All categories

2 years ago

Please I need help and an explanation :0

Mathematics

2 answers:

ladessa [460]2 years ago

7 0

$\qquad\qquad\huge\underline{{\sf Answer}}$

According to properties of arc on a circle, angles subtended by an arc on circle at its boundaries are equal to one another.

Hence ~

$\qquad \dashrightarrow \tt \: \angle C = \angle W$

$\qquad \tt \dashrightarrow \:12x + 15 = 3x + 78$

$\qquad \tt \dashrightarrow \:12x - 3x = 78 - 15$

$\qquad \tt \dashrightarrow \:9x = 63$

$\qquad \tt \dashrightarrow \:x = 63 \div 9$

$\qquad \tt \dashrightarrow \:x = 7$

Therefore, value of x is 7

Snowcat [4.5K]2 years ago

4 0

Angles drawn inside chords and radius hence they are equal

12x+15=3x+78
9x=63
x=63/9
x=7

You might be interested in

Kendra was asked to find the number of students who planned to attend the evening symphony performance. She was told that 40 per

asambeis [7]

Answer:

Kendra should of divided by 2

Step-by-step explanation:

3 0

4 years ago

What is the probability of drawing the compliment of a king or a

inna [77]

Answer:

The probability of drawing the compliment of a king or a queen from a standard deck of playing cards = 0.846

Step-by-step explanation:

Step(i):-

Let 'S' be the sample space associated with the drawing of a card

n (S) = 52C₁ = 52

Let E₁ be the event of the card drawn being a king

$n( E_{1} ) = 4 _{C_{1} } = 4$

Let E₂ be the event of the card drawn being a queen

$n( E_{2} ) = 4 _{C_{1} } = 4$

But E₁ and E₂ are mutually exclusive events

since E₁ U E₂ is the event of drawing a king or a queen

step(ii):-

The probability of drawing of a king or a queen from a standard deck of playing cards

P( E₁ U E₂ ) = P(E₁) +P(E₂)

$= \frac{4}{52} + \frac{4}{52}$

P( E₁ U E₂ ) = $\frac{8}{52}$

step(iii):-

The probability of drawing the compliment of a king or a queen from a standard deck of playing cards

$P(E_{1}UE_{2}) ^{-} = 1- P(E_{1} U E_{2} )$

$P(E_{1}UE_{2}) ^{-} = 1- \frac{8}{52}$

$P(E_{1}UE_{2}) ^{-} = \frac{52-8}{52} = \frac{44}{52} = 0.846$

Conclusion:-

The probability of drawing the compliment of a king or a queen from a standard deck of playing cards = 0.846

5 0

3 years ago

Can someone please help me with this

pogonyaev

The geometric mean you would use is C

6 0

3 years ago

HELP (SEE IMAGE) what triangle must be a right triangle and why???

pashok25 [27]

The answer would be D

8 0

3 years ago

Read 2 more answers

How are renewable and nonrenewable resources different?

Zinaida [17]

Renewable resources can be replaced in a reasonable amount of time, but nonrenewable resources cannot.

Step-by-step explanation:

Nonrenewable resources can be depleted within a human lifespan while renewable resources cannot. An examp0le of a non-renewable resource is crude oil. With continuous mining of crude oil, the natural reserves will continue to decrease until it gets even harder and more expensive to find.

Renewable resources, however, are cannot be depleted since they are ever self-renewing. An example is a wind and the sun whose energy can be harnessed to provide energy to power homes and businesses.

4 0

3 years ago

Read 2 more answers