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VladimirAG [237]
2 years ago
5

Help help math math math

Mathematics
2 answers:
Licemer1 [7]2 years ago
8 0

Answer:

-3/7,0

Step-by-step explanation:

Morgarella [4.7K]2 years ago
7 0
The answer is x = 8

thank u
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Twelve is 60% of which number? simplify​
Dmitrij [34]

Answer:

20

Step-by-step explanation:

60% is 3/5 as a fraction

so i divided 12 by 3 and got 4

to find the whole u times 4 by 5 equals 20

6 0
3 years ago
Please help me with this question ❤️
scoundrel [369]

Answer:

The formula to find the volume of a cylinder is V = πr2h

The diameter divided by 2 is the radius. 5.5 divided by 2 is 2.75

v = π2.752 16.5

V = 391.8

The answer is 391.8

I hope this helps please mark me Brainliest! Have a nice day!

8 0
3 years ago
Researchers examined the bill color (in hue degree) of male and female zebra finches. Here are the summary statistics from the s
sesenic [268]

Answer:

The answer to this question can be defined as follows:

Step-by-step explanation:

In the question some iformation is missing, which can be defined as follows:

Given:

The value of males:

n_1= 59\\s_1= 1.46\\\bar y_1=2.91\\

The value of Females:

n_2=60\\s_2= 2.48\\\bar y_2=7.42\\

Calculating Degrees of Freedom:

\bold{ df=\frac{\frac{s_1^2}{n_1}+\frac{s_2^2}{n_2}}{ \frac{1}{n_1-1} (\frac{s_1^2}{n_1})^2+\frac{1}{n_2-1} (\frac{s_2^2}{n_2})^2}}\\\\\\

    =\frac{(\frac{1.46^2}{59}+\frac{2,48^2}{60})^2}{ \frac{1}{59-1} (\frac{1.46^2}{59})^2+\frac{1}{60-1} (\frac{2.48^2}{60})^2}\\

    =9.58 or 95

\alpha= 1-0.95\\\\

   = 0.05

for 95% confidence interval are:

\frac{\alpha}{2} = \frac{0.05}{2} = 0.025  

From its t-distribution table , the value of t has an region of (\frac{\alpha}{2} \ \ 0.025) for (df=95) in its upper tail.

shall be given by = t {0.025}=1.985

Calculating the margin of Error:

M_OE =t_{0.025} \times \sqrt{\frac{s_1^2}{n_1}+\frac{s_2^2}{n_2}}

         =1.985\times \sqrt{\frac{1.46^2}{59}+\frac{2.48^2}{60}}\\\\=0.739

The difference in mean bill color "\mu_2 -\mu_1" with 95% confidence intervals:

\to (7.42 - 2.91) \pm 0.739\\\\\to 4.51 \pm 0.739

Lower limit=3.771

Upper limit = 5.249

6 0
3 years ago
Factor to the prime factors: 20
Margarita [4]
20 = 2 * 10 = 2 * 2 * 5 = \bf 2^2 * 5
4 0
4 years ago
Add to negative 20 and multiply to 21
likoan [24]
-20+13=-7 ,  -7 multiplied by -3 equals 21
7 0
3 years ago
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