hour is 4 : 5. ( Answer )

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3 years ago

Find the quotient 42j^4 k^2÷(-3j^3 k)

viva [34]

Your answer is =<span>-14jk</span>

4 0

4 years ago

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