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3 years ago

Please solve. (1 1/2 x 3 3/4) - ( 2 3/5 / 1 1/2)

Mathematics

2 answers:

ale4655 [162]3 years ago

7 0

First convert the mixed numbers to improper fractions

= (3/2 * 15/4) - (13/5 * 3/2)

= 45/8 - 39/10

= 225/40 - 156/40

= 69/40

= 1 29/40 Answer

Nostrana [21]3 years ago

5 0

For that answer i got 3 -2/120 but I'm not sure about it

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The number of girl child per family was recorded for 1000 families with 3 children. The data obtained was as follows: [2] Number

ira [324]

Answer:

$a.\ Probability = 0.426$

$b.\ Probability = 0.574$

Step-by-step explanation:

Given

$Total\ Families = 1000$

Number of Girls : 0 ----> 1 -----> 2 ------->3

Number of Families: 112 -> 314 --> 382 ---> 192

Solving (a): At most one girl

From the table, the number of families with at most one girl is: 112 + 314

i.e.

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Number of Families: 112 -> 314

So, we have:

$At\ Most\ One\ Girl = 112 + 314$

$At\ Most\ One\ Girl = 426$

The probability is then calculated as:

$Probability = \frac{At\ Most\ One\ Girl}{Total}$

$Probability = \frac{426}{1000}$

$Probability = 0.426$

Solving (b): More girls

From the table, the number of families with more girl is: 382 + 192

i.e.

Number of Girls : -----> 2 ------->3

Number of Families: --> 382 ---> 192

So, we have:

$More\ Girls = 382 + 192$

$More\ Girls = 574$

The probability is then calculated as:

$Probability = \frac{More\ Girls}{Total}$

$Probability = \frac{574}{1000}$

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4 0

3 years ago

X-5<br> 2<br> = 7<br> =<br> Solve for x

erica [24]

x = √ 7 + 5 , − √ 7 + 5

x = 7.64575131 … , 2.35424868 …

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4 years ago

Read 2 more answers

I don't quite understand when my test asks, "x when f(x)=-2" can someone please help?

Alinara [238K]

Answer:

f(x) means y. So basically what is x when y = -2

Step-by-step explanation:

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3 years ago