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Mrac [35]
2 years ago
5

Help please

Mathematics
2 answers:
kozerog [31]2 years ago
5 0
Jane has 12 cooking books.If you divide 60( the total amount of books) by the 1/5 amonut of cooking book you get 12 which is the amount of cooking books Jane has.
ale4655 [162]2 years ago
4 0

Answer:

12 cooking books

Step-by-step explanation:

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If you guys can help me out i would rly love that
egoroff_w [7]
1. One solution
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3 0
2 years ago
-18y + 7 = -29. What does y equal. (I’m very bad at math)
Olin [163]

Answer:

y=2 (correct if wrong)

Step-by-step explanation:

-18y + 7 = -29

-7 -7

-18y = -36

-18/-18 -36/-18

4 0
2 years ago
Read 2 more answers
Northlake High School has two lunch periods. Students can eat their lunch in
attashe74 [19]

Answer:

b

Step-by-step explanation:

8 0
1 year ago
Read 2 more answers
The National Coffee Association reported that of U.S. adults drink coffee daily. A random sample of U.S. adults is selected. Rou
kirill115 [55]

The question is incomplete. The complete question is :

The National Coffee Association reported that 62% of U.S. adults drink coffee daily. A random sample of 225 U.S. adults is selected. Round your answers to at least four decimal places as needed.

Required:

a. Find the mean μ.

b. Find the standard deviation σ.

c. The standard deviation σ.

Solution :

a). Percentage of the US adults who drinks coffee daily = 62%

Therefore, the mean, μ = 0.62

b). We know, p = μ = 0.62

And n = 225

Therefore, the standard deviation is given by :

$\sigma=\sqrt{\frac{p\times (1-p)}{n}}$

 $=\sqrt{\frac{0.62\times (1-0.62)}{225}}$

 $=\sqrt{\frac{0.62\times 0.38}{225}}$

 $=0.0324$

c). Standard deviation, σ = 0.0324

3 0
3 years ago
johnathan class has 30 boys of the students in his class 60% are girls how many girls are in johnathans class
Gekata [30.6K]

Answer:

45 girls

Step-by-step explanation:

If 60% of the class is girls then 40% of the class is boys.

30 boys are in the class, meaning that 40% of the class comprises those 30 boys

First, we need the total number of class members: 30/x = 40/100 -> 40x=3000 -> x=3000/40 -> x=75

Now that we know the total class members, at 75, we can calculate the number of girls in the class. You can do this:

0.6*75=45

or

60/100=x/75 and solve for x

5 0
3 years ago
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