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3 years ago

I need these 2 questions answered fast please.

Mathematics

1 answer:

shtirl [24]3 years ago

5 0

Answer:

75 ft / none of these (43)

Step-by-step explanation:

formula: (area =1/2bh)

so you take base × height and then take half of that number (divide by 2)

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If two circles have the same circumference what do you know about their area

Usimov [2.4K]

If the circumference is half of the perimeter than the area for both circles would be half of them find one circles area and half it

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3 years ago

Candace said I'm thinking of a fraction. If I divide it by 1/2,I get 3/11.what fraction was Candace thinking of??

Pavlova-9 [17]

Multiply back by 1/2, to get 3/22.

6 0

3 years ago

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What is the 5/9 its a equivalent fraction

Talja [164]

You can just multiply the top and the bottom by the same number, and you will get equivalent fractions.

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3 years ago

The mean temperature for the first 7 days in January was 3 °C.

g100num [7]

Answer:

3.5 °C

Step-by-step explanation:

To find the answer multiply 3 and 7 to get the sum of the temperatures in the first seven days.

3 x 7 = 21

Add 21 and 8 together to get the sum of the temperatures in the first 8 days.

21 + 8 =29

Divide 29 by 8 to get the mean temperature for the first eight days.

29 ÷ 8 = 3.5

3.5 °C

8 0

3 years ago

Read 2 more answers

The weights of adult male birds of a certain species are normally distributed with a mean of 27.5 grams and a standard deviation

Korvikt [17]

Answer:

The z-score of a male bird of this species with a weight of 29.37 grams is 1.7.

Step-by-step explanation:

We are given that the weights of adult male birds of a certain species are normally distributed with a mean of 27.5 grams and a standard deviation of 1.1 grams.

Let X = weights of adult male birds of a certain species

So, X ~ Normal( $\mu=27.5,\sigma^{2} =1.1^{2}$ )

The z score probability distribution for normal distribution is given by;

Z = $\frac{ X-\mu}{\sigma } }$ ~ N(0,1)

where, $\mu$ = population mean weight = 27.5 grams

$\sigma$ = standard deviation = 1.1 grams

The Z-score measures how many standard deviations the measure is away from the mean. After finding the Z-score, we look at the z-score table and find the p-value (area) associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X.

SO, the z-score of a male bird of this species with a weight of 29.37 grams is given by;

Z score = $\frac{ X-\mu}{\sigma } }$ = $\frac{ 29.37-27.5}{1.1 } }$

= 1.7

4 0

3 years ago

I need these 2 questions answered fast please.​

I need these 2 questions answered fast please.