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ivanzaharov [21]
3 years ago
13

GIVING BRAINLY JUST ANSWER CORRECTLY !!

Mathematics
1 answer:
Vinil7 [7]3 years ago
5 0

Answer:

b. never

Explanation:

A fraction is always in the form p/q, where q is not 0; or can be converted in that form (in case of mixed fraction).

A number is said to be irrational, if it cannot be expressed in the form p/q, where q is not 0.

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If f(x) =ax+b ,f(-3)=-4 and f(3)=2, find the value of a and b please help​
galina1969 [7]

Answer:

a = -⅓

b = 3

Step-by-step explanation:

-3a + b = 4

3a + b = 2

b = 4 + 3a = 2 - 3a

6a = -2

a = -2/6

a = - ⅓

-> b = 4 + 3(-⅓)

b = 4 - 1

b = 3

8 0
2 years ago
Is number 7 correct ? Please help
Zarrin [17]

option D

rent = 25b + 10

where b is hours for boat rented

85 = 25b + 10

25 b = 75

b = 75/25 = 3

3 0
3 years ago
Im giving out brainlys to whoever answers ty!
Katarina [22]

Answer:

77°F

Step-by-step explanation:

Just plug in 25 into the C variable and you get your answer.

4 0
2 years ago
Read 2 more answers
You have drawn a simple random sample of 36 college students, asking each student how much rent they pay per month. You obtain a
Karo-lina-s [1.5K]

Answer:

573-1.690\frac{22}{\sqrt{36}}=566.8033    

573+1.690\frac{22}{\sqrt{36}}=579.1967      

And the 90% confidence interval would be between [566.80 and 579.20]

Step-by-step explanation:

Information given

\bar X=573 represent the sample mean

\mu population mean (variable of interest)

s=22 represent the sample standard deviation

n=36 represent the sample size  

Confidence interval

The confidence interval for the mean is given by the following formula:

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}   (1)

The degrees of freedom are given by:

df=n-1=36-1=35

The Confidence level is 0.90 or 90%, the significance would be \alpha=0.1 and \alpha/2 =0.05, and the critical value for this case would be t_{\alpha/2}=1.690

And replacing we got:

573-1.690\frac{22}{\sqrt{36}}=566.8033    

573+1.690\frac{22}{\sqrt{36}}=579.1967    

And the 90% confidence interval would be between [566.8033 and 579.1967]

6 0
3 years ago
Find the values of x and y if (-x + 5, 1) = (-y, 2x - 5y).
MrMuchimi

Answer:

x = 8, y = 3

Step-by-step explanation:

Equating corresponding x and y coordinates , then

- y = - x + 5 ( multiply through by - 1 )

y = x - 5 → (1)

2x - 5y = 1 → (2)

Substitute y = x - 5 into (2)

2x - 5(x - 5) = 1 ← distribute and simplify left side

2x - 5x + 25 = 1

- 3x + 25 = 1 ( subtract 25 from both sides )

- 3x = - 24 ( divide both sides by - 3 )

x = 8

Substitute x = 8 into (1) for corresponding value of y

y = 8 - 5 = 3

7 0
2 years ago
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