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3 years ago

The diagram shows a sector of a circle of radius 6 units, formed from an angle of size 310,

Mathematics

1 answer:

BARSIC [14]3 years ago

8 0

Answer:

32.47619

Step-by-step explanation:

length of the arc =310/360 ×2(22/7)×6

=32.47619 units

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Do anyone know the answer to this problem?

dimaraw [331]

Answer: An = 36 + 2(n - 1)

Step-by-step explanation:

If the height of the tree grows by 2 inches every year, then the height of the tree is increasing in arithmetic progression. The The formula for determining the nth term of an arithmetic sequence is expressed as

An = a + d(n - 1)

Where

a represents the first term of the sequence.

d represents the common difference.

n represents the number of terms in the sequence.

From the information given,

a = 36 inches

d = 2 inches

Therefore, the explicit rule representing this situation is

An = 36 + 2(n - 1)

8 0

4 years ago

Help plz:))) I’ll mark you BRAINLIEST

Virty [35]

Answer:

If i'm not mistaken X=3 and Y=16

hope his helps

5 0

3 years ago

A manufacturer of coffee vending machines has designed a new, less expensive machine. The current machine is known to dispense (

cupoosta [38]

Answer:

$t=(15-1) [\frac{0.219}{0.2}]^2 =16.7864$

$p_v = 2*P(\chi^2_{14}>16.786)=0.5355$

And the 2 is because we are conducting a bilateral test.

$\alpha=0.05$ since the the $p_v >0.05$ we fail to reject the null hypothesis.

$\alpha=0.01$ since the the $p_v >0.01$ we fail to reject the null hypothesis.

Step-by-step explanation:

Data given

$\mu=7$ population mean (variable of interest)

$\sigma=0.2$ represent the population standard deviation

$s=0.219$ represent the sample deviation

n=15 represent the sample size

$\alpha=0.05,0.01$ represent the values for the significance level

Hypothesis test

On this case we want to check if the population standard deviation is equal or not to 0.2, so the system of hypothesis are:

H0: $\sigma = 0.2$

H1: $\sigma \neq 0.2$

In order to check the hypothesis we need to calculate the statistic given by the following formula:

$t=(n-1) [\frac{s}{\sigma_o}]^2$

This statistic have a Chi Square distribution distribution with n-1 degrees of freedom.

What is the value of your test statistic?

Now we have everything to replace into the formula for the statistic and we got:

$t=(15-1) [\frac{0.219}{0.2}]^2 =16.7864$

P value

We know the degrees of freedom of the distribution 14 on this case and we can find the p value like this:

$p_v = 2*P(\chi^2_{14}>16.786)=0.5355$

And the 2 is because we are conducting a bilateral test.

$\alpha=0.05$ since the the $p_v >0.05$ we fail to reject the null hypothesis.

$\alpha=0.01$ since the the $p_v >0.01$ we fail to reject the null hypothesis.

3 0

3 years ago

The perimeter of a rectangle is 90 inches. The width of the rectangle is 9 inches less than the length of the rectangle find the

Sphinxa [80]

Answer:

810

Step-by-step explanation:just

just multiply both numbers

7 0

3 years ago

Giving brainliest help I need it, ignore answers I put unless their right

NeTakaya

Answer:

For the middle one 20 /9 or 2 and 2/9

Step-by-step explanation:

20 /9 or 2 and 2/9

Do you need help with the rest or no?

3 0

3 years ago