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viktelen [127]
3 years ago
10

Simplify the expression 1.8-0.2x equallys -1.6. Step by step plzzz I will give you 100 points

Mathematics
1 answer:
posledela3 years ago
3 0

1.8 - 0.2x = -1.6         Subtract 1.8 on both sides

1.8 - 1.8 - 0.2x = -1.6 - 1.8

-0.2x = -3.4        Divide -0.2 on both sides

\frac{-0.2x}{-0.2}=\frac{-3.4}{-0.2}

x = 17

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A university is building a new student center that is two- thirds the distance from the arts center to the residential complex.
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Answer:

C = (\frac{21}{5},\frac{33}{5})

Step-by-step explanation:

Given

Points: (1, 9) and (9, 3)

Ratio = 2/3

Required

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Represent the ratio as ratio

Ratio = 2:3

The new coordinate can be calculated using

C = (\frac{mx_2 + nx_1}{n + m},\frac{my_2 + ny_1}{n + m})

Where

(x_1,y_1) = (1, 9)

(x_2, y_2) = (9, 3)

m:n = 2:3

Substitute these values in the equation above

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Hence;

<em>The coordinates of the new center is </em>C = (\frac{21}{5},\frac{33}{5})<em></em>

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3 years ago
In a survey of 12 people, it was found that an average of $36 was spent on their child's last birthday gift with a standard devi
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Answer:

(27.3692 ; 44.6308)

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Confidence interval :

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Upper boundary : 36 + 8.6308 = 44.6308

(27.3692 ; 44.6308)

3 0
3 years ago
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