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3 years ago

Can someone help me, please????

Mathematics

2 answers:

nata0808 [166]3 years ago

8 0

Answer:

Step-by-step explanation:

the answer is the green one

marysya [2.9K]3 years ago

6 0

Answer:

Dilation

Step-by-step explanation:

The original shape reduced to make a prime shape. It is a diliation because it's the same shape

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A certain paint is sold in both 1-gal cans and 1-qt cans.The gallon can cost $13 and the quart can cost $5.How much do you save

tatuchka [14]

You save $2 per gallon

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3 years ago

-3+(-4) • 5 + 10???? I need help!!!

Andrew [12]

Answer:

-13

Step-by-step explanation:

used a calculator ._.

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4 years ago

The following random sample was selected from a normal distribution: 4.5, 6.4, 2.3, 1.8, 5.3, then the 95% confidence interval t

kap26 [50]

Answer:

the 95% confidence interval to estimate the population mean is between 1.62 and 6.50

Step-by-step explanation:

given data

distribution = 4.5, 6.4, 2.3, 1.8, 5.3

so n = 5

confidence interval = 95%

to find out

the population mean is between

solution

first we calculate the mean i.e.

mean = $\frac{1}{n}\sum_{i=1}^{n}x(i)$

mean = 4.5+ 6.4+ 2.3+ 1.8+ 5.3 / 5

mean = 4.06

now we calculate the standard deviation i.e.

standard deviation = $\sqrt{\frac{1}{n-1}\sum (x(i)-mean)^2}$

standard deviation = $\sqrt{\frac{1}{5-1}\sum (x(i)-mean)^2}$

standard deviation = $\sqrt{\frac{1}{5-1} (4.5-5)^2+(6.4-5)^2 +(2.3-5)^2+(1.8-5)^2+(5.3-5)^2}$

standard deviation = $\sqrt{\frac{1}{4} (4.5-5)^2+(6.4-5)^2 +(2.3-5)^2+(1.8-5)^2+(5.3-5)^2}$

standard deviation = 2.226544

so 95 % confidence interval is i.e. mean +/- t(5) * standard deviation/ $\sqrt{n}$

here t(5) will be 2.45

95 % confidence interval= 4.06 +/- 2.45 * 2.226 / $\sqrt{5}$

95 % confidence interval= 1.62 and 6.50

4 0

3 years ago

Evaluate. 3⋅(1−210−3)+12

jenyasd209 [6]

Your answer would be -624 because 1-210-3= -212 then 3 times -212 +12= -624

8 0

3 years ago

Read 2 more answers

2.631*4.5 please please

Mashcka [7]

Answer:2839.5

Step-by-step explanation:

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3 years ago