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2 years ago

!!!!!! hElP mE PleAsE !!!!!!

Mathematics

2 answers:

babunello [35]2 years ago

6 0

For the first one 86.637- 28.56 the answer is 58.077 because you line the numbers up and then subtract

omeli [17]2 years ago

4 0

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You have a 1 in 4 chance of winning a game. How would you calculate the probability that you will win 3 times in a row?

Ierofanga [76]

Answer:

<u>The probability of winning three games in a row is 1/64 or 1.6%</u>

Step-by-step explanation:

Probability of winning a game = 1/4

Probability of winning two games in a row = 1/4 * 1/4 = 1/16

Probability of winning three games in a row = 1/4 * 1/4 * 1/4 = 1/64

Probability of winning three games in a row = (1/4)³ = 1/64

1/64 = 0.015625

1/64 = 1.6% (rounding to the next tenth)

5 0

3 years ago

Find the exact value of the following. -3(1.2) ^2 =

weeeeeb [17]

Answer:

-4.32 would be the answer

i hope this helps you

5 0

2 years ago

GCSE 995381

nikdorinn [45]

Answer:

$2.9 cm^2$

Step-by-step explanation:

Given,

Angle of sector = 30°

Radius of circle, r = 8 cm

Area of the shaded region, A =?

The diagram is attached below.

Now,

Area of shaded region = Area of sector - Area of triangle

Area of triangle = $\frac{1}{2}\times base \times height$

We know that,

$\sin \theta = \dfrac{P}{H}$

$\sin 30^\circ= \dfrac{P}{8}$

$P = \dfrac{8}{2}$

$P = 4\ cm$

And

$\cos \theta =\dfrac{B}{H}$

$\cos 30^\circ = \dfrac{B}{8}$

$B = \dfrac{8\times \sqrt{3}}{2}$

$B = 4\sqrt 3$

Area of sector = $\dfrac{\theta}{360^\circ}\times \pi r^2$

Area of sector = $\dfrac{30^\circ}{360^\circ}\times \pi \times 8^2$

= 16.75 cm^2

Area of triangle = $\dfrac{1}{2} \times 4\sqrt 3 \times 4$

= 13.85 cm^2

Area of shaded region = 16.75 - 13.85

= $2.9 cm^2$

7 0

2 years ago

Which of the lines graphed has a slope of 3 and a y-intercept of 2?

photoshop1234 [79]

Answer:

Step-by-step explanation:

7 0

2 years ago

A trade magazine routinely checks the drive-through service times of fast-food restaurants. Upper A 95% confidence interval t

katen-ka-za [31]

Answer:

-A person can be 95% confident that the mean drive through service time lies between 177.6 seconds and 181.0 seconds.

Step-by-step explanation:

- Confidence level is the degree of certainty we have on a particular statistic.

-The 95% confidence interval means that we are 95% confident that the mean drive through service time is lies between 177.6 seconds and 181.0 minutes.

8 0

3 years ago