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3 years ago

Write the follow ratio is lowest terms, 49:21

2 answers:

5 0

Looking at 49 and 21, you immediately know that 7 can be divided out of both.

49:21
=49/7:21/7
=7:3

7:3 is the answer.

Hope this helps!

hoa [83]3 years ago

3 0

7:3

49:21 (DIVIDE 49 BY 7 WHICH GIVES YOU 7, DIVIDE 21 BY 7 WHICH GIVES YOU 3)

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Angel and Kellie each have the same amount of money in their wallet. Angel buys two juice drinks and receives $1.10 in change af

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y= 2x+1.10

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Step-by-step explanation:

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3 years ago

Shari bought 3 breath mints and received $2.76 change.Jamal bought 5 breath mints and received $1.20 change. If Shari and Jamal

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2 years ago

GETS BRAINILIST!!!!!!!The table shows the relationship of how many pounds of cherries are needed to make a certain number of pie

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Answer:

Graph 3

Step-by-step explanation:

EXAMPLE 6=60

4= 40

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3 years ago

How do you multiply and divide fractions? please explain in depth with examples.

Dmitry_Shevchenko [17]

Answer:

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3 years ago

PLEASE HELP SUPER FAST WORTH ALOT OF POINTS

lutik1710 [3]

Answer:

1) 78.87%

2) 99.7%

Step-by-step explanation:

The z-score for a normal distribution is given by:

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

1- The given data is:

σ = 4 years

μ = 50 years

For X = 45 and X =55

$z_1=\frac{45-50}{4}\\z_1=-1.25\\z_2=\frac{55-50}{4}\\z_2=1.25$

A z-score of -1.25 corresponds to the 10.57th percentile of a normal distribution, while a z-score of 1.25 is equivalent to the 89.44th percentile.

Therefore, the percentage of the alligators are between 45 and 55 years old is:

$P=89.44-10.57=78.87\%$

78.87% of alligators.

2- The given data is:

σ = 2 minutes

μ = 17 minutes

For X = 11 and X =23

$z_1=\frac{11-17}{2}\\z_1=-3\\z_2=\frac{23-17}{2}\\z_2=3$

A z-score of -3.0 corresponds to the 0.135th percentile of a normal distribution, while a z-score of 3.0 is equivalent to the 99.865th percentile.

Therefore, the percentage of people that should be seen by the doctor between 11 and 23 minutes is:

$P=99.865-.0135=99.73\%$

99.7% of people.

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3 years ago