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3 years ago

!!!!URGENT URGENT GEOMETRY REFLECTIONS!!! PROVIDE EXPLANATION IF POSSIBLE THANKS. BOGUS ANSWERS WILL BE REPORTED

Mathematics

1 answer:

marta [7]3 years ago

5 0

If m is the midpoint between x=a and x=b, then you have

... (a+b)/2 = m

... a+b = 2m

... b = 2m - a

For the case where a=1 and m=6, we find the reflected coordinate to be

... 2·6 - 1 = 11

Now, we want to reflect about the line x=4, so a=11 and m=4. The second reflection results in an x-coordinate of

... 2·4 - 11 = -3

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A basketball player participates in a one-and-one free throw situation. The player has a 70% free throw percentage. What is the

julia-pushkina [17]

Answer:

The average number of points this player will get in 100 one-and-one free throw situations is 70.

Step-by-step explanation:

For each free throw, there are only two possible outcomes. Either the player makes it, or he does not. The probability of the player making a free throw is independent of other free throws. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

The expected value of the binomial distribution is:

$E(X) = np$

70% free throw percentage.

This means that $p = 0.7$

What is the average number of points this player will get in 100 one-and-one free throw situations?

This is E(X) when n = 100. So

$E(X) = np = 100*0.7 = 70$

The average number of points this player will get in 100 one-and-one free throw situations is 70.

3 0

3 years ago

Read 2 more answers

Please help answer alll

poizon [28]

A= there are "4"one fourths in one hour and he hikes 2 miles every hour

B= 1, 1 1/2, 2, 4

C= it going to be 1/3 mile for every 1/6hour and she hikes 2 miles every hour.

D= 2/3, 1, 2, 4

7 0

3 years ago

Cos x = sin 34°<br> What is the value of x?<br> Enter your answer in the box.

vredina [299]

$\bf \textit{Cofunction Identities} \\\\ sin\left(90^o-\theta\right)=cos(\theta) \qquad cos\left(90^o-\theta\right)=sin(\theta) \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ cos(x)=\stackrel{90-56}{sin(\stackrel{\downarrow }{34^o})}\implies cos(\stackrel{\downarrow }{x})=sin(90^o-\stackrel{\downarrow }{56^o})\implies cos(56^o)$

3 0

3 years ago

Read 2 more answers

1. John’s age is three times that of his sister. When you add John’s age to his sister's age, you get 36. How old are John and h

iren [92.7K]

Answer:

sister = 6 years

John=18 years

Step-by-step explanation:

A(S) + 12 = 3 * A(S), subtracting A(S) from both sides one gets 12 = 2 * A(S). Now dividing both sides by 2 we get A(S) = 12/2 = 6 . Therefore, the age of the sister is 6 years when her brother John is three times as old, that is 18 years.

6 0

3 years ago

Read 2 more answers

A Chemist needs to mix a 20% acid solution with a 50% acid solution to obtain 15 liters of a 34% acid solution. How many liters

Nuetrik [128]

8 litres (amount of 20% solution needed) and 7 litres for (amount of 50% solution needed)

<u>Step-by-step explanation:</u>

Let consider ‘x’ for 20% acid solution and (15 – x) for 50% acid solution. And so, the equation would be as below,

20% in x + 50% in (15 – x) = 15 litres of 34%

Convert percentage values, we get

0.20(x) + 0.50 (15 – x) = 15 (0.34)

0.20 x + 7.5 – 0.50 x = 5.1

-0.3 x + 7.5 = 5.1

0.3 x = 7.5 – 5.1

0.3 x = 2.4

$x = \frac{2.4}{0.3} = 8 litres (amount of 20 \% solution needed)$

Apply ‘x = 8’ value in (15 – x) we get,

15 – 8 = 7 litres

The value of 7 litres for (amount of 50% solution needed)

8 0

3 years ago