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3 years ago

If two halves two whole 1/2 are added to two whole 1/2 the result is

2 answers:

4 0

1/2 + 1/2= 1
1/2 + 1/2 + 1/2= 1 1/2
1/2 + 1/2 + 1/2 + 1/2= 2
1/2 + 1/2 + 1/2 + 1/2 + 1/2= 2 1/2
1/2 + 1/2 + 1/2 + 1/2+ 1/2 + 1/2= 3

Hope this helped! :)

Ivahew [28]3 years ago

3 0

1 is the answer hope this helps

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If ab = 8 and a^2+b^2=16, then what is the value of (a+b)^2 This answer is worth 100 point.

sergejj [24]

Answer:

Step-by-step explanation:

$(a+b)^2 = a^2 + 2ab + b^2$

$(a+b)^2 = a^2 + b^2 + 2ab$

$(a+b)^2=16+2(8)$

$(a+b)^2 = 16 + 16 = 32$

5 0

3 years ago

The probability that a lab specimen contains high levels of contamination is 0.10. Five samples are checked, and the samples are

raketka [301]

Answer:

(a) 0.59049 (b) 0.32805 (c) 0.40951

Step-by-step explanation:

Let's define

$A_{i}$ : the lab specimen number i contains high levels of contamination for i = 1, 2, 3, 4, 5, so,

$P(A_{i})=0.1$ for i = 1, 2, 3, 4, 5

The complement for $A_{i}$ is given by

$A_{i}^{$c$}$ : the lab specimen number i does not contains high levels of contamination for i = 1, 2, 3, 4, 5, so

P( $A_{i}^{$c$}$ )=0.9 for i = 1, 2, 3, 4, 5

(a) The probability that none contain high levels of contamination is given by

P( $A_{1}^{$c$}$ ∩ $A_{2}^{$c$}$ ∩ $A_{3}^{$c$}$ ∩ $A_{4}^{$c$}$ ∩ $A_{5}^{$c$}$ )= $(0.9)^{5}$ =0.59049 because we have independent events.

(b) The probability that exactly one contains high levels of contamination is given by

P( $A_{1}$ ∩ $A_{2}^{$c$}$ ∩ $A_{3}^{$c$}$ ∩ $A_{4}^{$c$}$ ∩ $A_{5}^{$c$}$ )+P( $A_{1}^{$c$}$ ∩ $A_{2}$ ∩ $A_{3}^{$c$}$ ∩ $A_{4}^{$c$}$ ∩ $A_{5}^{$c$}$ )+P( $A_{1}^{$c$}$ ∩ $A_{2}^{$c$}$ ∩ $A_{3}$ ∩ $A_{4}^{$c$}$ ∩ $A_{5}^{$c$}$ )+P( $A_{1}^{$c$}$ ∩ $A_{2}^{$c$}$ ∩ $A_{3}^{$c$}$ ∩ $A_{4}$ ∩ $A_{5}^{$c$}$ )+P( $A_{1}^{$c$}$ ∩ $A_{2}^{$c$}$ ∩ $A_{3}^{$c$}$ ∩ $A_{4}^{$c$}$ ∩ $A_{5}$ )=5×(0.1)× $(0.9)^{4}$ =0.32805

because we have independent events.

P( $A_{1}$ ∪ $A_{2}$ ∪ $A_{3}$ ∪ $A_{4}$ ∪ $A_{5}$ )=1-P( $A_{1}^{$c$}$ ∩ $A_{2}^{$c$}$ ∩ $A_{3}^{$c$}$ ∩ $A_{4}^{$c$}$ ∩ $A_{5}^{$c$}$ )=1-0.59049=0.40951

6 0

3 years ago

Simon used 3 pears and 9 apples to make a fruit salad. what is the ratio of the number of pears to apples

mrs_skeptik [129]

3:9
=1:3
That is the correct answer

4 0

3 years ago

Read 2 more answers

A water tank holds 18,000 gallons. How long will it take the water level to reach 6,000 if the water is used at a rate of 450 ga

beks73 [17]

18,000-6000= 12000/450= 26.67 days

4 0

3 years ago

Four weeks into her attempt at saving money, she has saved $160. Has Suzanne been saving enough money

WITCHER [35]

Answer:

if Suzanne goal was to collect 600+ dollars in 16 weeks than she did achieve it

Step-by-step explanation:

I am not sure what the goal of this mathematical problem is but if you need a specific number of money to be collected multiply the by the number of weeks.

4 weeks ( 4*7)=28

160/28=5.71428571429

5.71428571429-(money per week saved by Suzanne)

if Suzanne continue continue with her saving for the next 12 months she will have a grand total of:

12+4= 16 ( total weeks)

7*16=112

112 * 5.71428571429 = 640

7 0

2 years ago