<h2><em>HOPE IT HELPS!!!! </em></h2><h2><em /></h2><h2><em /></h2><h2><em>=D</em></h2><h2><em /></h2><h2><em /></h2><h2><em /></h2>

5 0

3 years ago

If 3x - 2y=5 then, prove that<br>27x^3 - 8y^3 - 54x^2y + 36xy^2 = 125<br>

s2008m [1.1K]

Step-by-step explanation:

(3x-2y)³=5³

(3x)³-3(3x)².2y+3.3x.(2y)²-(2y)³=125

27x³-54x²y+36y²x-8y³=125

8 0

4 years ago

Read 2 more answers

The segment joining the two legs of a trapezoid is called

mel-nik [20]

Answer:

Base

Step-by-step explanation:

The segment joining the two legs of a trapezoid is called base

7 0

3 years ago

Read 2 more answers

Jess has 60 ounces of an alloy that is 40% gold. How many ounces of pure gold must be added to this alloy to create a new alloy

tia_tia [17]

Answer:

84 ounces of pure gold

Step-by-step explanation:

Jess has 60 ounces of an alloy that is 40% gold. How many ounces of pure gold must be added to this alloy to create a new alloy that is 75% gold?

Pure gold = 100% gold

Let the number of ounces of pure gold = x

Hence, we have the equation

40% × 60 ounces + 100%× x ounces = 75%(60 + x)ounces

= 0.4 × 60 + 1x = 0.75(60 + x)

= 24 + x = 45 + 0.75x

Collect like terms

x - 0.75x = 45 - 24

0.25x = 21

x = 21/0.25

x = 84 ounces

Therefore, we need 84 ounces of pure gold

6 0

3 years ago