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sergiy2304 [10]

3 years ago

11

There are 42 kids on the playground. Then 26 more kids come out to join them. How many kids are now on the playground all togeth

er?
Write a number sentence, draw model, and write a sentence to tell how you solved it.

2 answers:

aev [14]3 years ago

8 0

Answer:

68

Step-by-step explanation:

ch4aika [34]3 years ago

8 0

Answer:

68

Step-by-step explanation:

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The cable company takes an SRS of 250 of the approximately 15,000 households who subscribe to them. They found that 75 percent o

kati45 [8]

Answer:

Answer; Mean = p = 0.75

Standard deviation =0.0274

Step-by-step explanation:

Mean = p = 0.75

Standard deviation = √ [ p ( 1 - p) / n ]

= √ [ 0.75 * ( 1 - 0.75) / 250]

= 0.0274

5 0

3 years ago

What is the answer meyn?

Alexandra [31]

Answer:

the best value is two 50 ml bottles

Step-by-step explanation:

Okay focus with me , if you buy a bottle of 50 ml you will get a second for half price so we can say that --> 2 bottles of 50 ml =

$45 + \frac{45}{2} = 67.5$

We get 100 ml with £67.5 just , but when you buy 80ml you must pay £55 Hum !

then you can dived the volume of bottle with price ...

the price of one ml is 0.675 in first State

$\frac{67.5}{100 } = 0.675$

in the second state the price of one ml is

$\frac{55}{80} = 0.6875$

then :

$0.675 < 0.6875$

so the best value is two 50 ml bottles

4 0

3 years ago

X(x+7)=0 solve whatever this id

Anit [1.1K]

Step-by-step explanation:

x(x + 7) = 0

By Zero Product rule,

either x = 0 or (x + 7) = 0.

=> x = 0 or x = -7.

5 0

3 years ago

Classify the model as Exponential GROWTH or DECAY.<br> A=1200(.85)6

BartSMP [9]

Answer: DECAY

Step-by-step explanation:

(.85) is less than 1

3 0

3 years ago

Hospital records show that a certain surgical procedure takes on an average 111.6 minutes with a standard deviation of 2.8 minut

Arisa [49]

Answer:

At least 37.74% of the procedures takes between 97.6 and 125.6 minutes

Step-by-step explanation:

The percentage is the area of the standard normal distribution curve between the values 97.6 and 125.6

The standard normal variate of the given data is found as

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

Thus for the given values Z is calculated as under

$Z_1=\frac{97.6-111.6}{2.8}=-5$

Similarly for the other value we have

$Z_2=\frac{125.6-111.6}{2.8}=5$

Thus the area between the calculated values can be found from standard normal distribution table to be 37.74%

8 0

3 years ago