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Alexus [3.1K]
3 years ago
5

Tell whether the ordered pair (1, -4) is a solution of the given system y = -4x y = 2x - 2

Mathematics
1 answer:
ololo11 [35]3 years ago
6 0

You plug in x = 1 and y = -4 into the system of equations and see if they fit:-

y = -4x

- 4 = -4 * 1 = -4         This fits

y = 2x - 2

-4 = 2*1 - 2 = 0   Does NOT fit.

So (1, -4) is not a solution.

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Help! Exponential Equation WITHOUT CALCULATOR
ale4655 [162]

1.
(2^{x} -2^{-x})^{2} = 4^{2} \\ \\2^{2x}-2*2^{x}*2^{-x} + 2^{-2x} =4^{2} \\ \\2^{2x}-2*2^{x-x} + 2^{-2x} =4^{2} \\ \\ 2^{2x}+ 2^{-2x} - 2=16 \\ \\ 2^{2x}+ 2^{-2x} = 18

\\ \\ 2.( 2^{x})^{3} - (2^{-x}^) ^{3}= (2^{x} -2^{-x})(2^{2x}+2^{x}*2^{-x}+2^{-2x})
\\ \\ ( 2^{x})^{3} - (2^{-x}^)^{3}=(2^{x} -2^{-x})(2^{2x}+2^{-2x}+2^{x}*2^{-x})
\\ \\ ( 2^{x})^{3} - (2^{-x}^)^{3}=(2^{x} -2^{-x})(2^{2x}+2^{-2x}+1)
\\ \\ ( 2^{x})^{3} - (2^{-x}^)^{3}=(2^{x} -2^{-x})((2^{2x}+2^{-2x})+1)


\\ \\ ( 2^{x})^{3} - (2^{-x})^{3} =(4)((18)+1)= 76
\\ \\ 2^{3x}-2^{-3x} =76

4 0
3 years ago
Ted runs a coffee-distributing company with monthly fixed costs of $3600. He also spends $1.50 for each 16 ounce bag of coffee t
WARRIOR [948]

Answer:

10

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Click on the solution set below until the correct one is displayed​
Effectus [21]
What solution set below
7 0
2 years ago
1, 1, 5, 5, 7, 8, 8, 10, 12
stepan [7]

Answer:

ррооо

Step-by-step explanation:

Нажмите на фрагмент, чтобы вставить его в текстовое поле.

4 0
1 year ago
On field day, Breanna long jumped 62 inches, Myquisha jumped 5 feet 4 inches, and Ariana jumped 1 yard, 2 feet, 7 inches. Which
ella [17]
Let’s convert all their jumps into inches.

Breanna’s is already in inches (62)

Myquisha jumped 5 feet 4 inches
There are 12 inches in a foot, so

5 feet * 12 inches= 60 inches

Then add the 4 inches
60+4= 64
So Myquisha jumped 64 inches.


Ariana jumped 1 yard, 2 feet, 7 inches

1 yard is equal to 3 feet.

So, she jumped 5 feet 7 inches

12 inches in a foot, so
5*12=60 inches

Add the 7
60+7= 67 inches

So Breanna jumped 62, Myquisha 64 and Ariana 67

In order of shortest to longest:

Breanna, Myquisha, Ariana
3 0
3 years ago
Read 2 more answers
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