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3 years ago

Solution 2 > x/3 -1

Mathematics

2 answers:

Dmitry_Shevchenko [17]3 years ago

6 0

Answer:

X < 9

Step-by-step explanation:

Add 1 to both sides

3 > x/3

multiply by 3 to get x by itself

9 > x

x < 9

olganol [36]3 years ago

3 0

Answer:

the answer is x<9

Step-by-step explanation:

Add 1 to -1 and 2

then multiply both sides by 3 and flip the sign

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Width of the miniature model = $3\frac{3}{4}$ inches

Length of the miniature model = $5\frac{1}{2}$ inches

The actual width of the boat = 15 feet

Let us find the actual length of the boat.

Write it in a proportion form.

width of model : length of model : : width of actual : length of actual

$$\Rightarrow 3\frac{3}{4}:5\frac{1}{2}::15:x$

$$\Rightarrow\frac{15}{4}:\frac{11}{2}::15:x$

$$\Rightarrow\frac{\frac{15}{4}}{\frac{11}{2}} =\frac{15}{x}$

Do cross multiplication.

$$\Rightarrow{\frac{15}{4}x =15\times\frac{11}{2}$

$$\Rightarrow{\frac{15}{4}x =\frac{165}{2}$

$$\Rightarrow x =\frac{165}{2}\times{\frac{4}{15}$

⇒ x = 22

Hence the actual length of the boat is 22 feet.

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3 years ago

Paulo catches a 7.45 am tram to school. During a period of 79 days, he arrives at school on time 53 occasions. Estimate the prob

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Answer:

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Late: 0.33

Step-by-step explanation:

Probabilities

One approach to estimating the probability of occurrence of an event is to record the number of times that event happens (e) and compare it with the total number of trials (n).

The probability can be estimated with the formula:

$\displaystyle P=\frac{e}{n}$

And the probability that the event doesn't occur is

Q = 1 - P

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$\displaystyle P=\frac{53}{79}$

P = 0.67

And the probability he arrives late is:

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3 years ago