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creativ13 [48]
3 years ago
8

Help ill give brainliest!!!!!!! ^^

Mathematics
1 answer:
Strike441 [17]3 years ago
3 0

Answer:

15 days

Step-by-step explanation:

Well, as you would be able to tell, you just have to find the LCM of 3 and 5. These do not have one before 3 x 5, so it is 15.

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A college student is taking two courses. The probability she passes the first course is 0.67. The probability she passes the sec
andrezito [222]

Answer:

0.58 = 58% probability she passes both courses

Step-by-step explanation:

We can solve this question treating the probabilities as a Venn set.

I am going to say that:

Event A: She passes the first course.

Event B: She passes the second course.

The probability she passes the first course is 0.67.

This means that P(A) = 0.67

The probability she passes the second course is 0.7.

This means that P(B) = 0.7

The probability she passes at least one of the courses is 0.79.

This means that P(A \cup B) = 0.79

a. What is the probability she passes both courses

This is P(A \cap B).

We use the following relation:

P(A \cup B) = P(A) + P(B) - P(A \cap B)

So

P(A \cap B) = P(A) + P(B) - P(A \cup B) = 0.67 + 0.7 - 0.79 = 0.58

0.58 = 58% probability she passes both courses

5 0
3 years ago
I need help with my Math homework please​
Elza [17]

Answer:

Step-by-step explanation:

  • per year=2%
  • 5 years=10%
  • 6 years=12%
  • 7 years=14%
  • 8 years=16%    

So basically ur adding  2 % every year.

6 0
1 year ago
Read 2 more answers
a bathtub is filled with 38 1/3 gallons of water. if 2 3/5 gallons splash out, how much water is left in the tub?
PilotLPTM [1.2K]

Answer:

3/5^3

3/5^3 = 27

125

= 0.216

Step-by-step explanation:

Rules for expressions with fractions:

Fractions - use the slash “/” between the numerator and denominator, i.e. for five-hundredths enter 5/100. If you are using mixed numbers be sure to leave a single space between the whole number and fraction part.

The slash separates the numerator (number above a fraction line) and denominator (number below).

Mixed numerals (mixed fractions or mixed numbers) write as non-zero integer separated by one space and fraction i.e., 1 2/3 (having the same sign). An example of a negative mixed fraction: -5 1/2.

Because slash is both signs for fraction line and division, we recommended use colon (:) as operator of division fractions i.e., 1/2 : 3.

Decimals (decimal numbers) enter with a decimal point . and they are automatically converted to fractions - i.e. 1.45.

Colon : and slash / is the symbol of division. Can be used to divide mixed numbers 1 2/3 : 4 3/8 or can be used for write complex fractions i.e. 1/2 : 1/3.

An asterisk * or × is the symbol for multiplication.

Plus + is addition, minus sign - is subtraction and ()[] is mathematical parentheses.

The exponentiation/power symbol is ^ - for example: (7/8-4/5)^2 = (7/8-4/5)2

Calculator follows well-known rules for order of operations. Most common mnemonics for remembering this order of operations are:

PEMDAS - Parentheses, Exponents, Multiplication, Division, Addition, Subtraction.

BEDMAS - Brackets, Exponents, Division, Multiplication, Addition, Subtraction

BODMAS - Brackets, Of or Order, Division, Multiplication, Addition, Subtraction.

GEMDAS - Grouping Symbols - brackets (){}, Exponents, Multiplication, Division, Addition, Subtraction.

Be careful, always do multiplication and division before addition and subtraction. Some operators (+ and -) and (* and /) has the same priority and then must evaluate from left to right.

8 0
3 years ago
Read 2 more answers
Voltage sags and swells. Refer to the Electrical Engineering (Vol. 95, 2013) study of transformer voltage sags and swells, Exerc
Artist 52 [7]

Answer:

a. z-score for the number of sags for this transformer is  ≈ 1.57 . The number of sags found in this transformer is within the highest 6% of the number of sags found in the transformers.  

b. z-score for the number of swells for this transformer is ≈ -3.36. The number of swells found in the transformer is extremely low and within the lowest 1%

Step-by-step explanation:

z score of sags and swells of a randomly selected transformer can be calculated using the equation

z=\frac{X-M}{s} where

  • X is the number of sags/swells found
  • M is the mean number of sags/swells
  • s is the standard deviation

z-score for the number of sags for this transformer is:

z=\frac{400-353}{30} ≈ 1.57

the number of sags found in the transformer is within the highest 6% of the number of sags found in the transformers.  

z-score for the number of swells for this transformer is:

z=\frac{100-184}{25} ≈ -3.36

the number of swells found in the transformer is extremely low and within the lowest 1%

5 0
3 years ago
Given a unit circle, what is the<br> value for y?<br> (1/3, y)<br> y = ?
BigorU [14]

Answer:

y=+\frac{2\sqrt{2} }{3}\\

Step-by-step explanation:

<h2>In the unit circle we have:</h2><h2>x^{2} +y^{2} =1</h2>

In the picture we see that x=1/3.

<h2>Using de equation of unit circle:</h2>

(\frac{1}{3} )^{2} +y^{2} =1\\\\\frac{1+9y^{2} }{9}=\frac{9}{9}  \\\\y^{2} =\frac{8}{9} \\\\\sqrt{y^{2}} =\sqrt{\frac{8}{9}}\\\\y=+\frac{2\sqrt{2} }{3}

y is positive because y are in the first quadrant of the cartesian plane.

8 0
3 years ago
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