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4 years ago

if a line is tangent to a circle,then it is perpendicular to the radius drawn to that point of tangent.

Mathematics

1 answer:

Nikolay [14]4 years ago

3 0

Attached image is the detail answer to your question.

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What might be the units that you write in the blanks that make this true?

Ilya [14]

Answer:

6.2 kilometres = 6200 meters

Step-by-step explanation:

6.2 kilometres is 1000 times less than 6200 meters

4 0

3 years ago

1) A school has 1600 students and they are going to vote as to whether they will completely convert the school completely off fo

fredd [130]

Answer:

Standard deviation of the students = 0.408

The students would you have to poll to be 95% confident of the outcome within /- 2% of the vote

= 0.408 X 1600

= 652.8

Step-by-step explanation:

Step(i):-

Given sample size 'n' = 1600

95% confidence interval of the margin error is determined by

$M.E = \frac{Z_{0.05} S.D}{\sqrt{n} }$

Level of significance = 0.05

Z₀.₀₅ = 1.96

Given Margin of error = 2% = 0.02

$M.E = \frac{Z_{0.05} S.D}{\sqrt{n} }$

$0.02 = \frac{1.96 X S.D}{\sqrt{1600} }$

0.02 X √1600 = 1.96 X S.D

$S.D = \frac{0.02X\sqrt{1600} }{1.96} = 0.408$

Standard deviation of the students = 0.408

The students would you have to poll to be 95% confident of the outcome within /- 2% of the vote

= 0.408 X 1600

= 652.8

5 0

3 years ago

Graph the image of the given triangle under a dilation with a scale factor of 14 and center of dilation (0, 0) . To graph th

DochEvi [55]

Answer:

the begging explanation

Step-by-step explanation:

hope this helped

5 0

3 years ago

The diameter of a circle is 14 yards. What is the circle's circumference?

yarga [219]

Answer:

The circle's circumference is equal to 14π yards.

General Formulas and Concepts:

Geometry

Circumference of a Circle Formula: C = πd

d is the diameter of the circle

Step-by-step explanation:

Step 1: Define

Identify.

d = 14 yds

Step 2: Find Circumference

Substitute in variables [Circumference Formula]: C = 14π yds

Topic: Geometry

3 0

2 years ago

The length of overline CD is 12 units. C^ prime D^ prime is the image of overline CD under a dilation with a scale factor of n.

Rufina [12.5K]

Answer:

A, D , and E

Step-by-step explanation:

We have that:

$\overline{CD} = 12 \: units$

$\overline{C'D'}$

is the image of CD after a dilation of scale factor n.

We use the relation between the image length and object length:

$\overline{C'D'} = n \times \overline{CD}$

Option A

If n=3/2, then

$\overline{C'D'} = \frac{3}{2} \times 12 = 3 \times 6 = 18 \: units$

This is true.

Option B

If n=4, then

$\overline{C'D'} = 4 \times 12 = 36 \: units$

This is false.

Option C

If n=8, then

$\overline{C'D'} = 8 \times 12 = 96 \: units$

This too is false.

Option D

If n=2, then

$\overline{C'D'} = 2 \times 12 = 24 \: units$

This is true

Option E

If n=3/4, then

$\overline{C'D'} = \frac{3}{4} \times 12$

$\overline{C'D'} = 3 \times 3 = 9 \: units$

This is also true.

4 0

3 years ago