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3 years ago

What is the answer to r+3=2?

Mathematics

2 answers:

attashe74 [19]3 years ago

7 0

Answer:

r + 3 = 2

First, subtract 3 from both sides. / Your problem should look like: r = 2 - 3

Second, simplify 2 - 3 to -1. / Your problem should look like: r = -1

motikmotik3 years ago

3 0

R + 3 = 2

First, subtract 3 from both sides. / Your problem should look like: r = 2 - 3
Second, simplify 2 - 3 to -1. / Your problem should look like: r = -1

Answer: r = -1

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Step-by-step explanation:

3 red / 10 total

4 white / 9 total

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3 years ago

What’s the answer to this problem???

Snowcat [4.5K]

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3 years ago

Determine the range of the following graph

Ierofanga [76]

Given:

The graph of a function is given.

To find:

The range of the graph.

Solution:

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7 0

3 years ago

the population of a small city grows by 600 every year. If there were 900 people initially, find the population of the city 60 y

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Step-by-step explanation:

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3 years ago

A physical therapist wants to determine the difference in the proportion of men and women who participate in regular sustained p

Oliga [24]

Answer:

no of sample within two percentage points is 5409

no of sample not use prior estimates is 8321

Step-by-step explanation:

Given data

E = 2% = 0.02

male m = 21.2 % = 0.212

female f = 19.7 % = 0.197

to find out

no of sample within two percentage points and if does not use any prior estimates

solution

first we calculate no of sample within two percentage points

we know Z critical value for 99% is 2.58

so no of sample will be

n = (Z / E )² × m(1-m) + f ( 1-f )

put all the value we get no of sample

n = (2.58 / 0.02 )² × 0.212 ( 1 - 0.212 ) + 0.197 ( 1 - 0.197 )

n = 16641 ×0.3250

no of sample within two percentage points is 5409

in 2nd part no of sample not use prior estimates

here than f and m will be 0.5

than

n = (Z / E )² × m(1-m) + f ( 1-f )

put all value

n = (2.58 / 0.02 )² × 0.5 ( 1 - 0.5 ) + 0.5 ( 1 - 0.5 )

n = 16641 × 0.5

no of sample not use prior estimates is 8321

7 0

3 years ago