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3 years ago

Please help with this math question no one bothered to help me plzz :(

Mathematics

1 answer:

Pavel [41]3 years ago

5 0

Answer:

202 answer

Step-by-step explanation:

divide and then multiply 1/2

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What is the equation of the circle with center (1,1) that passes through the point (-3,4)?

MakcuM [25]

Answer:

(x - 1)2 + (y - 1)² = 5²

Step-by-step explanation:

Adapt the standard equation of a circle with center at (h, k) and radius r:

(x - 1)^2 + (y - 1)^2 = r^2

Here one point on the circle is (-3, 4), and so the radius is √[(-3)² + 4² ] = 5

Thus, the desired equation is:

(x - 1)^2 + (y - 1)^2 = 5^2 or (x - 1)2 + (y - 1)² = 5²

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4 years ago

The GPA of accounting students in a university is known to be normally distributed. A random sample of 20 accounting students re

Vladimir79 [104]

Answer:

The 95% of confidence intervals

(2.84 ,2.99)

Step-by-step explanation:

A random sample of 20 accounting students results in a mean of 2.92 and a standard deviation of 0.16

given small sample size n =20

sample mean x⁻ =2.92

sample standard deviation 'S' =0.16

level of significance ∝ = 0.95

The 95% of confidence intervals

$x^{-} ± t_{\alpha } \frac{S}{\sqrt{n} }$

the degrees of freedom γ=n-1 =20-1=19

t-table 2.093

$(x^{-} - t_{\alpha } \frac{S}{\sqrt{n} },x^{-} + t_{\alpha } \frac{S}{\sqrt{n} })$

$(2.92 - 2.093(\frac{0.16}{\sqrt{20} } ,2.92+2.093(\frac{0.16}{\sqrt{20} } )$

(2.92-0.0748,2.92+0.0748)

(2.84 ,2.99)

Therefore the 95% of confidence intervals

(2.84 ,2.99)

4 0

3 years ago

Solve this in an equality 8z+3-2z <51

Lelechka [254]

Answer: x < 8

8z+3-2z<51

Collect like terms.

6z+3<51

Move constant to the right side and change its sign.

6z<51-3

Subtract the numbers.

6z<48

Divide both sides of the inequality by 6.

z < 8

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3 years ago

How to write a decimal in words. 1.99

Andrej [43]

One and ninety nine hundredths

8 0

3 years ago

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Two angles of a triangle measure 59 degrees and 63 degrees. If the longest side measures 28 centimeters, find the length of the

sertanlavr [38]

Answer:

26.65 or 58

Step-by-step explanation:

5 0

3 years ago