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makkiz [27]
3 years ago
15

If 35% of the 300 students in 6th grade have an older brother or sister, how many 6th graders have an older sibling? To solve th

is problem, we can write and then create v 6th graders have an older brother or sister.​
Mathematics
2 answers:
kirza4 [7]3 years ago
8 0

Answer:

105 students

Step-by-step explanation:

lana66690 [7]3 years ago
4 0

Answer:

105

Step-by-step explanation:

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Simplify 5(-2)(-11)<br><img src="https://tex.z-dn.net/?f=5%28%20-%202%29%28%20-%2011" id="TexFormula1" title="5( - 2)( - 11" alt
hram777 [196]
5(-2) = -10, so    5(-2)(-11) = (-10)(-11) = 110
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Please help me. this is trig and all I need is an explanation on how to start
nikklg [1K]

Step-by-step explanation:

Hypotenuse : Opposite the right angle.

Opposite : Opposite the angle.

Adjacent : the last side left.

Your formulas.

Soh Cah Toa (Sin Cos Tan)

You'll be using Cos (Cah) because hypotenuse and adjacent are the only sides with something in it.

You rearranged formula :

Side length × Cos (Angle) = your answer to x

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HELP!<br><br> Domain/Range of f(x)= 2 SQRT X
jeyben [28]

Answer:

Step-by-step explanation:

I’m in middle school

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3 years ago
Whats the solutions for f(x)=- x^2-6x-8
poizon [28]

Answer:

x = -4, -2

Step-by-step explanation:

-x² - 6x - 8 = 0

x² + 6x + 8 = 0

x² + 4x + 2x + 8 = 0

x(x + 4) + 2(x + 4) = 0

(x + 4)(x + 2) = 0

x = -4, -2

7 0
3 years ago
Read 2 more answers
A real estate agent has 14 properties that she shows. She feels that there is a 50% chance of selling any one property during a
Ratling [72]

Answer:

91.02% probability of selling more than 4 properties in one week.

Step-by-step explanation:

For each property, there are only two possible outcomes. Either it is sold, or it is not. The chance of selling any one property is independent of selling another property. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

In this problem we have that:

n = 14, p = 0.5

Compute the probability of selling more than 4 properties in one week.

Either you sell 4 or less properties in one week, or you sell more. The sum of the probabilities of these events is decimal 1. So

P(X \leq 4)  + P(X > 4) = 1

We want to find P(X > 4). So

P(X > 4) = 1 - P(X \leq 4)

In which

P(X \leq 4) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) + P(X = 4)

So

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 0) = C_{14,0}.(0.5)^{0}.(0.5)^{14} = 0.000061

P(X = 1) = C_{14,1}.(0.5)^{1}.(0.5)^{13} = 0.000854

P(X = 2) = C_{14,2}.(0.5)^{2}.(0.5)^{12} = 0.0056

P(X = 3) = C_{14,3}.(0.5)^{3}.(0.5)^{11} = 0.0222

P(X = 4) = C_{14,4}.(0.5)^{4}.(0.5)^{10} = 0.0611

So

P(X \leq 4) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) + P(X = 4) = 0.000061 + 0.000854 + 0.0056 + 0.0222 + 0.0611 = 0.0898

Finally

P(X > 4) = 1 - P(X \leq 4) = 1 - 0.0898 = 0.9102

91.02% probability of selling more than 4 properties in one week.

8 0
3 years ago
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