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3 years ago

Find the midpoint between the pair of points. (-1, -5) and (-5, 9)

Mathematics

1 answer:

tatyana61 [14]3 years ago

8 0

Answer:

Step-by-step explanation:

(-1-5)/2 = -6/2= -3

(-5+9)/2 = 4/2 = 2

(-3, 2)

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Find the probability of exactly three successes in six trials of a binomial experiment in which the the probability of is 50%.

posledela

Answer: 31.25%

Two ways to solve this problem:

#1: Use the formula: $P(X=x)={n}Cx_{} *p^{x}*(1-p)^{n-x}$

#2 Use a graphing calculator and use the function binompdf(n, p, x)

x = 3
n = 6
p = 0.5

#1: Formula:

$P(X=3)=_{6}C_{3}*0.5^{3} *(1-0.5)^{6-3}=\frac{6!}{3!(6-3)!} *0.5^{3} *0.5^{3}\\=\frac{6!}{3!*3!} *0.5^{3} *0.5^{3}=20*0.125*0.125=0.3125$

#2: Faster method

binompdf(6, 0.5, 3) = 0.3125

8 0

3 years ago

A girl studied for 5 2/3 hours daily. She devotes 2 4/2 hours of her time for science and mathematics. How much time does she de

enot [183]

Given :

Number of hours studied daily , $T=5\dfrac{2}{3}$ .

Time given for science and mathematics is , $t=2\dfrac{4}{2}$ .

To Find :

How much time does she devote for other subjects .

Solution :

Let , time devote for other student is x .

So , Time left for other subject = Total time - Time taken by science and mathematics .

$x=T-t\\\\x=5\dfrac{2}{3}-2\dfrac{4}{2}\\\\x=\dfrac{(5\times 3)+2}{3}- \dfrac{(2\times 2 )+4}{2}\\\\x=\dfrac{17}{3}-4\\\\x=\dfrac{17-(4\times 3)}{3}\\\\x=\dfrac{5}{3}=1\dfrac{2}{3}$

Therefore , time devote for other subject is $1\dfrac{2}{3}$ hours .

Hence , this is the required solution .

8 0

4 years ago

Exactly how do you figure out one step equations? We're learning about these in math now, and it's very difficult for me.

Eddi Din [679]

X/4=9
*4=9*4
x=36

Hope this helps!

4 0

3 years ago

What is the answer for x?

mars1129 [50]

Answer:

Step-by-step explanation:

Here do this 17.3 multiply 37 and then carry your decimal past the number you get and put the decimal in the place like the 17.3

6 0

3 years ago

A local electronics store raised its prices on headphones by 20%. The headphones that Stan wants to buy now cost $36. How much d

atroni [7]

You would do 36$ -20% =28.8

4 0

3 years ago