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3 years ago

8- 13 is the conjugate of 8 + 13. True False

Mathematics

1 answer:

il63 [147K]3 years ago

3 0

Answer:

True

Step-by-step explanation:

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Expand (x-2)^7 using binomial theorem

Nastasia [14]

Answer:

x^7-14x^6+84x^5-280x^4+560x^3-672x^2+448x^2-128

Step-by-step explanation:

ends are x^7 and 120^7, and use the therom in the middle

5 0

2 years ago

A machine produces 40 spools of nylon each day. On the first day of production, 10 spools have to be thrown away.What percentage

Assoli18 [71]

40 spools = 100%
30 spools = ?

30/40*100
= 75%.

Hope this helps

8 0

2 years ago

Solve:

Basile [38]

$\cfrac{25x^5+10x^2}{5x} = \cfrac{5x(5x^4+2x)}{5x} =5x^4+2x$

3 0

3 years ago

A fair coin is tossed and a single number cube is rolled. the probability of rolling a number less than 5 is ________________. t

Alik [6]

You have a 4/ 6 chance
then you have a 2/6 chance if the number is an odd number then reducing you would get
1. 2/3
2. 1/3

7 0

3 years ago

PLEASE HELP.

krek1111 [17]

Answer:

Part a) The radii are segments AC and AD and the tangents are the segments CE and DE

Part b) $DE=4\sqrt{10}\ cm$

Step-by-step explanation:

Part a)

we know that

A <u>radius</u> is a line from any point on the circumference to the center of the circle

A <u>tangent</u> to a circle is a straight line which touches the circle at only one point. The tangent to a circle is perpendicular to the radius at the point of tangency.

In this problem

The radii are the segments AC and AD

The tangents are the segments CE and DE

Part b)

we know that

radius AC is perpendicular to the tangent CE

radius AD is perpendicular to the tangent DE

CE=DE

Triangle ACE is congruent with triangle ADE

Applying the Pythagoras Theorem

$AE^{2}=AC^{2}+CE^{2}$

substitute the values and solve for CE

$14^{2}=6^{2}+CE^{2}$

$CE^{2}=14^{2}-6^{2}$

$CE^{2}=160$

$CE=\sqrt{160}\ cm$

$CE=4\sqrt{10}\ cm$

remember that

CE=DE

$DE=4\sqrt{10}\ cm$

7 0

3 years ago