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jeyben [28]
3 years ago
15

What is the this expression in standard form?: 6(5r-4)-2(r-7s-3)

Mathematics
1 answer:
Thepotemich [5.8K]3 years ago
3 0

Use distrubutive property <em>a(b + c) = ab + ac</em>

6(5r - 4) - 2(r - 7s - 3)

= (6)(5r) + (6)(-4) + (-2)(r) + (-2)(-7s) + (-2)(-3)

= 30r - 24 - 2r + 14s + 6

= (30r - 2r) + 14s + (-24 + 6)

<h3>= 28r + 14s - 18</h3>
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There are many cylinders with a height of 9 inches. Let R represent the radius in inches and V represent the volume in cubic inc
PtichkaEL [24]

Answer:

R V

1  9π in³ 

2  36π in³

3  81π in³

Step-by-step explanation:

For, r = 1

V = π(1)²9 = 9π in³

For, r = 2

V = π(2)²9 = 4*9π in³ = 36π in³

For r = 3

V = π(3)²9 = 9*9π in³ = 81π in

R V

1  9π in³ 

2  36π in³

3  81π in³

6 0
3 years ago
Tyler brother works in a shoe store and the store brought a pair of shoes for $50 and sold it for $80 what percentage was the ma
Free_Kalibri [48]

Answer:

$60.

Step-by-step explanation:

Cost price=  $50

Selling price = $80

Percentage markup = Gain/Cost price x   100%

=30/50x100

=$60.

7 0
2 years ago
Can anyone explain me?​
Alika [10]

Answer:

Step-by-step explanation:

a) (a + b)² = (a + b) * (a +b)

  (a + b)³  = (a + b) * (a +b) * (a +b)

 a²- b² = (a +b) (a - b)

Here (a + b) is common in all the three expressions

HCF = (a + b)

b) (x - 1) = (x - 1)

  x² - 1  = (x - 1) * (x + 1)

  (x³ - 1) = (x - 1) (x² + x + 1)

HCF = (x -1)

7 0
3 years ago
Which of these true conditional statements has a false converse?
cestrela7 [59]
Correct answer is A. For example 50/2= 25 which is odd
4 0
3 years ago
Is 1 1/4 a rational number?
lisabon 2012 [21]

Answer:

Hey there!

1 1/4 is a rational number because it can be expressed as a fraction.

Let me know if this helps :)

3 0
3 years ago
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