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2 years ago

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Mathematics

1 answer:

PtichkaEL [24]2 years ago

4 0

Answer:

question wrong

Step-by-step explanation:

2 same angles

$\frac{13+5}{z} = \frac{z}{5} \\\\z^{2} = 5 * 18\\z^{2} = 90\\z = \sqrt{90} = 9,4$

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Line CD passes through (0.1) and is parallel to x +y = 3. Write the standard form of the equation of line CD.

Drupady [299]

Answer:

y = -x + 1

Step-by-step explanation:

We are asked to find the equation of a line parallel to

x + y = 3

Step 1: find the slope

x + y = 3

Following the equation of a line

y = mx + c

3 - x = y

-x + 3 = y

y = -x + 3

Slope m = -1

Step 2: substitute m = -1 into the equation

y - y_1 = m( x - x_1)

Using the point ( 0 , 1)

x_1 = 0

y_1 = 1

y - 1 = m( x - 0)

m = -1

y - 1 = -1 ( x - 0)

Open the bracket

y - 1 = -1x + 0

y - 1 = -x

y = -x + 1

The equation of the line is

y = -x + 1

3 0

2 years ago

The angles of a triangle are 120 degrees. (x + 16) degrees, and X degrees.

Maksim231197 [3]

Answer:

x = 22

Step-by-step explanation:

Adding all the degrees to a triangle must equal 180

120 + (x+16) + x = 180

2x + 136 = 180

-136. -136

2x = 44

$\frac{2x}{2} = \frac{44}{2}$

x = 22

4 0

2 years ago

A cylinder has a volume of 45 pi and radius of 3 what is the height? Plzz help it’s due tomorrow

VARVARA [1.3K]

Answer:

Height = 5

Step-by-step explanation:

$Solution,\\Volume(V)=45\pi \\Radius(r)=3\\Height(h)=?\\As,\\V=\pi r^{2} h\\45\pi =\pi (3)^{2} h\\\frac{45\pi }{9\pi } =h\\h=5$

4 0

2 years ago

Which number is the largest? 7.2 ⋅ 10−6, 3.09 ⋅ 103, 2.04 ⋅ 104, 5 ⋅ 103

Tems11 [23]

The equation whit the largest outcome is 5*103=515

7 0

2 years ago

Read 2 more answers

An important factor in selling a residential property is the number of times real estate, agents show a home. A sample of 21 hom

Natalka [10]

Using the t-distribution to build the 99% confidence interval, it is found that:

The margin of error is of 3.64.

The 99% confidence interval for the population mean is (19.36, 26.64).

<h3>What is a t-distribution confidence interval?</h3>

The confidence interval is:

$\overline{x} \pm t\frac{s}{\sqrt{n}}$

In which:

$\overline{x}$ is the sample mean.

t is the critical value.

n is the sample size.

s is the standard deviation for the sample.

The critical value, using a t-distribution calculator, for a two-tailed 95% confidence interval, with 21 - 1 = 20 df, is t = 2.086.

The other parameters are given as follows:

$\overline{x} = 23, s = 8, n = 21$

The margin of error is given by:

$M = t\frac{s}{\sqrt{n}} = 2.086\frac{8}{\sqrt{21}} = 3.64$

Hence the bounds of the interval are:

$\overline{x} - M = 23 - 3.64 = 19.36$

$\overline{x} + M = 23 + 3.64 = 26.64$

The 99% confidence interval for the population mean is (19.36, 26.64).

More can be learned about the t-distribution at brainly.com/question/16162795

#SPJ1

7 0

1 year ago