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Sveta_85 [38]
3 years ago
11

the middletown zoo has 130 different exhibits.of those 130 exhibits 30%of the exhibits contain birds. how many exhibits contain

birds
Mathematics
2 answers:
Scilla [17]3 years ago
6 0
So percent means part out of 100
30%=30/100=3/10
'of' means mutliply
30% of 130 is birds
3/10 times 130=birds
390/10=birds
39=birds

there are 39 exhibits with birds
Novosadov [1.4K]3 years ago
6 0
39 exhibits
130 exhibits x 0.3 = 39 exhibits
30% = 0.3
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A large furniture company claims that 65% of all individuals who buy chairs from its stores choose wood chairs, 20% choose plast
Nataly [62]

Answer:

In the sample, 61% chose wooden chairs (4% less than that claimed by the company), 24.2% chose plastic chairs (4.2% more than that claimed by the company), and 14.8 % chose metal chairs (0.2% less than what the company claimed). Therefore, given that these are differences of less than 5%, we can affirm that these samples are consistent with what the company said.

Step-by-step explanation:

Given that a large furniture company claims that 65% of all individuals who buy chairs from its stores choose wood chairs, 20% choose plastic chairs, and 15% choose metal chairs, and to investigate this claim researchers collected data from a random sample of the companys customers, whose results were 305 wood, 121 plastic, and 74 metal, to determine if the data from the sample consistent with the companys claim the following calculations should be performed:

305 + 121 + 74 = 500

500 = 100

305 = X

305 x 100/500 = X

30,500 / 500 = X

61 = X

500 = 100

121 = X

121 x 100/500 = X

12,100 / 500 = X

24.2 = X

100 - 61 - 24.2 = X

39 - 24.2 = X

14.8 = X

Therefore, in the sample, 61% chose wooden chairs (4% less than that claimed by the company), 24.2% chose plastic chairs (4.2% more than that claimed by the company), and 14.8 % chose metal chairs (0.2% less than what the company claimed). Therefore, given that these are differences of less than 5%, we can affirm that these are samples that are consistent with what the company said.

4 0
2 years ago
Read 2 more answers
1. Isiah wants to bring cupcakes for 54 of his friends. One box of cupcakes is
AleksandrR [38]

Answer:

6 boxes.

Step-by-step explanation:

6 0
2 years ago
In which step does a mistake first occur?
kumpel [21]

Answer:

Step 3. 4 ÷ 2

Step 4. 2

these two steps are wrong

(24 ÷ 3 + 10) - 14 ÷ 2

(8 + 10) - 14 ÷ 2

(8 + 10) - 7

18 - 7

11

Note : See the explanation and get the answer

7 0
2 years ago
Read 2 more answers
123
ser-zykov [4K]

First, I'm going to separate factor the expression inside of the square root.

sqrt[ (2/18) * (x^5) ]

sqrt[ (1/9) * (x^5) ]

We can take the square root of 1/9 easily, because 1 and 9 are both perfect squares. The square root of 1/9 is 1/3.

Looking at the x^5, we can separate it into x^2 * x^2 * x^1. The square root of x^2 is x. So, we now also have an x^2 on the outside because there are two x^2s in our expanded form.

ANSWER: (x^2 * sqrt(x)) / 3

(Option 1)

Hope this helps!

4 0
2 years ago
I NEED THE ANSWER ASAP FOR MY TEZT PLZ HELP ME
bonufazy [111]

Step-by-step explanation:

{52, 72, 86, 105}

this is the answer

5 0
2 years ago
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