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dexar [7]
2 years ago
10

Help please!!!!!!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
Rudik [331]2 years ago
6 0

Answer:

27.7% if I am correct, but I am confident I am

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Solve each system by substitution. please help me<br> 2x{+y=6<br> x{+y=3
saw5 [17]
1. x= 3/Y as a fraction btw

2. Same thing
6 0
3 years ago
I need help with this one.
Mandarinka [93]

Answer:

T_{n} = \frac{1}{5} T_{n-1} with T₁ = 5000

Step-by-step explanation:

There is a common ratio r between consecutive terms in the sequence, that is

r = \frac{1000}{5000} = \frac{200}{1000} = \frac{40}{200} = \frac{1}{5}

This indicates the sequence is geometric with recursive rule

T_{n} = r T_{n-1}

Here tr = \frac{1}{5} , thus

T_{n} = \frac{1}{5} T_{n-1} , T₁ = 5000

3 0
3 years ago
What number would you add to the equation below to complete the square?x2 + 4x = 0?
julia-pushkina [17]
------------------------------------------------------------------
Equation
------------------------------------------------------------------
x² + 4x = 0

------------------------------------------------------------------
Add a constant
------------------------------------------------------------------
x² + 4x + (4/2)² - (4/2)²  = 0   ← Add 2² to form perfect square

------------------------------------------------------------------
Evaluate bracket
------------------------------------------------------------------
x² + 4x + 2² - 2² = 0

------------------------------------------------------------------
Form the perfect square
------------------------------------------------------------------
(x + 2)² = 4 

------------------------------------------------------------------
Square root both sides
------------------------------------------------------------------
(x+2) = \pm √4

------------------------------------------------------------------
Evaluate the square root
------------------------------------------------------------------
(x+2) = \pm 2

------------------------------------------------------------------
Solve x 
------------------------------------------------------------------
x = 2 - 2 or x = -2 - 2

x = 0 or -4

------------------------------------------------------------------
Answer: The constant to add is 4 and the value of x = 0 or -4
------------------------------------------------------------------



7 0
3 years ago
A sheep is bought for £40 and sold for £33. What is the percentage loss?
valkas [14]

Answer:

£13  %11

Step-by-step explanation:

4 0
2 years ago
In triangle ABC, A is a right angle and M B=45°. Find BC. If you answer is not an integer, leave it in simplest radical form.
Nataly_w [17]

Step-by-step explanation:

- In a right triangle, if ∠B is 45°, then ∠C is too.

-- Since ∠B  and  ∠C  are equal, the sides opposite them

are equal too.  This is an isosceles right triangle.  Its legs

are equal.

-- (The hypotenuse)²  =  (one leg)²  +  (the other leg)²

                                  =       (12-ft)²  +  (12-ft)²

                                  =              (144 x 2)

     The hypotenuse  =  √(144 x 2)  =  12√2 .

LOL

7 0
3 years ago
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