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strojnjashka [21]
3 years ago
9

What is the cost of 1 dozen carnations if 30 cost $50.00?

Mathematics
2 answers:
ratelena [41]3 years ago
7 0
30/$50=12(the dozen)/x. x is the cost of a dozen carnations. Cross multiply for 30x=600. Divide both sides by 30 to get x by itself. x=20. $20 per dozen.
prisoha [69]3 years ago
4 0
Let's create a ratio of amount to price

if
30:$50
then
12:x

30/12 = 2.5
50/2.5 = 20

30:$50
12:$20

Another way of looking at it is like this:

If 30, costs $50, then each 3 would cost $5. Four groups of 3 in 12. 4 * $5 = $20

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Mrac [35]

Answer:

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Step-by-step explanation:

4 0
3 years ago
A 95% confidence interval for the mean number of television per American household is (1.15, 4.20). For each of the following st
liq [111]

Answer:

a. False

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Step-by-step explanation:

The 95% is confidence interval its not a probability estimate. The probability will be different from the confidence interval. Confidence interval is about the population mean and is not calculated based on sample mean. Every confidence interval contains the sample mean. There is 95% confidence that the number of televisions per American household is between 1.15 to 4.20.

7 0
2 years ago
Help with 2 questions please.
Natasha_Volkova [10]
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7 0
3 years ago
Please help!!!!!!!!!!
lapo4ka [179]

Answer: 18.7

Step-by-step explanation:

Find the lengths of AB, BC, and CA

AB = \sqrt{(4-(-1))^{2} + (-1-4)^{2} } = 5\sqrt{2} ≈ 7.1

BC = \sqrt{(0-(-1))^{2} + (-3-4)^{2} } = 5\sqrt{2} ≈ 7.1

CA = \sqrt{(0-4)^{2} + (-3-(-1))^{2} } = 2\sqrt{5} ≈ 4.5

7.1 + 7.1 + 4.5 = 18.7

6 0
2 years ago
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Answer:

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range=16

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