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Damm [24]
3 years ago
13

Solve the question 2 (3x plus 5) Square - 16 = 0 buy completing the square​

Mathematics
1 answer:
alisha [4.7K]3 years ago
5 0

Answer:

1/3(4√2/2- 5)

-1/3(4√2/2 + 5)

Step-by-step explanation:

2(3x+5)² -16=0

2(3x+5)²=16

(3x+5)² = 4²/2

3x+5= 4/√2 ⇒ 3x= 4/√2- 5 ⇒ x= 1/3(4√2/2- 5)

3x+5= -4√2 ⇒ x= -1/3(4√2/2 + 5)

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if you divide both sides of an equation by the same number the new equation will have the same solution
Roman55 [17]
This is true because the same thing will happen to both sides
8 0
3 years ago
A quadrilateral with no sides parallel and diagonals that are perpendicular
Drupady [299]
<h3>Answer:  Quadrilateral</h3>

======================================================

Explanation:

Of your original given list, let's write down the parallelograms. They are:

  • Parallelogram
  • Rectangle
  • Rhombus
  • Square

So we cross those off the list since we want a quadrilateral with no sides parallel. A parallelogram, by definition, is a quadrilateral with both pairs of opposite sides that are parallel.

We can also rule out the trapezoids because a trapezoid is a four sided figure (quadrilateral) where we have exactly 1 pair of parallel sides, while the other sides are not parallel.

Lastly, we can rule out the kite because any kite has perpendicular diagonals.

The only thing left is quadrilateral. In my opinion this answer should be more specific and say "quadrilateral that isn't a parallelogram, a trapezoid, or a kite", but I think I see what your teacher was going for here.

5 0
3 years ago
1.£500 is deposited in a bank paying 2% compound interest per annum. What is the balance after 2 years?
Rashid [163]

Formula for compound interest: A = P( 1 + r/n)^nt

A = final amount

P = initial principal balance

r = interest rate

n = number of times interest applied per time period

t = number of time periods elapsed

^ = I used this symbol to present that a the number needs to go higher (see picture)

1. 500(1 + 2/100)^2 = 520.2

£520.20

2. 400(1 + 1.75/100)^2 = 414.12

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5 0
3 years ago
Name the property illustrated. 6 + 4 + 1 = 4 + 6 + 1
ikadub [295]

Answer:

distribuative property of addition

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
jeffrey's paycheck varies directly with the hours he works . when jeffrey works 5 hours , he gets paid $75.00. how much does jef
MrRissso [65]
Direct variations can be set up as proportions
5/75 = 8/x....5 hrs to 75 dollars = 8 hrs to x dollars
now we cross multiply
(5)(x) = (75)(8)
5x = 600
x = 600/5
x = 120 <== so he makes $120 for working 8 hrs

another way...
75/5 = 15..so he makes 15 per hr
15 * 8 = 120
6 0
3 years ago
Read 2 more answers
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