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3 years ago

PLEASE HELP! Which of the following ordered pairs is a solution to the given system of equations?

Mathematics

2 answers:

Paha777 [63]3 years ago

8 0

Answer:

A.............

Step-by-step explanation:

. ..........

Eduardwww [97]3 years ago

4 0

Answer:

C. (3,3)

Step-by-step explanation:

When These equations are both graphed the solution for these equations when they intersect is (-3,3)

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4 years ago

Let f be the function that determines the area of a circle (in square cm) that has a radius of r cm. That is, f ( r ) represents

Zepler [3.9K]

Answer:

(a)f(4) square cm.

(b)f(10.91)-f(10.9) Square centimeter.

Step-by-step explanation:

f(r)=the area of a circle (in square cm) that has a radius of r cm.

(a)Area (in square cm) of a circle whose radius is 4 cm.

Since r=4cm

Area of the circle = f(4) square cm.

(b) When the radius of the increases from 10.9 to 10.91 cm.

Area of the circle with a radius of 10.91 = f(10.91) square cm.
Area of the circle with a radius of 10.9 = f(10.9) square cm.

Change in the Area = f(10.91)-f(10.9) Square centimeter.

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4 years ago

Functionally important traits in animals tend to vary little from one individual to the next within populations, possibly becaus

Jet001 [13]

Answer:

The 95% confidence interval for the standard deviation is (0.14, 0.54).

Step-by-step explanation:

The complete data and question is:

Sloth CW Ratios ; {1.5 , 1.09 , 0.98 , 1.42 , 1.49 , 1.25}

The 95% confidence interval for the standard deviation of this data is < σ < (two decimals - include the leading zero) .

Solution:

Compute the sample standard deviation as follows:

$\bar x=\frac{1}{n}\sum x=\frac{1}{6}\times 7.73=1.2883\\\\s=\sqrt{\frac{1}{n-1}\sum (x-\bar x)^{2}}=\sqrt{\frac{1}{6-1}\times 0.2387}=0.2185$

The (1 - <em>α</em>)% confidence interval for the variance is:

$CI=\frac{(n-1)s^{2}}{\chi^{2}_{\alpha/2}}$

Confidence level = 95%

⇒ α = 0.05

The degrees of freedom is,

df = n - 1 = 6 - 1 = 5

Compute the critical values of Chi-square:

$\chi^{2}_{\alpha/2, (n-1)}=\chi^{2}_{0.025,5}=12.833\\\\\chi^{2}_{1-\alpha/2, (n-1)}=\chi^{2}_{0.975,5}=0.831$

*Use a Chi-square table.

Compute the 95% confidence interval for the variance as follows:

$CI=\frac{(n-1)s^{2}}{\chi^{2}_{\alpha/2}}$

$=\frac{5\times (0.2185)^{2}}{12.833}$

Thus, the 95% confidence interval for the standard deviation is (0.14, 0.54).

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4 years ago

Choose each of the following that ARE a function

telo118 [61]

Ik that A and F are for sure but I think D maybe one as well.

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4 years ago

Phoebe surveyed teens and adults to find the average number of hours of sleep they get during the week. Her results are shown be

Thepotemich [5.8K]

Answer:

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Step-by-step explanation:

i did the test and got 100

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3 years ago

Read 2 more answers