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3 years ago

Consider the diagram.

Mathematics

2 answers:

Grace [21]3 years ago

7 0

Answer:

ab= 9

Step-by-step explanation:

Olegator [25]3 years ago

4 0

Answer:

AB = 9

Step-by-step explanation:

Given that line, l is a perpendicular bisector of line segment AC. It intersects line segment AC at point B.

So, we can conclude that AB = BC ............ (1)

Also given that the length of line segment BC is 9.

Now, from equation (1) we can say that, AB = 9.

Therefore, the length of segment AB is 9. (Answer)

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Sami lights up a candle every 10 minutes. Every candle burns for exactly 40 minutes. How many candles are burning exactly 55 min

xxTIMURxx [149]

Answer:

Step-by-step explanation:

Candle is lit every 10 minutes :

Number of candles lit in 55 minutes:

Starting from 0 minute ; Numbe rod candles lit on 55 minutes = 6

1st candle burns out after 40 minutes

Second burns out after 50 minutes

Third will burn out after 60 minutes

Hence Number of candles still burning :

Number of candles lit - Number of candle burnt out

6 - 2 = 4 candles

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3 years ago

Margo has $80 to spend. She wants to buy

ivolga24 [154]

Answer:

The greates amount she could buy is 4

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3 years ago

Determine which score corresponds to the higher relative position. Which is better, a score of 92 on a test with a mean of 71 an

ss7ja [257]

Answer:

The score of 92 on a test with a mean of 71 and a standard deviation of 15 is better.

Step-by-step explanation:

To find which score corresponds to the higher relative position, we find the Z-score of each score.

The z-score, which measures how many standard deviation a measure is above or below the mean, is given by the following formula:

$Z = \frac{X - \mu}{\sigma}$

In which X is the score, $\mu$ is the mean and $\sigma$ is the standard deviation.

A score of 92 on a test with a mean of 71 and a standard deviation of 15.

So $X = 92, \mu = 71, \sigma = 15$

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{92 - 71}{15}$

$Z = 1.4$

A score of 688 on a test with a mean of 493 and a standard deviation of 150.

So $X = 688, \mu = 493, \sigma = 150$

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{688 - 493}{150}$

$Z = 1.3$

Which is better?

Due to the higher z-score, the score of 92 on a test with a mean of 71 and a standard deviation of 15 is better.

6 0

4 years ago

Which of the following relation are functions

swat32

Answer:

the answer is b I took the test

7 0

3 years ago

Is y= -9/5x + 1/5 perpendicular to y= 5/9x + 2/9

Lunna [17]

The given lines are perpendicular

Step-by-step explanation:

if Two lines are perpendicular then their slopes are

m $m_{1}=-\frac{1}{m_{2}}$

Where m₁ is slope of first line and m₂ is the slope of second line.

Since the lines are in slope-point form the standard form is:

$y=mx+b$

where m is the slope

The slope of first line y= -9/5x + 1/5 is: m₁ = -9/5

The slope of second line y= 5/9x + 2/9 is: m₂= 5/9

So, m $m_{1}=-\frac{1}{m_{2}}$ i.e $-\frac{9}{5}=\frac{5}{9}$

So, The given lines are perpendicular

Keywords: Perpendicular lines, slope

Learn more about Perpendicular lines at:

#learnwithBrainly

3 0

3 years ago