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otez555 [7]
3 years ago
12

What is 0.4(0.3x-1)=2+0.75x ?

Mathematics
2 answers:
Andrews [41]3 years ago
7 0
1st disribute .4 through the parentheses.

.4 (.3x-1)=2+.75x
.12x-.4=2+.75x

subtract .12x from each side

-.4 = 2 + .63x

subtract 2 from each side

-2.4 = .63x

Divide each side by .63

-3.81 = x
Kaylis [27]3 years ago
5 0
0.12x - 0.4 = 2 + 0.75x

0.12x - 0.75 x = 2 + 0.4

-0.63 x = 2.4

x = 2.4/-0.63

x = - 3.8
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netineya [11]

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What I would do is convert everything to have a denominator of 10 so it could be easier to add.

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5 0
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6 0
2 years ago
Read 2 more answers
The vertices of a triangle are A(0, 0), B(3, 8), and C(9, 0). What is the area of this triangle?
Harlamova29_29 [7]
Answer: 36 units squared.


Explanation:
Area of a traingle is given by,

| 0.5{x1(y2-y3) + x2(y3-y1) + x3(y1-y2)} |

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= | 0.5 × (-72)|
= 36 unit squared.
8 0
3 years ago
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