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Hunter-Best [27]
2 years ago
14

Is this right or not because I’m doubting it

Mathematics
1 answer:
olya-2409 [2.1K]2 years ago
3 0

Answer: yes it is

Step-by-step explanation:

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Darla is taking a survey at her school. She finds that 20 out of 100 students have fish as pets. This means that her experimenta
Arisa [49]

Answer:

The second option

Step-by-step explanation:

This is because the more samples she has, the closer her experimental probability will be to the real value.

6 0
3 years ago
The sum of two numbers is 97. One number is 1 more than twice the other number. Find the two numbers.​
guajiro [1.7K]

Answer:

The 2 numbers are 32 and 65.

Step-by-step explanation:

x + y = 97   where x and y are the 2 numbers.

x = 2y + 1

Substituting for x in the first equation:

2y + 1 + y = 97

3y = 96

y = 32.

So x = 2y + 1 = 64 + 1 = 65.

4 0
3 years ago
The probability density function f(x) of a random variable X that has a uniform distribution between a and b is:
Lunna [17]

The probability density function (pdf) is;

f(x)=\frac{1}{b - a} for a ≤ x ≤ b.

while the mean is given as \frac{a + b}{2}

And the standard deviation given as \sqrt{\frac{(b - a)^{2} }{12} }

3 0
3 years ago
Read 2 more answers
Last year Andrea's annual salary was A dollars and she was paid biweekly. This year she received a
Cloud [144]

Biweekly salary last year algebraically will be S = (27)A.  Semimonthly salary this year algebraically will be S = ( A + R )6.

<h3>What is an expression?</h3>

Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.

Given that Last year, Andrea's annual salary was A dollar and she was paid biweekly. This year she received a raise of R dollars per year. She is now paid semimonthly.

Biweekly salary last year algebraically will be:-

S = (27)A.

Semimonthly salary this year algebraically will be:-

S = ( A + R )6.

Therefore, the biweekly salary last year algebraically will be S = (27)A.  Semimonthly salary this year algebraically will be S = ( A + R )6.

To know more about expression follow

brainly.com/question/723406

#SPJ1

7 0
2 years ago
Find f(-2).<br><br> f(x) = 9x2 - 5x + 2 <br> A) 14 <br> B) 18 <br> C) 28 <br> D) 48
kifflom [539]
F(x) = 9x²<span> - 5x + 2 

</span>f(-2) = 9(-2)² - 5(-2) + 2
<span>f(-2) = 36 + 10 + 2 
</span><span>f(-2) = 48</span>
3 0
3 years ago
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