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dalvyx [7]
3 years ago
9

Jarred wants to by a go-cart for $1,200

Mathematics
1 answer:
dybincka [34]3 years ago
6 0

the go cart costs 1200

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Simplify. 17 _ 6 _ 10 Ÿ 2 + 12<br> A. 27.8 <br> B. 59 <br> C. 67 <br> D. _1
Evgesh-ka [11]
17 - 6 x 10 ÷ 2 + 12 = 17 - 60 ÷ 2 + 12 = 17 - 30 + 12 = -13 + 12 = -1
7 0
3 years ago
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SCCoast, an Internet provider in the Southeast, developed the following frequency distribution on the age of Internet users. Fin
Tomtit [17]

Answer:

Mean: 40.17 years.

Standard deviation: 10.97 years.

Step-by-step explanation:

The frequency distribution is in the attached image.

We can calculate the mean adding the multiplication of midpoints of each class and frequency, and dividing by the sample size.

The midpoints of a class is calculated as the average of the bounds of the class.

Then, the mean can be written as:

E(X)=\dfrac{1}{N}\sum f_iX_i\\\\\\E(X)=\dfrac{1}{60}(3\cdot15+7\cdot25+18\cdot35+20\cdot45+12\cdot 55)=\dfrac{45+175+630+900+660}{60}\\\\\\E(X)=\dfrac{2,410}{60}=40.17

The standard deviation can be calculated as:

s=\sqrt{\dfrac{1}{N-1}\sum f_i(X_i-E(X))^2}\\\\\\s=\sqrt{\dfrac{1}{59}[3(15-40.17)^2+7(25-40.17)^2+18(35-40.17)^2+20(45-40.17)^2+12(55-40.17)^2]}

\\\\\\s=\sqrt{\dfrac{1}{59}( 1,900.59  + 1,610.90  + 481.12  + 466.58  + 2,639.15  )}\\\\\\s=\sqrt{\dfrac{ 7,098.33 }{59}}=\sqrt{120}=10.97

4 0
3 years ago
Which graph represents the inequality y≥1−3x?
Slav-nsk [51]

Answer:

first one

Step-by-step explanation:

4 0
3 years ago
Penny caught a fish that weighed 2.9 lbs. The fish Harold caught weighs 60%
IrinaVladis [17]

Answer:

4.64

Step-by-step explanation:

2.9 x 1.60=4.64

3 0
2 years ago
27=3 raised to power (2x_1)​
Ivahew [28]

Answer:

x = 2

Step-by-step explanation:

27=3^{2x-1}\\\\3^{3}=3^{2x-1}\\

Bases are equal. So, compare powers

2x - 1 = 3

Add 1 to both sides,

2x = 3+1

2x = 4

Divide both sides by 2

x = 4/2

x = 2

7 0
2 years ago
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