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Arte-miy333 [17]
3 years ago
5

Factorise the expressions and divide them as directed.​

Mathematics
1 answer:
Annette [7]3 years ago
6 0

a) 3(x-9)= 3x -9

3x-27=3x -9

3x-3x=-9+27

x=18

b) 2x+3x=5x^2

2x+3x=( 5x)^2

2x+3x=25x

5x=25x

x=25x/5

x=5x

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You multiply 5 * 2 1/3=

2 1/3= 7/3*5= 35/3 which is 11 2/3

so 11 2/3 is your answer
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I am trying to remember how to do Write a two-column proof,
Klio2033 [76]

9514 1404 393

Explanation:

Make use of the properties of equality.

  a = 2b +6 . . . . . given

  a = 9b -8 . . . . . given

  2b +6 = 9b -8 . . . . . . . substitution property of equality

  6 = 7b -8 . . . . . . . . . . . subtraction property of equality

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4 0
3 years ago
What is the area in square centimeters of the trapezoid below​
Dovator [93]

Answer:

39.6 cm²

Step-by-step explanation:

The formula for the area of a trapezoid is given as:

Area of a Trapezoid = 1/2(a + b) h

Where, from the question:

a = 8.9 cm

b = 5.5 cm

h = 5.5cm

Hence,

1/2 (8.9cm + 5.5cm) × 5.5cm

= 1/2 × 14.4 cm × 5.5 cm

= 39.6 cm²

Area of the Trapezoid = 39.6 cm²

5 0
3 years ago
You may use a calculator for this item,
Sever21 [200]

Based on the investment ratio and the amount invested, the amount that Zach invested is<u> $102,857.14. </u>

First thing to do is to add up the numbers in the ratio:

= 1 + 2 + 0.5

= 3.5

The amount that Zach invested is:

<em>= Zach's ration/ Sum of ratio x Amount invested</em>

= 1 / 3.5 x 360,000

= $102,857.14

In conclusion, Zach invested $102,857.14.

<em>Find out more at brainly.com/question/17061956. </em>

6 0
2 years ago
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