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dmitriy555 [2]
3 years ago
7

QUICK PLEASE HELP THIS HOMEWORK IS DUE IN LESS THAN 10 MINUTES PLEASE AND THANK YOU

Mathematics
1 answer:
Olenka [21]3 years ago
3 0

Answer:

3/7

Step-by-step explanation:

2+1=3 and there is 7 marble in all so it 3/7

tell me if im wrong

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Solve this equation please​
nalin [4]

Step-by-step explanation:

Number 1

log_{10}( {x}^{2}   - 3x + 12 )  = 1 \\  log_{10}( {x}^{2} - 3x + 12 )  =  log_{10}(10)  \\ cancelling \: both \: logs \: we \: have \\  {x}^{2}  - 3x + 12 = 10 \\  {x}^{2}  - 3x + 12 - 10 = 0 \\   {x}^{2}  - 3x + 2 = 0 \\

solve \: \: by \: factorisation \: method \\  {x}^{2}  - 2x - x + 2 \\  {x}(x - 2) \:  - 1(x - 2) \\ (x - 2)(x - 1) \\ therefore \: x = 2 \: or \: x = 1

Number 2

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3 years ago
A random sample of 450 vacationers in a huge luxury resort showed that 150 were business executives. We want to create a 95% con
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Answer:

p(s) = 0,33

Step-by-step explanation:

n = 450

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n*p₀  and n*q₀   more than 10, we can approximate  the binomial to a Normal Distribution Distribution

a) p - p₀  = z(c) * √ (p₀q₀)/n

z(c) =  ??

CI   95 %    then α = 5 %    α = 0,05      α/2 = 0,025

z(c) = 1,96

p  =  p₀  ±  z(c) * √ (p₀q₀)/n

p  = 0,33 ± 1,96 * 0,022

p =  (  0,33 - 0,04 ;  0,33 +  0,04

p = ( 0,29  ; 0,37 )

The value of the center of the confidence Interval is 0,33

p(s) = 0,33

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3 years ago
In a city, the bus route numbers consist of a positive number less than 100, followed by one of the letters a,b,c,d,e and f. how
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mr_godi [17]

Answer:

We just multiply 75 with 3 to make it a perfect square. This is because, 75 = 5 × 5 × 3. 3 doesn't have a pair. Thus 75 × 3 = 225 and √225 is 15.

Step-by-step explanation:

8 0
3 years ago
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eimsori [14]

Answer:

Whether you're teaching the meaning of fractions or fraction operations, visual models can help students connect fractions to what they already know. Division is an essential foundation for fractions. Once students can divide objects into equal groups, they can begin to grasp dividing a whole into equal parts.

Step-by-step explanation:

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